CN104578178A - Adjustment method of parallel generation power of shaft power generation system and diesel generator - Google Patents
Adjustment method of parallel generation power of shaft power generation system and diesel generator Download PDFInfo
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- CN104578178A CN104578178A CN201410836156.3A CN201410836156A CN104578178A CN 104578178 A CN104578178 A CN 104578178A CN 201410836156 A CN201410836156 A CN 201410836156A CN 104578178 A CN104578178 A CN 104578178A
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/38—Arrangements for parallely feeding a single network by two or more generators, converters or transformers
- H02J3/46—Controlling of the sharing of output between the generators, converters, or transformers
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Abstract
The invention discloses an adjustment method of parallel generation power of a shaft power generation system and a diesel generator. The method solves the problem of unreasonable matching of parallel power of the existing shaft generator and the diesel generator via a frequency converter. Grid side voltage setting 0 has a deviation from grid side voltage Vgd computed by a first 3 to 2 conversion module 20, so that PWM (pulse-width modulation) pulse Vg<*> output by a first PWM generator 16 is adjusted; an output voltage phase of a shaft generator 8 is changed, and transient fluctuation of the diesel generator 4 can also result in adjustment of a voltage phase of a marine power grid 5 to various extents until a new equilibrium point is reached, so that reasonable and economic matching of the parallel generation power of the shaft power generation system is achieved; the consistency of output frequency of the shaft generator 8, output frequency of the diesel generator 4 and frequency of the marine power grid 5 is achieved by controlling and processing a pulse signal of a grid side inverter 11 and a pulse signal of a machine side inverter 10; and economic, reasonable and energy-saving power generation of the diesel generator is achieved.
Description
Technical field
The present invention relates to the electric power system on a kind of boats and ships, particularly a kind of generated output on backward boats and ships in parallel with the diesel engine generator on boats and ships for Shaft-Generator on boats and ships during load supplying is regulated matching process.
Background technology
Along with the development of marine energy-saving technology, axle generator is brought into use in boats and ships axis system, when being intended to reduce shipbuilding, power station equipment capacity, makes the construction cost of boats and ships, maintenance maintenance cost and operation cost all significantly reduce, and reaches the object promoting shipping enterprise's economic benefit.Meanwhile, those skilled in the art also begin one's study, and axle generator is in parallel with power station on ship to generate electricity, and is jointly powering by electric loading on boats and ships.Due to the load characteristic dead-soft of electrical network on ship, power-supply system after axle generator is in parallel with power station on ship is easily by load effect, and axle generator exports how much power boats and ships both not to have had host computer notify, again cannot power needed for sensing lead, when boats and ships electricity consumption load changing, Shaft-Generator power output is often caused not mated with diesel engine generator power output, thus cause generator against problems such as merit or electricity generation system unstabilitys, power Rational Matching when being therefore badly in need of solving that on axle generator and ship, power station powers to the load jointly.
Summary of the invention
The invention provides a kind of Shaft-Generator generated output control method in parallel with diesel engine generator, solve existing axle generator in parallel with diesel engine generator by frequency converter, when jointly powering to the load, the irrational technical barrier of power match.
