摘要
针对传统PI控制存在稳态误差和抗干扰能力有限的缺点,在PR控制的基础上,提出基于准PR控制的三相LCL型并网逆变器控制策略。在保持控制器高增益的同时提高抗干扰能力。并详细分析了准PR控制器参数对控制器性能的影响;引入电容电流反馈的有源阻尼方法抑制LCL产生的谐振尖峰。最后本文利用MATLAB/simulink实验仿真验证了该控制策略的有效性。
Aiming at the shortcomings of traditional PI control,such as the steady state error and the limited anti-interference ability,a control strategy of three-phase LCL grid connected inverter based on quasi PR control is proposed on the basis of PR control.Improved the anti-interference ability while maintaining the high gain of the controller.The influence of the quasi PR controller parameters on the controller performance is analyzed in detail.The active damping method with capacitive current feedback is introduced to suppress the resonant spike generated by the LCL filter.Finally,the effectiveness of the control strategy is verified by MATLAB/simulink simulation.
作者
阳喜
YANG Xi(College of Electrical Engineering,Guangxi University,Nanning 530004,China)
出处
《电气开关》
2018年第6期51-55,共5页
Electric Switchgear
