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...

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Problems solved by technology

At present, there is no literature report on the use of support vector machine

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