CN109347398B - Current commutation topological structure of two-phase switch reluctance motor based on IPM - Google Patents
Current commutation topological structure of two-phase switch reluctance motor based on IPM Download PDFInfo
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- CN109347398B CN109347398B CN201811478636.1A CN201811478636A CN109347398B CN 109347398 B CN109347398 B CN 109347398B CN 201811478636 A CN201811478636 A CN 201811478636A CN 109347398 B CN109347398 B CN 109347398B
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- 238000004804 winding Methods 0.000 claims abstract description 61
- 230000001629 suppression Effects 0.000 claims abstract description 11
- 239000003990 capacitor Substances 0.000 claims description 9
- 238000002955 isolation Methods 0.000 claims description 4
- 230000000694 effects Effects 0.000 claims description 3
- 238000001914 filtration Methods 0.000 claims description 2
- 238000000034 method Methods 0.000 claims description 2
- 230000000903 blocking effect Effects 0.000 claims 1
- 230000001737 promoting effect Effects 0.000 abstract description 2
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P25/00—Arrangements or methods for the control of AC motors characterised by the kind of AC motor or by structural details
- H02P25/02—Arrangements or methods for the control of AC motors characterised by the kind of AC motor or by structural details characterised by the kind of motor
- H02P25/08—Reluctance motors
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P25/00—Arrangements or methods for the control of AC motors characterised by the kind of AC motor or by structural details
- H02P25/02—Arrangements or methods for the control of AC motors characterised by the kind of AC motor or by structural details characterised by the kind of motor
- H02P25/08—Reluctance motors
- H02P25/086—Commutation
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P25/00—Arrangements or methods for the control of AC motors characterised by the kind of AC motor or by structural details
- H02P25/02—Arrangements or methods for the control of AC motors characterised by the kind of AC motor or by structural details characterised by the kind of motor
- H02P25/08—Reluctance motors
- H02P25/092—Converters specially adapted for controlling reluctance motors
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P25/00—Arrangements or methods for the control of AC motors characterised by the kind of AC motor or by structural details
- H02P25/02—Arrangements or methods for the control of AC motors characterised by the kind of AC motor or by structural details characterised by the kind of motor
- H02P25/08—Reluctance motors
- H02P25/092—Converters specially adapted for controlling reluctance motors
- H02P25/0925—Converters specially adapted for controlling reluctance motors wherein the converter comprises only one switch per phase
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Control Of Electric Motors In General (AREA)
Abstract
The invention discloses a current commutation topological structure of a two-phase switch reluctance motor based on an IPM (intelligent power module), which comprises an input rectifying circuit, a filter circuit, an IPM power circuit and an anti-crosstalk current suppression circuit, wherein the input end of the input rectifying circuit is connected with an alternating current power supply, the output end of the input rectifying circuit is connected with the input end of the filter circuit, the output end of the filter circuit is connected with the IPM power circuit, the IPM power circuit adopts a three-phase symmetrical bridge type IPM, and the IPM power circuit is provided with the anti-crosstalk current suppression circuit for isolating A, B two-phase winding currents of the switch reluctance motor. The IPM power circuit adopts the three-phase symmetrical bridge type IPM, and can change the original need of using two IPMs into the need of only one IPM, thereby reducing the cost and rapidly promoting the development of the switched reluctance motor industry.
Description
Technical Field
The invention relates to the field of motors, in particular to a current commutation topological structure of a two-phase switch reluctance motor based on IPM.
Background
Switched reluctance motors have been developed for decades that require a three-phase asymmetric power topology, and a dedicated IPM module with little or no such structure is commercially available, so manufacturers must implement the drive circuits by using 2 blocks of 3-to-3 bridge IPM, which directly results in increased costs.
Disclosure of Invention
In order to solve the technical problems, the invention provides the current commutation topological structure of the IPM-based two-phase switch reluctance motor, which has the advantages of simple structure and low cost.
The technical scheme for solving the problems is as follows: the utility model provides a two-phase switch reluctance motor electric current commutation topological structure based on IPM, includes input rectifier circuit, filter circuit, IPM power circuit, prevents crosstalk current suppression circuit, input rectifier circuit's input termination alternating current power supply, input rectifier circuit's output is connected with filter circuit input, and filter circuit output links to each other with the IPM power circuit, the IPM power circuit adopts three-phase symmetry bridge type IPM, is equipped with in the IPM power circuit and is used for carrying out the crosstalk current suppression circuit who keeps apart switch reluctance motor's A, B two-phase winding electric currents.
