A flexible 4kW - 3 Phase - 2 Switch PFC Power Rectifier for Supplying a Modern EDM Machine

Power Factor Corrected rectifiers are a new tendency in development of power supplies. In the last few years, a lot of R&D activities have led to a new category of products for one-phase applications. In this contribution, a new simplified topology is proposed for three-phase applications, using only two active switches, able to generate symmetrical currents in the line. The power and the control circuits have been developed on a single board device. This flexible power supply has been developed for the feeding of a modern EDM machine. The power supply is able to deliver a controllable output voltage.