A SIMPLIFIED TOPOLOGY OF STAND-ALONE PV POWER GENERATION WITH ESS

Shiva Kumar, Srinivas
2016 unpublished
This paper presents a flexible architecture of a PV power conditioning system with energy storage. The proposed conditioning unit contains a boost converter (BC), a single-phase inverter, and a bidirectional dc/dc converter connected to the PV side of the BC. The BC regulates the dc-link bus-voltage. The bidirectional dc/dc converter endures battery bank charge/discharge control and PV maximum power point tracking (MPPT). Such architecture guarantees non change in controller configuration when
more » ... configuration when the storage disconnects. Therefore, the previously needed supervisory controller is eliminated. A system control strategy based on sliding-mode control (SMC) ensures a reliable output voltage regulation such as fast dynamic response, small steady-state error, and low total harmonic distortion (THD) under step changes and nonlinear loads. The controller structure, the dynamic behavior, and the design procedures are introduced. The proposed system is designed using MATLAB soft ware for analysis.
fatcat:ekk6zksm5fcfdmdjmhewiulsde