The present invention solves above technical problem by the following technical programs:
A kind of Shaft-Generator generated output control method in parallel with diesel engine generator, axle generator is in parallel with diesel engine generator by frequency converter is mains supply peculiar to vessel afterwards, and ship provides electric flux by electric loading by electrical network peculiar to vessel; By realizing the phase place of the output voltage Vg* of the frequency converter be connected with axle generator and electrical network Phase synchronization peculiar to vessel to net side inverter pulse signal and the control treatment of pusher side inverter pulse signal, thus the power output of diesel engine generator and the power output of axle generator are matched, adjustment process is as follows:
Frequency converter comprises pusher side filter, pusher side inverter, net side inverter, net side filter, voltage on line side detector, current on line side detector, DC voltage detector, pusher side voltage detector and side currents detector;
According to the active load curve a of known diesel engine generator, arrange the active load curve b of frequency converter, concrete setting is the given power output Pg by axle generator
nwith given angular frequency g
ncorresponding N point is the active load curve b of a frequency converter identical with the slope of the active load curve a of diesel engine generator;
The given ω g of electrical network angular frequency
*the given θ g in voltage on line side phase angle is obtained through integrator
*, for the input of first 3->2 conversion, second 3->2 modular converter and first 2->3 modular converter;
The voltage on line side Vg123 that voltage on line side detector gathers and the given ω g of electrical network angular frequency
*the given θ g in voltage on line side phase angle is obtained through integrator
*voltage on line side Vgq is calculated, for the input of the first pi regulator by first 3->2 modular converter;
Voltage on line side given 0 and first 3->2 modular converter calculate voltage on line side Vgq and obtain current i gd through the first pi regulator control treatment
*, for the input of the second pi regulator;
Current on line side detector gathers current on line side ig123 and voltage phase angle θ g
*set-point calculates current i gd, for the input of the second pi regulator through second 3->2 modular converter;
Current i gd is obtained through the first pi regulator control treatment
*the current i gd be converted to second 3->2 modular converter obtains voltage on line side Vgd through the second pi regulator control treatment
*, for the input of first 2->3 modular converter;
Voltage on line side detector gathers voltage on line side Vg123 and the given ω g of electrical network angular frequency
*the given θ g in voltage on line side phase angle is obtained through integrator
*voltage on line side Vgd is calculated, for the input of the 4th pi regulator by first 3->2 modular converter;
According to the reactive load curve c of known diesel engine generator, arrange the reactive load curve d of frequency converter, concrete setting is the given reactive power Q g by axle generator
ngiven with given voltage on line side | the N1 point corresponding to VgN| is the reactive load curve d of a frequency converter identical with the slope of the reactive load curve c of diesel engine generator;
First 3->2 modular converter calculates voltage on line side Vgd and current on line side detector and gathers current on line side ig123 and calculate reactive power Q g by power computation module, is used for checking in voltage on line side amplitude according to reactive load curve given | Vg|
*, for the input of the 4th pi regulator;
Voltage on line side Vgd and voltage on line side amplitude given | Vg|
*current i gq is obtained through the 4th pi regulator control treatment
*; For the input of the 3rd pi regulator;
Current on line side detector gathers current on line side ig123 and voltage phase angle θ g
*set-point calculates through second 3->2 modular converter and waits until current i gq, for the input of the 3rd pi regulator;
4th pi regulator control treatment obtains current i gq
*calculate current i gq with second 3->2 modular converter and obtain voltage on line side Vgq through the 3rd pi regulator control treatment
*, for the input of first 2->3 modular converter;
The given θ g in voltage on line side phase angle is obtained through integrator
*, the second pi regulator control treatment obtains voltage on line side Vgd
*voltage on line side Vgq is obtained with the 3rd pi regulator control treatment
*the given Vg123 of voltage on line side is converted to through first 2->3 modular converter
*, the given Vg123 of voltage on line side
*pwm pulse Vg is exported by the first PWM generator
*, input for the pulse signal of net side inverter;
The pusher side voltage phase angle θ m that the pusher side voltage Vm123 that pusher side voltage detector gathers calculates through phase-locked loop module, is respectively used to the input of the 3rd 3->2 modular converter and second 2->3 modular converter;
The pusher side voltage phase angle θ m that the side currents im123 of side currents detector collection and phase-locked loop module calculate is converted to side currents imd, for the input of the 6th pi regulator through the 3rd 3->2 modular converter;
DC bus-bar voltage Vdc in the frequency converter that DC voltage detector gathers and the given Vdc of DC bus-bar voltage
*the given imd of side currents is obtained through the 5th pi regulator control treatment
*, for the input of the 6th pi regulator;
The given imd of side currents that 5th pi regulator control treatment obtains
*the pusher side voltage given Vmd that the side currents imd be converted to the 3rd 3->2 modular converter obtains through the 6th pi regulator control treatment
*, for the input of second 2->3 modular converter;
The pusher side voltage phase angle θ m that the side currents im123 of side currents detector collection and phase-locked loop module calculate is converted to side currents imq, for the input of the 7th pi regulator through the 3rd 3->2 modular converter;
The side currents imq that 3rd 3->2 modular converter is converted to and the given side currents imq of axle band system
*through the pusher side voltage given Vmq that the 7th pi regulator control treatment obtains
*, for the input of second 2->3 modular converter;
The pusher side voltage given Vmd that the pusher side voltage phase angle θ m that phase-locked loop calculates, the 6th pi regulator control treatment obtain
*pusher side voltage given Vmq is obtained with the 7th pi regulator control treatment
*through the pusher side voltage given Vm123 that second 2->3 modular converter is converted to
*, pusher side voltage given Vm123
*pwm pulse Vm is exported through PWM generator
*, input for pusher side inverter pulse signal;
By the control treatment to net side inverter pulse signal and pusher side inverter pulse signal, realize the phase place of the output voltage Vg* of the frequency converter that axle generator is connected and electrical network Phase synchronization peculiar to vessel, thus the power output of diesel engine generator and the power output of axle generator are matched.
