Sungjoon Cho, Ho-Sung Kang, Kyo-Beum Lee, and Ji-Yoon Yoo, "Performance Improvement of a Grid-Connected Inverter under Distorted Grid Voltage Using a Harmonic Extractor," Electronics, vol. 8, no. 1038, pp. 1–21, Sep. 2019. -SCIE > Paper

본문 바로가기

Paper

International Journals Sungjoon Cho, Ho-Sung Kang, Kyo-Beum Lee, and Ji-Yoon Yoo, "Performance Improvement of a Grid-Connected Inverter under Distorted Grid Voltage Using a Harmonic Extractor," Electronics, vol. 8, no. 1038, pp. 1–21, Sep. 2019. -SCIE

2019

본문

This paper introduces an improved current control strategy for a grid-connected inverter system operating under distorted grid

voltage conditions. Although existing current controllers for grid-connected inverters have proportional integral gains with suitable

bandwidth, low-order harmonic components can be generated by distorted grid voltages. The proposed improved current controller

is established in a synchronous reference frame that rotates at harmonic frequency. The input signals for the harmonic current

controller should contain only the specific harmonic components requiring suppression. Therefore, the proposed current controller

uses a harmonic extractor to distinguish current signals from fundamental and specific harmonic components. The harmonic extractor

retains only the relevant harmonic components for individual current controllers with high harmonic signal ratios. This paper

introduces two different strategies to extract specific harmonic components for the current controller. The proposed control strategy

does not require any additional hardware filter circuits and can be implemented easily by designing a suitable digital filter. When

using the proposed method, grid current quality is significantly improved compared to conventional methods that do not include

harmonic extractors. The effectiveness of the proposed method is verified through simulations and practical experiments. 

 

첨부파일

  • 170.pdf (9.1M) 84회 다운로드 | DATE : 2019-12-03 10:56:33
Total 281건 6 페이지
Paper 목록
번호 년도 논문명
206 2020 International Journals
205 2020 International Journals
204 2020 International Journals
203 2020 International Journals
202 2020 International Journals
201 2020 International Journals
200 2020 International Journals
199 2020 International Journals
198 2020 International Journals
197 2020 International Journals
196 2020 International Journals
195 2020 International Journals
194 2020 International Journals
193 2020 International Journals
192 2020 International Journals
게시물 검색

회원로그인

접속자집계

오늘
63
어제
649
최대
3,510
전체
816,764

그누보드5