Photovoltaic Microinverter with Hybrid Energy Storage System (HESS) and Virtual Impedance Control for Injection into a Microgrid

This research provides a form of linear control, using exact linearization to manage the charging and discharging of the energy storage elements (Battery/UC), the tracking of the maximum power point and the injection of power to a microgrid. The use of exact linearization allows working with a wide operating range, unlike other linearizations that require approximations and allow working only in a single operating point. In addition, the proposed control is complemented by incorporating a virtual impedance block to reduce overshoot and accelerate the steady state response.