CN205847063U - A kind of soft switch circuit topology based on capacitor charge and discharge - Google Patents
A kind of soft switch circuit topology based on capacitor charge and discharge Download PDFInfo
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- CN205847063U CN205847063U CN201620615090.XU CN201620615090U CN205847063U CN 205847063 U CN205847063 U CN 205847063U CN 201620615090 U CN201620615090 U CN 201620615090U CN 205847063 U CN205847063 U CN 205847063U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
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Abstract
This utility model relates to a kind of soft switch circuit topology based on capacitor charge and discharge, including master switch, the one end on the former limit of one termination auxiliary transformer, its other end is connected with one end of auxiliary switch, the other end of auxiliary switch is connected with one end of auxiliary capacitor, the positive pole of accessory power supply respectively, and the other end of the auxiliary capacitor other end with the negative pole of accessory power supply, the former limit of auxiliary transformer respectively is connected.The invention also discloses a kind of control logical sequence method of soft switch circuit topology based on capacitor charge and discharge.It is big that this utility model efficiently solves switching device stress, Sofe Switch do not loaded and power source change and lost efficacy, control complicated and that the selection of resonating device parameter is more difficult problem.It is low that this utility model has device parameter requirements, and control is simple, stresses of parts is little, applying frequency wide ranges, can be applicable to all kinds of device with electronic switching device and supply convertor device, can be effectively improved power-efficient and reduce system cost.
Description
Technical field
This utility model relates to soft switch topology and the control logic technology field of electrical switch, is specifically related to a kind of electronics
Switching device no-voltage and zero current passing and no-voltage and the technology of zero-current switching.
Background technology
At present, the device such as all kinds of Switching Power Supplies, inverter and converter, electronic switching device majority is operated in hard switching shape
State, is turned on or off under the state that hard switching is the voltage on electronic switching device and electric current is not zero, and Sofe Switch is electronic cutting
Close the voltage on device and be turned on or off under state that electric current is zero.Due to electronic circuit and the parasitic capacitance of electronic devices and components
With stray inductance effect, there is switch transition stage in electronic switching device, during conducting, electric current gradually rises and progressively declines with voltage,
During disconnection, electric current progressively declines and gradually rises with voltage.Transition stage voltage and the overlapping process of electric current, produce serious energy
Loss, causes electronic switching device temperature to rise and energy efficiency declines.Sofe Switch achieves electronic switching device switch excessively
The energy minimization that stage current is overlapping with voltage, effectively reduces electronic switching device temperature rise and improves energy efficiency.
LC resonance or QRC quasi-resonance soft switch, switching frequency need to change with the change of load, and application has the biggest
Limitation.Increase the QRC quasi-resonance soft switch of auxiliary switch, although achieve and determine FREQUENCY CONTROL, but load change or power supply become
Changing all to cause Sofe Switch to lose efficacy, and auxiliary switch is operated in hard switching state.There is control difficulty in above-mentioned soft switch technique
Big and high to resonating device parameter request defect, causes application to be greatly limited.How to realize Sofe Switch not by electricity
Source and the impact of load change？How to realize controlling simple and resonating device parameter request is low？How to realize master switch and auxiliary
Switch is Sofe Switch？Need more applicable soft switch technique, promote the application popularization of soft switch technique, improve effect further
Rate, it is achieved preferably economic worth.
Utility model content
It is low that primary and foremost purpose of the present utility model is to provide one to have device parameter requirements, controls simple, stresses of parts
Little, applying frequency wide ranges, the soft switch circuit based on capacitor charge and discharge that Sofe Switch was not lost efficacy by power supply and load change
Topology.
For achieving the above object, this utility model have employed techniques below scheme: a kind of based on capacitor charge and discharge soft opens
Close circuit topology, including master switch, the one end on the former limit of one termination auxiliary transformer, its other end and one end of auxiliary switch
Being connected, the other end of auxiliary switch is connected with one end of auxiliary capacitor, the positive pole of accessory power supply respectively, the other end of auxiliary capacitor
The other end with the negative pole of accessory power supply, the former limit of auxiliary transformer is connected respectively.
Also including master switch fly-wheel diode, master switch fly-wheel diode is in parallel with master switch.
Also including auxiliary switch fly-wheel diode, auxiliary switch fly-wheel diode is in parallel with auxiliary switch.
The secondary of described auxiliary transformer is charged to auxiliary capacitor by commutator, and system power supply is given auxiliary by current-limiting inductance
Help electric capacity boost charge.
Described master switch fly-wheel diode is master switch endophyte diode, or parallel connection outside diode.
Described auxiliary switch fly-wheel diode is auxiliary switch endophyte diode, or parallel connection outside diode；Auxiliary
Switch can not also use fly-wheel diode.
Described current-limiting inductance is connected in accessory power supply loop, and described current-limiting inductance is induction reactance device, impedance device, capacitive reactance
Any one in device；Or above-mentioned several combination of devices constitute current-limiting inductance.
