Design and Implementation of Active Power Control With Improved P&O Method for Wind-PV-Battery-Based Standalone Generation System

In this paper, the design and implementation of active power control with antiwindup PI controller (AWPI) and improved perturbation and observation (P&O) method with sliding mode control (SMC), are investigated to get a high level of performance with a reduced number of sensors for a stable operation of a wind-PV-battery-based hybrid standalone power generation system (HSPGS). The SMC approach with boundary layer is used for an optimum trajectory on the sliding surfaces, with variable operating conditions of many power converters connected at the same DC bus. Furthermore, detailed modeling and stability analysis to demonstrate the transversality, reachability, and equivalent control are presented. The effectiveness and robustness of HSPGSs and their respective control strategies are validated by simulation and test results on a hardware prototype using a DSP-dSPACE real time controller.