设计一种基于新滑模面函数的滑模控制(SMC)方法,以提高最大功率点跟踪(MPPT)控制的抗干扰性能、跟踪精度及速度。在新滑模面中,将不完全微分(ID)与非线性微分跟踪器(NTD)结合,实现相位补偿,得到具有强抗干扰的近似纯微分,代替原滑模面函数中的偏微分。仿真与实验结果表明,基于新滑模面的滑模MPPT控制算法,有效提高了最大功率点(MPP)的跟踪精度、跟踪速度及控制系统的稳定性。
A kind of new sliding surface function of sliding mode control(SMC) method is designed to improve the sp- eed and accuracy of the maximum power point tracking(MPPT) control,in which the approximation of the pure diff- erential with strong anti-interference instead of the pure differential.The approximation of the pure differential is ob- tained by combining the incomplete differential (ID) with the nonlinear tracking differentiator(NTD).Simulations and experimental results show that the new sliding surface-based MPPT control algorithm can track the maximum power point(MPP) of the photovohaic system quickly and accurately, and improved the stability of the control system.