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이중여자 유도형 풍력발전기의 전력제어를 위한 선형 가변구조 제어기법
- Alternative Title
- Kim, Won-Sang
- Author(s)
- 김원상
- Alternative Author(s)
- Kim, Won-Sang
- Advisor
- 이교범
- Department
- 일반대학원 전자공학과
- Publisher
- The Graduate School, Ajou University
- Publication Year
- 2008-08
- Language
- kor
- Abstract
- 본 논문은 이중여자 유도형(DFIG) 풍력발전시스템에서 유효전력과 무효전력을 직접적인 제어와 기기상수의 변동에 강인제어를 수행하기 위해 선형가변구조제어기법을 제시한다. 제안하는 제어기법은 변형된 직접제어기법(DPC)원리와 전력회로부의 스위칭 지령값을 위한 공간전압벡터변조방식(SVM)을 이용한다. 본 논문에서 공간전압벡터변조방식을 이용한 선형가변구조제어기법은 고정된 스위칭 주파수에서 기기상수의 변화에 강인한 전력제어가 가능하고, 기존의 자속기준제어기법(FOC)에서 사용되었던 전류제어기와 축변환 없이 직접적으로 전력을 제어함으로써 제어구조가 간단하다. 시뮬레이션과 실험 결과를 통해 제안하는 제어기법의 타당성을 확인한다.
- Alternative Abstract
- The original direct power control (DPC) is known to give a fast response under transient conditions. However, active power, reactive power and current pulsations occur in steady-state operation. A family of variable structure controllers for the doubly fed induction generator (DFIG)-based wind turbine system is presented, using the principles of an active and reactive power controller known as modified DPC, and where linear and variable structure control (LVSC) and space-vector modulation (SVM) are combined to ensure high-performance operation. The LVSC scheme is designed following the modified DPC philosophy, which provides robust and fast power controls without frame transformation and the current controller that is used in the conventional FOC drive. Simulation results and experimental results demonstrate that the proposed methods preserve the effectiveness and robustness during variations of active and reactive power, rotor speed and converter DC-link voltage.
- Fulltext
- Appears in Collections:
- Graduate School of Ajou University > Department of Electronic Engineering > 3. Theses(Master)
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