基于自抗干扰控制的逆变器母线电压稳定性研究  

Research on Inverter Bus Voltage Stability Based on Active Disturbance Rejection Control

作　　者：王羽 朱婷 Yu Wang;Ting Zhu(School of Optical-Electrical and Computer Engineering,University of Shanghai for Science and Technology,Shanghai)

机构地区：[1]上海理工大学光电信息与计算机工程学院,上海

出　　处：《建模与仿真》2025年第3期636-651,共16页Modeling and Simulation

摘　　要：针对变流器的直流母线电压波动问题,提出了一种基于线性自抗干扰控制(LADRC)与积分滑膜控制的复合控制策略。通过引入改进的扰动观测器及饱和函数滑模趋近律,解决了传统LADRC中由于观测器增益过大导致的抗噪声能力下降等问题。通过结合LADRC的扰动补偿能力和滑膜控制的强鲁棒性,提高了系统在外界扰动和负载突变条件下的动态响应速度和稳态精度。通过仿真实验验证,与传统控制方法相比,所提出的控制策略显著提升了系统的电压稳定性和抗干扰能力,同时显著降低并网电流的总谐波失真。To address the issue of DC bus voltage fluctuations in inverters,a composite control strategy based on Linear Active Disturbance Rejection Control(LADRC)and Integral Sliding Mode Control(ISMC)is proposed.By introducing an improved disturbance observer and a saturation function based slid-ing mode reaching law,the problems associated with excessive observer gain in traditional LADRC,such as reduced noise immunity,are effectively resolved.The integration of LADRC’s disturbance compensation capability with the robust performance of sliding mode control enhances the sys-tem’s dynamic response speed and steady-state accuracy under external disturbances and sudden load changes.Simulation experiments demonstrate that,compared with traditional control meth-ods,the proposed strategy significantly improves voltage stability,enhances disturbance rejection ability,and substantially reduces the total harmonic distortion of grid current.

关 键 词：变流器 线性自抗干扰 滑膜控制 双闭环控制 

分 类 号：TM46[电气工程—电器]