Multi-operational solar-operated generator set system for grid-connected and off-grid electricity supply

Abstract

This paper presents the concept of using a DC motor and synchronous generator as an electromechanical inverter as an alternative option to present popular approach of using solid-state inverters in converting the solar DC supply into AC, suitable to run common electrical appliances. It introduces to a more resourceful solar electricity supply system that suits with the needs for various occasions rather have to be limited to one particular application. The system is highly versatile, features with 5 different modes of operation which can be used to function in either gridconnected or off-grid conditions, day and night. The block concept of the system and the main controller with programming flowcharts for multiple modes of operation are proposed for a 2kW output power.