Torque ripple suppression control system and method for switched reluctance motor based on flux linkage

A switched reluctance motor and torque pulsation technology, which is applied in the control system, AC motor control, electrical components, etc., can solve the problem that it is difficult to establish an accurate mathematical model for SRM control

Active Publication Date: 2021-06-08
GUILIN UNIV OF ELECTRONIC TECH
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Problems solved by technology

[0003] The present invention aims to solve the problem that it is difficult to establish an accurate mathematical model in

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  • Torque ripple suppression control system and method for switched reluctance motor based on flux linkage
  • Torque ripple suppression control system and method for switched reluctance motor based on flux linkage
  • Torque ripple suppression control system and method for switched reluctance motor based on flux linkage

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Embodiment Construction

[0048] 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.

[0049] 1. Traditional SRM flux control

[0050] Based on TSF (Torque distribution function) traditional flux control system such as figure 1 As shown, it is mainly composed of PI (Proportional Integral) regulator, torque distribution module, torque-flux model, flux calculation, flux hysteresis controller, power converter and other links. Control system outer loop: PI regulator according to the set reference speed ω ref and speed control amount ω * The deviation e of the output reference torque T ref , where the rotational speed control quantity ω * It is obtained by differentiating the rotor position angle q. The torque distribution module transfers the reference torque T according to the rotor position angle q ref Reasonably distributed to each phase of the SRM to ...

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Abstract

The invention discloses a torque ripple suppression control system and method for a switched reluctance motor based on flux linkage. The system employs a neural network torque estimation model to estimate the torque, employs a dynamic RBF neural network torque-flux linkage model to achieve the conversion from a phase reference torque to a flux linkage, carries out the real-time feed-forward compensation of the flux linkage based on the estimated torque information, so that accurate flux linkage information is obtained, flux linkage control of the SRM is realized, torque pulsation is suppressed, and the method is small in calculation amount; the constructed neural network torque estimation model has an excitation function capable of reflecting an SRM torque change rule, and preprocessing the input of the neural network to realize estimation of the instantaneous torque; and the system can form an embedded system, instantaneous torque estimation is realized through a neural network torque estimation model, conversion from phase reference torque to flux linkage and flux linkage feed-forward compensation are realized through a dynamic RBF neural network torque-flux linkage model, flux linkage control and torque pulsation suppression of the SRM are realized, and online control of the switched reluctance motor is facilitated.

Description

technical field [0001] The invention relates to the technical field of switched reluctance motors, in particular to a flux linkage-based torque ripple suppression control system and method for switched reluctance motors. Background technique [0002] In recent years, the switched reluctance motor (Switched Reluctance Motor, SRM) has the characteristics of simple structure, low manufacturing cost, high system reliability and wide speed range due to the fact that the rotor has no winding and permanent magnets, and is only made of laminated silicon steel sheets. , becoming the first choice for driving devices in new energy vehicles, aerospace and other fields. However, due to the strong coupling and strong nonlinearity caused by the SRM double salient pole structure, highly saturated magnetic circuit, eddy current and hysteresis effects, it is difficult to establish an accurate mathematical model, so that the SRM generates a large torque in low-speed operation Pulsation seriou...

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Application Information

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IPC IPC(8): H02P25/098H02P23/00
CPCH02P25/098H02P23/0018Y02T10/64
Inventor 党选举黄佳张超伍锡如张向文李晓原翰玫
Owner GUILIN UNIV OF ELECTRONIC TECH
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