DESIGNING THE FUNCTIONAL SUBSYSTEMS OF SYSTEMS SUPPLYING POWER TO HIGH-EFFICIENT INDEPENDENT ELECTRICAL COMPLEXES

Abstract

The article outlines the experience gained in designing power supply systems for autonomous electrical complexes containing renewable energy sources. The general approaches to optimization designing and procedures for calculating the primary energy sources and storage subsystems are shown. The system tasks of designing include the problems relating to synthesis and analysis of structures, to connection of aggregative elements, and to the choice of the best alternative for implementing the requirements specified in terms of reference. As a result of solving these tasks in a competent manner, the power generated by energy sources can be increased significantly without increasing their installed power capacity, and structures featuring improved specific power performance, service life, and reliability indicators can be elaborated. The parametric tasks of designing include problems of choosing the voltage levels of sources, storage devices, converters, and controllers; kind of current and levels of output voltage stability; calculating the basic parameters and dimensions of elements at which the best mass and power performance characteristics of the system as a whole are achieved. Operational and technical tasks of designing are of particular importance for ensuring serviceability, reliability, and service life. The article gives examples of works devoted to the equalization schemes of capacitive characteristics of storages in the composition of a battery, of circuit solution models for designing autonomous systems featuring improved efficiency and durability.