CN109742907A - A kind of DC start electricity generation system and control method based on Multiple coil electric excitation biconvex electrode electric machine - Google Patents
A kind of DC start electricity generation system and control method based on Multiple coil electric excitation biconvex electrode electric machine Download PDFInfo
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- CN109742907A CN109742907A CN201811391834.4A CN201811391834A CN109742907A CN 109742907 A CN109742907 A CN 109742907A CN 201811391834 A CN201811391834 A CN 201811391834A CN 109742907 A CN109742907 A CN 109742907A
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Abstract
The embodiment of the invention discloses a kind of DC start electricity generation systems and control method based on Multiple coil electric excitation biconvex electrode electric machine, it is related to technical field of motors, a kind of starting-generating system is provided, it include: that Multiple coil electric excitation biconvex electrode electric machine has three sets of armature winding and set of excitation winding, the first, third armature winding is star-like connection, and the second armature winding is triangle connection；First, second armature winding of Multiple coil electric excitation biconvex electrode electric machine is in parallel with after bridge-type uncontrollable rectifier circuit connection respectively, as starting-generating system power generation output end；The first armature winding and three-phase full-bridge inverter of Multiple coil electric excitation biconvex electrode electric machine are connected to starting-generating system start input terminal；The third armature winding and bridge-type uncontrollable rectifier circuit of Multiple coil electric excitation biconvex electrode electric machine, Excitation Power Circuit are linked in sequence, excitation source when as generator operation.The present invention is used for the brushless DC start electricity generation system and control of low output voltage pulsation.
Description
Technical field
The present invention relates to technical field of motors more particularly to a kind of direct current based on Multiple coil electric excitation biconvex electrode electric machine to rise
Dynamic electricity generation system and control method.
Background technique
Reversible operation principle based on motor can work in electronic and two kinds of power generation on most of electric machine theory
Mode.The motor especially installed in oil burning power system, before the engine stabilizer work of fuel power, control motor electricity
Dynamic operation, oil spout is lighted a fire after driving engine to rotate to certain revolving speed.After engine stabilizer work, engine drives electricity in turn
Machine makes its power supply for electrical equipment as generator to carriers such as automobile, aircrafts, to realize dual-use.
And with mostly electricity/electric aircraft technology development, power-supply system requires electric power generation power to be significantly increased, and rises simultaneously
Dynamic power is but reduced as the progress of engine technology is opposite, and research direction in the industry is to utilize starting-generating integration skill at present
Art will be started and be blended with generating function, in order to reduce the overall volume and weight of DC start and electricity generation system.
Electric excitation biconvex electrode electric machine structure is simple, without winding and motor is not necessarily to permanent magnet excitation on rotor, motor cost is low,
High reliablity is suitble to high temperature and high speed operation.But current electric excitation biconvex electrode electric machine leads in the application of starter-generator
Two sets of star winding parallel connection power generation outputs are realized frequently with the electric excitation biconvex electrode electric machine structure of two-part, and are needed additional
There is permanent magnet excitation machine, it is more complex so as to cause electric machine structure, it is unfavorable for producing and safeguards.
Summary of the invention
The embodiment of the present invention provide a kind of DC start electricity generation system based on Multiple coil electric excitation biconvex electrode electric machine and
Control method is capable of providing a kind of starting-generating system that the simple and reliable property of structure is high.
In order to achieve the above objectives, the embodiment of the present invention adopts the following technical scheme that
Mainly provide a kind of DC start electricity generation system based on Multiple coil electric excitation biconvex electrode electric machine, the system packet
It includes: Multiple coil electric excitation biconvex electrode electric machine and starting-generating controller；
The stator and rotor of the Multiple coil electric excitation biconvex electrode electric machine are salient-pole structure, are equipped with three on the stator
Armature winding and set of excitation winding are covered, three sets of armature winding includes first to third armature winding, wherein the first armature
Winding and third armature winding are star-like connection, and the second armature winding is that triangle connects, the first armature winding, the second armature around
Group and third armature winding share the excitation winding；
The starting-generating controller include: three-phase full-bridge inverter, the first bridge-type uncontrollable rectifier circuit, the second bridge-type not
Control rectifying circuit, third bridge-type uncontrollable rectifier circuit, Excitation Power Circuit, starting contactor, A.C. contactor, excitation contact
Device, field application relay, power generation contactor, first capacitor, the second capacitor, position sensor, power generation output end voltage sensor, hair
Electricity output end current sensor, three-phase full-bridge inverter output current sensor, excitation winding current sensor and starting/power generation
Control unit；
The starting contactor, the A.C. contactor, the excitation contactor, the field application relay and the power generation
Contactor is controlled by the starting/generation control unit；
The position sensor, power generation output end voltage sensor, power generation output end current sensor, three phase full bridge inversion
Device exports current sensor and excitation winding current sensor and respective detection signal is back to starting/generation control unit.
Specifically, the input terminal of the output end of first armature winding and the first bridge-type uncontrollable rectifier circuit connects
It connects；
The output end of second armature winding is connect with the input terminal of the second bridge-type uncontrollable rectifier circuit；
The circuit output end of the output end of the first bridge-type uncontrollable rectifier circuit and the second bridge-type uncontrollable rectifier is simultaneously
Connection；
The anode of parallel output is connect with the anode of the first capacitor, is exported as generating electricity for the starting-generating system
The anode at end；
The negative terminal of parallel output is connect with the first contact of the first capacitor negative terminal, the power generation contactor, the hair
Second contact of electric contactor is the negative terminal of starting-generating system power generation output end；
The power generation output end voltage sensor generates electricity defeated for detecting the starting-generating system power generation output end voltage
Outlet current sensor is for detecting the starting-generating system power generation output end current.
