Design and analysis of solar PV and electrolyzer based DG with unique control aspect

This paper depicts the active power and VAR control with the maximum power point tracking (MPPT) along with a poly phase grid integrated PV system. The maximum power tracking is achieved with Perturb &Observe algorithm and incremental conductance algorithm. The output from the PV is processed through a dc link capacitor and is then fed to the voltage source converter for converting DC to AC and vice-versa. The control strategy with dq0 transform using PI controller is utilized for the regulation of the active and VAR power, the d axis component is used for regulation of the active power and q axis component is used for regulating the reactive power. The developed control algorithm is tested under double line to ground and line to ground fault condition and controlling the VSC as auxiliary service to supply the reactive power. An electrolyzer is connected in order to supply constant power during healthy as well as faulty condition and unavailability of consistent solar irradiance. The analysis of the proposed grid-connected inverter has been modelled and validated in MATLAB/ SIMULINK.