一种T型三电平功率转换系统的控制策略

A T-type Three-level Power Conversion System Control Strategy

研究了一种基于T型三电平电路拓扑结构的功率转换系统控制策略,并以磷酸铁锂电池为储能载体,构建了一套100 kW全数字控制实验样机,可与电网进行能量四象限交互,全面验证控制策略的可行性。实验结果表明,该功率转换系统具有输入功率因数可控,输出交直流电压稳定,谐波污染小等优点,满足电池储能系统的相关技术要求。

A power conversion system control strategy based on T-type three-level circuit topology is studied, with lithium iron phosphate battery as the energy storage carrier, a 100 kW full digital control experimental prototype is constructed, which can interact with the power grid in the four-quadrant energy to fully verify the feasibility of the control strategy. Experimental results show that the power conversion system has the advantages of controllable input power factor, stable AC/DC voltage output, and less harmonic pollution, meeting the relevant technical requirements of battery energy storage systems.