A family of PWM converters for three phase AC power conditioning

Historically, three-phase AC power conditioning has been realized using tap-changing/autotransformers or using thyristor phase controllers. These devices are either bulky and slow and/or suffer from poor waveform quality. With growing concerns of power quality prompted by widespread application of sensitive loads, it is felt that there is a need for a new generation of high performance power converters for three-phase AC power conditioning. This paper presents a means for realizing AC-AC power converters using pulse width modulation which can be utilized for power line conditioning.