Design of a DC excitation control for an autonomous wound-rotor induction generator in renewable-energy systems

Li Wang, Shiang Shong Chen

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

This paper proposes the design of a novel DC excitation control for a wound-rotor induction generator (WRIG) under autonomous-generation mode using a micro controller based on a reduced instruction-set chip (RISC). The source of the DC excitation control for the studied WRIG is obtained from its generated AC voltage through a step-down transformer, a bridge rectifier, and a DC-to-DC buck converter. In order to effectively modulate the desired DC voltage for controlling the generated voltage of the WRIG, a fuzzy controller embedded in the RISC-based micro controller is properly designed and implemented. Due to high-speed modulation capability of the employed micro controller, the voltage variation of the studied autonomous WRIG under loading conditions can be effectively compensated. The proposed WRIG system with its DC excitation control is practically implemented in a laboratory 300-W wound-rotor induction machine driven by a DC motor of 500 W. From both experimental measurements and computer simulations, it can be concluded that the proposed isolated WRIG with its DC excitation controlled by the micro controller can provide better voltage profile than traditional self-excited induction generator (SEIG) containing only excitation capacitors under various loading and switching conditions.

Original languageEnglish
Title of host publication2013 IEEE Industry Applications Society Annual Meeting, IAS 2013
DOIs
Publication statusPublished - 2013 Dec 1
Event2013 IEEE Industry Applications Society Annual Meeting, IAS 2013 - Lake Buena Vista, FL, United States
Duration: 2013 Oct 62013 Oct 11

Publication series

NameConference Record - IAS Annual Meeting (IEEE Industry Applications Society)
ISSN (Print)0197-2618

Other

Other2013 IEEE Industry Applications Society Annual Meeting, IAS 2013
CountryUnited States
CityLake Buena Vista, FL
Period13-10-0613-10-11

All Science Journal Classification (ASJC) codes

  • Control and Systems Engineering
  • Industrial and Manufacturing Engineering
  • Electrical and Electronic Engineering

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