Harmonics analysis of Sinusoidal PWM and Third harmonic injection PWM controlled Voltage source inverter
Mohd Junaid Mansoori, Mr. Prakash Bahrani
SPWM, THD, Voltage source inverter, carrier frequency, third harmonic injection PWM.
The sinusoidal Pulse Width Modulation (SPWM) technique is one of the most popular PWM technique for controlling output and harmonic reduction of inverter. Recent developments in power electronics and semiconductor technology have lead use of higher carrier frequency in PWM modulation techniques. In the presented work voltage source inverter is connected to the RL load with LC filter. Two PWM techniques have been used to operate voltage source inverter are sinusoidal(SPWM) PWM and third harmonic injection(THIPWM) PWM. The simulation result shows THIPWM has better performance when compared to SPWM Both techniques are shown with MATLAB simulink and compared in terms of THD.