Comparative Analysis of PWM Based Front End Rectifier with Different Modulation Techniques

The rectifier basically converts AC input to the DC output. In general different types of rectifier topologies are available like diode bridge rectifier, thyristor controlled rectifier, PWM based rectifier etc. This paper discusses front end PWM rectifier, its working principle and generation of gate pulses using two different modulation techniques namely sine pulse width modulation (SPWM) and space vector pulse width modulation (SVPWM). This paper also features the description of 3-level front end PWM based rectifier and generation of 3-level space vector PWM. Simulation models of two level SPWM, two level SVPWM and three level SVPWM based front end rectifier are developed and simulated in MATLAB / SIMULINK platform and a comparative analysis is presented.