Hybrid low-power Wind Generation and PV gridconnected system with HPC, PC and MPPT control

This paper presents a hybrid grid-connected low-power Wind Generator (WG) and Photovoltaic (PV) system with Hybrid Power Control (HPC), Power Control (PC) and Maximum Power Point Tracking (MPPT) control modes. This system mainly focuses on household applications. Due to legal restrictions, these three control modes will be implemented in order to assure that no power is injected into the electrical grid and, at the same time, that the system has an optimized performance. The PC mode will be active when home´s consumed power is lower than the system´s maximum available power (P_WGmax+P_PVmax in MPPT mode), the HPC mode will be enabled when the home´s power is higher than P_WGmax but lower than P_WGmax+P_PVmax and the MPPT mode will be used when the consumed power is higher than P_WGmax+P_PVmax. With these control modes, the system´s controller plays the most important role, which is to decide which control mode should be active in order to supply the maximum possible power, without power injection into the grid.