Nonlinear compensation and control method and system for inductance model of switched reluctance motor

A switched reluctance motor and non-linear compensation technology, applied in control systems, AC motor control, electrical components, etc., can solve problems such as difficult to establish high-precision inductance models, affect motor torque control torque ripple, etc., to avoid complex Direct modeling, improved dynamic quality, and less computational complexity

Active Publication Date: 2019-12-13
GUILIN UNIV OF ELECTRONIC TECH
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Problems solved by technology

[0004] What the present invention aims to solve is that it is currently difficult to establish a high-precision inductance model, thereby affecting the problem of torque ripple in motor torque control, and provides a method and system for nonlinear compensation and control of an inductance model of a switched reluctance motor

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  • Nonlinear compensation and control method and system for inductance model of switched reluctance motor
  • Nonlinear compensation and control method and system for inductance model of switched reluctance motor
  • Nonlinear compensation and control method and system for inductance model of switched reluctance motor

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[0044] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with specific examples.

[0045]The traditional SRM torque distribution control system based on the linear inductance model is mainly composed of PI (Proportional integral, proportional integral) regulator, torque distribution, torque-current inverse model, current hysteresis, power converter and SRM. PI adjustment according to the torque deviation e, the output torque control amount T c , use the torque distribution function to reasonably distribute the torque control amount to each phase of the SRM according to the rotor position angle θ The phase reference torque is calculated by the torque-current inverse model Converted to Phase Reference Current Use the current hysteresis to realize the detection current, and the reference current Tracking to realize SRM torque control. In the contro...

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Abstract

The invention discloses a nonlinear compensation and control method and system for an inductance model of a switched reluctance motor. The method comprises the steps of designing a fuzzy reasoning rule by using a torque deviation capable of reflecting errors of an SRM linear model and a change rate of the torque deviation as fuzzy reasoning input information, constructing a fuzzy compensator, andachieving the nonlinear feedforward compensation for a linear inductance model; and introducing reinforcement learning, designing a return function, and matching the return function with the fuzzy compensator to further realize nonlinear adaptive optimization compensation of the inductance model and achieve the purpose of indirectly describing strong nonlinear characteristics of the inductance. According to the invention, the dynamic quality of the control system can be effectively improved, and the SRM torque ripple is inhibited. The system can form an embedded system, avoids direct modelingof nonlinear characteristics, is small in calculation amount, and facilitates the online control of the switched reluctance motor.

Description

technical field [0001] The invention relates to the technical field of switched reluctance motors, in particular to an inductance model nonlinear compensation and control method and system for switched reluctance motors. Background technique [0002] Switched reluctance motor (Switched Reluctance Motor, SRM) has the characteristics of simple structure, firmness, no permanent magnet material, low manufacturing cost, high system reliability and wide speed range, and has become the driving device of new energy vehicles, aerospace and other fields preferred. However, due to the inherent double salient structure of SRM, the switching power supply mode and the high saturation of the magnetic circuit, the SRM produces a large torque ripple during the middle and low speed operation, which seriously restricts the development and application of the SRM. Therefore, it is of great theoretical and engineering value to carry out the research on the SRM torque ripple suppression strategy....

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Application Information

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IPC IPC(8): H02P25/098
CPCH02P25/098
Inventor 党选举经本钦施亚洲黄佳李晓张向文伍锡如姜辉刘帆张超潘登
Owner GUILIN UNIV OF ELECTRONIC TECH
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