Controllable Current and Voltage Power sources using FPGA

This paper deals with the development and design of digitally controllable, three-phase current and voltage power sources. The main, digitally controlled parameters of the power source are frequency, phase-shift and amplitudes of two separate sine-wave systems. Possibilities and means of implementation are discussed and a verified solution is described. The reason why this development was done is the lack of power sources on the market. The three-phase voltage and the tree-phase current systems are isolated by power transformers. Among many possibilities of voltage and current control, the method based on direct digital synthesis was selected. Control circuits of the power sources are described in VHDL and implemented in an FPGA device.