A kind of soft switch circuit topology based on capacitor charge and discharge, including one end of master switch, its one end and auxiliary switch
Being connected, its other end is connected with one end of auxiliary capacitor, the negative pole of accessory power supply respectively, and another termination auxiliary of auxiliary switch becomes
The one end on the former limit of depressor, the other end on the former limit of auxiliary transformer respectively with the other end, the positive pole of accessory power supply of auxiliary capacitor
It is connected.
Another object of the present utility model is to provide the control of a kind of soft switch circuit topology based on capacitor charge and discharge
Logical sequence method, it is characterised in that: master switch conducting with the control logical sequence of auxiliary switch is: auxiliary switch turns in advance
The delayed disconnection of → master switch conducting → auxiliary switch；Master switch disconnects the control logical sequence with auxiliary switch: auxiliary switch
The advanced delayed disconnection of conducting → master switch disconnection → auxiliary switch.
The time that auxiliary switch turns in advance, equal to or more than auxiliary switch from the time by the end of fully on needs；
Master switch turns on, and auxiliary switch is from being conducting to disconnect the time of needs, and the time turned in advance equal to or more than auxiliary switch adds
Upper master switch is from the time by the end of fully on needs；Master switch disconnect, auxiliary switch from be conducting to disconnect need time,
The time turned in advance equal to or more than auxiliary switch adds that master switch is from the time being conducting to completely switched off needs；Auxiliary capacitor
Completely discharge cycle is equal to or less than auxiliary switch from being conducting to time of disconnecting, and is conducting to main equal to or more than auxiliary switch
Switch the time that fully on or master switch is fully disconnected.
The discharge cycle of auxiliary capacitor is by accessory power supply, current-limiting inductance, auxiliary transformer, auxiliary switch, master switch, power supply
Together decide on load.
During auxiliary capacitor electric discharge, master switch is without forward current and forward voltage, reverse near zero voltage.When auxiliary capacitor is put
When electricity electric current is equal to master switch operating current, master switch can be realized no-voltage and zero current passing or shutoff occur simultaneously.
Auxiliary transformer is interrupting pulse mode of operation, and electric current during auxiliary switch conducting is started from scratch linearly increasing；Auxiliary
Help the electric capacity complete discharge cycle turn-on cycle less than auxiliary switch, electric capacity discharge off when auxiliary switch disconnects；Auxiliary
Switch is at the switching mode of zero current Yu no-voltage.
The energy of auxiliary capacitor electric discharge, is charged to power end by auxiliary transformer, or charges to load end, or gives other
Load charging.
Accessory power supply and auxiliary capacitor circuit in series current-limiting inductance, current-limiting inductance is used for controlling auxiliary switch conducting bypass
The electric current of master switch, and control the electric current of accessory power supply.
Master switch and auxiliary switch can use the electrical switches such as MOSFET, IGBT, GTR, SIT, SITH, SCR, IPM, PIC
Device or module.
Master switch and auxiliary switch can be packaged into a module.
Master switch occurs and drives to be packaged into integrated circuit with the signal of auxiliary switch.
As shown from the above technical solution, this utility model, compared with existing soft switch technique, efficiently solves derailing switch
Part stress is big, and Sofe Switch is easily subject to load and power source change and lost efficacy, and controls complicated and the selection of resonating device parameter is more difficult
Problem.It is low that this utility model has device parameter requirements, and control is simple, stresses of parts is little, and applying frequency wide ranges, Sofe Switch is not
The features such as inefficacy by power supply and the change of load.This utility model is applied to all kinds of device with electronic switching device and electricity
Source converter device, can be effectively improved power-efficient and economy more preferably.
Accompanying drawing explanation
Fig. 1 is soft switch circuit topology figure based on capacitor charge and discharge；
Fig. 2 is soft switch circuit topology figure based on capacitor charge and discharge；
Fig. 3 is without external auxiliary power supply and soft switch circuit topology figure based on capacitor charge and discharge；
Fig. 4 is without external auxiliary power supply and soft switch circuit topology figure based on capacitor charge and discharge；
Fig. 5 is isolated auxiliary transformer and soft switch circuit topology figure based on capacitor charge and discharge；
Fig. 6 is autocoupling type auxiliary transformer and soft switch circuit topology figure based on capacitor charge and discharge；
Fig. 7 is soft switch BUCK converter main circuit based on capacitor charge and discharge；
Fig. 8 is soft switch BUCK based on capacitor charge and discharge-BOOST converter main circuit；
Fig. 9 is Sofe Switch single-phase full bridge inverter main circuit based on capacitor charge and discharge；
In Fig. 1 to Fig. 9,1 is master switch, and 2 is auxiliary switch, and 3 is auxiliary capacitor, and 4 is auxiliary transformer, and 5 is current limliting
Inductance, 6 is accessory power supply, and 7 is auxiliary transformer secondary, and 8 is auxiliary transformer secondary commutator, and 9 is master switch afterflow two pole
Pipe, 10 is system power supply, and 11 is power input electric capacity, and 12 is power output end electric capacity, and 13 is energy storage inductor, and 14 is that power supply is defeated
Entering proper pole, 15 is power input negative pole, and 16 is power output end positive pole, and 17 is power output end negative pole, and 18 is energy storage electricity
Sense fly-wheel diode, 19 is energy storage inductor commutator, and 20 is output transformator.
