제주대학교 Repository

모델예측 전류제어 기반 고효율 부스트 컨버터PFC

Metadata Downloads
Alternative Title
High Efficiency Boost PFC Converter based on Model Predictive Current Control
Abstract
Nowadays, electric vehicles (EVs) are gaining attention as an alternative to internal combustion engine vehicles that use traditional fossil fuels, driven by environmental regulations and the move towards decarbonization. Simultaneously, demand for EV charging devices is growing as a key component of the electric vehicle market. Especially for charging purposes, the onboard charger is equipped with an AC/DC converter, and the power factor correction (PFC) converters are used as AC/DC pre-regulators. The main purpose of a PFC converter is to reduce the input current harmonics and achieve a high power factor and high efficiency. Accordingly, research on current shaping and switching loss improvement is being actively conducted for the original purpose of PFC converters. However, the control method of the conventional boost PFC converter adopts a fixed switching frequency, so it is limited in improving the switching loss. In addition, distorted current occurs under distorted voltage, which degrades converter performance. Therefore, this paper proposes a boost PFC converter based on model predictive current control to achieve both improved efficiency and robustness against voltage distortion. The control method of the conventional boost PFC converter adopts a fixed switching frequency, so it is limited in improving the switching loss. The proposed method operates with a variable switching frequency because it predicts the inductor current based on a cost function and then controls it. When this method is applied, the switching frequency is reduced near the peak voltage where the current is the highest, so it is facilitated to improve efficiency. In addition, since it detects the frequency of the input voltage and generates a sine wave internally, it is robust against voltage distortion. The proposed method confirmed the facilitation of efficiency improvement compared to the conventional predictive current mode control. To verify the effectiveness of the proposed method, simulation and HIL (Hardware-In-the-Loop) tests are performed using PLECS RT-box. In addition, experiment is conducted by configuring an experimental setup of a 3.3kW boost PFC converter based on the SiC power module.
Author(s)
고현준
Issued Date
2024
Awarded Date
2024-02
Type
Dissertation
URI
https://dcoll.jejunu.ac.kr/common/orgView/000000011796
Alternative Author(s)
Ko Hyeon-Joon
Affiliation
제주대학교 대학원
Department
대학원 에너지응용시스템학부
Advisor
최영준
Table Of Contents
Ⅰ. 서 론 1
1.1 연구 배경 1
1.2 연구 목적 3

Ⅱ. 단상 부스트 PFC 컨버터 5
2.1 기본 동작 원리 5
2.1.1 회로 해석 및 모델링 6
2.2 기존의 부스트 PFC 컨버터 제어 방법 10
2.2.1 피크전류 모드 제어 10
2.2.2 평균전류 모드 제어 12
2.2.3 예측전류 모드 제어 14

Ⅲ. 제안하는 단상 부스트 PFC 컨버터 제어기법 17
3.1 모델예측 제어 18
3.2 모델예측 전류제어 기반 고효율 부스트 PFC 컨버터 20
3.3 모델예측 전류제어의 스위칭 주파수 감소 특성 24

Ⅳ. 시뮬레이션 및 검증결과 27
4.1 시뮬레이션 결과 27
4.2 검증결과 32
4.2.1 HIL test 결과 32
4.2.2 실험결과 34
4.2.3 결과 고찰 39

Ⅴ. 결론 42

참고문헌 43
Degree
Master
Publisher
제주대학교 대학원
Citation
고현준. (2024). 모델예측 전류제어 기반 고효율 부스트 컨버터PFC.
Appears in Collections:
Faculty of Applied Energy System > Electronic Engineering
Faculty of Applied Energy System > Energy and Chemical Engineering
Faculty of Applied Energy System > Mechanical Enginering
Authorize & License
  • AuthorizeOpen
  • Embargo2024-02-12
Files in This Item:

Items in Repository are protected by copyright, with all rights reserved, unless otherwise indicated.