Design and experimental performance of a PV Ice-maker without battery

This paper presents a solar photovoltaic powered ice-maker which operates without the use of batteries and is therefore environmentally friendly and may be used in truly autonomous applications in remote areas. The successful operation of the refrigeration compressors by the PV panels is ensured by the use of a novel concept dedicated controller, which provides easy startup, maximum power tracking and power management for the four compressors of the system. The prototype results have shown very good ice-making capability and reliable operation as well as a great improvement in the startup characteristics of the compressors, which remain operational even during days with low solar irradiation and operate with improved utilization of the available photovoltaic power.