According to the current commutation topological structure of the two-phase switch reluctance motor based on the IPM, the input rectifying circuit comprises the first rectifying diode, the fourth rectifying diode, the anode of the alternating current power supply is connected with the anode of the first rectifying diode and the cathode of the third rectifying diode, the cathode of the alternating current power supply is connected with the anode of the second rectifying diode and the cathode of the fourth rectifying diode, the cathode of the first rectifying diode and the cathode of the second rectifying diode are connected together to output positive current, and the anode of the third rectifying diode and the anode of the fourth rectifying diode are connected together to output negative current.
According to the current commutation topological structure of the two-phase switch reluctance motor based on the IPM, the filter circuit comprises the capacitor, one end of the capacitor is connected with the cathode of the first rectifier diode, and the other end of the capacitor is connected with the anode of the third rectifier diode.
The IPM power circuit comprises a first transistor, a second transistor, a third transistor, a fifth transistor, a fourth transistor, a second transistor, a third transistor, a fourth transistor, a sixth transistor, a fourth transistor, a second transistor, a sixth transistor, a positive electrode of the first diode is connected with the emitter of the first transistor, a negative electrode of the first diode is connected with the collector of the first transistor, the positive pole of second diode is connected the projecting pole of second triode, the negative pole of second diode is connected the collecting electrode of second triode, the projecting pole of third triode is connected to the positive pole of third diode, the collecting electrode of third triode is connected to the negative pole of third diode, the projecting pole of fourth triode is connected to the positive pole of fourth diode, the collecting electrode of fourth triode is connected to the negative pole of fourth diode, the projecting pole of fifth triode is connected to the positive pole of fifth diode, the collecting electrode of fifth triode is connected to the negative pole of fifth diode, the projecting pole of sixth triode is connected to the positive pole of sixth diode, the collecting electrode of sixth triode is connected to the negative pole of sixth diode, the base of first through sixth triode all is the control end.
Above-mentioned two-phase switch reluctance motor electric current commutation topological structure based on IPM, anti-crosstalk electric current suppression circuit includes seventh diode and eighth diode, the projecting pole of first triode is connected to the one end of switch reluctance motor's A phase winding, the positive pole of seventh diode is connected to the other end of switch reluctance motor's A phase winding, the projecting pole of third triode is connected to the negative pole of seventh diode, the projecting pole of fifth triode is connected to the one end of switch reluctance motor's B phase winding, the positive pole of eighth diode is connected to the other end of switch reluctance motor's B phase winding, the projecting pole of third triode is connected to the negative pole of eighth diode.
The invention has the beneficial effects that: the IPM power circuit adopts the three-phase symmetrical bridge type IPM, and can change the original need of using two IPMs into the need of only one IPM, thereby reducing the cost and rapidly promoting the development of the switched reluctance motor industry.
Drawings
Fig. 1 is a topology diagram of the present invention.
Fig. 2 is a flow chart of drive current for a phase winding of a two-phase switched reluctance motor.
Fig. 3 is a flow chart of the freewheel current of the a-phase winding of the two-phase switched reluctance motor.
Fig. 4 is a flow chart of drive current for a B-phase winding of a two-phase switched reluctance motor.
Fig. 5 is a flow chart of the freewheel current of the B-phase winding of the two-phase switched reluctance motor.
Detailed Description
The invention is further described below with reference to the drawings and examples.
As shown in fig. 1, the current commutation topological structure of the two-phase switched reluctance motor based on the IPM comprises an input rectifying circuit, a filter circuit, an IPM power circuit and an anti-crosstalk current suppression circuit, wherein the input end of the input rectifying circuit is connected with an alternating current power supply, the output end of the input rectifying circuit is connected with the input end of the filter circuit, the output end of the filter circuit is connected with the IPM power circuit, the IPM power circuit adopts a three-phase symmetrical bridge type IPM, and the IPM power circuit is provided with the anti-crosstalk current suppression circuit for isolating A, B two-phase winding currents of the switched reluctance motor.
