CN105450108A - Electromechanical energy conversion switch reluctance motor simulation method - Google Patents

Electromechanical energy conversion switch reluctance motor simulation method Download PDF

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CN105450108A
CN105450108A CN201510802148.1A CN201510802148A CN105450108A CN 105450108 A CN105450108 A CN 105450108A CN 201510802148 A CN201510802148 A CN 201510802148A CN 105450108 A CN105450108 A CN 105450108A
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port
resistance
phase
switched reluctance
multiplier
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CN105450108B (en
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陈昊
梁燕
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China University of Mining and Technology CUMT
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China University of Mining and Technology CUMT
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    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
    • H02P6/00—Arrangements for controlling synchronous motors or other dynamo-electric motors using electronic commutation dependent on the rotor position; Electronic commutators therefor
    • H02P6/34—Modelling or simulation for control purposes

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Control Of Electric Motors In General (AREA)

Abstract

The invention discloses an electromechanical energy conversion switch reluctance motor simulation method, and the method is suitable for switch reluctance motors with various phase numbers. According to the invention, the method employs three operational amplifiers, three current transmitters, an inductive reciprocal module, a multiplier, nine resistors and a capacitor to form a switch reluctance motor phase winding simulator, wherein the inductive reciprocal module consists of a digital processing chip, an analog/digital converter and an analog converter. The method is simple, can achieve the circuit simulation, real-time simulation and real-time control of a switch reluctance motor system, is high in calculation speed, is high in precision, does not occupy a storage space, lays a foundation for the pulsation elimination of output torque of the switch reluctance motor system and the control of a no-position sensor, has a high theoretical value, and is good in application prospect.

