一种交直流电能路由器的并网控制策略研究

Research on Grid-Connected Control Strategy of an AC and DC Power Router

摘要: 电能路由器运用于能源互联网中增加了供电的多样性，还解决功率多向流动的问题。本文针对家庭用户的实际需求设计了一种小容量的单相交直流电能路由器，交直流系统通过双向DC/AC变流器连接保证负载可靠供电。由于分布式电源出力受天气影响易波动，本文提出改进的滑动平均算法的电能路由器并网控制策略，该策略可求得分布式电源的出力指令功率，通过控制分布式电源出力追踪指令功率输出，可得到平滑的并网点功率，减少波动。最后，通过仿真验证所提出并网控制方法的正确性。

Abstract: The application of power routers in the energy Internet increases the diversity of power supply, and also solves the problem of multi-directional power flow. In this paper, a small-capacity single-phase AC and DC power router is designed according to the actual needs of home users. The AC and DC systems are connected by bidirectional DC/AC converters to ensure reliable power supply to the load. Since the output of distributed power is easily fluctuated by the weather, this paper proposes an improved sliding average algorithm for the grid-connected control strategy of power routers, which can obtain the output command power of distributed power. By controlling the distributed power output to track the command power, a smooth grid-connected power can be obtained and fluctuations can be reduced. Finally, the correctness of the proposed grid-connected control method is verified by simulation.