High speed and optic-isolated communication unit for sampling system in PEBB

JIN Xiao-guang, ZHANG De-hua, LV Zheng-yu
（College of Electrical Engineering, Zhejiang University, Hangzhou 310027, China）

Abstract: In order to reduce the sampling interruption induced by high dI/dt and dV/dt in the system, a field programmable gate array(FPGA)-based and optic-isolated communication unit was proposed, and the design philosophy and highlights of this method were described in detail. In the unit, the sampled values can be transmitted and received in digital mode. It was point out that, in complicate power electronic system, application of this unit has practical value for their excellent performance in insulation and transient characteristics. Finally, waveforms and propagation delay between two modes were presented by experimental result. According to capacity calculation, the feasibility of the system design was proved.
Key words: power electronic building block(PEBB); sampling; optic-isolated; communication; field programmable gate array(FPGA)