Detailed description of the invention
In order to architectural feature of the present utility model and effect of being reached are had a better understanding and awareness, in order to relatively
Good embodiment and accompanying drawing coordinate detailed description, are described as follows:
This utility model provides 6 kinds of basic topological diagrams for reference and explanation, on this basis, can develop out more
Topological diagram, but ultimate principle is all identical.Meanwhile, this utility model provides 3 kinds of basic application cases and illustrates for reference,
On the basis of this, more application process can be deduced out, but ultimate principle is the most all similar.
1, soft switch circuit topology figure based on capacitor charge and discharge: include master switch 1, master switch fly-wheel diode 9, auxiliary
Switch 2, auxiliary capacitor 3, auxiliary transformer 4, accessory power supply 6.Described auxiliary switch 2 is connected with auxiliary capacitor 3, auxiliary capacitor 3
Connecting in limit former with auxiliary transformer, master switch 1 is in parallel with the auxiliary switch 2 connected and the former limit of auxiliary transformer；Accessory power supply 6 is just
Pole connects auxiliary capacitor 3 and auxiliary switch 2, and accessory power supply 6 negative pole connects auxiliary capacitor 3 and the former limit of auxiliary transformer；Master switch
Fly-wheel diode 9 is in parallel with master switch 1.
Master switch fly-wheel diode 9 can substitute with the endoparasitic diode of master switch 1.
The energy of auxiliary capacitor 3 electric discharge, is charged to power end by auxiliary transformer secondary 7, or charges to load end, or
To other load chargings.
Accessory power supply 6 charges to auxiliary capacitor 3.Auxiliary switch 2 turns on, and the current loop of auxiliary capacitor 3 electric discharge is: auxiliary
Capacitance cathode → auxiliary switch 2 → master switch 1 and the former limit of master switch fly-wheel diode 9 → auxiliary transformer connected in parallel → auxiliary
Help electric capacity negative pole.
Master switch 1 conducting controls logical sequence with the signal of auxiliary switch 2: auxiliary switch 2 conducting → master switch 1 in advance is led
Logical → delayed disconnection of auxiliary switch 2.Master switch 1 disconnects the signal with auxiliary switch 2 and controls logical sequence: auxiliary switch 2 is advanced
Conducting → master switch 1 disconnects the → delayed disconnection of auxiliary switch 2.
2, soft switch circuit topology figure based on capacitor charge and discharge: include master switch 1, master switch fly-wheel diode 9, auxiliary
Switch 2, auxiliary capacitor 3, auxiliary transformer 4, accessory power supply 6.Connect in described auxiliary switch 2 limit former with auxiliary transformer, auxiliary
Transformer primary side is connected with auxiliary capacitor 3, and master switch 1 is in parallel with the auxiliary switch 2 connected and auxiliary capacitor 3；Accessory power supply 6 is just
Pole connects auxiliary capacitor 3 and the former limit of auxiliary transformer, and accessory power supply 6 negative pole connects auxiliary capacitor 3 and master switch 1；Master switch continues
Stream diode 9 is in parallel with master switch 1.
Master switch fly-wheel diode 9 can substitute with the endoparasitic diode of master switch 1.
The energy of auxiliary capacitor 3 electric discharge, is charged to power end by auxiliary transformer secondary 7, or charges to load end, or
To other load chargings.
Accessory power supply 6 charges to auxiliary capacitor 3.Auxiliary switch 2 turns on, and the current loop of auxiliary capacitor 3 electric discharge is: auxiliary
The former limit of capacitance cathode → auxiliary transformer → auxiliary switch 2 → master switch 1 and master switch fly-wheel diode connected in parallel 9 → auxiliary
Help electric capacity negative pole.
Master switch 1 conducting controls logical sequence with the signal of auxiliary switch 2: auxiliary switch 2 conducting → master switch 1 in advance is led
Logical → delayed disconnection of auxiliary switch 2.Master switch 1 disconnects the signal with auxiliary switch 2 and controls logical sequence: auxiliary switch 2 is advanced
Conducting → master switch 1 disconnects the → delayed disconnection of auxiliary switch 2.
