비선형 관측기를 이용한 유도전동기 벡터제어

다국어 초록 (Multilingual Abstract)

Direct vector control for induction motors requires the use of observers for estimation or observation of rotor flux magnitude and position. In this paper, authors discribe the induction motor vector control and introduce a nonlinear observer, named ELO(extended Luenberger Observer), and show simulation results taken with unknown variable, load torque. Normally, design of nonlinear observer need coordinate transfromation and linearization through solving the partial different equation. However, ELO requires minimal solution of nonlinear partial differential equation. Simulation was performed by under the enviroment of Matlab and Simulink with the proposed observer. Whole system model of Induction motor control containe a EL0 type flux observer, a dc-ac inverter modulated under SVPWM technique and a vector controller armed with multiple PI controllers.

목차 (Table of Contents)

• 목차
• List of table = ⅰ
• List of figures = ⅱ
• ABSTRACT = ⅲ
• Ⅰ. 서론 = 1
• Ⅱ. 시스템 모델링 = 3
• A. 유도전동기 = 3
• B. 벡터제어기 = 5
• C. 공간벡터 펄스폭변조 = 6
• Ⅲ. 비선형 관측기 = 10
• A. 비선형 관측기의 표준형 = 10
• B. Extended Luenberger Observer = 11
• C. ELO 설계 = 15
• Ⅳ. 시뮬레이션 결과 및 고찰 = 19
• Ⅴ. 결론 = 28
• 참고문헌 = 29
• 부록 1. 식 (44)의 역 가관측성 행렬의 계수 = 31
• 부록 2. 전동기 파라미터 및 PI 제어기 이득 = 33