Specifically, first armature winding is connect with the first contact of the A.C. contactor；
Second contact of the A.C. contactor is connect with the output end of the three-phase full-bridge inverter；
The input anode of the three-phase full-bridge inverter is connect with the anode of the second source, the three phase full bridge inversion
The input negative terminal of device is connect with the first contact of the starting contactor；
Second contact of starting contactor is connect with the second source negative terminal, to constitute the starting-generating system
Starting circuit；
The three-phase full-bridge inverter output current sensor is for detecting three in the starting-generating system start circuit
The two-phase of phase full-bridge inverter exports electric current.
Specifically, the output end of the third armature winding is connect with the first contact of the field application relay；
Second contact of the field application relay is connect with the third bridge-type uncontrollable rectifier circuit input end；
The output end of the third bridge-type uncontrollable rectifier circuit connect after second capacitor with the Excitation Power Circuit
Input terminal connection；
The output end of the Excitation Power Circuit is connect with the excitation winding,
The excitation winding is connect by the excitation contactor with the third power supply, to constitute the starting-generating
The excitation circuit of system；
The excitation winding current sensor is used to detect the exciting current in the starting-generating system excitation circuit.
Specifically, first armature winding and the second armature winding the number of turns ratio are
Starting/generation control unit Multiple coil electrical excitation described in the implementation procedure of the Generation Control program is double
30 degree of electrical angle phase differences are maintained between the first armature winding of motor of salient pole and the second armature winding.
The Excitation Power Circuit is asymmetry half-bridge circuit.
A kind of control method of DC start power generation based on Multiple coil electric excitation biconvex electrode electric machine, the method are also provided
For a kind of DC start electricity generation system based on Multiple coil electric excitation biconvex electrode electric machine, the system comprises: Multiple coil electricity is encouraged
Magnetic double salient-pole electric machine and starting-generating controller；
The described method includes:
The system, which receives, enters self-check program after start signal, and after the completion of self-check program, closure excitation contactor is risen
Dynamic contactor and A.C. contactor；
Starting/generation control unit runs starting control program, and electric motor starting simultaneously drives engine to rotate, by default
Starting time after detection feedback is carried out to the revolving speed of the motor, judge whether the motor reaches preset disengagement revolving speed；
If the motor is not up to the disengagement revolving speed, starting failure is determined, and disconnect the excitation contactor, described
Starting contactor and the A.C. contactor, are simultaneously stopped the progress of starting sequence；
If the motor reaches the disengagement revolving speed, and does not receive starting and complete signal, then starting failure is determined, and break
The excitation contactor, the starting contactor and the A.C. contactor are opened, the starting control program is simultaneously stopped；
If the motor reaches the disengagement revolving speed, and receives the starting and complete signal, then determine to start successfully, and
Disconnect the excitation contactor, the starting contactor and the A.C. contactor.
Specifically, further include:
After detecting that motor speed reaches disengagement revolving speed, and receives the starting and complete signal, the starting/power generation
Control unit judgement starts successfully and disconnects the excitation contactor, the starting contactor and the A.C. contactor, later
It continues to test whether motor speed reaches power generation revolving speed, if reaching the power generation revolving speed, loads signal etc. to be received.
After signal can be loaded described in receiving, whether power generation output end voltage reaches default remanent magnetism voltage at this time for detection, if
Reach the default remanent magnetism voltage, then switches to Generation Control program；
If the not up to described default remanent magnetism voltage, is closed the excitation contactor, is detected again later；Until reaching
To after the default remanent magnetism voltage, disconnects the field application relay and switch to the Generation Control program.
Specifically, further include:
Starting/the generation control unit is in the implementation procedure of the starting control program, to three-phase full-bridge inverter
The phase current and rotor-position of output are detected, and will test three-phase full-bridge inverter output phase current signal and turn
Sub- position signal inputs the starting/generation control unit.
Specifically, further include:
Starting/the generation control unit is in the implementation procedure of the Generation Control program, to encouraging in excitation winding
Magnetoelectricity stream, power generation output end voltage and power generation output end current detected, and will test exciting current signal, power generation it is defeated
Terminal voltage signal and power generation output end current signal input the starting/generation control unit out.
Wherein, the starting/generation control unit is in the implementation procedure of the Generation Control program by the Multiple coil
The third armature winding of electric excitation biconvex electrode electric machine provides exciting power.
Starting/the generation control unit is encouraged in the implementation procedure of the starting control program by external power supply offer
Magnetic power.
Mentioned in the present embodiment based on the DC start electricity generation system of Multiple coil electric excitation biconvex electrode electric machine and control
Method is reduced by the design to excitation circuit in the armature winding and starting-generating controller in electric excitation biconvex electrode electric machine
Generate electricity output voltage pulsation, and external excitation source when cancelling long-term generator operation, provides a kind of simple and reliable property of structure
High starting-generating system.The excitation source, which refers to, provides the machine winding or external power supply of power for excitation winding.
Detailed description of the invention
It to describe the technical solutions in the embodiments of the present invention more clearly, below will be to needed in the embodiment
Attached drawing is briefly described, it should be apparent that, drawings in the following description are only some embodiments of the invention, for ability
For the those of ordinary skill of domain, without creative efforts, it can also be obtained according to these attached drawings other attached
Figure.
Fig. 1 is the brushless DC start electricity generation system and control method block diagram of low output voltage pulsation in the present invention.
Fig. 2 is Multiple coil electric excitation biconvex electrode electric machine structural schematic diagram in the present invention.
