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Power electronic transformer acts as a key component of the future automation in smart grid, which is the replacement of conventional distribution transformers by a power transformer. In this paper , the optimum design of a power electronic transformer(PET) based on topology of Modular multilevel converter (M2C). M2C is an emerging and highly attractive topology intended for high- or medium-voltage...
Many methods for control of three-phase boost-type PWM rectifier under unbalanced input voltage conditions have been presented in the last two decades. Among these methods, the input-output-power-control (IOPC) method seems the most desirable one offering ripple-free dc bus voltage, low-distortion input currents and average unity power factor on the grid side. Most of the IOPC schemes adopt rotating...
In the last decade, many methods for control of three-phase boost-type pulsewidth modulation (PWM) rectifier under unbalanced input voltage conditions have been studied and presented. These methods use the sequential components of input voltages, pole voltages, and input currents of the rectifier to analyze and control the instantaneous powers, of which dual (positive-sequence and negative-sequence...
This paper presents a novel control method for PWM boost rectifier based on instantaneous power. Unlike most of the existing control strategies implemented in synchronous or p-q (active-reactive power) frame, the proposed method can provide unity power factor on the AC side in stationary frame. Rotating transformation and phase detection are eliminated, offering a very simple solution. Based on the...
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