基于滑模变结构方法的APF电流控制策略

发布时间：2018-03-21 14:44

本文选题：有源电力滤波器(APF)　切入点：电流控制　出处：《电气传动》2016年05期 　论文类型：期刊论文

【摘要】：采用比例积分(PI)调节器的滞环空间矢量PWM(HSVPWM)控制系统难以确保有源电力滤波器(APF)遭受未知扰动或者运行状态发生变化时系统的控制性能。针对该问题,提出一种基于滑模变结构方法的滞环空间矢量控制,以有效提高APF系统的暂态控制性能。电压外环采用滑模变结构控制,以克服传统PI调节器抗扰动能力差等问题。在电流内环,当系统电流偏差被控制在一定范围内时,开关状态的选择以降低系统的开关损耗为目标;当系统电流偏差较大时,开关状态的选择以提高暂态响应速度为目标。与采用传统PI控制器的HSVPWM控制策略进行仿真对比,结果表明所提控制策略的暂态响应时间减少了25%以上;并利用实验结果进一步验证了所提策略的可行性。
[Abstract]:The hysteretic space vector PWM (HSV PWM) control system with a proportional integral PI regulator is difficult to ensure the control performance of the active power filter (APFF) when it is subjected to unknown disturbances or changes in its operating state. A hysteretic space vector control based on sliding mode variable structure method is proposed to improve the transient control performance of APF system effectively. The voltage outer loop adopts sliding mode variable structure control. In order to overcome the problem of poor anti-disturbance ability of traditional Pi regulator, when the current deviation of the system is controlled within a certain range, the choice of switching state is aimed at reducing the switching loss of the system, and when the current deviation of the system is large, Compared with the HSVPWM control strategy with traditional Pi controller, the result shows that the transient response time of the proposed control strategy is reduced by more than 25%. The feasibility of the proposed strategy is further verified by the experimental results.
【作者单位】：西安理工大学自动化与信息工程学院;
【基金】：国家自然科学基金资助项目(51507138) 陕西省教育厅科研计划项目资助(15JK1502) 陕西省重点学科建设专项基金(5X1301) 高等学校博士学科点专项科研基金(20126118110009) 西安理工大学教师科研启动经费项目(103-400211420)
【分类号】：TM761;TN713.8

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