Performance Optimization of Grid-Interactive Switched Reluctance Motor-Driven SPWPS Utilizing a New Structure of Boost Converter

Abstract

This paper presents an efficient and reliable grid-interactive solar-powered water pumping system (SPWPS) employing a 4-phase SRM (Switched Reluctance Motor) drive for uninterrupted water supply. The integration to the grid to a solar-powered water pumping system (SPWPS) as electrical energy storage, delivers the backing against the intermittency in power, minimum electricity cost and earns from excess. The grid side voltage source converter (VSC) is used to maintain the power quality of grid indices. A unit vector template (UVT) generation method is used with the developed control for grid-tied VSC to estimate the fundamental component of grid voltage. The grid is integrated at the DC link of mid-point converter which energizes an SRM drive is implemented to function the grid-tied VSC. The inclusion of PV feed-forward terms in VSC control has significantly improved the dynamic performance of the system. Moreover, the new control logic is also discussed in this work to provide equal voltages for two capacitors of the split converter in both starting and in steady-state conditions. Owing to the PWM (Pulse Width Modulation) switching of a split converter, a reduction is achieved in the DC link capacitor size. The applicability of the developed system is verified by experimental results.