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An improved direct power control (DPC) is proposed for a three-phase voltage-source rectifier based on fuzzy sliding mode. It introduces the sliding mode controller (SMC) to enhance the disturbance rejection ability of the outer dc voltage loop. To ensure the stability of SMC, a fuzzy-based switching state controller is developed for the inner power loop, with which the switching states can be provided...
In order to alleviate the problems, such as the periodic fluctuations of reactive power, the poor quality of ac current and the long steady-state response time, caused by the traditional direct power control(DPC) in three-phase voltage source (Pulse Width Modulation)PWM rectifier, a novel DPC strategy of double hysteresis comparator bands and multiple switching tables (DM-DPC) is put forward in this...
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