When present invention achieves boats and ships electricity consumption load changing, the level and smooth rapidly steadily matching transition of the power output of diesel engine generator and the power output of axle generator, saves the energy consumption of diesel engine generator, improves the generating efficiency of diesel engine generator.
Accompanying drawing explanation
Fig. 1 is general structure schematic diagram of the present invention;
Fig. 2 is the structured flowchart of frequency converter of the present invention;
Fig. 3 is the active load curve of diesel engine generator 4 of the present invention and the active load curve of frequency converter 7;
Fig. 4 is the input and output schematic diagram of integration module of the present invention;
Fig. 5 is the input and output schematic diagram of first 3->2 modular converter 20 of the present invention;
Fig. 6 is the input and output schematic diagram of second 3->2 modular converter 21 of the present invention;
Fig. 7 is the input and output schematic diagram of the 3rd 3->2 modular converter 29 of the present invention;
Fig. 8 is the input and output schematic diagram of phase-locked loop module 28 of the present invention;
Fig. 9 is the input and output schematic diagram of power computation module 19 of the present invention;
Figure 10 is pusher side signal acquisition process flow chart of the present invention;
Figure 11 is net side of the present invention signal acquisition process flow chart.
Embodiment
Below in conjunction with accompanying drawing, the present invention is described in detail:
Shaft-Generator comprises on screw 1, gearbox 2, boats and ships driving main frame 3, electrical network peculiar to vessel 5, ship with electric loading 6, frequency converter 7 and axle generator 8, boats and ships drive main frame 3 to drive screw 1 by gearbox 2 thus propelling ship advances, there is provided electric flux to axle generator 8 simultaneously, axle generator 8 is all incorporated to electrical network 5 peculiar to vessel by frequency converter 7 and diesel engine generator 4, and ship provides electric flux by electric loading 6 by electrical network 5 peculiar to vessel.
Frequency converter 7 is the coupling critical components realizing Shaft-Generator generated output in parallel, frequency converter comprises pusher side filter 9, pusher side inverter 10, net side inverter 11, net side filter 12, voltage on line side detector 34, current on line side detector 33, DC voltage detector 32, pusher side voltage detector 30 and side currents detector 31, frequency converter 7 pairs of voltage on line side detectors 34 gather voltage on line side Vg123, current on line side detector 33 gathers current on line side ig123, DC voltage detector 32 gathers the DC bus-bar voltage Vdc in frequency converter, pusher side voltage detector 30 gathers pusher side voltage Vm123 and side currents detection 31 collection pusher side current i m123 carry out calculating control treatment, Shaft-Generator generated output matching process in parallel, active load curve setting is the key of power match, for diesel engine generator 4 and axle generator 8 body, there is the load characteristic of self, just load characteristic dead-soft, easily by load effect, therefore, frequency converter needs to arrange the active load curve of following, and realizes Shaft-Generator generated output coupling in parallel.
