Experimental Study on Doubly-fed Rotary Frequency Converter

Abstract

Wind power generation using an unlimited, natural energy is getting an attention regarding environment issues in recent years, and the installed capacity of wind power generation system is increasing at a rapid paced, Resulting in deterioration of power quality especially frequency and voltage. This fact will be a big problem to restrict large capacity of wind farm.This paper proposes a new frequency converter: rotary frequency converter (RFC) to moderate the electric output from wind generation, generators and a grid, providing a smoothed electric power which is to be installed between a set of wind electric output, promoting the wind power generation introduction. This mainly consists of a synchronous machine and the adjustable-speed machine. Independent controls of input/output voltage, active power, and reactive power offer electrical separation between the two networks. Construction of prototype model and its characteristics is discussed.