The input rectifying circuit comprises first to fourth rectifying diodes D1-D4, the positive electrode of an alternating current power supply is connected with the positive electrode of the first rectifying diode D1 and the negative electrode of the third rectifying diode D3, the negative electrode of the alternating current power supply is connected with the positive electrode of the second rectifying diode D2 and the negative electrode of the fourth rectifying diode D4, the negative electrode of the first rectifying diode D1 and the negative electrode of the second rectifying diode D2 are connected together to output positive current VBUS+, and the positive electrode of the third rectifying diode D3 and the positive electrode of the fourth rectifying diode D4 are connected together to output negative current VBUS-.
The filter circuit comprises a capacitor C1, one end of the capacitor C1 is connected with the cathode of the first rectifying diode D1, and the other end of the capacitor C1 is connected with the anode of the third rectifying diode D3.
The IPM power circuit comprises first to sixth triodes VT1-VT6, first to sixth diodes VD1-VD6, wherein the collector of the first triode VT1, the collector of the third triode VT3 and the collector of the fifth triode VT5 are connected together and connected with positive current VBUS+, the emitter of the first triode VT1, the emitter of the third triode VT3 and the emitter of the fifth triode VT5 are respectively connected with the collector of the fourth triode VT4, the collector of the second triode VT2 and the collector of the sixth triode VT6, the emitter of the fourth triode VT4, the emitter of the second triode VT2 and the emitter of the sixth triode VT6 are connected together and connected with negative current VBUS-, the positive electrode of the third triode VD1 is connected with the emitter of the first triode VD1, the negative electrode of the second triode VT2 is connected with the emitter of the second triode VT2, the negative electrode of the second triode 2 is connected with the collector of the third triode VT4, the negative electrode of the fourth triode VT6 is connected with the positive electrode of the fourth triode VT4, the negative electrode of the fourth triode VT3 is connected with the negative electrode of the fourth triode VT6, the negative electrode of the fifth triode VT4 is connected with the positive electrode of the fourth triode VD6, and the negative electrode of the fifth triode VT6 is connected with the fourth triode VD 6.
The crosstalk-prevention current suppression circuit comprises a seventh diode VD7 and an eighth diode VD8, one end of an A-phase winding of the switch reluctance motor is connected with an emitter of the first triode VT1, the other end of the A-phase winding of the switch reluctance motor is connected with a positive electrode of the seventh diode VD7, a negative electrode of the seventh diode VD7 is connected with an emitter of the third triode VT3, one end of a B-phase winding of the switch reluctance motor is connected with an emitter of the fifth triode VT5, the other end of the B-phase winding of the switch reluctance motor is connected with a positive electrode of the eighth diode VD8, and a negative electrode of the eighth diode VD8 is connected with an emitter of the third triode VT 3.
It should be noted that, under the application of low power, the crosstalk-preventing current suppressing circuit can use a diode with the same performance as VD1, but under the application of high power, the voltage drop loss of the diode will be great, and a thyristor needs to be adopted for substitution, and the trigger signal of the thyristor and the start chopping signal of the corresponding winding are sent out simultaneously, so that the on-state loss is reduced. When a diode is used as winding current isolation, an upper tube chopping mode is adopted, and the method specifically comprises the following steps: when the phase A is electrified, the chopper tube is VT1 and VT2 is directly connected; when the phase B is electrified, the chopping tube is VT5 and VT2 is directly connected, so that the power loss of the tube can be increased because VT2 is always in a chopping state, and the switching loss is respectively added to VT1 and VT5, so that the heat consumption is dispersed, and the overall performance is effectively improved.
When using the thyristor as winding current isolation, adopt down tube chopping mode, specifically: when the phase A is electrified, the chopper tube is VT2 and VT1 is directly communicated; when the phase B is electrified, the chopper tube is VT2 and VT5 is directly communicated. After such treatment, if the phase A winding is commutated to the phase B winding after being electrified, and when chopping, due to the turn-off of VT2, the cathode voltage at VD7 is the sum of the voltage drops of VBUS+ and one VD3, the anode voltage is half of VBUS+, the cathode voltage is higher than the anode voltage, and the thyristor has no forward current at this time, and the VD7 is turned off; if the B phase winding is commutated to the A phase winding after being electrified, and when chopping is carried out, the cathode voltage at VD8 is the sum of VBUS+ and the voltage drop of one VD3 due to the shutoff of VT2, the anode voltage is half of VBUS+, the cathode voltage is higher than the anode voltage, the thyristor has no forward current at the moment, and the VD8 is shut off.