According to the active load curve a of known diesel engine generator 4, arrange frequency converter 7 active load curve b, concrete setting is the given power output Pg by axle generator 8
nwith given angular frequency g
ncorresponding N point is the active load curve b of a frequency converter 7 identical with the slope of the active load curve a of diesel engine generator 4;
Voltage on line side detector 34 gathers voltage on line side Vg123 and current on line side detector 33 and gathers current on line side ig123 and calculate active-power P g by power computation module 19, checks in electrical network angular frequency set-point ω g according to active load curve b
*, for the input of integrator 22;
Electrical network angular frequency g
*the given θ g in voltage on line side phase angle is obtained through integrator 22
*, for the input of first 3->2 modular converter, 20, second 3->2 modular converter 21 and first 2->3 modular converter 15;
Voltage on line side detector 34 gathers voltage on line side Vg123 and the given ω g of electrical network angular frequency
*the given θ g in voltage on line side phase angle is obtained through integrator 22
*voltage on line side Vgq is calculated, for the input of the first pi regulator 13 by first 3->2 modular converter 20;
Voltage on line side given 0 and first 3->2 modular converter 20 calculate voltage on line side Vgq and obtain current i gd through the first pi regulator 13 control treatment
*, for the input of the second pi regulator 14;
Current on line side detector 33 gathers current on line side ig123 and voltage phase angle θ g
*set-point calculates current i gd through second 3->2 modular converter 21, for the input of the second pi regulator 14;
Current i gd is obtained through the first pi regulator 13 control treatment
*the current i gd be converted to second 3->2 modular converter 21 obtains voltage on line side Vgd through the second pi regulator 14 control treatment
*, for the input of first 2->3 modular converter 15;
Voltage on line side detector 34 gathers voltage on line side Vg123 and the given ω g of electrical network angular frequency
*the given θ g in voltage on line side phase angle is obtained through integrator 22
*voltage on line side Vgd is calculated, for the input of the 4th pi regulator 18 by first 3->2 modular converter 20;
According to the reactive load curve c of known diesel engine generator 4, arrange frequency converter 7 reactive load curve d, concrete setting is the given reactive power Q g by axle generator 8
ngiven with given voltage on line side | the N1 point corresponding to VgN| is the reactive load curve d of a frequency converter 7 identical with the slope of the reactive load curve c of diesel engine generator 4;
First 3->2 modular converter 20 calculates voltage on line side Vgd and current on line side detector 33 and gathers current on line side ig123 and calculate reactive power Q g by power computation module 19, is used for checking in voltage on line side amplitude according to reactive load curve given | Vg|
*, for the input of the 4th pi regulator 18;
Voltage on line side Vgd and voltage on line side amplitude given | Vg|
*current i gq is obtained through the 4th pi regulator 18 control treatment
*; For the input of the 3rd pi regulator 17;
Current on line side detector 33 gathers current on line side ig123 and voltage phase angle θ g
*set-point calculates through second 3->2 modular converter 21 and waits until current i gq, for the input of the 3rd pi regulator 17;
4th pi regulator 18 control treatment obtains current i gq
*calculate current i gq with second 3->2 modular converter 21 and obtain voltage on line side Vgq through the 3rd pi regulator control treatment
*, for the input of first 2->3 modular converter 15;
The given θ g in voltage on line side phase angle is obtained through integrator 22
*, the second pi regulator 14 control treatment obtains voltage on line side Vgd
*voltage on line side Vgq is obtained with the 3rd pi regulator control treatment
*the given Vg123 of voltage on line side is converted to through first 2->3 modular converter 15
*, the given Vg123 of voltage on line side
*pwm pulse Vg is exported by the first PWM generator 16
*, input for net side inverter 11 pulse signal;
Pusher side voltage detector 30 gathers pusher side voltage Vm123 and calculates pusher side voltage phase angle θ m through phase-locked loop module 28, is respectively used to the input of the 3rd 3->2 modular converter 29 and second 2->3 modular converter 25;