Description

A kind of energy converting between mechanical switched reluctance machines analogy method
Technical field
The present invention relates to a kind of energy converting between mechanical switched reluctance machines analogy method, be particularly useful for various number of phases switched reluctance machines.
Background technology
Accurate switched reluctance motor system model for assessment motor performance, optimize design of electrical motor, design high performance controller, eliminate torque pulsation and realize position Sensorless Control significant.Switched reluctance motor system model is set up based on electric potential balancing equation and torque balance equation, and its key and difficult point are the simulation of electromagnetic property.At present, switched reluctance machines phase winding analogy method has: coupled field-circuit method, is be coupled in each analogue simulation step-length motor electromagnetic field analysis and winding circuit analysis, can not realizes real-time analog simulation, analytic expression method, that surveyed by summary and induction or through magnetic linkage family of curves feature that FEM (finite element) calculation draws, with binary fitting function by magnetic linkage data determination function parameter known on a small quantity, reconstruct gamut continuous print position and electric current are to the Nonlinear Mapping of magnetic linkage, simulation precision and computing time are also contradictory, can not realize real-time analog simulation, look-up interpolations and neural network, first the magnetic linkage data that some discrete position angles are corresponding with electric current are obtained, set up the two-dimentional form of magnetic linkage to position and electric current, then optional position and magnetic linkage corresponding to any electric current is exported by the neural net after table look-up interpolation or training, under the condition of known motor structure and material parameter, Finite element arithmetic can be used to draw magnetic linkage data, for the motor not providing relevant parameter, then need to measure by experiment and obtain magnetic linkage or inductive data, the simulation precision of the method depends primarily on sample magnetic linkage data, also be difficult to realize high-precision real-time analog simulation, equivalent magnetic network method, the magnetic line of force route characteristic drawn by analysis finite element method, set up the equivalent magnetic circuit network of motor, application circuit analytical method calculates magnetic linkage, but for improving accuracy of detection, being necessary to set up and considering alternate mutual inductance, three-dimensional or multi-dimensional spreadsheet be built, namely current phase current, position, other phase mutual inductances are to the mapping of magnetic linkage, but huge amount of calculation reduces its practicality.Application number is: 201510247960.2 disclose a kind of Modeling of Switched Reluctance Motors method, to the simulation error of switched reluctance machines average torque within 3.9%, to the simulation error of switched reluctance machines rotating speed within 0.16%.Therefore, be badly in need of the accurate height of foundation simulation, calculate the switched reluctance machines phase winding simulator soon, not taking memory space, realize the high accuracy real-time simulation of switched reluctance motor system and control in real time.
Summary of the invention
The object of the invention is for problems of the prior art, the switched reluctance machines analogy method that a kind of method is simple, can realize switched reluctance motor system circuit simulation is provided.
For achieving the above object, energy converting between mechanical switched reluctance machines analogy method of the present invention, comprise and adopt switched reluctance machines phase winding simulator, switched reluctance machines phase winding simulator comprises three operational amplifiers U1, U2 and U3, three current transmission devices U4, U5 and U6, inductance module reciprocal, a multiplier U7-AD633, nine resistance R1, R2, R3, R4, R5, R6, R7, R dand R swith an electric capacity C i, input port is A and B; Input port A is by resistance R srespectively with the in-phase input end mouth of operational amplifier U1+be connected with the port z of current transmission device U4, input port B is connected with the port y of current transmission device U6 with the port z of current transmission device U5 respectively, the output port O of operational amplifier U1 respectively with anti-phase input port-and the resistance R of operational amplifier U1 1one end be connected, resistance R 1the other end respectively with the anti-phase input port of operational amplifier U2-and resistance R 3one end be connected, the in-phase input end mouth of operational amplifier U2+respectively and resistance R 2with resistance R 4one end be connected, resistance R 4other end ground connection, resistance R 2the other end be connected with the port x of current transmission device U6, the output port O of operational amplifier U2 respectively with resistance R 3the other end and resistance R 5one end be connected, resistance R 5the other end respectively with the anti-phase input port of operational amplifier U3-and electric capacity C ione end be connected, in-phase input end mouth+the ground connection of operational amplifier U3, the port y ground connection of current transmission device U4, the port x of current transmission device U4 is connected with the port x of current transmission device U5 by resistance Rd, the port z ground connection of current transmission device U6, switched reluctance machines analogy method is as follows:
By the output port O of operational amplifier U3 respectively with electric capacity C ithe other end and the x of multiplier U7-AD633 1port is connected, and is connected by the port y of current transmission device U5 with the w port of multiplier U7-AD633, the x of multiplier U7-AD633 2port ground connection, the y of multiplier U7-AD633 2port ground connection, is connected one end of resistance R6 with the w port of multiplier U7-AD633, and the other end of resistance R6 is connected with the z port of multiplier U7-AD633, resistance R 7one end be connected with the z port of multiplier U7-AD633, the other end ground connection of resistance R7, by the output O of module and the y of multiplier U7-AD633 reciprocal for inductance 1port is connected, and the output voltage values of inductance module reciprocal is v y, inductance module reciprocal be input as electric machine phase current instantaneous value i and motor rotor position value θ; By switched reluctance machines equivalent model analog machine electric energy conversion switched reluctance machines variable inductance L value and electric machine phase current instantaneous value i and motor rotor position value theta function relation, the variable inductance L value of inductance module reciprocal is drawn by following formula:
L = 10 R 6 R d R 1 R 5 C i R 3 ( R 6 + R 7 ) · 1 v y
In formula: R1, R3, R5, R6, R7, Rd are resistance value, Ci is capacitance, and vy is magnitude of voltage, and magnitude of voltage vy is the function of electric machine phase current instantaneous value i and rotor position θ;
Circuit model between input port A and input port B is equivalent to connecting of the variable inductance L of resistance Rs and motor, be built into switched reluctance machines phase winding equivalent simulation device, resistance Rs analog switch reluctance motor phase winding resistance, variable inductance L analog switch reluctance motor phase winding inductance, switched reluctance machines phase winding inductance is the function of motor rotor position and phase current, obtains switched reluctance machines equivalent model.