Fig. 3 is that the brushless DC start electricity generation system of low output voltage pulsation and the bridge-type of control method are not controlled in the present invention
1 structure chart of rectification circuit.
Fig. 4 is that the brushless DC start electricity generation system of low output voltage pulsation and the bridge-type of control method are not controlled in the present invention
2 structure chart of rectification circuit.
Fig. 5 is that the brushless DC start electricity generation system of low output voltage pulsation and the bridge-type of control method are not controlled in the present invention
3 structure chart of rectification circuit.
Fig. 6 is the three phase full bridge of the brushless DC start electricity generation system and control method of low output voltage pulsation in the present invention
Inverter structure figure.
Fig. 7 is the exciting power of the brushless DC start electricity generation system and control method of low output voltage pulsation in the present invention
Circuit structure diagram.
Fig. 8 is the brushless DC start electricity generation system and control method starting control frame of low output voltage pulsation in the present invention
Figure.
Fig. 9 is the brushless DC start electricity generation system and control method Generation Control frame of low output voltage pulsation in the present invention
Figure.
Figure 10 is the starting hair of the brushless DC start electricity generation system and control method of low output voltage pulsation in the present invention
Electric control method flow chart.
Figure 11 be the present invention in low output voltage pulsation brushless DC start electricity generation system generate electricity output voltage waveforms with
Traditional electric excitation biconvex electrode electric machine output voltage waveforms comparison diagram.
Specific embodiment
Technical solution in order to enable those skilled in the art to better understand the present invention, with reference to the accompanying drawing and specific embodiment party
Present invention is further described in detail for formula.Embodiments of the present invention are described in more detail below, the embodiment is shown
Example is shown in the accompanying drawings, and in which the same or similar labels are throughly indicated same or similar element or has identical or class
Like the element of function.It is exemplary below with reference to the embodiment of attached drawing description, for explaining only the invention, and cannot
It is construed to limitation of the present invention.Those skilled in the art of the present technique are appreciated that unless expressly stated, odd number shape used herein
Formula " one ", "one", " described " and "the" may also comprise plural form.It is to be further understood that specification of the invention
Used in wording " comprising " refer to that there are the feature, integer, step, operation, element and/or component, but it is not excluded that
In the presence of or add other one or more features, integer, step, operation, element, component and/or their group.It should be understood that
When we say that an element is " connected " or " coupled " to another element, it can be directly connected or coupled to other elements, or
There may also be intermediary elements.In addition, " connection " used herein or " coupling " may include being wirelessly connected or coupling.Here make
Wording "and/or" includes one or more associated any cells for listing item and all combinations.The art
Technical staff is appreciated that unless otherwise defined all terms (including technical terms and scientific terms) used herein have
Meaning identical with the general understanding of the those of ordinary skill in fields of the present invention.It should also be understood that such as general
Those terms, which should be understood that, defined in dictionary has a meaning that is consistent with the meaning in the context of the prior art, and
Unless defined as here, it will not be explained in an idealized or overly formal meaning.
The embodiment of the present invention provides a kind of DC start electricity generation system based on Multiple coil electric excitation biconvex electrode electric machine,
The system comprises: Multiple coil electric excitation biconvex electrode electric machine and starting-generating controller.
The stator and rotor of the Multiple coil electric excitation biconvex electrode electric machine are salient-pole structure, are equipped with three on the stator
Armature winding and excitation winding are covered, three sets of armature winding includes first to third armature winding, wherein the first armature winding
With third armature winding be star-like connection, the second armature winding be triangle connect, the first armature winding, the second armature winding and
Third armature winding shares the excitation winding, wherein shares excitation winding, it can be understood as by set of excitation winding in electricity
The magnetic field generated in machine makes three sets of armature winding that can induce potential, does not have circuit company between armature winding and excitation winding
Relationship is connect, magnetic field coupling is only passed through.
The starting-generating controller include: three-phase full-bridge inverter, the first bridge-type uncontrollable rectifier circuit, the second bridge-type not
Control rectifying circuit, third bridge-type uncontrollable rectifier circuit, Excitation Power Circuit, starting contactor, A.C. contactor, excitation contact
Device, field application relay, power generation contactor, first capacitor, the second capacitor and starting/generation control unit.
The output end of first armature winding is connect with the input terminal of the first bridge-type uncontrollable rectifier circuit,
The output end of second armature winding is connect with the input terminal of the second bridge-type uncontrollable rectifier circuit,
The starting contactor, the A.C. contactor, the excitation contactor, the field application relay and the power generation
Contactor is separately connected the starting/generation control unit, and is all controlled by the starting/generation control unit.Specifically, by
The detailed process for the starting control that the starting/generation control unit is realized, generally comprises: the Multiple coil electrical excitation detected
Double salient-pole electric machine rotor-position signal calculates link by revolving speed and obtains motor speed signal, by motor speed signal and given turn
Fast signal obtains phase current Setting signal by speed regulator more afterwards, the output phase of the three-phase full-bridge inverter detected
Current signal obtains phase current conditioned signal, phase current Setting signal and phase current conditioned signal ratio by phase current conditioning link
Phase current chopping control signal, phase current chopping control signal and rotor seat signal warp are obtained by phase current regulator more afterwards
It crosses phase change logic controlling unit and obtains the pulse-width signal of three-phase full-bridge inverter switching tube chop control, control three phase full bridge
The output electric current of inverter realizes the start-up function to engine to control motor speed.