The pusher side voltage phase angle θ m that side currents detection 31 collection pusher side current i m123 and phase-locked loop module 28 calculate is converted to side currents imd, for the input of the 6th pi regulator 24 through the 3rd 3->2 modular converter 29;
DC voltage detector 32 gathers DC bus-bar voltage Vdc in frequency converter and the given Vdc of DC bus-bar voltage
*the given imd of side currents is obtained through the 5th pi regulator 23 control treatment
*, for the input of the 6th pi regulator 24;
5th pi regulator 23 control treatment obtains the given imd of side currents
*be converted to side currents imd with the 3rd 3->2 modular converter 29 and obtain pusher side voltage given Vmd through the 6th pi regulator 24 control treatment
*, for the input of second 2->3 modular converter 25;
Side currents detector 32 gathers the pusher side voltage phase angle θ m that pusher side current i m123 and phase-locked loop module 28 calculate and is converted to side currents imq, for the input of the 7th pi regulator 27 through the 3rd 3->2 modular converter 29;
3rd 3->2 modular converter 29 is converted to side currents imq and the given side currents imq of axle band system
*pusher side voltage given Vmq is obtained through the 7th pi regulator 27 control treatment
*, for the input of second 2->3 modular converter 25;
Phase-locked loop 28 calculates pusher side voltage phase angle θ m, the 6th pi regulator 24 control treatment obtains pusher side voltage given Vmd
*pusher side voltage given Vmq is obtained with the 7th pi regulator 27 control treatment
*pusher side voltage given Vm123 is converted to through second 2->3 modular converter 25
*, pusher side voltage given Vm123
*pwm pulse Vm is exported through PWM generator 26
*, input for pusher side inverter 10 pulse signal;
By realizing phase place and electrical network peculiar to vessel 5 Phase synchronization of the output voltage Vg* of the frequency converter 7 that axle generator 8 is connected to net side inverter 11 pulse signal and the control treatment of pusher side inverter 10 pulse signal, thus the power output of diesel engine generator 4 and the power output of axle generator are matched.
Time on ship with electric loading 6 balance movement, axle generator 8 and diesel engine generator 4 power match reach balance, and frequency is ω
1, the power of axle generator 8 is P
c, diesel engine generator 4 power is P
a.
When ship loads suddenly by electric loading 6, due to the load characteristic dead-soft of diesel engine generator 4, the power output of diesel engine generator 4 rapidly increases to P
f, the frequency decrease of diesel engine generator 4 is to ω
3cause the frequency decrease of electrical network peculiar to vessel simultaneously, because diesel engine generator 4 and axle generator 8 are all incorporated to electrical network 5 peculiar to vessel, and the phase place of the output voltage of frequency converter 7 that is connected of axle generator 8 and Vg* can not at once and electrical network 5 Phase synchronization peculiar to vessel, so just make voltage on line side given 0 and first 3->2 modular converter 20 calculate voltage on line side Vgd and have deviation, thus export pwm pulse Vg through a series of calculating adjustment first PWM generator 16
*, meanwhile, the output pwm pulse Vg of the frequency converter 7 be connected along with axle generator 8
*adjustment, the output voltage phase place of the frequency converter 7 that axle generator 8 is connected is in change, and now because the transient wave of diesel engine generator 4 also can cause the voltage-phase of electrical network 5 peculiar to vessel all to have adjustment in various degree, until reach a new balance point, now diesel engine generator 4, axle generator 8 are ω with the frequency of electrical network 5 peculiar to vessel
2, the power of axle generator 8 is P
d, diesel engine generator 4 power is P
b, thus realize Shaft-Generator generated output in parallel rationally economic coupling.
In like manner, time on ship with electric loading 6 prominent unloading, axle generator 8, by above-mentioned frequency converter adjustment process, finally makes the Frequency Synchronization of diesel engine generator 4, axle generator 8 and electrical network 5 peculiar to vessel, thus realizes Shaft-Generator generated output in parallel rationally economic coupling.
