论文部分内容阅读
针对电力有源滤波器存在滤波效果不够理想这一问题,并根据系统参考信号是周期变化的特点,提出了递推积分PI积分控制算法,实现对系统的无差控制。在此基础上,为提高系统响应速度,将递推积分PI控制与滞环控制有机结合,提出了复合型滞环控制方法。该方法具有计算量小、容易工程实现的特点。利用频域分析法从理论上证明了所提出的控制算法的有效性。最后,对所提出的方法和传统的滞环控制方法进行了仿真和实验研究,从快速性和控制精度2个方面进行了比较,验证了所提出的方法的可行性。
Aiming at the problem that the filtering effect of the active power filter is not ideal enough, and according to the characteristic that the system reference signal changes periodically, a recursive integral PI integral control algorithm is proposed to realize the system with no difference control. On this basis, in order to improve the system response speed, the recursive integral PI control and hysteresis control are combined organically, and a composite hysteresis control method is proposed. The method has the characteristics of small calculation and easy implementation. The validity of the proposed control algorithm is proved theoretically by using the frequency domain analysis method. Finally, the proposed method and the traditional hysteresis control method are simulated and experimentally studied, and the comparison between fastness and control precision is carried out to verify the feasibility of the proposed method.