基于虚拟导纳的三相电压不平衡补偿技术研究

Research on Three-Phase Balancing based on Virtual Admittance in Microgrid by Distributed Generation Systems

针对三相分布式发电系统存在的电压不平衡问题,采用了一种动态调节虚拟导纳的补偿方 法,利用系统本身的剩余容量,利用逆变器输出可变负序电流来是实现电能质量补偿的功能.并在 Matlab/Simulmk中进行建模仿真,结果验证了该方法的正确性和有效性.

In terms of voltage unbalance in three-phase distributed generation systems, a method based on virtual admittance is dealed with for active power quality compensation. By the proposed method, the inverters output negative sequence currents to suppress the voltage imbalance within their surplus capacities. Operating characteristics and its effectiveness are confirmed by some simulation results.