Switch magnetic resistance motor modeling method
A technology of switched reluctance motor and modeling method, which is applied in the direction of AC motor control, electronic commutation motor control, electrical components, etc., and can solve the problem of inaccurate switched reluctance motor model, difficulty in real-time simulation and real-time control, and model height Linearity and other problems, to achieve the effect of solving simulation cost and real-time performance, broad industrial application prospects, and less storage space
Active Publication Date: 2015-08-12
CHINA UNIV OF MINING & TECH
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However, due to the double salient pole structure and magnetic saturation characteristics of the switched reluctance motor, the model is highly nonlinear and the mathematical expression is very complicated.
At present, the modeling methods of the switched reluctance motor model mainly include: using the static flux data of the motor obtained by the finite element calculation of the motor electromagnetic field, and using the look-up table method to realize the construction of the model in the circuit simulation software, which takes a long time to calculate and takes up a lot of storage space , it is difficult to be used for real-time simulation and real-time control; to construct the magnetic network, use the static flux data of the motor obtained by magnetic circuit calculation, and use the look-up table method to realize the model construction in the circuit simulation software. The simple magnetic network will make the established switch magnetic The resistance motor model is not accurate, and the complex magnetic network helps to establish an accurate switched reluctance motor model, but its versatility is not high, and the determination of the magnetic circuit parameters depends on experience
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[0016] Below in conjunction with accompanying drawing, one embodiment of the present invention is further described:
[0017] like figure 1 As shown, the switched reluctance motor modeling method of the present invention adopts four operational amplifiers U1, U2, U3 and U4, three current transmitters U5, U6 and U7, and one consists of a digital potentiometer and a digital controller. Variable resistance R MP , eight resistors R1, R2, R3, R4, R5, R O , Rx and R S , capacitor C, the input ports are A and B respectively;
[0018] Its modeling method is as follows,
[0019] Connect input port A through resistor R S with the non-inverting input port of op amp U1 and the port of current conveyor U5, respectively z connected, the input port B is respectively connected with the port of the current transmitter U6 z and port of current transmitter U7 y connected, the output port O of the operational amplifier U1 is respectively connected with the inverting input port of the op...
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The invention discloses a switch magnetic resistance motor modeling method, and is applied to various-phase switch magnetic resistance motors. The switch magnetic resistance motor modeling method employs four operational amplifiers, three current transmitters, one variable resistor composed of a digital potentiometer and one digital controller, eight resistors and one capacitor to form a switch magnetic resistance motor phase winding equivalent model. The modeling method is simple, can realize mathematics direct simulation of a switch magnetic resistance motor system, can realize real-time simulation and real-time control, lays a foundation for the physical simulation modeling and the mathematics direct simulation of the switch magnetic resistance motor system, and facilitates real-time simulation of the switch magnetic resistance motor system, thereby having an important theoretical value and wide application prospect.
Description
technical field [0001] The invention relates to a model modeling method of a switched reluctance motor, which is especially suitable for a switching reluctance motor modeling method used by switched reluctance motors of various phases. Background technique [0002] The unique doubly salient structure of the switched reluctance motor and the working mode of each phase's separate excitation make it superior to the traditional motor drive system in terms of manufacturing cost, control flexibility and fault tolerance. However, due to the doubly salient structure and magnetic saturation characteristics of the switched reluctance motor, its model is highly nonlinear and the mathematical expression is very complicated. At present, the model modeling methods of switched reluctance motor mainly include: using the static flux linkage data of the motor obtained by the finite element calculation of the electromagnetic field of the motor, and using the look-up table method to realize the...
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IPC IPC(8): H02P6/10H02P6/18
CPCH02P6/10H02P6/186H02P6/18H02P6/34H02P25/08
Inventor 陈昊梁燕
Owner CHINA UNIV OF MINING & TECH