In this paper, a classic proportional–integral (PI) control strategy as an energy management strategy (EMS)
and a microgrid stand-alone power system configuration are proposed to work independently out of
grid. The proposed system combines photovoltaics (PVs), and Battery. The system supplies a dump load
with its demand power. The system includes DC/DC and DC/AC converters, as well as a maximum power
point tracking (MPPT) to maximize the harvested energy from PV array. The classic PI control strategy is used
to control the main system parameters like state-of-charge (SOC) for the battery. The corresponding energy
management and control strategy are proposed to realize the power balance among three ports in different
operating scenarios, which comprehensively takes both the maximum power point tracking (MPPT) benefit
and the battery charging/discharging management into consideration. The simulations are conducted using
the Matlab/Simulink software to verify the operation performance of the proposed PV/battery hybrid
distributed power generation system with the corresponding control algorithms, where the MPPT control loop,
the battery charging/discharging management loop are enabled accordingly in different operating scenarios.
Maximum power point tracking and optimal Li-ion battery charging control for photovoltaic charging system
