Improved discrete sliding mode control strategy for pulse-width modulation recti er

Authors : JING CAO, CHAONAN TONG

Pages : 184-193

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Publication Date : 0000-00-00

Article Type : Research Paper

Abstract :An improved sliding mode control utilizing repetitive control insert ignore into journalissuearticles values(ISMRC); is proposed for a three-phase pulse- width modulation insert ignore into journalissuearticles values(PWM); rectifier. The proposed controller integrates the advantages of both sliding mode control insert ignore into journalissuearticles values(SMC); and repetitive control insert ignore into journalissuearticles values(RC); by implementing a structure that embeds an RC controller into the equivalent control branch of an SMC controller. Both a simulation and an experiment are conducted to compare the proposed ISMRC controller with a conventional SMC controller. It is demonstrated that the fifth harmonic distortion of the current of the PWM rectifier system is controlled at 3.3%, the power factor is close to the unit, and the effect on the DC bus voltage is effectively restrained. Therefore, the proposed control strategy can improve both the steady-state performance and the dynamic transient response of a PWM rectifier control system effectively, as well as increase the robustness of the system to load disturbances and parametric uncertainties.
Keywords : Pulse width modulation rectifier, repetitive control, sliding mode control