Control method for linear induction motor

A technology of linear induction motor and control method, which is applied to the control of other motors and the control field of linear induction motor, can solve the problems of not considering efficiency factors, staying in theoretical exploration, and complex control.

Active Publication Date: 2007-05-30
ZHUZHOU CSR TIMES ELECTRIC CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

But there are many efficiency factors that are not considered, such as vector control, etc., which are suitable for micro linear motor control
In addition, there are also many complex algorithms such

Method used

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  • Control method for linear induction motor
  • Control method for linear induction motor
  • Control method for linear induction motor

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Embodiment Construction

[0086] The present invention will be described in further detail below in conjunction with the accompanying drawings and specific embodiments.

[0087] 1 and 2, the control method of the linear induction motor of the present invention obtains the actual flux frequency and flux linkage amplitude of the primary flux linkage of the linear induction motor according to the input voltage of the inverter 4 to the linear induction motor 5, Then collect the real-time speed of the linear induction motor 5, obtain the frequency reference quantity and the amplitude reference quantity of the primary flux linkage of the linear induction motor through the real-time speed, and combine the shape of the primary flux linkage under the target state at the same time, determine the appropriate primary voltage space vector to make the actual The flux linkage amplitude and flux linkage frequency tend to the amplitude reference quantity and the frequency reference quantity respectively, and the control...

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Abstract

This invention discloses one line sensor motor control method, which gets line sensor motor initial magnetic linkage real value and linkage rate according to the input voltage of line sensor motor, wherein, it gets line sensor motor stator magnetic linkage range reference value and frequency value through collecting line sensor motor real speed; then it combines initial linkage aim shape to determine property motor initial voltage space vector and linkage frequency for the reference values.

Description

technical field [0001] The invention mainly relates to the field of linear induction motors, in particular to a control method of linear induction motors, but can also be used for the control of other motors. Background technique [0002] The basic principle of linear induction motor and the structure of its equivalent circuit are basically the same as those of rotary induction motor. But because of its many unique features, it is much more difficult to control than a rotating motor. This is mainly manifested in the following aspects: [0003] A: The influence of the edge effect. In particular, the dynamic longitudinal edge effect weakens the air gap flux linkage at medium and high speeds, resulting in a decrease in the excitation inductance of the motor, which greatly reduces the efficiency of the linear motor. And it is difficult to accurately predict the amount of flux linkage weakening, especially in real-time control systems. [0004] B: Variation of air gap size. ...

Claims

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Application Information

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IPC IPC(8): H02P21/00
CPCH02P25/06H02P21/08H02P25/062
Inventor 郭焕刘可安王坚
Owner ZHUZHOU CSR TIMES ELECTRIC CO LTD
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