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A virtual inertia voltage restoration feedback emulated controller is proposed to improve the voltage oscillation, inertia problem, &amp; damping of the PV system. The voltage regulation is improved by series and parallel emulations conditions highly dependent on negative resistance. However, non-linearities, weak damping &amp; inertia of PV an inherent problem, causes prone to stability, oscillations issue under the variation of irradiance. Oscillation issue, initial notching of the PV system has been enhanced by the virtual inertia feed-forward controller. However, the steady-state error of the PV voltage is minimised by restoration controller to ensure a stable system. The PV system stability is analysed to verify the feasibility of the controller by bode plots. The initial notching, RoCoV and crossover frequency is improved as 1.8 times, 1.26 and 1.9 times respectively as compared to traditional controller. Different cases have been analysed the performance and validity of the proposed controller.

Impact of variable negative solar resistance: modified virtual feed forwarded with feedback emulated inertia controller