【摘要】 目前,通用数字控制功率变换器的控制结构尚未充分利用数字通讯的优点。分布式数字控制网络结构是复杂中大功率电力电子系统集成的方向。该文从分析基本环状网络结构出发,提出了一种基于电力电子模块(PEBB)的高速智能通讯网络拓扑,其最大优点是每个通讯单元的数据发送源可以根据该单元当前状态选择。该通讯网络可大大提高数据在网络上的传输速度,减小传输延时,可更好的解决电力电子高速通讯中由环形网络本身特性所带来的同步问题,也对降低光纤通讯网络的成本起到极大促进作用。通过实验,文章最后给出了每两个从节点间数据传输延时的时间,可以得出该控制系统对于有较高开关频率要求的电力电子变换器同样适用。更多还原

【Abstract】 Nowadays,the universal control structure for digital control power converter does not fully utilize the merit of digital communication.Distributed communication structure with digital control is the developing trend of system integration with special power electronic application that features high system complexity and high power stage.Based on the analysis of the ring type communication structure,a type of intelligent communication structure with high speed for PEBB(power electronic building block)is presented in this paper.The prominent merit of the very structure is that data source for sending of every communication unit can be determined by its current state.Trasmitting speed can be greatly improved by adopting the very structure,correspondingly,propagation delay can be reduced,that synchronous problem resulted by ring type structure adopted in power electronic high speed communication can be alleviated,moreover,the very structure greatly contributes to reduction of cost for fiber net.Finally,propagation delay between two adjacent nodes is presented by experimental result.According to capacity calculation,the very control system adapts to power electronic converter with high switching frequency as well.更多还原