3, without external auxiliary power supply 6 and soft switch circuit topology figure based on capacitor charge and discharge: include that master switch 1, master open
Close fly-wheel diode 9, auxiliary switch 2, auxiliary capacitor 3, auxiliary transformer 4, auxiliary transformer secondary commutator 8.Described auxiliary
Switch 2 is connected with auxiliary capacitor 3, connects in auxiliary capacitor 3 limit former with auxiliary transformer, master switch 1 and the auxiliary switch 2 connected and
The former limit of auxiliary transformer is in parallel；Auxiliary transformer secondary 7 is connected with auxiliary capacitor 3 by auxiliary transformer secondary commutator 8；Main
Switched freewheel diode 9 is in parallel with master switch 1.
Master switch fly-wheel diode 9 can substitute with the endoparasitic diode of master switch 1.
The energy of auxiliary capacitor 3 electric discharge, is fed back by auxiliary transformer secondary 7 and charges to auxiliary capacitor 3；Auxiliary becomes
Depressor 4 is operated in flyback mode；System power supply 10 supplements the energy of loss to auxiliary capacitor 3 by current-limiting inductance 5.
Accessory power supply 6 charges to auxiliary capacitor 3.Auxiliary switch 2 turns on, and the current loop of auxiliary capacitor 3 electric discharge is: auxiliary
Capacitance cathode → auxiliary switch 2 → master switch 1 and the former limit of master switch fly-wheel diode 9 → auxiliary transformer connected in parallel → auxiliary
Help electric capacity negative pole.
Master switch 1 conducting controls logical sequence with the signal of auxiliary switch 2: auxiliary switch 2 conducting → master switch 1 in advance is led
Logical → delayed disconnection of auxiliary switch 2.Master switch 1 disconnects the signal with auxiliary switch 2 and controls logical sequence: auxiliary switch 2 is advanced
Conducting → master switch 1 disconnects the → delayed disconnection of auxiliary switch 2.
4, without external auxiliary power supply 6 and soft switch circuit topology figure based on capacitor charge and discharge: include that master switch 1, master open
Close fly-wheel diode 9, auxiliary switch 2, auxiliary capacitor 3, auxiliary transformer 4, auxiliary transformer secondary commutator 8.Described auxiliary
Connecting in switch 2 limits former with auxiliary transformer, connecting with auxiliary capacitor 3 in the former limit of auxiliary transformer, master switch 1 is opened with the auxiliary connected
Pass 2 and auxiliary capacitor 3 are in parallel；Auxiliary transformer secondary 7 is connected with auxiliary capacitor 3 by auxiliary transformer secondary commutator 8；Main
Switched freewheel diode 9 is in parallel with master switch 1.
Master switch fly-wheel diode 9 can substitute with the endoparasitic diode of master switch 1.
The energy of auxiliary capacitor 3 electric discharge, is fed back by auxiliary transformer secondary 7 and charges to auxiliary capacitor 3；Auxiliary becomes
Depressor 4 is operated in flyback mode；System power supply 10 supplements the energy of loss to auxiliary capacitor 3 by current-limiting inductance 5.
Accessory power supply 6 charges to auxiliary capacitor 3.Auxiliary switch 2 turns on, and the current loop of auxiliary capacitor 3 electric discharge is: auxiliary
The former limit of capacitance cathode → auxiliary transformer → auxiliary switch 2 → master switch 1 and master switch fly-wheel diode connected in parallel 9 → auxiliary
Help electric capacity negative pole.
Master switch 1 conducting controls logical sequence with the signal of auxiliary switch 2: auxiliary switch 2 conducting → master switch 1 in advance is led
Logical → delayed disconnection of auxiliary switch 2.Master switch 1 disconnects the signal with auxiliary switch 2 and controls logical sequence: auxiliary switch 2 is advanced
Conducting → master switch 1 disconnects the → delayed disconnection of auxiliary switch 2.
5, isolated auxiliary transformer 4 and soft switch circuit topology figure based on capacitor charge and discharge: include master switch 1, master
Switched freewheel diode 9, auxiliary switch 2, auxiliary capacitor 3, auxiliary transformer 4, accessory power supply 6, current-limiting inductance 5.Described auxiliary
Switch 2 is connected with auxiliary capacitor 3, connects in auxiliary capacitor 3 limit former with auxiliary transformer, master switch 1 and the auxiliary switch 2 connected and
The former limit of auxiliary transformer is in parallel；Accessory power supply 6 positive pole connects auxiliary capacitor 3 and auxiliary switch 2, auxiliary electricity by current-limiting inductance 5
Source 6 negative pole connects auxiliary capacitor 3 and the former limit of auxiliary transformer；Master switch fly-wheel diode 9 is in parallel with master switch 1.
Master switch fly-wheel diode 9 can substitute with the endoparasitic diode of master switch 1.
The energy of auxiliary capacitor 3 electric discharge, is charged to power end by auxiliary transformer secondary 7, or charges to load end, or
To other load chargings.
