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This paper introduces a new vector control strategy of three-phase PWM rectifier. Because input currents of PWM rectifier are cross coupling in d-q coordinates, hysteresis regulators are used to achieve approximate decoupling control. Absolute error of d-q currents is considered while building d-q switching functions. Suitable space voltage vector is selected base on a switching function table. To...
This paper presents a three-level rectifier with reduced number of power switches based on one-cycle control. Only six power switches with voltage rating of half DC-link are adopted in this multilevel rectifier. A nonlinear control method, one-cycle control, is used to control the rectifier. The controller is composed of some integrators with reset, flip-flops, comparators and linear components, which...
This paper presents a strategy of matrix converter driving three-phase brushless DC motor (BLDCM) with trapezoidal back electromotive force. The matrix converter is described as an equivalent circuit combining virtual rectifier stage and virtual inverter stage. Input current space vector modulation and 120deg conduction mode are employed in these two stages respectively. An important part of this...
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