Analysis of hysteresis current control techniques for three phase PWM rectifiers

Pulse Width Modulated (PWM) Rectifiers are widely being used as the active front end converters for various applications demanding ac-dc power conversion. These rectifiers are capable of delivering regulated dc supply while maintaining high quality of source current waveform by reducing the input current harmonics and obtaining near unity power factor. This paper presents a comparative study of three phase voltage source PWM boost type rectifier employing different types of hysteresis controllers namely constant hysteresis band, adaptive hysteresis band, simplified adaptive and sinusoidal hysteresis band controllers for the input current control. The performance of these rectifiers is analyzed theoretically and verified using simulation.