The working principle of the invention is as follows: the ac input is rectified by a diode, and is subjected to C1 capacitive filtering to supply power to an IPM (dashed box portion) via a bus. VT3, VT4, VT6 are always in the blocked state in the above figures.
As shown in fig. 2, when driving the a-phase winding, VT1 and VT2 are turned on, current flows from vbus+ through VT1, the a-phase winding, VD7, VT2, and back to VBUS-, and current does not flow through the B-phase winding due to VD8, and the B-phase winding current is not disturbed.
As shown in FIG. 3, when the phase A winding needs freewheeling, VT1 and VT2 are turned off, and current flows from VBUS-, VD4, phase A windings, VD7 and VD3 back to VBUS+, and the freewheeling mode directly feeds back the energy in the windings to the bus, so that the freewheeling time is short and the effect is good.
As shown in fig. 4, when driving the B-phase winding, VT5 and VT2 are turned on, and current flows from vbus+ through VT5, B-phase winding, VD8, VT2, and back to VBUS-, and current does not flow through the a-phase winding due to VD7, and the a-phase winding current is not disturbed.
As shown in FIG. 5, when the B-phase winding needs to freewheel, VT5 and VT2 are turned off, and current flows from VBUS-, VD6, B-phase windings, VD8 and VD3 back to VBUS+, and the freewheel mode directly feeds back the energy in the windings to the bus, so that the freewheel time is short and the effect is good.
Claims (1)
1. The utility model provides a two-phase switch reluctance motor electric current commutation topological structure based on IPM which characterized in that: the anti-crosstalk power supply comprises an input rectifying circuit, a filter circuit, an IPM power circuit and an anti-crosstalk current suppression circuit, wherein the input end of the input rectifying circuit is connected with an alternating current power supply, the output end of the input rectifying circuit is connected with the input end of the filter circuit, the output end of the filter circuit is connected with the IPM power circuit, the IPM power circuit adopts a three-phase symmetrical bridge type IPM, and the IPM power circuit is internally provided with the anti-crosstalk current suppression circuit for isolating A, B two-phase winding currents of the switched reluctance motor;
The input rectifying circuit comprises first to fourth rectifying diodes, the positive electrode of the alternating current power supply is connected with the positive electrode of the first rectifying diode and the negative electrode of the third rectifying diode, the negative electrode of the alternating current power supply is connected with the positive electrode of the second rectifying diode and the negative electrode of the fourth rectifying diode, the negative electrode of the first rectifying diode and the negative electrode of the second rectifying diode are connected together to output positive current, and the positive electrode of the third rectifying diode and the positive electrode of the fourth rectifying diode are connected together to output negative current;
the filter circuit comprises a capacitor, one end of the capacitor is connected with the cathode of the first rectifying diode, and the other end of the capacitor is connected with the anode of the third rectifying diode;
The IPM power circuit comprises first to sixth triodes, wherein the collector electrode of the first triode, the collector electrode of the third triode and the collector electrode of the fifth triode are connected together and connected with positive current, the emitter electrode of the first triode, the emitter electrode of the third triode and the emitter electrode of the fifth triode are respectively connected with the collector electrode of the fourth triode, the collector electrode of the second triode and the collector electrode of the sixth triode, the emitter electrode of the fourth triode, the emitter electrode of the second triode and the emitter electrode of the sixth triode are connected together and connected with negative current, the positive electrode of the first diode is connected with the emitter electrode of the first triode, the negative electrode of the second diode is connected with the emitter electrode of the second triode, the negative electrode of the second diode is connected with the collector electrode of the second triode, the positive electrode of the third diode is connected with the emitter electrode of the third triode, the positive electrode of the fourth diode is connected with the emitter electrode of the fourth triode, the negative electrode of the fourth diode is connected with the negative electrode of the fourth triode, the negative electrode of the fourth diode is connected with the positive electrode of the fifth diode is connected with the negative electrode of the sixth triode, and the positive electrode of the fifth diode is connected with the negative electrode of the sixth triode;
