摘要
多谐振PR控制可以抑制特定高次谐波的分量,而当谐波补偿次数较高时易导致系统不稳定。为解决上述问题,提出了一种多谐振控制器与相位补偿器相结合控制策略,系统的相位裕量由原来的26.2°增加到44.3°,提高了系统的稳定性;同时对于LCL型滤波器存在谐振尖峰的问题,设计了不需要额外传感器的公共连接点(PCC)电压反馈有源阻尼。Matlab/Simulink仿真结果验证了改进的多谐振PR控制和PCC电压有源阻尼的正确性和有效性。
Multi-resonance PR control can suppress the components of specific high-order harmonics,but when the harmonic compensation order is high,it is easy to cause system instability. In order to solve this problem,a control strategy combining multi-resonance controller and phase compensator is proposed. The phase margin of the system is changed from 26.2 degrees to 44.3degrees,which improves the stability of the system. In addition,for the problem of resonant peaks in the LCL type filter,an active damping of the point of common conection(PCC)voltage feedback that does not require additional sensors is designed. The Matlab/Simulink simulation results verify the correctness and effectiveness of the improved multi-resonance PR control and PCC voltage active damping.
作者
高文豪
陈荣
阚加荣
王涛
GAO Wenhao;CHEN Rong;KAN Jiarong;WANG Tao(Yancheng Institute of Technology,Yancheng 224051)
出处
《计算机与数字工程》
2022年第9期2119-2125,共7页
Computer & Digital Engineering
基金
国家自然科学基金项目(编号:51577164)资助。