Specifically, the output end of the first bridge-type uncontrollable rectifier circuit and the circuit output end of the second bridge-type uncontrollable rectifier
Parallel connection, and the anode of parallel output is connect with the anode of the first capacitor, the negative terminal of parallel output and the first capacitor are negative
It holds and is connected with the first contact of the power generation contactor.The negative terminal and power generation contactor K of the capacitor C1 of example as shown in figure 14Contact 1
Circuit connection.
The first bridge-type uncontrollable rectifier circuit and the second bridge-type uncontrollable rectifier circuit in parallel, and parallel output is just
End connects the anode of the first capacitor, and as the anode for starting-generating system power generation output, the power generation contact
Second contact of device is the negative terminal of starting-generating system power generation output.
Specifically, first armature winding is connect with the first contact of the A.C. contactor；
Second contact of the A.C. contactor is connect with the output end of the three-phase full-bridge inverter；
The input anode of the three-phase full-bridge inverter is connect with the anode of the second source, the three phase full bridge inversion
The input negative terminal of device is connect with the first contact of the starting contactor；
Second contact of starting contactor is connect with the second source negative terminal, to constitute the starting-generating system
Starting circuit.
By the optimization design to electric excitation biconvex electrode electric machine winding construction in the present embodiment, using star-like armature winding and
The method of parallel operation after the rectification of triangle armature winding effectively reduces power generation output voltage pulsation.The method does not change motor
Structure, the complexity for not increasing starting-generating control method and the reliability for not influencing starting-generating system, method is simple and effective,
It is easy to accomplish.
In the present embodiment, the output end of the third armature winding is connect with the first contact of the field application relay；
Second contact of the field application relay is connect with the third bridge-type uncontrollable rectifier circuit input end；
The output end of the third bridge-type uncontrollable rectifier circuit connect after second capacitor with the Excitation Power Circuit
Input terminal connection；
The output end of the Excitation Power Circuit is connect with the excitation winding,
The excitation winding is connect by the excitation contactor with the third power supply, to constitute the starting-generating
The excitation circuit of system.
By by Multiple coil electric excitation biconvex electrode electric machine stator in the present embodiment, except the first armature of above-mentioned star-like connection
The second armature winding that winding is connected with triangle, the also a set of star-like connection third armature winding of coiling are entering Generation Control
Power is provided for excitation winding by third armature winding after program.Cancel external power supply in long-term power generation process, realizes motor
Self-excitation.
In the preferred embodiment of the present embodiment, first armature winding and the second armature winding the number of turns ratio areThe Excitation Power Circuit can specifically use asymmetry half-bridge circuit.
For example: as shown in Figure 1, it is the low output voltage pulsation in a kind of possible implementation of the present embodiment
Brushless DC start electricity generation system and control method block diagram, wherein specifically include that Multiple coil electric excitation biconvex electrode electric machine and rise
Dynamic electricity generating controller.There are three sets of armature winding and set of excitation winding W on the Multiple coil electric excitation biconvex electrode electric machine statorf,
Wherein the first armature winding Wa1, third armature winding Wa3For star-like connection, the second armature winding Wa2It is connected for triangle, and three
It covers armature winding and shares the excitation winding W on statorf。
The starting-generating controller includes bridge-type three-phase full-bridge inverter, excitation contactor K1, starting contactor K2, encourage
Magnetic relay K3, power generation contactor K4, A.C. contactor K5, position sensor, power generation output end voltage sensor HUdc, power generation it is defeated
Outlet current sensor HIdc, three-phase full-bridge inverter export current sensor HaAnd Hc, excitation winding current sensor Hif, bridge
Formula uncontrollable rectifier circuit 1, bridge-type uncontrollable rectifier circuit 2, bridge-type uncontrollable rectifier circuit 3, Excitation Power Circuit, capacitor C1, capacitor
C2, starting/generation control unit；Starting/generation control unit is powered by power supply 1；Wherein the first armature winding Wa1Output end with
The connection of 1 input terminal of bridge-type uncontrollable rectifier circuit, the second armature winding Wa2Output end and 2 input terminal of bridge-type uncontrollable rectifier circuit connect
It connects, 1 output end of bridge-type uncontrollable rectifier circuit is in parallel with bridge-type uncontrollable rectifier 2 output ends of circuit, parallel output anode and capacitor C1
Anode connection, parallel output negative terminal, capacitor C1Negative terminal and power generation contactor K4The connection of 1st contact, the bridge-type uncontrollable rectifier circuit
1 and 2 parallel output anode of bridge-type uncontrollable rectifier circuit, that is, capacitor C1Anode is starting-generating system power generation output plus terminal, hair
The 2nd contact of electric contactor is starting-generating system power generation output negative terminal.
The first armature winding of Multiple coil electric excitation biconvex electrode electric machine Wa1Respectively with A.C. contactor K5The connection of 1st contact, is handed over
Flow contactor K52nd contact is connect with three-phase full-bridge inverter output end respectively, and three-phase full-bridge inverter inputs anode and power supply 2
Anode connection, three-phase full-bridge inverter input negative terminal and starting contactor K2The connection of 1st contact, starting contactor K22nd contact with
The connection of 2 negative terminal of power supply, constitutes the starting circuit of the starting-generating system.
Multiple coil electric excitation biconvex electrode electric machine third armature winding Wa3Output end and field application relay K3The connection of 1st contact,
Field application relay K32nd contact is connect with 3 input terminal of bridge-type uncontrollable rectifier circuit, the output termination electricity of bridge-type uncontrollable rectifier circuit 3
Hold C2It is connect afterwards with Excitation Power Circuit input terminal, exciting power output end and Multiple coil electric excitation biconvex electrode electric machine excitation winding
WfConnection, excitation winding WfPass through excitation contactor K simultaneously1It is connect with power supply 3, constitutes the starting-generating system excitation circuit.
