CN107872184A - A kind of switched reluctance motor controller optimization design - Google Patents
A kind of switched reluctance motor controller optimization design Download PDFInfo
- Publication number
- CN107872184A CN107872184A CN201711154427.7A CN201711154427A CN107872184A CN 107872184 A CN107872184 A CN 107872184A CN 201711154427 A CN201711154427 A CN 201711154427A CN 107872184 A CN107872184 A CN 107872184A
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Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P25/00—Arrangements or methods for the control of AC motors characterised by the kind of AC motor or by structural details
- H02P25/02—Arrangements or methods for the control of AC motors characterised by the kind of AC motor or by structural details characterised by the kind of motor
- H02P25/08—Reluctance motors
- H02P25/092—Converters specially adapted for controlling reluctance motors
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P25/00—Arrangements or methods for the control of AC motors characterised by the kind of AC motor or by structural details
- H02P25/02—Arrangements or methods for the control of AC motors characterised by the kind of AC motor or by structural details characterised by the kind of motor
- H02P25/08—Reluctance motors
- H02P25/092—Converters specially adapted for controlling reluctance motors
- H02P25/0925—Converters specially adapted for controlling reluctance motors wherein the converter comprises only one switch per phase
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P2203/00—Indexing scheme relating to controlling arrangements characterised by the means for detecting the position of the rotor
- H02P2203/01—Motor rotor position determination based on the detected or calculated phase inductance, e.g. for a Switched Reluctance Motor
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P2205/00—Indexing scheme relating to controlling arrangements characterised by the control loops
- H02P2205/01—Current loop, i.e. comparison of the motor current with a current reference
Abstract
The present invention relates to a kind of Optimization Design for switched reluctance motor controller, including orientation optimization to design, the design of closed loop Angle-domain imaging circuit and the design of Current cut control circuit.Benchmark is used as by the use of the saltus step of integrated signal, pass through an adjustable delay circuit, along with appropriate digital-to-analogue combinational circuit integrates out a three-phase control signal, this three-phase control signal can realize the regulation at shut-off angle by adjusting the delay time of delay circuit；A proportional and integral controller is added, to automatically adjust the discharge current of electric capacity, reaches the purpose of control turn-on angle.
Description
Technical field
The present invention relates to switched Reluctance Motor Control, particularly controller orientation optimization circuit design and current chopping
The optimization design of control circuit.
Background technology
Switched reluctance machines make it have simple solid, easily fabricated, suitable high speed work due to its unique physical arrangement
Make, fault freedom is good, overload capacity is strong, efficiency and specific power index are high, good to battery charging performance, controllable parameter is more, control
Performance processed waits well the advantages of prominent, meanwhile, motor use can be made under the control of micro computer, and can makees generator use,
And control is flexible, it is possible to the starting of automobile and generator are combined into one, simplifies vehicle structure, reduce cost, carry
High power and reliability.The external aircraft since the end of the eighties has progressed to product testing with switch magnetic-resistance starting generator
Stage, the domestic research to switch reluctance generator start to be directed to switch reluctance generator and aircraft since the beginning of the nineties
The research of starter-generator, and substantial amounts of experiment has been done with control chips such as 8031,80C196, more systematically elaborate out
Mechanism of the reluctance motor as generator operation and the control method as starter-generator are closed, and proposes some optimization controls
The strategy of system.At present for the research of switch reluctance generator, also mostly collect all in laboratory research stage, the focus of research
In in control method.
The content of the invention
The technical problem to be solved in the present invention is：In order to overcome the shortcomings of that error rate is high in existing controller, the present invention carries
For a kind of controller design of optimization.The technical solution adopted for the present invention to solve the technical problems includes：
(1) orientation optimization circuit design
Always there is a skip signal every 15 °, therefore can be three-phase signal synthesis into the synthesis every 15 ° of saltus steps once
Signal.By the use of some saltus step of integrated signal as benchmark, by an adjustable delay circuit, along with appropriate digital-to-analogue
Combinational circuit integrates out a three-phase control signal, this three-phase control signal can by adjust the delay time of delay circuit come
Realize the regulation at shut-off angle.
(2) design of closed loop Angle-domain imaging circuit
A pi regulator is added, to automatically adjust electric capacity C2 discharge current, reaches the purpose of control turn-on angle,
Therefore, triode Q2 here is operated in amplification region, rather than saturation region.U in figurefIt is value of feedback, if necessary to current regulation,
So this value of feedback should be bus current, if voltage-regulation, that should be just busbar voltage.U in figurerIt is then control electricity
The a reference value on road, the model of whole pi regulator are shown below.
(3) design of Current cut control circuit
Current chopping is a kind of mode of current protection, even therefore Angle-domain imaging mode, current chopping circuit
As current protection and needs, simultaneously as the essence of current chopping is controlling switch reluctance generator excitation phase current
Size, and the size of phase current will be directly connected to the size of power output.
