Space Vector Modulation Based ZSCC Reduction between Parallel Inverters and Motor Control

Abstract: The Space vector Modulation (SVM) is most appropriate modulation technique used for power converters/inverters among the various Pulse Width Modulation (PWM) techniques. SVM plays major role in the reduction of Total Harmonic Distortion (THD) due to rapid switching inherent and it is well suitable for motor applications rather than other PWM techniques. Harmonics is one of the major drawbacks in most of the application. SVM has the major advantage is that complementary operation of switches takes place in a leg that is only one switching device is made to turn on at a particular period. The proposed model has the effect of eliminating the lower order harmonics using SVM technique and the effect of Zero Sequence Circulating Current (ZSCC) when inverters are connected in parallel. MATLAB/Simulink is used develop the model. Results that were obtained from the simulation confirmed the performance and effectiveness of proposed method.

Keywords: Space Vector Modulation, Inverters, Harmonic elimination, Pulse Width Modulation, Zero Sequence Circulating Current