并联有源滤波器终端滑模变结构控制策略研究
Research on Terminal Sliding Mode Variable Structure Control Strategy of Shunt Active Power Filter
摘要: 针对三相三线并联型有源电力滤波器谐波电流跟踪环节动态响应慢、鲁棒性差、跟踪精度不高的问题，提出了一种并联型有源电力滤波器指数型快速终端滑模变结构控制策略，解决了传统有源电力滤波器滑模控制器设计结构复杂及抖振问题。在分析数学模型的基础上，设计了指数型非线性滑动模态超曲面和控制率，证明滑模控制的可达性。该控制策略能够实现系统的全局渐近稳定性，并能使系统的状态变量在有限时间内快速收敛到平衡点，同时对系统的时变不确定部分也有较强的鲁棒性。仿真结果表明该控制策略动态响应速度更快，鲁棒性更强和控制精度更高。
Abstract: Aiming at the problems of slow dynamic response, poor robustness and low tracking accuracy of harmonic current tracking link of three-phase three-wire shunt active power filter, a sliding mode variable structure control strategy for exponential fast terminal of shunt active power filter is proposed, and the complex structure and chattering problem of the traditional active power filter sliding mode controller are solved. Based on the analysis of mathematical model, the exponential nonlinear sliding mode hypersurface and control rate are designed, proving the reachability of sliding mode control. The control strategy can achieve global asymptotic stability of the system, and it can make the state variables of the system converge to the equilibrium point in finite time; at the same time, it has strong robustness to the time-varying uncertain part of the system. The simulation results show that the control strategy has faster dynamic response speed, stronger ro-bustness and higher control accuracy.
文章引用：高圣伟, 亚志政, 许煜. 并联有源滤波器终端滑模变结构控制策略研究[J]. 电气工程, 2020, 8(1): 18-27. https://doi.org/10.12677/JEE.2020.81003

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