基于卡尔曼滤波的光伏控制器研究

Research on Photovoltaic Controller Based on Kalman Filtering

提出一种基于卡尔曼滤波的自适应扰动观察最大功率点跟踪(MPPT)策略,且采用多相交错并联同步Buck拓扑为光伏控制器主电路拓扑。该跟踪策略能有效提高光伏控制器MPPT算法的性能、系统的动态响应及稳定性。采用多相交错并联同步Buck拓扑结构,能有效降低输出电流的纹波,提高输出功率的稳定性和系统的动态响应,且易于电磁干扰(EMI)设计,确保MPPT控制策略的实现。最后通过搭建仿真模型和实验平台,验证了所提控制策略及拓扑的有效性和实用性。

An adaptive perturbation and observation maximum power point tracking （MPPT） method based on Kalman filtering is proposed, and multiphase interleaved parallel synchronous buck topology is adopted as the main topology. The control strategy can effectively improve the performance of the photovoltaic controller MPPT algorithm, the dynamic response and the stability of the system.Adopting multiphase interleaved parallel synchronous buck topology can effectively reduce the output current ripple,improve the output power stability and dynamic response of the system, easy electro magnetic interference （EMI） design to ensure the realization of MPPT control strategy.Finally, the simulation model and experimental platform verify the proposed the effectiveness and practicality of the control strategy and the topology.