Fig. 2 is Multiple coil electric excitation biconvex electrode electric machine structural schematic diagram of the present invention, and electric excitation biconvex electrode electric machine therein is fixed
Son 1, rotor 2 are salient-pole structure, have four sets of windings on the stator 1, are excitation winding 3, the first armature winding 4, second respectively
Armature winding 5 and third armature winding 6, stator slot are embedded with slot wedge 7.
Specifically, as shown in Figure 3, it is the brushless DC start electricity generation system and control method of low output voltage pulsation
1 structure chart of bridge-type uncontrollable rectifier circuit, including diode D11, diode D12, diode D13, diode D14, diode D15
With diode D16 totally six diodes.
As shown in Figure 4, the bridge-type of the brushless DC start electricity generation system and control method pulsed for low output voltage is not
2 structure chart of control rectifying circuit, including diode D21, diode D22, diode D23, diode D24, diode D25 and two poles
Pipe D26 totally six diodes.
As shown in Figure 5, the bridge-type of the brushless DC start electricity generation system and control method pulsed for low output voltage is not
3 structure chart of control rectifying circuit, including diode D31, diode D32, diode D33, diode D34, diode D35 and two poles
Pipe D36 totally six diodes.
It is as shown in FIG. 6, it is complete for the brushless DC start electricity generation system of low output voltage pulsation and the three-phase of control method
Bridge inverter structure chart, including power tube T1, power tube T2, power tube T3, power tube T4, power tube T5 and power tube T6 totally six
A power tube, diode D1, diode D2, diode D3, diode D4, diode D5 and diode D6 totally six diodes and
Capacitor C3.
As shown in Figure 7, for the brushless DC start electricity generation system of low output voltage pulsation and the excitation function of control method
Rate circuit structure diagram, including power tube T7 and power tube T8 the two power tubes, diode D7 and the two two poles diode D8
Pipe.
In the published scheme in this field, a kind of double-salient-pole high voltage direct current starting-generating system and controlling party are described
Method, the starter-generator in invention includes coaxially connected two-part electric excitation biconvex electrode electric machine and permanent magnet excitation machine, two-part
Electric excitation biconvex electrode electric machine armature winding is in parallel with after bridge-type uncontrollable rectifier circuit connection respectively, the hair as starting-generating system
Electricity output end, permanent magnet excitation machine provide exciting current for excitation winding.Double-salient-pole high voltage direct current starting-generating system in invention
When generator operation, two electric excitation biconvex electrode electric machines coaxially run power generation in parallel after rectifying respectively is encouraged by adjusting two electricity
Magnetic double salient-pole electric machine rotor relative angle can reduce output voltage pulsation.(CN10635716A) in this scheme, starting-generating
Machine realizes two sets of star winding parallel connection power generation outputs using the electric excitation biconvex electrode electric machine structure of two-part, and is attached with permanent magnetism and encourages
Magnetomechanical, electric machine structure are more complex.Technical problem to be solved in the present invention are as follows: a kind of the brushless of low output voltage pulsation is provided
DC start electricity generation system and control method and control method, by electric excitation biconvex electrode electric machine armature winding and starting
The design of excitation circuit in electricity generating controller reduces power generation output voltage pulsation, and outside when cancelling long-term generator operation
Excitation source provides a kind of starting-generating system that the simple and reliable property of structure is high.Hair is started in existing double salient-pole electric machine at present
In electric scheme, although also there is colleague to attempt the simpler structure type of winding construction, usually all there is power generation output voltage
It pulses larger problem, practicability is not good enough.It is further by the carry out to double salient-pole electric machine ontology winding construction in the present embodiment
Optimization, realize reduce power generation output voltage pulsation, it is this modification it is small to entire starting-generating systematic influence, do not increase motor
With the complexity of controller, while also reduce power generation output voltage pulsation.And specifically provide a kind of pulsation of low output voltage
Brushless DC start electricity generation system and control method, system include Multiple coil electric excitation biconvex electrode electric machine and starting-generating control
Device.
Multiple coil electric excitation biconvex electrode electric machine has three sets of armature winding and set of excitation winding, wherein first, third armature
Winding is star-like connection, and the second armature winding is triangle connection；First, second armature winding is electric with bridge-type uncontrollable rectifier respectively
It is in parallel after the connection of road, as starting-generating system power generation output end；First armature winding of Multiple coil electric excitation biconvex electrode electric machine
Starting-generating system start input terminal is connected to three-phase full-bridge inverter；The third electricity of Multiple coil electric excitation biconvex electrode electric machine
Pivot winding and bridge-type uncontrollable rectifier circuit, Excitation Power Circuit are linked in sequence, excitation source when as generator operation.
The scheme of the present embodiment is extremely simple when starting-generating controls, and by two sets phase differences is 30 degree of electric angles when power generation
The armature winding parallel output of degree reduces system output voltage pulsation, and is not necessarily to external excitation when long-term generator operation.
The embodiment of the present invention also provides a kind of control of DC start power generation based on Multiple coil electric excitation biconvex electrode electric machine
Method, the method are used for a kind of DC start electricity generation system based on Multiple coil electric excitation biconvex electrode electric machine, the system packet
It includes: Multiple coil electric excitation biconvex electrode electric machine and starting-generating controller.
The described method includes:
The system, which receives, enters self-check program after start signal, and after the completion of self-check program, closure excitation contactor is risen
Dynamic contactor and A.C. contactor.
