Internal-mode fault-tolerant control system and method for support vector machine of permanent-magnet synchronous linear motor

Abstract

The invention discloses an internal-mode fault-tolerant control system and method for a support vector machine of a permanent-magnet synchronous linear motor. The system includes a fault-tolerant controller, a first PI (Proportional Integral) regulator, a second PI regulator, a Park inverse transformation module, a Clark inverse transformation module, an inverter, a magnetic flux linkage observation and switch module, a position detection module, a speed detection module and a six-phase permanent-magnet synchronous linear motor, wherein the fault-tolerant controller includes a normal internal-mode controller and a faulted internal-mode controller; the normal internal-mode controller consists of a normal controller and a support vector machine with a normal nominal model; and the faulted internal-mode controller consists of a faulted controller and a support vector machine with a faulted nominal model. The method comprises the following steps: when the six-phase permanent-magnet synchronous linear motor is fault-free, the magnetic flux linkage observation and switch module selects the support vector machine with the normal nominal model and the normal controller; and when a single-phase open-circuit fault occurs in the six-phase permanent-magnet synchronous linear motor, the magnetic flux linkage observation and switch module selects the support vector machine with the faulted nominal model and the fault controller.

Description

technical field [0001] The invention relates to a six-phase permanent magnet synchronous linear motor, in particular to a fault-tolerant control system and method for a single-phase open-circuit failure of a stator winding of the six-phase permanent magnet synchronous linear motor, which can be used for high-reliability electric transmission. Background technique [0002] The six-phase permanent magnet synchronous linear motor has many advantages such as low voltage, high power, and small harmonic loss, and has a good application prospect, especially suitable for important fields such as warship and submarine propulsion, aerospace propulsion, electric vehicle drive, and electric locomotive traction. [0003] The number of stator phases of the six-phase permanent magnet synchronous linear motor is more than 3 phases. When the single-phase open circuit fault of the stator winding occurs, the fault-tolerant control strategy can be adopted, and the corresponding controller can be...

AI Technical Summary

Problems solved by technology

At present, there is no literature report on the use of support vector machine internal model control for six-phase permanent magnet synchronous linear motors

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