하이브리드통신규약에 따른 직접형 AC/AC 전력변환시스템의 PWM 발생

A Direct AC/AC power conversion system requires many more semiconductor switching devices when compared to a conventional indirect AC/AC power converter. In general, microcontrollers can support conventional power converters, but do not have the 18 PWM channels and 4 step switching commutation algorithm for a matrix [direct] converter. Therefore a DSP or microcontroller has to be linked to an FPGA for these converter topologies. In this paper a hybrid communication protocol is proposed to allow the correct and timely transfer of switching times between a DSP and an FPGA. Conventional communication protocols, such as serial and parallel, each have advantages and disadvantages. The proposed hybrid communication protocol has been developed with the combined advantages of serial and parallel communication protocols. The proposed communication protocol has been adopted for use with a matrix converter and its effectiveness is verified through simulations and experiments results.