Starting/generation control unit runs starting control program, and electric motor starting simultaneously drives engine to rotate, by default
Starting time after detection feedback is carried out to the revolving speed of the motor, judge whether the motor reaches preset disengagement revolving speed.
If the motor is not up to the disengagement revolving speed, starting failure is determined, and disconnect the excitation contactor, described
Starting contactor and the A.C. contactor, are simultaneously stopped the progress of starting sequence, after the default waiting time, receive next time
Start signal.
If the motor reaches the disengagement revolving speed, and does not receive starting and complete signal, then starting failure is determined, and break
The excitation contactor, the starting contactor and the A.C. contactor are opened, the progress of starting sequence is simultaneously stopped, by default
After waiting time, start signal next time is received.
If the motor reaches the disengagement revolving speed, and receives the starting and complete signal, then determine to start successfully, and
Disconnect the excitation contactor, the starting contactor and the A.C. contactor.
Specifically, the three-phase voltage waveform of the Multiple coil electric excitation biconvex electrode electric machine is sine wave.
Further, in the present embodiment further include:
After detecting that motor speed reaches starting revolving speed, after the starting/generation control unit judgement starts successfully,
Whether detection motor speed reaches power generation revolving speed, if reaching the power generation revolving speed, loads signal etc. to be received.
After signal can be loaded described in receiving, detect whether unloaded power generation output end voltage reaches default remanent magnetism voltage, if
Reach the default remanent magnetism voltage, then switches to Generation Control program.
If the not up to described default remanent magnetism voltage, is closed the excitation contactor, is detected again later.Until reaching
To after the default remanent magnetism voltage, disconnects the field application relay and switch to the Generation Control program.Wherein, remanent magnetism is preset
Voltage can be understood as a preset voltage value, for judging that can the remanent magnetism of motor be completed to build to press through journey, if in motor
The voltage that goes out of remanence set remanent magnetism voltage is not achieved, then need it is external by power supply 3 to exciting current.
Starting/the generation control unit is in the implementation procedure of the starting control program, to three-phase full-bridge inverter
The phase current signal and rotor-position signal of output are detected, and the phase current signal and rotor-position signal that will test are defeated
Enter the starting/generation control unit.
Starting/the generation control unit in the implementation procedure of the Generation Control program, to the electric current of excitation winding,
Current signal, the hair for the excitation winding that the voltage of power generation output end and the electric current of power generation output end are detected, and will test
The voltage signal at electricity output end and the current signal of power generation output end input the starting/generation control unit.
In the preferred embodiment of the present embodiment, execution of the starting/generation control unit in the Generation Control program
30 degree of electric angles are maintained between the first armature winding of motor and the second armature winding of the Multiple coil electric excitation biconvex electrode in the process
Spend phase difference.
Usually, 30 degree of electrical angle phase differences are determined by the structure of triangle and star-like armature winding, do not need motor
Outside control maintains 30 degree of electrical angle phase differences, and 30 degree of electrical angle phase differences are that proposed multiwinding machine was run
As soon as the intrinsic feature showed in journey, motor rotary inductive potential will appear this feature.
Further, the starting/generation control unit described in the implementation procedure of the Generation Control program mostly around
Group electric excitation biconvex electrode electric machine provides exciting power by third armature winding, does not need outside when to realizing long-term generator operation
Excitation source.
Starting/the generation control unit is used as by external power supply and is encouraged in the implementation procedure of the starting control program
Magnetic source provides exciting current, without excitation con-trol.Such as power supply 3 shown in FIG. 1 can be used as external power supply.
For example: as shown in Figure 8, it is the low output voltage pulsation in a kind of possible implementation of the present embodiment
Brushless DC start electricity generation system and control method starting control block diagram, the Multiple coil electric excitation biconvex electrode electric machine detected
Rotor-position signal θ obtains motor speed signal n into revolving speed calculating link is crossed, and by motor speed signal n and starts given rotating speed
Signal nrefPhase current Setting signal i is obtained by speed regulator more afterwardsphref, the three-phase full-bridge inverter that detects
Output current signal ia、icPhase current conditioned signal i is obtained by phase current conditioning linkph, phase current Setting signal iphrefWith
Phase current conditioned signal iphPhase current chopping control signal PWM is obtained by phase current regulator more afterwardsi, phase current copped wave control
Signal PWM processediThree-phase full-bridge inverter switching tube chop control is obtained by phase change logic controlling unit with rotor seat signal θ
Pulse-width signal PWMT1~T6, the output electric current of three-phase full-bridge inverter is controlled, to control motor speed, is realized to hair
The start-up function of motivation.
As shown in Figure 9, for the brushless DC start electricity generation system and control method Generation Control of low output voltage pulsation
Block diagram.Detection power generation output end output voltage signal UdcWith power generation output end given voltage signal UdcrefMore afterwards by output
Voltage governing loop obtains excitation winding given value of current signal ifref, detect excitation winding current signal ifWith excitation winding electric current
Setting signal ifrefThe pulsewidth tune of Excitation Power Circuit switching tube chop control is obtained through overexcitation current regulation link more afterwards
Signal PWM processedT7~T8, excitation winding electric current is controlled, to realize Generation Control.
