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예측 제어 기법을 이용한 PFC 컨버터의 전류 왜곡 개선
- Alternative Title
- Scheme to Improve the Line Current Distortion of PFC Converter Using a Predictive Control Algorithm
- Author(s)
- 김대중
- Alternative Author(s)
- Dae Joong Kim
- Advisor
- 이교범
- Department
- 일반대학원 전자공학과
- Publisher
- The Graduate School, Ajou University
- Publication Year
- 2016-02
- Language
- kor
- Keyword
- Predictive control; Conduction-mode detection; Digital control; Current distortion; factor correction; PFC
- Alternative Abstract
- This paper proposes a predictive control algorithm that includes conduction-mode detection for power factor correction (PFC) converter. In PFC converters, the line current is usually distorted because of the characteristics of the proportional integral (PI) current controller. To improve the quality of the current, the PI current controller requires additional circuits or algorithms. However, because of the optimal duty cycle determined by estimating the next-state current in both the continuous conduction mode (CCM) and the discontinuous conduction mode (DCM), the proposed predictive control method has a fast dynamic response and accuracy compared to the PI current control method. Moreover, the proposed algorithm can detect the conduction mode without any additional circuitry or mode-detection algorithm using the characteristic of the optimal duty cycle calculated by the predictive control. These advantages of the proposed algorithm improve the quality of the line current for PFC converters. We verify the proposed method by performing experiment using a 1.5 kW PFC converter.
- Fulltext
- Appears in Collections:
- Graduate School of Ajou University > Department of Electronic Engineering > 3. Theses(Master)
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