Design and Performance Analysis of Common Duty Ratio Controlled Zeta Converter with an Adaptive P&O MPPT Controller

This paper gives the design and implementation of an easy, cost-effective and an advanced Zeta–Zeta converter for solar PV induction motor (IM) drive application. A communal duty ratio controlled (CDRC) input series output parallel (ISOP)-connected Zeta–Zeta converter is used for the active input voltage sharing and active output load current distribution. An adaptive perturb and observe (P&O) maximal power point tracking (MPPT) algorithm is used to eliminate the potential and current sensors for switching of Zeta converters. Furthermore, it is used for the soft starting of IMs. The sine pulse width modulation (SPWM) technique is applied to the voltage source inverter (VSI) in order to generate the switching signals. The constant head water pumps are designed to operate at constant speed without any dynamic distortions. The performance of the proposed CDRC ISOP-connected Zeta–Zeta converter fed solar PV water pump system is analyzed by using a MATLAB/Simulink window.