Described inductance module reciprocal is made up of digital processing chip, analog/digital converter ADC, digital/analog converter DAC, analog/digital converter ADC is input as electric machine phase current instantaneous value i and motor rotor position value θ, the output of analog/digital converter ADC connects the input phase of digital processing chip, the output of digital processing chip connects the input phase of digital/analog converter DAC, and the output of digital/analog converter DAC is magnitude of voltage vy.
Beneficial effect: the present invention adopts operational amplifier, current transmission device, inductance module reciprocal, multiplier, resistance, electric capacity to build switched reluctance machines phase winding simulator, switched reluctance motor system circuit simulation, real-time simulation can be realized and control in real time, calculate fast, accurate height, do not take memory space, to the simulation error of switched reluctance machines average torque within 0.34%, to the simulation error of switched reluctance machines rotating speed within 0.09%.For disappear pulsation, position Sensorless Control of switched reluctance motor system Driving Torque lays the foundation, there is important theory value and wide commercial application prospect.
Accompanying drawing explanation
Fig. 1 is switched reluctance machines phase winding simulator circuit diagram of the present invention.
Fig. 2 is the switched reluctance machines phase voltage U that switched reluctance machines phase winding simulator of the present invention reappears a', phase current i a' and magnetic linkage ψ a' waveform.
Embodiment
Below in conjunction with accompanying drawing, one embodiment of the present of invention are further described:
As shown in Figure 1, switched reluctance machines analogy method, comprise and adopt switched reluctance machines phase winding simulator, switched reluctance machines phase winding simulator adopts three operational amplifiers U1, U2 and U3, three current transmission devices U4, U5 and U6, inductance module reciprocal, a multiplier U7-AD633, nine resistance R1, R2, R3, R4, R5, R6, R7, R dand R s, an and electric capacity C i, input port is A and B;
By input port A by resistance R srespectively with the in-phase input end mouth of operational amplifier U1+be connected with the port z of current transmission device U4, input port B is connected with the port y of current transmission device U6 with the port z of current transmission device U5 respectively, the output port O of operational amplifier U1 respectively with anti-phase input port-and the resistance R of operational amplifier U1 1one end be connected, resistance R 1the other end respectively with the anti-phase input port of operational amplifier U2-and resistance R 3one end be connected, the in-phase input end mouth of operational amplifier U2+respectively and resistance R 2with resistance R 4one end be connected, resistance R 4other end ground connection, resistance R 2the other end be connected with the port x of current transmission device U6, the output port O of operational amplifier U2 respectively with resistance R 3the other end and resistance R 5one end be connected, resistance R 5the other end respectively with the anti-phase input port of operational amplifier U3-and electric capacity C ione end be connected, in-phase input end mouth+the ground connection of operational amplifier U3, the port y ground connection of current transmission device U4, the port x of current transmission device U4 is connected with the port x of current transmission device U5 by resistance Rd, the port z ground connection of current transmission device U6, is equivalent to resistance R by the circuit model between input port A and input port B swith connecting of the variable inductance L of motor, be built into switched reluctance machines phase winding equivalent simulation device, resistance R sanalog switch reluctance motor phase winding resistance, variable inductance L analog switch reluctance motor phase winding inductance, switched reluctance machines phase winding inductance is the function of motor rotor position and phase current, obtain switched reluctance machines equivalent model, by switched reluctance machines equivalent model analog machine electric energy conversion switched reluctance machines variable inductance L value and electric machine phase current instantaneous value i and motor rotor position value theta function relation:
(1) by the output port O of operational amplifier U3 respectively with electric capacity C ithe other end be connected with the x1 port of multiplier U7-AD633, the port y of current transmission device U5 is connected with the w port of multiplier U7-AD633, the x2 port ground connection of multiplier U7-AD633, the y2 port ground connection of multiplier U7-AD633, one end of resistance R6 is connected with the w port of multiplier U7-AD633, the other end of resistance R6 is connected with the z port of multiplier U7-AD633, one end of resistance R7 is connected with the z port of multiplier U7-AD633, the other end ground connection of resistance R7, the inductance output O of module reciprocal is connected with the y1 port of multiplier U7-AD633, the output voltage values of inductance module reciprocal is v y, the input of inductance module reciprocal is electric machine phase current instantaneous value i and motor rotor position value θ,
(2) the variable inductance L value of inductance module reciprocal can be expressed as:
L = 10 R 6 R d R 1 R 5 C i R 3 ( R 6 + R 7 ) · 1 v y
In formula, R1, R3, R5, R6, R7, Rd are corresponding resistance value, and Ci is corresponding capacitance.Magnitude of voltage vy is the function of electric machine phase current instantaneous value i and rotor position θ.
Circuit model between input port A and input port B is equivalent to connecting of the variable inductance L of resistance Rs and motor, be built into switched reluctance machines phase winding equivalent simulation device, resistance Rs analog switch reluctance motor phase winding resistance, variable inductance L analog switch reluctance motor phase winding inductance, switched reluctance machines phase winding inductance is the function of motor rotor position and phase current, obtains switched reluctance machines equivalent model.
Described inductance module reciprocal is made up of digital processing chip, analog/digital converter ADC, digital/analog converter DAC, the input of analog/digital converter ADC is electric machine phase current instantaneous value i and motor rotor position value θ, the output of analog/digital converter ADC is connected with the input of digital processing chip, the output of digital processing chip is connected with the input of digital/analog converter DAC, and the output of digital/analog converter DAC is magnitude of voltage v y.
Fig. 2 is the switched reluctance machines phase voltage U of switched reluctance machines phase winding simulator of the present invention simulation a', phase current i a' and magnetic linkage ψ a' waveform.As shown in Figure 2, the switched reluctance machines phase winding simulator set up, can analog machine electric energy conversion switched reluctance machines variable inductance L value and electric machine phase current instantaneous value i and motor rotor position value theta function relation, realize switched reluctance motor system circuit simulation, real-time simulation and control in real time, calculate fast, accurate height, do not take memory space, solve the contradiction between switched reluctance motor system analogue simulation cost and real-time, disappear pulsation, position Sensorless Control of switched reluctance motor system Driving Torque can be made accurately high.