Reach consistent by frequency net side inverter 11 pulse signal and the control treatment of pusher side inverter 10 pulse signal being realized to the output frequency of axle generator 8, the output frequency of diesel engine generator 4 and electrical network peculiar to vessel 5, thus the power output of diesel engine generator 4 and the power output of axle generator are matched, the generating economical rationality achieving diesel engine generator is energy-conservation.
The present invention is directed to various dissimilar axle generator 8, meritorious load curve is set.
Claims (1)
1. a Shaft-Generator generated output control method in parallel with diesel engine generator, be that electrical network peculiar to vessel (5) is powered after axle generator (8) is in parallel with diesel engine generator (4) by frequency converter (7), ship provides electric flux by electric loading (6) by electrical network peculiar to vessel (5); By the phase place of the output voltage Vg* of frequency converter (7) that realizes being connected with axle generator (8) to net side inverter (11) pulse signal and the control treatment of pusher side inverter (10) pulse signal and electrical network peculiar to vessel (5) Phase synchronization, thus the power output of diesel engine generator (4) and the power output of axle generator are matched, it is characterized in that:
Frequency converter (7) comprises pusher side filter (9), pusher side inverter (10), net side inverter (11), net side filter (12), voltage on line side detector (34), current on line side detector (33), DC voltage detector (32), pusher side voltage detector (30) and side currents detector (31);
According to the active load curve a of known diesel engine generator (4), arrange the active load curve b of frequency converter (7), concrete setting is the given power output Pg by axle generator (8)
nwith given angular frequency g
ncorresponding N point is the active load curve b of a frequency converter (7) identical with the slope of the active load curve a of diesel engine generator (4);
According to the reactive load curve c of known diesel engine generator (4), arrange the reactive load curve d of frequency converter (7), concrete setting is the rated reactive power Qg by axle generator (8)
ngiven with specified voltage on line side | the N1 point corresponding to VgN| is the reactive load curve d of a frequency converter (7) identical with the slope of the reactive load curve c of diesel engine generator (4);
The given ω g of electrical network angular frequency
*the given θ g in voltage on line side phase angle is obtained through integrator (22)
*, for the input of first 3->2 conversion (20), second 3->2 modular converter (21) and first 2->3 modular converter (15);
The voltage on line side Vg123 that voltage on line side detector (34) gathers and the given ω g of electrical network angular frequency
*the given θ g in voltage on line side phase angle is obtained through integrator (22)
*voltage on line side Vgq is calculated, for the input of the first pi regulator (13) by first 3->2 modular converter (20);
Voltage on line side given 0 and first 3->2 modular converter (20) calculate voltage on line side Vgq and obtain current i gd through the first pi regulator (13) control treatment
*, for the input of the second pi regulator (14);
Current on line side detector (33) gathers current on line side ig123 and voltage phase angle θ g
*set-point calculates current i gd, for the input of the second pi regulator (14) through second 3->2 modular converter (21);
Current i gd is obtained through the first pi regulator (13) control treatment
*the current i gd be converted to second 3->2 modular converter (21) obtains voltage on line side Vgd through the second pi regulator (14) control treatment
*, for the input of first 2->3 modular converter (15);
Voltage on line side detector (34) gathers voltage on line side Vg123 and the given ω g of electrical network angular frequency
*the given θ g in voltage on line side phase angle is obtained through integrator (22)
*voltage on line side Vgd is calculated, for the input of the 4th pi regulator (18) by first 3->2 modular converter (20);
According to the reactive load curve c of known diesel engine generator (4), arrange the reactive load curve d of frequency converter (7), concrete setting is the given reactive power Q g by axle generator (8)
ngiven with given voltage on line side | the N1 point corresponding to VgN| is the reactive load curve d of a frequency converter (7) identical with the slope of the reactive load curve c of diesel engine generator (4);
