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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...
To reduce the flux and torque ripples, the paper modifies the synthesizing technique, proposes ldquo24 vectorsrdquo method and ldquo24 vectors + altering modulation indexrdquo method, which can be implemented to achieve favorable stator flux linkage and torque control performance in three-level induction motor direct torque control (DTC) system. The improvement of motor performance by proposed schemes...
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