As shown in Figure 10, for the brushless DC start electricity generation system of low output voltage pulsation and the starting hair of control method
Electric control method flow chart.System, which receives, enters self-check program after start signal, after the completion of self-check program, closure excitation contact
Device K1, starting contactor K2With A.C. contactor K5, starting-generating control unit enters starting control program, drives engine rotation
Turn, in preset firing time t1It is fed back afterwards by the detection to motor speed, judges whether motor reaches default and disengage revolving speed v1,
Such as not up to disengage revolving speed v1, then starting failure, disconnection excitation contactor K1, starting contactor K2With A.C. contactor K5, stop
Progress of starting sequence, by presetting waiting time t2Afterwards, start signal next time is received；Revolving speed v is disengaged as detection reaches1, do not receive
It starts and completes signal, then starting failure then disconnects excitation contactor K1, starting contactor K2With A.C. contactor K5, stop
Program, by presetting waiting time t2Afterwards, start signal next time is received；Revolving speed v is disengaged as detection reaches1, receive and started
At signal, then success is started, disconnects excitation contactor K1, starting contactor K2With A.C. contactor K5, whether judge motor speed
Reach power generation revolving speed v2, continued waiting for if not up to, such as reach power generation revolving speed v2, then etc. to be received to load signal.Reception can
After loading signal, detect whether unloaded power generation output end voltage reaches default remanent magnetism voltage UrNIf reaching default remanent magnetism voltage
UrN, then Generation Control program is switched to；If not up to default remanent magnetism voltage UrN, then it is closed excitation contactor K1, examined again
It surveys, presets remanent magnetism voltage U until reaching default remanent magnetism voltagerN, disconnect field application relay K1, switch to Generation Control program.
It is as shown in figure 11, for low output voltage pulsation brushless DC start electricity generation system generate electricity output voltage waveforms with
Traditional electric excitation biconvex electrode electric machine output voltage waveforms comparison diagram.Curve 1 is traditional star armature winding electric excitation biconvex electrode electricity
Voltage waveform when machine power generation output.Curve 2 is the low output that more armature winding electric excitation biconvex electrode electric machines are constituted in the present invention
The output end end voltage waveform that the brushless DC start electricity generation system of mains ripple generates electricity when exporting.In output phase with the feelings of voltage
Under condition, the present invention can be substantially reduced output voltage pulsation.
A kind of preferred control program is provided in the present embodiment, detailed process is as follows: inspection for the system start control
The Multiple coil electric excitation biconvex electrode electric machine rotor-position signal measured calculates link by revolving speed and obtains motor speed signal, will
Motor speed signal obtains phase current Setting signal by speed regulator afterwards compared with given rotating speed signal, three detected
The output current phase signal of phase full-bridge inverter obtains phase current conditioned signal, the given letter of phase current by phase current conditioning link
Number and phase current conditioned signal obtain phase current chopping control signal, phase current chop control by phase current regulator more afterwards
Signal and rotor seat signal pass through phase change logic controlling unit and obtain the pulsewidth of three-phase full-bridge inverter switching tube chop control
Modulated signal, controls the output electric current of three-phase full-bridge inverter, to control motor speed, realizes the starting function to engine
Energy.
As a kind of preferred embodiment that the present invention controls, detailed process is as follows for the system Generation Control: detection power generation is defeated
Outlet output voltage signal compared with the output end given voltage signal that generates electricity afterwards by output voltage governing loop obtain excitation around
Group given value of current signal, detection obtain excitation winding current signal compared with excitation winding given value of current signal afterwards through overexcitation electricity
Stream governing loop obtains the pulse-width signal of Excitation Power Circuit switching tube chop control, controls excitation winding electric current, thus
Realize Generation Control.Starting/power-generating control system is integrated into power-generating control system in conclusion realizing and will start.
All the embodiments in this specification are described in a progressive manner, same and similar portion between each embodiment
Dividing may refer to each other, and each embodiment focuses on the differences from other embodiments.Especially for equipment reality
For applying example, since it is substantially similar to the method embodiment, so describing fairly simple, related place is referring to embodiment of the method
Part explanation.The above description is merely a specific embodiment, but protection scope of the present invention is not limited to
This, anyone skilled in the art in the technical scope disclosed by the present invention, the variation that can readily occur in or replaces
It changes, should be covered by the protection scope of the present invention.Therefore, protection scope of the present invention should be with the protection model of claim
Subject to enclosing.
Claims (13)
1. a kind of DC start electricity generation system based on Multiple coil electric excitation biconvex electrode electric machine characterized by comprising
The system comprises: Multiple coil electric excitation biconvex electrode electric machine and starting-generating controller；
The stator and rotor of the Multiple coil electric excitation biconvex electrode electric machine are salient-pole structure, and three sets of electricity are equipped on the stator
Pivot winding and set of excitation winding, three sets of armature winding include first to third armature winding, wherein the first armature winding
With third armature winding be star-like connection, the second armature winding be triangle connect, the first armature winding, the second armature winding and
Third armature winding shares the excitation winding；
The starting-generating controller include: three-phase full-bridge inverter, the first bridge-type uncontrollable rectifier circuit, the second bridge-type do not control it is whole
Current circuit, Excitation Power Circuit, starting contactor, A.C. contactor, excitation contactor, is encouraged at third bridge-type uncontrollable rectifier circuit
Magnetic relay, power generation contactor, first capacitor, the second capacitor, position sensor, power generation output end voltage sensor, power generation are defeated
Outlet current sensor, three-phase full-bridge inverter output current sensor, excitation winding current sensor and starting/Generation Control
Unit；
The starting contactor, the A.C. contactor, the excitation contactor, the field application relay and power generation contact
Device is controlled by the starting/generation control unit；
The position sensor, power generation output end voltage sensor, power generation output end current sensor, three-phase full-bridge inverter are defeated
Respective detection signal is back to starting/generation control unit by current sensor and excitation winding current sensor out.
