Design of communication-modulation unit in PEBB

Power electric building blocks (PEBB) simplifies the design of three level inverter, the new system is high-integrated and high-standard. A three level communication-modulation power electric unit including a high-speed communications network base on power electronic high-speed communication network(PES-net) protocol and a three level SVPWM modulator, all the system is designed and realized on FPGA. By integrating the three level SVPWM modulator in this unit the communication bandwidth demand is effectively reduced and the master controller's CPU resources can be released. In order to verify this design, an experiment platform based on SEMIKRON three level power unit is constructed in this paper. Three experiments validated the unit's communication and modulation function. Our unit works right in distributed system and the newly-designed fiber auxiliary network ensures a 5ns delay between each module.