基于PIR调节器并网逆变器电流谐波抑制策略

摘要

Grid-current of the grid-connected inverter will be distorted while grid voltage contains harmonic components.Considering this situation,this paper established the grid-connected inverter model and a PIR control method was adopted to suppress the distorted current.The given method was analysed theoretically with matlab/simulink.At last,the effectiveness of this control strategy was proved under a 2kW grid-connected inverter experiment platform.%针对电网电压发生畸变并含有5次、7次谐波电压时，并网逆变器的并网电流就会产生相应的谐波脉动情况，建立了并网逆变器模型，采用了比例－积分－谐振（PIR）控制方法抑制逆变器并网电流谐波。通过Matlab／Simulink仿真理论分析了方法的正确性，最后通过2 kW并网逆变器试验平台验证了理论分析的有效性。