Minimizing of the Communication Overhead in Distributed Control Computer of Power System Using Correct Partition and DMA

摘要

Design problems of the distributed control computer of power systems are considered with a special emphasis on system, hardware and software architecture of the local computer network of a traction vehicle. The local computer network based on essential communication support of DMA transfer to unburden application host processor from network overhead is presented. The communication overhead on higher interrupt levels of CPU (which are important to be available to process control tasks) is minimized to several percent of CPU throughput. All network activities are easily processed by the host (application) processor, no additional communication coprocessor is required. Communication APIs are simple and user friendly.