Single-Stage Photovoltaic System Fed Motor Load With Quasi Z-Source Inverter

Abstract

The quasi Z source inverter (qZSI) with battery can balance the undetermined fluctuations of the
photovoltaic power injected to the load. This paper proposes a energy stored qZSI-based PV power
system with constant dc-link peak voltage using motor load. The new topology of energy stored qZSI
is employed to improve the power compensation ability of existing topology, new constant dc-link
peak voltage control and load related maximum power point tracking are proposed, and the whole
system is analysed in detail. Experimental results verify the theoretical analysis and the proposed
energy stored qZSI-based PV power system.