Accessory power supply 6 charges to auxiliary capacitor 3.Auxiliary switch 2 turns on, and the current loop of auxiliary capacitor 3 electric discharge is: auxiliary
Capacitance cathode → auxiliary switch 2 → master switch 1 and the former limit of master switch fly-wheel diode 9 → auxiliary transformer connected in parallel → auxiliary
Help electric capacity negative pole.
Master switch 1 conducting controls logical sequence with the signal of auxiliary switch 2: auxiliary switch 2 conducting → master switch 1 in advance is led
Logical → delayed disconnection of auxiliary switch 2.Master switch 1 disconnects the signal with auxiliary switch 2 and controls logical sequence: auxiliary switch 2 is advanced
Conducting → master switch 1 disconnects the → delayed disconnection of auxiliary switch 2.
6, isolated auxiliary transformer 4 and soft switch circuit topology figure based on capacitor charge and discharge: include master switch 1, master
Switched freewheel diode 9, auxiliary switch 2, auxiliary capacitor 3, auxiliary transformer 4, accessory power supply 6, current-limiting inductance 5.Described auxiliary
Switch 2 is connected with auxiliary capacitor 3, and auxiliary capacitor 3 is connected with auxiliary transformer 4, master switch 1 and the auxiliary switch 2 connected and auxiliary
Help transformator 4 in parallel；Accessory power supply 6 positive pole connects auxiliary capacitor 3 and auxiliary switch 2 by current-limiting inductance 5, and accessory power supply 6 is negative
Pole connects auxiliary capacitor 3 and auxiliary transformer 4；Master switch fly-wheel diode 9 is in parallel with master switch 1.
Master switch fly-wheel diode 9 can substitute with the endoparasitic diode of master switch 1.
The energy of auxiliary capacitor 3 electric discharge, is charged to power end by autocoupling type auxiliary transformer 4, or charges to load end,
Or to other load chargings.
Accessory power supply 6 charges to auxiliary capacitor 3.Auxiliary switch 2 turns on, and the current loop of auxiliary capacitor 3 electric discharge is: auxiliary
Capacitance cathode → auxiliary switch 2 → master switch 1 and master switch fly-wheel diode 9 → auxiliary transformer 4 → auxiliary connected in parallel
Electric capacity negative pole.
Master switch 1 conducting controls logical sequence with the signal of auxiliary switch 2: auxiliary switch 2 conducting → master switch 1 in advance is led
Logical → delayed disconnection of auxiliary switch 2.Master switch 1 disconnects the signal with auxiliary switch 2 and controls logical sequence: auxiliary switch 2 is advanced
Conducting → master switch 1 disconnects the → delayed disconnection of auxiliary switch 2.
7, soft switch BUCK converter main circuit based on capacitor charge and discharge: include master switch 1, master switch afterflow two pole
Pipe 9, auxiliary switch 2, auxiliary capacitor 3, auxiliary transformer 4, auxiliary transformer secondary commutator 8, power input electric capacity 11, electricity
Source output terminal electric capacity 12, power input positive pole 14, power input negative pole 15, power output end positive pole 16, power output end
Negative pole 17, energy storage inductor 13, energy storage inductor fly-wheel diode 18.Described master switch 1 emitter stage and auxiliary switch 2 emitter stage and electricity
Source input cathode 15 connects, master switch 1 colelctor electrode and energy storage inductor 13 and energy storage inductor fly-wheel diode 18 anode and auxiliary
Transformer primary side connects；Auxiliary switch 2 colelctor electrode and auxiliary capacitor 3 and current-limiting inductance 5 and auxiliary transformer secondary commutator 8 are even
Connecing, auxiliary capacitor 3 limit former with auxiliary transformer and auxiliary transformer secondary 7 are connected；Auxiliary transformer secondary 7 is by auxiliary transformation
Device secondary commutator 8 is connected with auxiliary capacitor 3；The negative electrode of energy storage inductor fly-wheel diode 18 and power input positive pole 14 and electricity
Source output terminal positive pole 16 connects；Master switch fly-wheel diode 9 is in parallel with master switch 1.
The energy of auxiliary capacitor 3 electric discharge, is fed back by auxiliary transformer secondary 7 and charges to auxiliary capacitor 3；Auxiliary becomes
Depressor 4 is operated in flyback mode；Power input positive pole 14 supplements the energy of loss to auxiliary capacitor 3 by current-limiting inductance 5.
Accessory power supply 6 charges to auxiliary capacitor 3.Auxiliary switch 2 turns on, and the current loop of auxiliary capacitor 3 electric discharge is: auxiliary
Capacitance cathode → auxiliary switch 2 → master switch 1 and the former limit of master switch fly-wheel diode 9 → auxiliary transformer connected in parallel → auxiliary
Help electric capacity negative pole.
Master switch 1 conducting controls logical sequence with the signal of auxiliary switch 2: auxiliary switch 2 conducting → master switch 1 in advance is led
Logical → delayed disconnection of auxiliary switch 2.Master switch 1 disconnects the signal with auxiliary switch 2 and controls logical sequence: auxiliary switch 2 is advanced
Conducting → master switch 1 disconnects the → delayed disconnection of auxiliary switch 2.