Claims (2)

1. an energy converting between mechanical switched reluctance machines analogy method, comprise and adopt switched reluctance machines phase winding simulator, switched reluctance machines phase winding simulator comprises three operational amplifiers U1, U2 and U3, three current transmission devices U4, U5 and U6, inductance module reciprocal, a multiplier U7-AD633, nine resistance R1, R2, R3, R4, R5, R6, R7, R d, R swith an electric capacity C i, input port is A and B; Input port A is by resistance R srespectively with the in-phase input end mouth of operational amplifier U1+be connected with the port z of current transmission device U4, input port B is connected with the port y of current transmission device U6 with the port z of current transmission device U5 respectively, the output port O of operational amplifier U1 respectively with anti-phase input port-and the resistance R of operational amplifier U1 1one end be connected, resistance R 1the other end respectively with the anti-phase input port of operational amplifier U2-and resistance R 3one end be connected, the in-phase input end mouth of operational amplifier U2+respectively and resistance R 2with resistance R 4one end be connected, resistance R 4other end ground connection, resistance R 2the other end be connected with the port x of current transmission device U6, the output port O of operational amplifier U2 respectively with resistance R 3the other end and resistance R 5one end be connected, resistance R 5the other end respectively with the anti-phase input port of operational amplifier U3-and electric capacity C ione end be connected, in-phase input end mouth+the ground connection of operational amplifier U3, the port y ground connection of current transmission device U4, the port x of current transmission device U4 is connected with the port x of current transmission device U5 by resistance Rd, the port z ground connection of current transmission device U6, is characterized in that:
By the output port O of operational amplifier U3 respectively with electric capacity C ithe other end and the x of multiplier U7-AD633 1port is connected, and is connected by the port y of current transmission device U5 with the w port of multiplier U7-AD633, the x of multiplier U7-AD633 2port ground connection, the y of multiplier U7-AD633 2port ground connection, is connected one end of resistance R6 with the w port of multiplier U7-AD633, and the other end of resistance R6 is connected with the z port of multiplier U7-AD633, resistance R 7one end be connected with the z port of multiplier U7-AD633, the other end ground connection of resistance R7, by the output O of module and the y of multiplier U7-AD633 reciprocal for inductance 1port is connected, and the output voltage values of inductance module reciprocal is v y, inductance module reciprocal be input as electric machine phase current instantaneous value i and motor rotor position value θ; By switched reluctance machines equivalent model analog machine electric energy conversion switched reluctance machines variable inductance L value and electric machine phase current instantaneous value i and motor rotor position value theta function relation, the variable inductance L value of inductance module reciprocal is drawn by following formula:
L = 10 R 6 R d R 1 R 5 C i R 3 ( R 6 + R 7 ) · 1 v y
In formula: R1, R3, R5, R6, R7, Rd are resistance value, Ci is capacitance, and vy is magnitude of voltage, and magnitude of voltage vy is the function of electric machine phase current instantaneous value i and rotor position θ;
Circuit model between input port A and input port B is equivalent to connecting of the variable inductance L of resistance Rs and motor, be built into switched reluctance machines phase winding equivalent simulation device, resistance Rs analog switch reluctance motor phase winding resistance, variable inductance L analog switch reluctance motor phase winding inductance, switched reluctance machines phase winding inductance is the function of motor rotor position and phase current, obtains switched reluctance machines equivalent model.
2. energy converting between mechanical switched reluctance machines analogy method according to claim 1, it is characterized in that: described inductance module reciprocal is by digital processing chip, analog/digital converter ADC, digital/analog converter DAC is formed, analog/digital converter ADC is input as electric machine phase current instantaneous value i and motor rotor position value θ, the output of analog/digital converter ADC connects the input phase of digital processing chip, the output of digital processing chip connects the input phase of digital/analog converter DAC, the output of digital/analog converter DAC is magnitude of voltage vy.
CN201510802148.1A 2015-11-19 2015-11-19 A kind of energy converting between mechanical switched reluctance machines analogy method Active CN105450108B (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112511058A (en) * 2020-12-16 2021-03-16 哈尔滨工业大学 Method for rapidly, accurately and comprehensively calculating characteristics of servo motor influenced by temperature

