Adaptive fuzzy sliding control of single-phase PV grid-connected inverter

作者：Fei, Juntao^*; Zhu, Yunkai

来源：PLos One, 2017, 12(8): e0182916.

DOI：10.1371/journal.pone.0182916

• HYBRID ELECTRIC VEHICLES
• MPPT TECHNIQUE
• SYSTEM
• OPTIMIZATION

In this paper, an adaptive fuzzy sliding mode controller is proposed to control a two-stage single-phase photovoltaic (PV) grid-connected inverter. Two key technologies are discussed in the presented PV system. An incremental conductance method with adaptive step is adopted to track the maximum power point (MPP) by controlling the duty cycle of the controllable power switch of the boost DC-DC converter. An adaptive fuzzy sliding mode controller with an integral sliding surface is developed for the grid-connected inverter where a fuzzy system is used to approach the upper bound of the system nonlinearities. The proposed strategy has strong robustness for the sliding mode control can be designed independently and disturbances can be adaptively compensated. Simulation results of a PV grid-connected system verify the effectiveness of the proposed method, demonstrating the satisfactory robustness and performance.

• 出版日期2017-8-10
• 单位河海大学