The time that auxiliary switch 2 turns in advance, equal to or more than auxiliary switch 2 from by the end of fully on needs time
Between.Master switch 1 turns on, and auxiliary switch 2, from being conducting to disconnect the time of needs, turns in advance equal to or more than auxiliary switch 2
Time adds that master switch 1 is from the time by the end of fully on needs.Master switch 1 disconnects, and auxiliary switch 2 needs from being conducting to disconnection
The time wanted, the time turned in advance equal to or more than auxiliary switch 2 plus master switch 1 from be conducting to completely switched off needs time
Between.
The complete discharge cycle of auxiliary capacitor 3 equal to or less than auxiliary switch 2 from being conducting to time of disconnecting, and equal to or big
It is conducting to the time that master switch 1 is fully on or master switch 1 is fully disconnected in auxiliary switch 2.The discharge cycle of auxiliary capacitor 3 by
Accessory power supply 6, current-limiting inductance 5, auxiliary transformer 4, auxiliary switch 2, master switch 1, power supply and load together decide on.
When auxiliary capacitor 3 discharges, master switch 1 is without forward current and forward voltage, reverse near zero voltage.Work as auxiliary capacitor
When 3 discharge currents are equal to master switch 1 operating current, master switch 1 can be realized no-voltage and zero current passing or shutoff occur simultaneously.
Adjust auxiliary transformer 4 and current-limiting inductance 5 and load and the reactance corresponding relation of power supply, auxiliary capacitor 3 can be realized
Discharge current equal to the operating current of master switch 1.
Auxiliary transformer 4 is interrupting pulse mode of operation, and electric current when auxiliary switch 2 turns on is started from scratch linearly increasing；
The complete discharge cycle of auxiliary capacitor 3 is less than the turn-on cycle of auxiliary switch 2, electric capacity discharge off when auxiliary switch 2 disconnects；
Auxiliary switch 2 is operated in the switching mode of zero current and no-voltage.
Master switch fly-wheel diode 9 can substitute with the endoparasitic diode of master switch 1.
8, soft switch BUCK based on capacitor charge and discharge-BOOST converter main circuit: include that master switch 1, master switch are continuous
Stream diode 9, auxiliary switch 2, auxiliary capacitor 3, auxiliary transformer 4, auxiliary transformer secondary commutator 8, power input electricity
Appearance 11, power output end electric capacity 12, power input positive pole 14, power input negative pole 15, power output end positive pole 16, power supply
Negative pole of output end 17, energy storage inductor 13, energy storage inductor fly-wheel diode 18, energy storage inductor commutator 19.Described master switch 1 is launched
Pole is connected with auxiliary switch 2 emitter stage and power input negative pole 15, master switch 1 colelctor electrode and energy storage inductor 13 and energy storage inductor
Fly-wheel diode 18 anode and the former limit of auxiliary transformer connect；Auxiliary switch 2 colelctor electrode connects with auxiliary capacitor 3 and current-limiting inductance 5
Connecing, auxiliary capacitor 3 limit former with auxiliary transformer and energy storage inductor commutator 19 anode are connected；Auxiliary transformer secondary 7 is by auxiliary
Transformer secondary commutator 8 is helped to be connected with power output end electric capacity 12；The negative electrode of energy storage inductor fly-wheel diode 18 is defeated with power supply
Go out proper pole 16 and power output end electric capacity 12 connects；Master switch fly-wheel diode 9 is in parallel with master switch 1.
The energy of auxiliary capacitor 3 electric discharge, charges to power output end electric capacity 12 by auxiliary transformer secondary 7.Energy storage electricity
Sense commutator 19 assists winding to be connected with energy storage inductor 13, and energy storage inductor commutator 19 negative electrode gives auxiliary electricity by current-limiting inductance 5
Hold 3 chargings.
Accessory power supply 6 charges to auxiliary capacitor 3.Auxiliary switch 2 turns on, and the current loop of auxiliary capacitor 3 electric discharge is: auxiliary
Capacitance cathode → auxiliary switch 2 → master switch 1 and the former limit of master switch fly-wheel diode 9 → auxiliary transformer connected in parallel → auxiliary
Help electric capacity negative pole.
Master switch 1 conducting controls logical sequence with the signal of auxiliary switch 2: auxiliary switch 2 conducting → master switch 1 in advance is led
Logical → delayed disconnection of auxiliary switch 2.Master switch 1 disconnects the signal with auxiliary switch 2 and controls logical sequence: auxiliary switch 2 is advanced
Conducting → master switch 1 disconnects the → delayed disconnection of auxiliary switch 2.
