Winding segmented permanent magnet linear synchronous motor fault-tolerant switching control system and method

Abstract

The invention discloses a fault tolerance switching control system and method of a winding segmentation type permanent magnet linear synchronous motor. The fault tolerance switching control system of the winding segmentation type permanent magnet linear synchronous motor comprises a speed setting module, a V curve generation module, a modulation driving module, a maximum thrust tracking module, a power angle detection module, a winding switching fault detection and diagnosis module and a winding switching fault tolerance control module. When a transient state of the system is not stable, the winding switching fault tolerance control module controls the winding segmentation type permanent magnet linear synchronous motor to stop operating and trigger a braking system; and when the transient state of the system is stable, the winding switching fault tolerance control module receives a switching fault signal output by the winding switching fault detection and diagnosis module, and a V fault tolerance control strategy is formulated according to an operation speed of the winding segmentation type permanent magnet linear synchronous motor. With the adoption of the fault tolerance switching control system and method, vibration and stepping-out problems caused by winding switching faults can be effectively solved, and stable operation of the winding segmentation type permanent magnet linear synchronous motor is ensured.

Description

technical field [0001] The invention relates to the technical field of winding segmented permanent magnet linear synchronous motors with vertical motion, in particular to a fault-tolerant switching control system and method for winding segmented permanent magnet linear synchronous motors. Background technique [0002] The permanent magnet linear synchronous motor (Permanent Magnet Linear Synchronous Motor, PMLSM) and its servo system have attracted more and more attention due to the advantages of fast response speed, high positioning accuracy, and unlimited travel. , Cordless mine hoist, super high-rise elevator, electromagnetic aircraft ejection and other fields have very great application prospects. [0003] In long-distance running occasions, permanent magnet linear synchronous motors usually use armature windings as stators and permanent magnets as movers, that is, long primary short secondary PMLSM. In order to reduce the current level of each phase of the armature win...

AI Technical Summary

Problems solved by technology

[0004] The segmented structure of the armature winding can simplify installation, reduce energy consumption, and improve motor efficiency, but it also has the defects of complex structure, many signals, and poor reliability

If the mover position signal is lost or the winding switching actuator is faulty, it will cause the winding switching failure of the unit motor, causing abnormal thrust fluctuations

For vertically moving segmented permanent magnet linear synchronous motors, abnormal thrust fluctuations caused by switching faults in the stator windings may cause motor out-of-step, leading to major safety accidents and directly affecting the stable operation of the segmented permanent magnet linear synchronous motors

The existing research results mainly focus on the analysis, design and drive control of the segmented permanent magnet linear synchronous motor, which cannot solve the serious consequences of the stator winding switching failure.

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