Brief description of the drawings
The present invention is further described with reference to the accompanying drawings and examples.
Fig. 1 is off angle and optimizing circuit.
Fig. 2 is off angle angle and optimizing timing diagram.
Fig. 3 is Angle-domain imaging circuit.
Fig. 4 is Angle-domain imaging sequential.
Fig. 5 is Current cut control circuit.
Embodiment
In conjunction with the accompanying drawings, the present invention is further explained in detail.These accompanying drawings are simplified schematic diagram, only with
Illustration illustrates the basic structure of the present invention, therefore it only shows the composition relevant with the present invention.
The technical solution adopted for the present invention to solve the technical problems includes：
(1) orientation optimization circuit design
In switching magnetic-resistance electricity generation system, influence of the shut-off angle to power output is more sensitive, and has individual optimum point, this
Individual optimum point does not change with the change of rotating speed substantially, and turn-on angle is different, in sizable scope of turn-on angle change
It is interior, and power output has preferable linear relationship, therefore, turn-on angle is suitable as the controlled quentity controlled variable of angular position feedback control,
And can be needed to optimize shut-off angle in advance near optimum point to ensure to turn off angle, therefore, specially devising a pass
The optimization circuit of the angle of rupture.The design philosophy of this circuit is such：Always there is a skip signal every 15 °, therefore can be three
Phase signals synthesis is into the integrated signal every 15 ° of saltus steps once.By the use of some saltus step of integrated signal as benchmark, pass through one
Adjustable delay circuit, along with appropriate digital-to-analogue combinational circuit integrates out a three-phase control signal, this three phase control letter
Number the regulation at shut-off angle can be realized by adjusting the delay time of delay circuit, circuit design is as shown in Figure 1.
When the upper saltus step of integrated signal generation, there must be a phase position signal that upper saltus step occurs first, meanwhile, driven for electric current
Transistor Q1 saturations it is open-minded ,+5V voltages are charged rapidly by diode D2 to electric capacity C1, are just charged to LM339 bases in electric capacity C1
Before quasi- voltage in a flash, 74LS373 is high level, therefore the upper jump position signal of certain phase can pass through 74LS373,
Reflect output end, after electric capacity C1 is charged to reference voltage, LM339 output low levels, 74LS373 latch modes；Believe when comprehensive
During number lower saltus step, also necessarily there is a phase position signal that lower saltus step occurs, now electric capacity is discharged by resistance R6 and diode D1, is put
The electric time can be changed by adjusting R6, therefore the upset of LM339 outputs also just has individual delay, then certain position mutually occurred
Saltus step must also be delayed by 74LS373 under signal, using this delay principle, and carry out sufficient logic to each phase position signal
It is comprehensive and utilize, just draw the threephase switch signal that one group of shut-off angle can be adjusted, specific sequential is as shown in Figure 2.
Trailing edge per phase position signal is exactly the open position of this phase control signal, and the scram position of control signal can
To be adjusted in the range of △ α by potentiometer R6, △ α≤15 ° (mechanical angle) here, therefore, if Reasonable adjustment rotating disk with
The relative position of position sensor, it can just obtain and reasonably open Angle Position on relative phase inductance curve, then, shut-off angle is entered
Row optimization, to obtain optimal power output, on this basis, carrying out the angular position feedback using turn-on angle as control parameter
Control.
(2) design of closed loop Angle-domain imaging circuit
For Angle-domain imaging mode, general control is turn-on angle, also devises one here and is adjusted based on simulation PI
Save the Angle-domain imaging circuit of device.The design philosophy of this circuit is similar to shut-off angle and optimizing circuit, main difference is that first
The mode that first manual regulation capacitance discharge current is automatically adjusted instead, secondly, what is adjusted here should be the upper of control signal
Edge is risen, that is, opens Angle Position.Circuit design is as shown in Figure 3.
A pi regulator is added, to automatically adjust electric capacity C2 discharge current, reaches the purpose of control turn-on angle,
Therefore, triode Q2 here is operated in amplification region, rather than saturation region.U in figurefIt is value of feedback, if necessary to current regulation,
So this value of feedback should be bus current, if voltage-regulation, that should be just busbar voltage.U in figurerIt is then control electricity
The a reference value on road, the model of whole pi regulator are shown below.
For pi regulator, it is most important that the design of PI parameters, design here follow following principle：
(a) in value of feedback scope certain near the steady-state value, triode Q2 should be allow to be operated in any of amplification region
Point；
(b) because the angle of circuit continuously adjusts scope and only had 15 ° (mechanical angles), therefore adjusting strength can not be too big,
But response speed should as quickly as possible, and this is also usually requiring that for pi regulator.