The time that auxiliary switch 2 turns in advance, equal to or more than auxiliary switch 2 from by the end of fully on needs time
Between.Master switch 1 turns on, and auxiliary switch 2, from being conducting to disconnect the time of needs, turns in advance equal to or more than auxiliary switch 2
Time adds that master switch 1 is from the time by the end of fully on needs.Master switch 1 disconnects, and auxiliary switch 2 needs from being conducting to disconnection
The time wanted, the time turned in advance equal to or more than auxiliary switch 2 plus master switch 1 from be conducting to completely switched off needs time
Between.
The complete discharge cycle of auxiliary capacitor 3 equal to or less than auxiliary switch 2 from being conducting to time of disconnecting, and equal to or big
It is conducting to the time that master switch 1 is fully on or master switch 1 is fully disconnected in auxiliary switch 2.The discharge cycle of auxiliary capacitor 3 by
Accessory power supply 6, current-limiting inductance 5, auxiliary transformer 4, auxiliary switch 2, master switch 1, power supply and load together decide on.
When auxiliary capacitor 3 discharges, master switch 1 is without forward current and forward voltage, reverse near zero voltage.Work as auxiliary capacitor
When 3 discharge currents are equal to master switch 1 operating current, master switch 1 can be realized no-voltage and zero current passing or shutoff occur simultaneously.
Adjust auxiliary transformer 4 and current-limiting inductance 5 and load and the reactance corresponding relation of power supply, auxiliary capacitor 3 can be realized
Discharge current equal to the operating current of master switch 1.
Auxiliary transformer 4 is interrupting pulse mode of operation, and electric current when auxiliary switch 2 turns on is started from scratch linearly increasing；
The complete discharge cycle of auxiliary capacitor 3 is less than the turn-on cycle of auxiliary switch 2, electric capacity discharge off when auxiliary switch 2 disconnects；
Auxiliary switch 2 is operated in the switching mode of zero current and no-voltage.
Master switch fly-wheel diode 9 can substitute with the endoparasitic diode of master switch 1.
9, Sofe Switch single-phase full bridge inverter main circuit based on capacitor charge and discharge: four master switchs 1 are connected into two strings, two
2 colelctor electrodes of group series connection master switch 1 are connected with power input positive pole 14,2 emitter stages of two groups of series connection master switchs 1 and electricity
Source input cathode 15 connects；The collector and emitter of two string master switchs 1 is connected with the output former limit of transformator 20 respectively.
4 master switch 1 emitter stages are connected with 4 auxiliary switch 2 emitter stages respectively；4 auxiliary switch 2 colelctor electrodes respectively with
4 auxiliary capacitors 3 connect；4 auxiliary capacitors 3 are connected with 4 former limits of auxiliary transformer respectively；4 former limits of auxiliary transformer are divided
It is not connected with 4 master switch 1 colelctor electrodes；4 master switch fly-wheel diodes 9 are in parallel with 4 master switchs 1 respectively.
Each soft switch circuit operation principle is as follows:
The energy of auxiliary capacitor 3 electric discharge, is charged to power end by auxiliary transformer secondary 7, or charges to load end, or
To other load chargings.
Accessory power supply 6 charges to auxiliary capacitor 3.Auxiliary switch 2 turns on, and the current loop of auxiliary capacitor 3 electric discharge is: auxiliary
Capacitance cathode → auxiliary switch 2 → master switch 1 and the former limit of master switch fly-wheel diode 9 → auxiliary transformer connected in parallel → auxiliary
Help electric capacity negative pole.
Master switch 1 conducting controls logical sequence with the signal of auxiliary switch 2: auxiliary switch 2 conducting → master switch 1 in advance is led
Logical → delayed disconnection of auxiliary switch 2.Master switch 1 disconnects the signal with auxiliary switch 2 and controls logical sequence: auxiliary switch 2 is advanced
Conducting → master switch 1 disconnects the → delayed disconnection of auxiliary switch 2.
The time that auxiliary switch 2 turns in advance, equal to or more than auxiliary switch 2 from by the end of fully on needs time
Between.Master switch 1 turns on, and auxiliary switch 2, from being conducting to disconnect the time of needs, turns in advance equal to or more than auxiliary switch 2
Time adds that master switch 1 is from the time by the end of fully on needs.Master switch 1 disconnects, and auxiliary switch 2 needs from being conducting to disconnection
The time wanted, the time turned in advance equal to or more than auxiliary switch 2 plus master switch 1 from be conducting to completely switched off needs time
Between.
The complete discharge cycle of auxiliary capacitor 3 equal to or less than auxiliary switch 2 from being conducting to time of disconnecting, and equal to or big
It is conducting to the time that master switch 1 is fully on or master switch 1 is fully disconnected in auxiliary switch 2.The discharge cycle of auxiliary capacitor 3 by
Accessory power supply 6, auxiliary transformer 4, auxiliary switch 2, master switch 1, power supply and load together decide on.
When auxiliary capacitor 3 discharges, master switch 1 is without forward current and forward voltage, reverse near zero voltage.Work as auxiliary capacitor
When 3 discharge currents are equal to master switch 1 operating current, master switch 1 can be realized no-voltage and zero current passing or shutoff occur simultaneously.
