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A Control Method for Low Torque Ripple of Switched Reluctance Motor

A switched reluctance motor, torque ripple technology, applied in torque ripple control, AC motor control, control system and other directions, can solve problems such as large torque drop, and achieve the effect of suppressing torque ripple and reducing motor noise

Active Publication Date: 2019-01-15
YANGZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Single-phase excitation will produce a large torque drop when commutating, and two-phase excitation will produce a large torque impact. Although single-phase and double-phase hybrid excitation combine single-phase and two-phase The problem of large torque ripple cannot be suppressed, so the research on the control of motor rotation ripple is very important

Method used

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  • A Control Method for Low Torque Ripple of Switched Reluctance Motor
  • A Control Method for Low Torque Ripple of Switched Reluctance Motor
  • A Control Method for Low Torque Ripple of Switched Reluctance Motor

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Embodiment Construction

[0024] Such as Figure 1-9 As mentioned above, the present invention provides a method for controlling low torque ripple of switched reluctance motors, which specifically includes the following steps (such as figure 1 shown):

[0025] Step 1) Detect the speed signal of the motor, and send it and the given speed reference value to the speed regulator for calculation to obtain the current reference value I*;

[0026] Step 2) Detect the torque ripple signal △T of the motor, and send it to the torque ripple regulator together with the given torque ripple signal reference value for calculation, and obtain the excitation phase overlap angle △θ and the excitation phase current reduction coefficient c;

[0027] Step 3) detecting the position of the motor;

[0028] Step 4) Send the current reference value I*, the excitation phase overlap angle △θ, the excitation phase current reduction coefficient c and the detected motor position into the excitation phase selector to obtain the exc...

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Abstract

The invention discloses a method for controlling low torque ripple of a switched reluctance motor in the technical field of motor control. 1) Detecting the rotational speed signal of the motor, and sending it and a given rotational speed reference value into a speed regulator for calculation, Obtain the current reference value I*; 2) Detect the torque ripple signal △T of the motor, and send it to the torque ripple regulator together with the given torque ripple signal reference value for calculation, and obtain the excitation phase overlap angle △ θ and excitation phase current reduction factor c (0

Description

technical field [0001] The invention relates to a control method for a motor, in particular to a control method for low torque ripple of a switched reluctance motor. Background technique [0002] The switched reluctance motor has a simple structure and can work in harsh environments for a long time; each phase is powered independently, which can constitute a highly reliable system; high starting torque and low starting current; it can meet the requirements of the motor through the unified and coordinated design of the machine and electricity. Various special requirements and many other advantages make the switched reluctance motor have a good development and application. However, due to the double salient pole structure of the switched reluctance motor and the particularity of each phase working independently, the torque ripple of the switched reluctance motor is large, and there is a serious noise problem, which limits the wide application of the switched reluctance motor. ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02P6/10H02P25/098
CPCH02P6/10
Inventor 蒋伟陆晶颖
Owner YANGZHOU UNIV