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The design of the voltage loop and current loop of three-phase high power factor PWM rectifier was introduced, the strategy of dual-mode control that combine fuzzy control to PI regulator is proposed, which use fuzzy controller to obtain quick dynamic response when deviation is in small range and adopt PI regulator to realize no static error when deviation is in long range, improving the control accuracy...
In this paper, the mathematical model and work principle of the three-phase voltage source pulse width modulation (PWM) rectifier (VSR) are analyzed. Then, the control strategies without feed-forward and with feed-forward are compared, which based on the power factor, the total harmonic distortion (THD) and DC voltage stability. Voltage-Oriented Control (VOC) and direct current control method were...
Model-based predictive current control scheme proposed in the paper is a constant frequency unipolar PWM control algorithm that achieves a symmetrical zero-centered current error in every switching cycle. This method is intended to choose the suitable switching instants based on assumed values for the circuit model parameters rather than the real-time measurement of the actual parameters, no feedback...
PWM rectifier control system is designed, where predictive current control in two static reference frames is as current control method, voltage space vector pulse width modulation is pulse width modulation method, and traditional PI regulator is adopted as DC voltage control. This method has an advantage of quick response of hysteresis current control, the frequency of apparatus is fixed, and control...
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