지원사업
학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
커뮤니티
연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
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초록· 키워드
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A precise measurement of the grid voltage is one of the essential techniques, which is required to connect a renewable energy to the grid. In general, when a filter is used to eliminate unnecessary harmonics and noises, a signal is distorted by phase delay, amplitude attenuation, and other distortions. And the response characteristic of a controller is directly affected by bandwidth of cut-off frequency of the filter. To alleviate this problems, we propose an effective algorithm based on DFT(Discrete Fourier Transform) instead of approaching the filter application. The proposed algorithm ensures high precise measurement of the grid voltage because it can extract the fundamental and harmonics from the raw signal without any distortions. The high performance of the proposed algorithm is verified by PSIM simulation and experiments of Grid-Connected VSI.
목차
Abstract
1. 서론
2. 이산푸리에 변환
3. DFT 적용한 DQ 변환
4. 시뮬레이션
5. 실험
6. 결론
참고문헌
참고문헌 (12)
참고문헌 신청
1. [학술대회논문] - B.D Min / 2007 / A Novel Grid-Connected PV PCS with New High Efficiency Converter / International Conference on Power Electronics : 478 ~ 482
2. [학술대회논문] - S.-K. Chung / 2000 / Phase-locked loop for grid-connected three-phase power conversion system / Electric Power Applications. IEEE Proceedings 147 : 213 ~ 219
3. [단행본] - Arrillaga, J. / 1985 / Power system harmonics / John Wiley & Sons
4. [학술지(정기간행물)] - J-P Lee / 2000 / Harmonic Analysis and Filter Design on Distribution System using SuperHarm / Journal of the korean institute of llluminating and Electrical installation Engineers 14 (5) : 36 ~ 42
5. [학술대회논문] - J-H Kim / 2001 / PLL Method Using The Improved Discrete Fourier Transform / Power Electronics Annual Conference : 91 ~ 93
2. [학술대회논문] - S.-K. Chung / 2000 / Phase-locked loop for grid-connected three-phase power conversion system / Electric Power Applications. IEEE Proceedings 147 : 213 ~ 219
3. [단행본] - Arrillaga, J. / 1985 / Power system harmonics / John Wiley & Sons
4. [학술지(정기간행물)] - J-P Lee / 2000 / Harmonic Analysis and Filter Design on Distribution System using SuperHarm / Journal of the korean institute of llluminating and Electrical installation Engineers 14 (5) : 36 ~ 42
5. [학술대회논문] - J-H Kim / 2001 / PLL Method Using The Improved Discrete Fourier Transform / Power Electronics Annual Conference : 91 ~ 93
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