Hybrid Power Supply System with Fuzzy Logic Controller: Power Control Algorithm, Main Properties, and Applications

This paper presents a novel power supply system based on the use of fuzzy inference logic to improve the power control of renewable energy sources. The system comprises renewable solar and wind sources, and an accumulator battery is used as an additional power source. The procedure for the parallel connection of multiple energy sources provides a stable power supply and optimal charging of the accumulative element. Renewable energy sources are connected in parallel using two serial converters and controlled by the controller based on the fuzzy logic. The reference voltage control of the serial converter enables an optimal use of available energy sources. The accumulative element is connected in parallel to compensate for the shortage of solar and wind energies, whereas if the available renewable energy exceeds the needs of the consumers, the surplus energy is accumulated in the battery. All measurements are conducted on the prototype of the hybrid power system under real conditions and compared with the applied systems of this type. This novel system is mainly used in remote telecom locations where there is no power distribution network.

Automated summary

This paper introduces a novel power supply system that utilizes fuzzy inference logic to enhance the control of renewable energy sources. The system integrates solar and wind sources, along with an accumulator battery as an additional power source. By parallel connecting multiple energy sources, the system ensures stable power supply and optimal charging. The system uses two serial converters and a fuzzy logic controller to control the parallel connection of the renewable energy sources, and the reference voltage control of the converters enables optimal utilization of the available energy sources. The accumulated battery compensates for any shortage of solar and wind energies, and excess energy is stored in the battery. Experimental measurements were conducted on a prototype system under real conditions and compared with existing systems of similar nature. This innovative system is primarily designed for remote telecom locations that lack a power distribution network.