Performance Evaluation of Three-Phase Grid Assisted SyRM Driven Water Pumping System with Mode Transition Capability

Abstract

In this paper, a synchronous reluctance motor (SyRM) drive-based water pumping system integrated to a three-phase distributional grid with seamless mode transition capabilities is presented. The system comprises a synchronous reluctance motor power through a voltage source converter (VSC), and a DC-DC boost converter is employed to fulfill different aspects in developing a reliable drive. Two sources namely solar photovoltaic array (SPVA) and distribution grid are available to drive the water pumping system. The SPVA is linked to the DC link via the DC-DC boost converter, and the three-phase grid is interfaced through a voltage source converter (VSC) at the DC link. The presented system is also enabled with synchronization and seamless mode transfer control to meet the drive demand irrespective of the availability of either source. In grid coupled mode, the VSC operates in current control mode using second-order generalized integrator with frequency locked loop (SOGI FLL), in the grid decoupled mode the VSC operates in voltage control mode to maintain rated voltage at the point of common coupling (PCC). The developed system follows the practices presented in the IEEE-519 standard and the presented system is validated using a hardware prototype and the recorded experimental results verify the efficacy of the system.