2. system according to claim 1, which is characterized in that
The output end of first armature winding is connect with the input terminal of the first bridge-type uncontrollable rectifier circuit；
The output end of second armature winding is connect with the input terminal of the second bridge-type uncontrollable rectifier circuit；
The output end of the first bridge-type uncontrollable rectifier circuit and the circuit output end of the second bridge-type uncontrollable rectifier are in parallel；
The anode of parallel output is connect with the anode of the first capacitor, is generated electricity output end as the starting-generating system
Anode；
The negative terminal of parallel output is connect with the first contact of the first capacitor negative terminal, the power generation contactor, and the power generation connects
Second contact of tentaculum is the negative terminal of starting-generating system power generation output end；
The power generation output end voltage sensor is for detecting the starting-generating system power generation output end voltage, and generate electricity output end
Current sensor is for detecting the starting-generating system power generation output end current.
3. system according to claim 1, which is characterized in that the of first armature winding and the A.C. contactor
The connection of one contact；
Second contact of the A.C. contactor is connect with the output end of the three-phase full-bridge inverter；
The input anode of the three-phase full-bridge inverter is connect with the anode of the second source, the three-phase full-bridge inverter
Input negative terminal is connect with the first contact of the starting contactor；
Second contact of starting contactor is connect with the second source negative terminal, to constitute rising for the starting-generating system
Dynamic circuit；
The three-phase full-bridge inverter output current sensor is complete for detecting three-phase in the starting-generating system start circuit
The two-phase of bridge inverter exports electric current.
4. system according to claim 1, it is characterised in that:
The output end of the third armature winding is connect with the first contact of the field application relay；
Second contact of the field application relay is connect with the third bridge-type uncontrollable rectifier circuit input end；
The output end of the third bridge-type uncontrollable rectifier circuit connects defeated with the Excitation Power Circuit after second capacitor
Enter end connection；
The output end of the Excitation Power Circuit is connect with the excitation winding,
The excitation winding is connect by the excitation contactor with the third power supply, to constitute the starting-generating system
Excitation circuit；
The excitation winding current sensor is used to detect the exciting current in the starting-generating system excitation circuit.
5. system according to claim 1, which is characterized in that first armature winding and the second armature winding circle
Number ratios be
6. system according to claim 1, which is characterized in that the starting/generation control unit is in the Generation Control
It is tieed up between the first armature winding of motor of Multiple coil electric excitation biconvex electrode described in the implementation procedure of program and the second armature winding
Hold 30 degree of electrical angle phase differences.
7. system according to claim 1, which is characterized in that the Excitation Power Circuit is asymmetry half-bridge circuit.
8. a kind of control method of the brushless DC start power generation of low output voltage pulsation, which is characterized in that the method is used for
A kind of DC start electricity generation system based on Multiple coil electric excitation biconvex electrode electric machine, the system comprises: Multiple coil electrical excitation is double
Salient-pole machine and starting-generating controller；
The described method includes:
The system, which receives, enters self-check program after start signal, and after the completion of self-check program, closure excitation contactor is started and connect
Tentaculum and A.C. contactor；
Starting/generation control unit runs starting control program, and electric motor starting simultaneously drives engine to rotate, and is passing through preset
Detection feedback is carried out to the revolving speed of the motor after the dynamic time, judges whether the motor reaches preset disengagement revolving speed；
If the motor is not up to the disengagement revolving speed, starting failure is determined, and disconnect the excitation contactor, the starting
Contactor and the A.C. contactor, are simultaneously stopped the progress of starting sequence；
If the motor reaches the disengagement revolving speed, and does not receive starting and complete signal, then starting failure is determined, and disconnect institute
Excitation contactor, the starting contactor and the A.C. contactor are stated, the starting control program is simultaneously stopped；
If the motor reaches the disengagement revolving speed, and receives the starting and complete signal, then determine to start successfully, and disconnect
The excitation contactor, the starting contactor and the A.C. contactor.
9. control method according to claim 8, which is characterized in that further include:
After detecting that motor speed reaches disengagement revolving speed, and receives the starting and complete signal, the starting/Generation Control
Unit judgement starts successfully and disconnects the excitation contactor, the starting contactor and the A.C. contactor, continues later
Whether detection motor speed reaches power generation revolving speed, if reaching the power generation revolving speed, loads signal etc. to be received.
After signal can be loaded described in receiving, whether power generation output end voltage reaches default remanent magnetism voltage at this time for detection, if reaching
The default remanent magnetism voltage, then switch to Generation Control program；
If the not up to described default remanent magnetism voltage, is closed the excitation contactor, is detected again later；Until reaching
After stating default remanent magnetism voltage, disconnects the field application relay and switch to the Generation Control program.
10. according to control method described in claim 8 and 9, which is characterized in that further include:
Starting/the generation control unit exports three-phase full-bridge inverter in the implementation procedure of the starting control program
Phase current and rotor-position detected, and will test three-phase full-bridge inverter output phase current signal and rotor position
Confidence number inputs the starting/generation control unit.
11. according to control method described in claim 8 and 9, which is characterized in that further include:
Starting/the generation control unit is in the implementation procedure of the Generation Control program, to the excitation electricity in excitation winding
Stream, power generation output end voltage and power generation output end current are detected, and exciting current signal, the power generation output end that will test
Voltage signal and power generation output end current signal input the starting/generation control unit.
12. control method according to claim 1, which is characterized in that the starting/generation control unit is in the power generation
It controls in the implementation procedure of program and provides exciting power by the third armature winding of the Multiple coil electric excitation biconvex electrode electric machine.
13. control method according to claim 1, which is characterized in that the starting/generation control unit is in the starting
In the implementation procedure for controlling program, exciting power is provided by external power supply.
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