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Cooperative chopped wave starting circuit and method for switched reluctance motor

A switched reluctance motor and starting circuit technology, applied in the direction of the starting device, etc., to achieve the effect of simple and practical circuit principle and structure, reduce the phenomenon of wrong closing and opening of the switch tube, and reduce the effect of torque ripple

Inactive Publication Date: 2013-09-04
SOUTHEAST UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005]Technical problem: The purpose of this invention is to solve the problem of precise control of the current during the starting process of the existing motor

Method used

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  • Cooperative chopped wave starting circuit and method for switched reluctance motor
  • Cooperative chopped wave starting circuit and method for switched reluctance motor
  • Cooperative chopped wave starting circuit and method for switched reluctance motor

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Embodiment Construction

[0029] The present invention will be described below with reference to the accompanying drawings.

[0030] The invention discloses a method and circuit for switched reluctance motor software and hardware cooperative chopping start, which can realize the current control of the switched reluctance motor at the moment of starting and low-speed operation, thereby providing important information for the reluctance motor speed control system. efficiency and security. The invention has the advantages of simple method and circuit, easy realization, stable operation, low cost and the like.

[0031] see figure 1 The switching reluctance motor cooperative chopper starting circuit includes a microprocessor 1, a three-input AND gate 2, a power converter 3, a current sampling circuit 4, an amplification circuit 5, a digital-to-analog conversion circuit 6, and a hysteresis comparison circuit 7.

[0032] like figure 1 Shown is a block diagram of the application system after the circuit of ...

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Abstract

The invention discloses a cooperative chopped wave starting circuit for a switched reluctance motor. One output end of a power converter (3) is connected with the switched reluctance motor, and the other output end of the power converter (3) is connected with the input end of a current sampling circuit (4) and outputs a phase current sampling signal to the current sampling circuit (4); the outputend of the current sampling circuit (4) is connected with the input end of an amplifying circuit (5); the current sampling circuit (4) amplifies the phase current sampling signal through the amplifying circuit (5); and the output end of the amplifying circuit (5) is respectively connected with the input end of a microprocessor (1) and the input end of a hysteresis comparison circuit (7). The circuit can control current when the switched reluctance motor is started instantaneously and operated at a low speed so as to provide important efficiency and safety guarantee for a reluctance motor speed regulation control system; and the invention has the advantages that: the circuit and the method are simple, the current is controlled flexibly and accurately, cost is low, and the like.

Description

technical field [0001] The invention relates to a switched reluctance motor cooperative chopper starting circuit and method, which solves the requirement for precise control of current control during the starting process of the switched reluctance motor, and combines software and hardware cooperative chopper control to give full play to their respective advantages . It belongs to the field of motor control. Background technique [0002] The switched reluctance motor has simple and firm structure, reliable operation and high efficiency. Compared with the traditional AC and DC speed control system, the switched reluctance motor drive system composed of it has many advantages, such as: large starting torque, wide speed range, Flexible control, convenient to realize four-quadrant operation, strong regenerative braking ability, high efficiency in a wide range of speed and power, which is conducive to energy saving and consumption reduction; it can work at extremely high speed; i...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02P6/20
Inventor 钟锐秦明亮刘海龙刁龙孙伟锋陆生礼时龙兴
Owner SOUTHEAST UNIV
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