【摘要】 为了提高低输入电压逆变器的稳定性以及电能质量，研究双闭环入网电流控制方法。构建低输入电压逆变器数学模型与电压电流微分方程，采用阻抗分析方法分析低输入电压逆变器的稳定性，设定低输入电压逆变器稳定条件；根据分析结果将LCL型滤波器引入电流控制中，设计LCL型滤波器的电感、谐波电容、谐振频率、谐波衰减以及阻尼电阻，通过LCL型滤波器完成低电流控制。仿真结果表明，所提方法的电流跟踪精度高、鲁棒性高、抗谐波能力强，验证了该方法的有效性。更多还原

【Abstract】 In order to improve the stability and power quality of low input voltage inverter, the double closed-loop network current control method is studied. The mathematical model and voltage current differential equation of low input voltage inverter are constructed, the stability of low input voltage inverter is analyzed by impedance analysis method, and the stability conditions of low input voltage inverter are set; According to the analysis results, the LCL filter is introduced into the current control, and the inductance, harmonic capacitor, resonance frequency, harmonic attenuation and damping resistance of the LCL filter are designed, and the low current control is completed through the LCL filter. The simulation results show that the proposed method has high current tracking accuracy, high robustness and strong anti-harmonic ability, which verifies the effectiveness of the method.更多还原