From fig. 4, it can be seen that continuously the amplitude △ α of adjustment turn-on angle are maximum 15 ° (mechanical angles) here, i.e., according to the pass of optimization
After angle of rupture adjustment rotating disk, the adjustable range of turn-on angle is (θoff- 45 °)~(θoff-30°)。
(3) design of Current cut control circuit
Current chopping is a kind of mode of current protection, even therefore Angle-domain imaging mode, simultaneously as electric current
The essence of copped wave is the size of controlling switch reluctance generator excitation phase current, and the size of phase current will be directly connected to it is defeated
Go out the size of power.Fig. 5 represents Current cut control circuit.
UrBe system benchmark input, UfIt is feedback quantity, equally can is bus current or busbar voltage, PI is adjusted
Benchmark of the device output as chopper circuit after a voltage follower is isolated is saved to input.
Claims (1)
- A kind of 1. optimization design for switched reluctance motor controller, it is characterised in that：Including(1) include orientation optimization to designAlways there is a skip signal every 15 °, therefore can be three-phase signal synthesis into the comprehensive letter every 15 ° of saltus steps once Number.By the use of some saltus step of integrated signal as benchmark, by an adjustable delay circuit, along with appropriate digital-to-analogue group Close circuit synthesis and go out a three-phase control signal, this three-phase control signal can be by adjusting the delay time of delay circuit come real Now turn off the regulation at angle.(2) design of closed loop Angle-domain imaging circuitA pi regulator is added, to automatically adjust the discharge current of electric capacity, reaches the purpose of control turn-on angle, control three Pole pipe is operated in amplification region, rather than saturation region.The model of pi regulator is shown below.UfIt is value of feedback, UrIt is then control electricity The a reference value on road.<mrow> <msub> <mi>U</mi> <mi>o</mi> </msub> <mo>=</mo> <msub> <mi>U</mi> <mi>r</mi> </msub> <mo>+</mo> <mrow> <mo>(</mo> <mfrac> <msub> <mi>R</mi> <mn>8</mn> </msub> <msub> <mi>R</mi> <mn>6</mn> </msub> </mfrac> <mo>+</mo> <mfrac> <mn>1</mn> <mrow> <msub> <mi>R</mi> <mn>6</mn> </msub> <msub> <mi>C</mi> <mn>1</mn> </msub> <mi>s</mi> </mrow> </mfrac> <mo>)</mo> </mrow> <mrow> <mo>(</mo> <msub> <mi>U</mi> <mi>r</mi> </msub> <mo>-</mo> <msub> <mi>U</mi> <mi>f</mi> </msub> <mo>)</mo> </mrow> </mrow>(3) design of Current cut control circuitCurrent chopping is a kind of mode of current protection, even therefore Angle-domain imaging mode, current chopping circuit conduct Current protection is also what is needed, simultaneously as the essence of current chopping is the big of controlling switch reluctance generator excitation phase current It is small, and the size of phase current will be directly connected to the size of power output.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711154427.7A CN107872184A (en) | 2017-11-20 | 2017-11-20 | A kind of switched reluctance motor controller optimization design |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711154427.7A CN107872184A (en) | 2017-11-20 | 2017-11-20 | A kind of switched reluctance motor controller optimization design |
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| CN107872184A true CN107872184A (en) | 2018-04-03 |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101697472A (en) * | 2009-10-21 | 2010-04-21 | 南京航空航天大学 | Control method for widening turn-on of bearingless switched reluctance full-period generator |
| CN101860302A (en) * | 2010-05-08 | 2010-10-13 | 山东科汇电力自动化有限公司 | Turn-on angle control method for switched reluctance motor |
| US20130147416A1 (en) * | 2011-12-09 | 2013-06-13 | Caterpillar, Inc. | Switching Strategy for Switched Reluctance Machine |
| US20150002055A1 (en) * | 2013-06-28 | 2015-01-01 | The Board Of Regents, The University Of Texas System | Single bus star connected reluctance drive and method |
-
2017
- 2017-11-20 CN CN201711154427.7A patent/CN107872184A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101697472A (en) * | 2009-10-21 | 2010-04-21 | 南京航空航天大学 | Control method for widening turn-on of bearingless switched reluctance full-period generator |
| CN101860302A (en) * | 2010-05-08 | 2010-10-13 | 山东科汇电力自动化有限公司 | Turn-on angle control method for switched reluctance motor |
| US20130147416A1 (en) * | 2011-12-09 | 2013-06-13 | Caterpillar, Inc. | Switching Strategy for Switched Reluctance Machine |
| US20150002055A1 (en) * | 2013-06-28 | 2015-01-01 | The Board Of Regents, The University Of Texas System | Single bus star connected reluctance drive and method |
Non-Patent Citations (1)
| Title |
|---|
| VSHOULRENGB3: "开关磁阻电机控制策略的研究", 《原创力文档》 * |
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Application publication date: 20180403 |