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A Deadbeat Direct Torque Control Method for Switched Reluctance Motor

A direct torque control, switched reluctance motor technology, used in motor generator control, AC motor control, electronic commutation motor control, etc., can solve problems such as errors, torque ripple is not minimized, etc., to improve accuracy , Good mutation response ability, reducing torque ripple and loss

Active Publication Date: 2021-09-07
DALIAN MARITIME UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although torque is used as a direct control variable in DTC, the torque ripple is not minimized, and since DTC uses Bang-Bang control, there is an inevitable error

Method used

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  • A Deadbeat Direct Torque Control Method for Switched Reluctance Motor
  • A Deadbeat Direct Torque Control Method for Switched Reluctance Motor
  • A Deadbeat Direct Torque Control Method for Switched Reluctance Motor

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Embodiment Construction

[0056] In order to enable those skilled in the art to better understand the solutions of the present invention, the following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only It is an embodiment of a part of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present invention.

[0057] It should be noted that the terms "first" and "second" in the description and claims of the present invention and the above drawings are used to distinguish similar objects, but not necessarily used to describe a specific sequence or sequence. It is to be understood that the data so used are interchangeable under appropriate ...

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Abstract

The invention provides a deadbeat direct torque control method of a switched reluctance motor, comprising the following steps: calculating the position angle of the rotor through a photoelectric encoder, and calculating the flux linkage and current of the motor in a rotating coordinate system; The error with the feedback torque and the given flux linkage and the three-phase voltage and current in the stator coordinate system; calculate the space voltage vector in the rotating coordinate system for controlling the operation of the motor in the next beat; obtain six pulse signals to control the motor. The present invention directly controls the torque and flux linkage by controlling the two-phase reference voltage in the rotating reference coordinate system, and controls the flux linkage and torque within one control cycle, so that the torque ripple is smaller and the flux linkage is also significantly reduced .

Description

technical field [0001] The invention relates to a torque control method of a switched reluctance motor, in particular to a stepless direct torque control method of a switched reluctance motor. Background technique [0002] Switched reluctance motor (SRM) was first proposed in the 1940s, but due to technical limitations at that time, it was not well developed. With the development of power electronic devices and the advantages of simple structure, low cost, good fault tolerance and wide speed range of the switched reluctance motor itself, it has attracted widespread attention from academia and industry, and a large number of researches have also been carried out. . Various specifications of switched reluctance motor speed control systems have been put into the market one after another, and the products cover electric vehicles, household appliances and other fields, which shows the broad application prospects of switched reluctance motors. However, the doubly salient pole st...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02P25/08H02P25/098H02P21/00H02P21/05
CPCH02P21/0003H02P21/05H02P25/08H02P25/098
Inventor 许爱德张文韩乐乐任萍商超亿
Owner DALIAN MARITIME UNIVERSITY
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