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102916632A (en) * 2012-10-22 2013-02-06 中国矿业大学 Linear modeling method of switch reluctance motor memristor
CN103095191A (en) * 2013-01-29 2013-05-08 中国矿业大学 Switch reluctance motor memory sensor model modeling method
CN103490697A (en) * 2013-09-18 2014-01-01 中国矿业大学 Switch reluctance motor memory inductor equivalent model
CN104836492A (en) * 2015-05-15 2015-08-12 中国矿业大学 Switch magnetic resistance motor modeling method

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1357275A1 (en) * 2002-04-26 2003-10-29 Visteon Global Technologies, Inc. Modelling of the thermal behaviour of a switched reluctance motor driving a supercharger of an internal combustion engine
CN103795317B (en) * 2013-12-31 2016-06-01 清华大学 Based on the Controlling System of synchronous machine model

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102916632A (en) * 2012-10-22 2013-02-06 中国矿业大学 Linear modeling method of switch reluctance motor memristor
CN103095191A (en) * 2013-01-29 2013-05-08 中国矿业大学 Switch reluctance motor memory sensor model modeling method
CN103490697A (en) * 2013-09-18 2014-01-01 中国矿业大学 Switch reluctance motor memory inductor equivalent model
CN104836492A (en) * 2015-05-15 2015-08-12 中国矿业大学 Switch magnetic resistance motor modeling method

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
ANALOG DEVICES INC: "《AD633 Data Sheet》", 16 September 2013 *
DALIBOR BIOLEK等: "SPICE Modeling of Memristive, Memcapacitative and Meminductive Systems", 《CIRCUIT THEORY AND DESIGN, 2009. ECCTD 2009. EUROPEAN CONFERENCE ON》 *
YU.V.PERSHIN等: "Emulation of floating memcapacitors and meminductors using current conveyors", 《ELECTRONICS LETTERS》 *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112511058A (en) * 2020-12-16 2021-03-16 哈尔滨工业大学 Method for rapidly, accurately and comprehensively calculating characteristics of servo motor influenced by temperature

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