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Graduate School of Ajou University Department of Electronic Engineering 3. Theses(Master)

대용량 풍력발전 시스템 설계를 위한 파라미터 계측 및 제어 알고리즘 개발

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dc.contributor.advisor이교범-
dc.contributor.author강이규-
dc.date.accessioned2018-11-08T07:58:39Z-
dc.date.available2018-11-08T07:58:39Z-
dc.date.issued2011-02-
dc.identifier.other11216-
dc.identifier.urihttps://dspace.ajou.ac.kr/handle/2018.oak/9296-
dc.description학위논문(석사)--아주대학교 일반대학원 :전자공학과,2011. 2-
dc.description.tableofcontents제 1 장 서론 1 제 2 장 3병렬 Back-to-back 컨버터를 이용한 풍력발전시스템 4 2.1 가변속 풍력발전 시스템 4 2.2 매입형 영구자석 동기발전기 5 2.2.1 매입형 영구자석 발전기의 특징 5 2.2.2 매입형 영구자석 동기발전기의 수학적 모델링 7 2.2.3 고정자의 유기 기전력 9 2.2.4 매입형 영구자석 동기기의 출력 10 제 3 장 매입형 영구자석 동기발전기의 초기 위상각 추정 및 동기 인덕턴스 계측 12 3.1 단위 전류당 최대 토크 운전 12 3.2 고주파 시험을 위한 매입형 영구자석 동기기의 모델링 15 3.3 최소자승법을 이용한 전류타원 해석 18 제 4 장 PQR 전력이론을 이용한 LCL필터의 공진보상 및 병렬인버터의 순환전류제어 22 4.1 LCL필터 22 4.2 영상분 순환전류 24 4.2.1 계통측 인버터의 전류제어방법 24 4.2.2 영상분 순환전류 모델링 25 4.2.3 PQR 전력이론 27 4.2.4 제어 원리 30 제 5 장 시뮬레이션 33 제 6 장 실험 40 제 7 장 결론 및 요약 48 참고문헌 49-
dc.language.isokor-
dc.publisherThe Graduate School, Ajou University-
dc.rights아주대학교 논문은 저작권에 의해 보호받습니다.-
dc.title대용량 풍력발전 시스템 설계를 위한 파라미터 계측 및 제어 알고리즘 개발-
dc.title.alternativeParameter Measurement and Control Algorithm for a High-Power Wind Generation System-
dc.typeThesis-
dc.contributor.affiliation아주대학교 일반대학원-
dc.contributor.alternativeNameKang Yi Kyu-
dc.contributor.department일반대학원 전자공학과-
dc.date.awarded2011. 2-
dc.description.degreeMaster-
dc.identifier.localId569465-
dc.identifier.urlhttp://dcoll.ajou.ac.kr:9080/dcollection/jsp/common/DcLoOrgPer.jsp?sItemId=000000011216-
dc.subject.keyword풍력발전시스템-
dc.subject.keyword동기인덕턴스-
dc.subject.keyword영상분 순환전류-
dc.subject.keyword공진보상-
dc.subject.keyword영구자석 회전자의 초기위치-
dc.description.alternativeAbstractThis paper proposes two algorithms for driving in a wind power system using an IPMSG (Interior Permanent Magnet Synchronous Generator). First of all, this paper presents a simple scheme to estimate the initial rotor position and the d-, and q-axis inductances for an effective Maximum Torque per Ampere (MTPA) operation. An IPMSM essentially requires an exact coordinate transformation and accurate inductance values to use a reluctance torque caused by the saliency characteristic. In the proposed high-frequency voltage testing method, there is no voltage drop caused by the resistance and the electromotive force. The initial rotor position and the inductance can be measured through the analysis of the stator current without turning the rotor. A power conversion system in a wind turbine using a Permanent Magnet Synchronous Generator (PMSG) is directly connected between a generator and a grid. The capacity of power semiconductor switches and filters should be selected regarding the overall system rating and the output power quality. The use of an LCL-filter and n-parallel power conversion devices can be the best solution for these problems in a high power system. However, the resonant pole introduced in the LC part produces resonance in the system leading to the stability problem. The voltage difference between the parallel back-to-back converters generates a zero-sequence circulating current. In this paper, a novel control method using a PQR transformation for simultaneously compensating of both the LCL-filter resonance and the zero-sequence circulating current in a wind power system driven by 3-parallel back-to-back converters is proposed. The effectiveness of the proposed algorithms is verified by simulations and experimental results.-
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