Feedback control strategy for matrix rectifier

This Paper Analysis the matrix rectifier topology and the current space vector modulation(SVM) algorithm of matrix rectifier under balanced three-phase input voltage condition, According to the imbalanced three-phase input voltage and voltage drop conditions will do a effort to the output DC voltage, adopted a feedback control strategy based on current space vector modulation(SVM) algorithm. Through testing the output voltage value and compare to the target voltage, and then using PI control to dynamically adjust the modulation factor to ensure that the average output voltage equal to the target value, while suppressing the ripple. A practical simulation model of matrix rectifier was built up with Matlab/Simulink and simulated under the condition of balanced three-phase input voltage, imbalanced three-phase input voltage and drop voltage conditions. The simulation results show the correctness and effectiveness of the control strategy.