Adjust auxiliary transformer 4 and accessory power supply 6 and load and the corresponding relation of power supply, putting of auxiliary capacitor 3 can be realized
Electricity electric current is equal to the operating current of master switch 1.
Auxiliary transformer 4 is interrupting pulse mode of operation, and electric current when auxiliary switch 2 turns on is started from scratch linearly increasing；
The complete discharge cycle of auxiliary capacitor 3 is less than the turn-on cycle of auxiliary switch 2, electric capacity discharge off when auxiliary switch 2 disconnects；
Auxiliary switch 2 is operated in the switching mode of zero current and no-voltage.
Master switch fly-wheel diode 9 can substitute with the endoparasitic diode of master switch 1.
The secondary of output transformator 20 is to load output energy.
Of the present utility model ultimate principle, principal character and of the present utility model advantage have more than been shown and described.One's own profession
Skilled person will appreciate that of industry, this utility model is not restricted to the described embodiments, described in above-described embodiment and description
Simply principle of the present utility model, on the premise of without departing from this utility model spirit and scope, this utility model also has respectively
Planting changes and improvements, these changes and improvements both fall within the range of claimed this utility model.This utility model requirement
Protection domain defined by appending claims and equivalent thereof.
Claims (8)
1. a soft switch circuit topology based on capacitor charge and discharge, it is characterised in that: include that master switch, one termination auxiliary become
The one end on the former limit of depressor, its other end is connected with one end of auxiliary switch, the other end of auxiliary switch respectively with auxiliary capacitor
One end, accessory power supply positive pole be connected, the other end of auxiliary capacitor respectively with the negative pole of accessory power supply, auxiliary transformer former
The other end on limit is connected.
Soft switch circuit topology based on capacitor charge and discharge the most according to claim 1, it is characterised in that: also include main opening
Closing fly-wheel diode, master switch fly-wheel diode is in parallel with master switch.
Soft switch circuit topology based on capacitor charge and discharge the most according to claim 1, it is characterised in that: also include auxiliary
Switched freewheel diode, auxiliary switch fly-wheel diode is in parallel with auxiliary switch.
Soft switch circuit topology based on capacitor charge and discharge the most according to claim 1, it is characterised in that: described auxiliary becomes
The secondary of depressor is charged to auxiliary capacitor by commutator, and system power supply passes through current-limiting inductance to auxiliary capacitor boost charge.
Soft switch circuit topology based on capacitor charge and discharge the most according to claim 2, it is characterised in that: described master switch
Fly-wheel diode is master switch endophyte diode.
Soft switch circuit topology based on capacitor charge and discharge the most according to claim 3, it is characterised in that: described auxiliary is opened
Closing fly-wheel diode is auxiliary switch endophyte diode.
Soft switch circuit topology based on capacitor charge and discharge the most according to claim 4, it is characterised in that: described current limliting electricity
Sense is connected in accessory power supply loop, and described current-limiting inductance is any one in induction reactance device, impedance device, capacitive reactance device.
8. a soft switch circuit topology based on capacitor charge and discharge, it is characterised in that: including master switch, its one end is opened with auxiliary
The one end closed is connected, and its other end is connected with one end of auxiliary capacitor, the negative pole of accessory power supply respectively, the other end of auxiliary switch
Connect the one end on the former limit of auxiliary transformer, the other end on the former limit of auxiliary transformer respectively with the other end of auxiliary capacitor, auxiliary electricity
The positive pole in source is connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620615090.XU CN205847063U (en) | 2016-06-17 | 2016-06-17 | A kind of soft switch circuit topology based on capacitor charge and discharge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620615090.XU CN205847063U (en) | 2016-06-17 | 2016-06-17 | A kind of soft switch circuit topology based on capacitor charge and discharge |
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| Publication Number | Publication Date |
|---|---|
| CN205847063U true CN205847063U (en) | 2016-12-28 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620615090.XU Withdrawn - After Issue CN205847063U (en) | 2016-06-17 | 2016-06-17 | A kind of soft switch circuit topology based on capacitor charge and discharge |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106411105A (en) * | 2016-06-17 | 2017-02-15 | 安徽长远绿色能源有限公司 | Soft-switching circuit topology based on charging and discharging of capacitor |
-
2016
- 2016-06-17 CN CN201620615090.XU patent/CN205847063U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106411105A (en) * | 2016-06-17 | 2017-02-15 | 安徽长远绿色能源有限公司 | Soft-switching circuit topology based on charging and discharging of capacitor |
| CN106411105B (en) * | 2016-06-17 | 2019-03-15 | 安徽长远绿色能源有限公司 | A kind of soft switch circuit topology based on capacitor charge and discharge |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20161228 Effective date of abandoning: 20190315 |
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| AV01 | Patent right actively abandoned |