The crosstalk-prevention current suppression circuit comprises a seventh diode and an eighth diode, one end of an A-phase winding of the switch reluctance motor is connected with an emitter of the first triode, the other end of the A-phase winding of the switch reluctance motor is connected with an anode of the seventh diode, a cathode of the seventh diode is connected with an emitter of the third triode, one end of a B-phase winding of the switch reluctance motor is connected with an emitter of the fifth triode, the other end of the B-phase winding of the switch reluctance motor is connected with an anode of the eighth diode, and a cathode of the eighth diode is connected with an emitter of the third triode;
When a diode is used as winding current isolation, an upper tube chopping mode is adopted, and the method specifically comprises the following steps: when the phase A is electrified, the chopper tube is a first triode, and the second triode is directly connected; when the phase B is electrified, the chopper tube is a fifth triode, and the second triode is directly connected, so that the power loss of the chopper tube is prevented from being increased because the second triode is always in a chopping state, and the switching loss is respectively added to the first triode and the fifth triode, so that the heat loss is dispersed, and the overall performance is improved;
When using the thyristor as winding current isolation, adopt down tube chopping mode, specifically: when the phase A is electrified, the chopper tube is a second triode, and the first triode is directly connected; when the phase B is electrified, the chopper tube is a second triode, and a fifth triode is directly connected; after such treatment, if the phase A winding is commutated to the phase B winding after being electrified, and when chopping, the cathode voltage of the seventh diode is the sum of the voltage drops of VBUS+ and a third diode due to the turn-off of the second triode, the anode voltage is half of VBUS+, the cathode voltage is higher than the anode voltage, the thyristor has no forward current at the moment, and the seventh diode is turned off; if the B phase winding is commutated to the A phase winding after being electrified, and when chopping is carried out, the cathode voltage of the eighth diode is the sum of the voltage drops of VBUS+ and a third diode due to the turn-off of the second triode, the anode voltage is half of VBUS+, the cathode voltage is higher than the anode voltage, the thyristor has no forward current at the moment, and the eighth diode is turned off;
The alternating current input is rectified through a diode, and after capacitive filtering, bus power is supplied to the IPM; the third triode, the fourth triode and the sixth triode are always in a blocking state;
When the phase A winding is driven, the first triode and the second triode are conducted, current flows from VBUS+ to the first triode, the phase A winding, the seventh diode and the second triode, and then flows back to VBUS-, the current does not flow through the phase B winding due to the action of the eighth diode, and the current of the phase B winding is not disturbed;
When the phase A winding needs freewheeling, the first triode and the second triode are turned off, and the current flows back to VBUS+ from VBUS-, the fourth diode, the phase A winding, the seventh diode and the third diode, so that the energy in the winding is directly fed back to the bus in the freewheeling mode;
when the B-phase winding is driven, the fifth triode and the second triode are conducted, current flows from VBUS+ to the fifth triode, the B-phase winding, the eighth diode and the second triode, and then flows back to VBUS-, the current does not flow through the A-phase winding due to the effect of the seventh diode, and the current of the A-phase winding is not disturbed;
When the B phase winding needs to follow current, the fifth triode and the second triode are turned off, and the current flows back to VBUS+ from VBUS-, the sixth diode, the B phase winding, the eighth diode and the third diode, so that the energy in the winding is directly fed back to the bus in the follow current mode.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811478636.1A CN109347398B (en) | 2018-12-05 | 2018-12-05 | Current commutation topological structure of two-phase switch reluctance motor based on IPM |
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| CN201811478636.1A CN109347398B (en) | 2018-12-05 | 2018-12-05 | Current commutation topological structure of two-phase switch reluctance motor based on IPM |
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| CN109347398A CN109347398A (en) | 2019-02-15 |
| CN109347398B true CN109347398B (en) | 2024-05-14 |
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| CN110905921B (en) * | 2019-11-29 | 2020-10-16 | 华中科技大学 | Annular topology four-bridge arm control device and method applied to magnetic suspension bearing |
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| CN209001869U (en) * | 2018-12-05 | 2019-06-18 | 长沙市开启时代电子有限公司 | A kind of two-phase switched reluctance machines current commutation topological structure based on IPM |
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| CN103391032A (en) * | 2012-05-11 | 2013-11-13 | 三星电机株式会社 | Switching control apparatus for two phase switched reluctance motor and method thereof |
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