基于下垂控制的三电平逆变器并联技术仿真研究

Simulation research on parallel technology of three level inverter based on droop control

文章针对下垂控制技术进行分析,将下垂控制技术应用于三电平逆变器并联系统,对并联逆变器系统中频率偏差(有功环流)、幅值偏差(无功环流)特性进行了研究。最后通过仿真验证基于下垂控制策略的逆变器并联系统的运行效果,结果表明,下垂控制技术能较好地协调微电网中逆变器并联运行时的功率分配及电压稳定。

In view of the current research hotspot technology droop control technology analysis, based on droop control simplification and equivalence principle of understanding and the control system, the technology has been applied in three level inverter parallel system. The parallel inverter system frequency deviation, the active ring stream, amplitude deviation, the wattless circumfluence characteristic research. Finally the simulation verification based on droop control strategy of the inverter parallel system performance. The results show that can better coordinate micro grid inverter parallel operation of power distribution and voltage stability.