First 3->2 modular converter (20) calculates voltage on line side Vgd and current on line side detector (33) and gathers current on line side ig123 and calculate reactive power Q g by power computation module (19), is used for checking in voltage on line side amplitude according to reactive load curve given | Vg|
*, for the input of the 4th pi regulator (18);
Voltage on line side Vgd and voltage on line side amplitude given | Vg|
*current i gq is obtained through the 4th pi regulator (18) control treatment
*; For the input of the 3rd pi regulator (17);
Current on line side detector (33) gathers current on line side ig123 and voltage phase angle θ g
*set-point waits until current i gq, for the input of the 3rd pi regulator (17) through the calculating of second 3->2 modular converter (21);
4th pi regulator (18) control treatment obtains current i gq
*calculate current i gq with second 3->2 modular converter (21) and obtain voltage on line side Vgq through the 3rd pi regulator (17) control treatment
*, for the input of first 2->3 modular converter (15);
The given θ g in voltage on line side phase angle is obtained through integrator (22)
*, the second pi regulator (14) control treatment obtains voltage on line side Vgd
*voltage on line side Vgq is obtained with the 3rd pi regulator (17) control treatment
*the given Vg123 of voltage on line side is converted to through first 2->3 modular converter (15)
*, the given Vg123 of voltage on line side
*pwm pulse Vg is exported by the first PWM generator (16)
*, input for the pulse signal of net side inverter (11);
The pusher side voltage phase angle θ m that the pusher side voltage Vm123 that pusher side voltage detector (30) gathers calculates through phase-locked loop module (28), is respectively used to the input of the 3rd 3->2 modular converter (29) and second 2->3 modular converter (25);
The pusher side voltage phase angle θ m that the side currents im123 that side currents detector (31) gathers and phase-locked loop module (28) calculate is converted to side currents imd through the 3rd 3->2 modular converter (29), for the input of the 6th pi regulator (24);
DC bus-bar voltage Vdc in the frequency converter that DC voltage detector (32) gathers and the given Vdc of DC bus-bar voltage
*the given imd of side currents is obtained through the 5th pi regulator (23) control treatment
*, for the input of the 6th pi regulator (24);
The given imd of side currents that 5th pi regulator (23) control treatment obtains
*the pusher side voltage given Vmd that the side currents imd be converted to the 3rd 3->2 modular converter (29) obtains through the 6th pi regulator (24) control treatment
*, for the input of second 2->3 modular converter (25);
The pusher side voltage phase angle θ m that the side currents im123 that side currents detector (32) gathers and phase-locked loop module (28) calculate is converted to side currents imq through the 3rd 3->2 modular converter (29), for the input of the 7th pi regulator (27);
The side currents imq that 3rd 3->2 modular converter (29) is converted to and the given side currents imq of axle band system
*through the pusher side voltage given Vmq that the 7th pi regulator (27) control treatment obtains
*, for the input of second 2->3 modular converter (25);
The pusher side voltage given Vmd that the pusher side voltage phase angle θ m that phase-locked loop module (28) calculates, the 6th pi regulator (24) control treatment obtain
*pusher side voltage given Vmq is obtained with the 7th pi regulator (27) control treatment
*through the pusher side voltage given Vm123 that second 2->3 modular converter (25) is converted to
*, pusher side voltage given Vm123
*pwm pulse Vm is exported through PWM generator (26)
*, input for pusher side inverter (10) pulse signal;
By the control treatment to net side inverter (11) pulse signal and pusher side inverter (10) pulse signal, realize phase place and electrical network peculiar to vessel (5) Phase synchronization of the output voltage Vg* of the frequency converter (7) that axle generator (8) is connected, thus the power output of diesel engine generator (4) and the power output of axle generator are matched.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104821650A (en) * | 2015-05-20 | 2015-08-05 | 集美大学 | Ship photovoltaic inverter voltage vector orientation current servo control method |
| CN105416549A (en) * | 2015-12-01 | 2016-03-23 | 北京赛思亿电气科技有限公司 | Diesel-electricity hybrid power system based on permanent magnet motor |
| CN111415008A (en) * | 2020-03-17 | 2020-07-14 | 上海海事大学 | Ship flow prediction method based on VMD-FOA-GRNN |
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| CN111415008B (en) * | 2020-03-17 | 2023-03-24 | 上海海事大学 | Ship flow prediction method based on VMD-FOA-GRNN |
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