一种实用的大容量电力电子系统高速光纤环网拓扑及其协议

基于串行光纤通信技术的分布式控制是大容量电力电子变流系统的一个发展方向。该文针对现有电力电子变流系统分布式控制方案存在的一些缺陷,提出一种软件控制可切换数据通道的高速光纤环形网络拓扑结构,并制定了简单可行的通信协议,简化了通信控制的软件编程和测试难度,提高了同步精度,同时也较大程度地减小了整个高速光纤环形控制网络的传输延时,扩展了基于高速光纤环网通信拓扑的分布式控制方案在复杂高性能电力电子变流系统中的应用范围。最后,该文给出了相应的数据传输、数据源切换以及反馈数据上传等方面的实验结果,验证了该种网络拓扑及协议的正确性、有效性和可行性。

Topology and Protocol of Practical High-speed Fiber Ring Net for Large-capacity Power Electronic Systems

The distributed control based on the serial optical fiber communication technology is an important direction of development in the large-capacity power electronic converter system.As for the disadvantages of the existing distributed control systems,this paper proposed a high-speed fiber ring net topology of switching the data channel by software control and presented a simple and feasible communication protocol.Thus,the software programming and testing in communication control could be simplified and the synchronous accuracy could be improved,and the whole transmission delay of the high-speed fiber ring net could be reduced,which expands the application range of distributed control system based on the high-speed fiber ring net communication topology in the complex high-performance power electronic converter systems.Experimental results of corresponding data transmitting,data source switching and feedback data uploading tests verify the correctness,validity and feasibility of the net topology and protocol.