【摘要】 为了改善矩阵式整流器在输入电源畸变情况下的输出波形质量,减小输入滤波器造成的输入功率因数角,提出了一种基于滑模变结构的矩阵式整流器控制策略。详细论述了控制策略原理和设计过程,包括建立系统变结构模型,选择滑模面,给出滑动模态可达到条件和控制率,设计开关表等。着重对滑模控制和常规PI控制方案进行了实验比较,实验结果证明:基于滑模控制策略的矩阵式整流器具有无稳态误差,输出直流纹波小,动态响应速度快,输入功率因数高等优点,对网侧和负载侧干扰表现出了较强的不敏感性和鲁棒性。更多还原

【Abstract】 In order to improve the poor output performance of matrix rectifiers under distorted supply voltages,and reduce the input power factor angle caused by the input filter,a novel sliding-mode variable structure based matrix rectifier control scheme is proposed.Theoretical principle and design progress is discussed in detail,including modeling the variable structure system,selecting the switching surfaces,deriving the reaching conditions and the control laws,designing the switching table.The experimental comparison between the proposed control scheme and conventional PI control scheme is carried out.The obtained results show that,SMVSC based matrix rectifier possesses good steady-state performance,fast dynamic response,unity input power factor,and exhibits robustness and insensitiveness to grid-side and load-side perturbations.更多还原