http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
3상 벅-부스트 DC-AC 인버터의 제어 및 구동에 관한 연구
한근우(Keun-Woo Han),정영국(Young-Gook Jung),임영철(Young-Cheol Lim),오승열(Seung-Yeol Oh),김광헌(Kwang-Heon Kim) 전력전자학회 2010 전력전자학술대회 논문집 Vol.2010 No.11
본 논문에서는 종전의 3상 H-브리지 PWM 인버터와 다른 토폴로지를 갖는 3상 벅-부스트 DC-AC 인버터를 위한 제어 기법을 제안하였다. 이를 위하여 공간벡터 변조 방식(SVM : Space Vector Modulation) 및 PI 제어기를 벅-부스터 DC-AC 인버터에 적용하고 이를 PSIM 시뮬레이션 통하여 타당성을 검증하였다.
상용차를 위한 무시동 에어컨 압축기용 공진형 DC/DC 컨버터 개발
한근우(Keun-Woo Han),김성곤(Seong-Gon Kim),정영국(Young-Gook Jung),임영철(Young-Cheol Lim) 전력전자학회 2014 전력전자학회 논문지 Vol.19 No.6
This study deals with a resonant converter of an anti-start air conditioner compressor for commercial vehicles. The anti-start air conditioner compressor must generally have a high current, high efficiency, a low volume, and a low weight. To reduce the switching losses and voltage and current stresses of the device, the anti-start air conditioner compressor applies the full-bridge L-C resonant converter topology. Hardware parameters are designed to have a wide voltage range, and the switching frequency range of the L-C resonant converter is determined. Simulation is implemented using PSIM and an experiment is performed to verify the proposed converter.
발전 특장차량용 7kW급 CVCF 전력변환장치의 출력 특성
한근우(Keun-Woo Han),정영국(Young-Gook Jung) 한국조명·전기설비학회 2021 조명·전기설비학회논문지 Vol.35 No.8
In this study, a 7kW CVCF(Constant Voltage Constant Frequency) power converter for power generation special vehicles is proposed and the output characteristics are investigated. The proposed system is implemented with a generator that is connected to the PTO (Power Take Off) hydraulic system of the engine of a special vehicle, and a power converter consisting of a 7kW boost DC-DC converter and a single-phase DC-AC inverter that is robust against noise and resonance. The type and capacity of the generator was selected as an 8kW class 3-phase permanent magnetic synchronous generator (PMSG) in consideration of the capacity of the 7kW power converter. The three-phase PMSG generates the 240V/250Hz induced electromotive force, and this induced electromotive force is boosted to DC stabilized by a 3-phase diode rectifier and a boost DC-DC converter, and a single-phase PWM inverter outputs a 220V/60Hz commercial voltage. In order to confirm the effectiveness of power generation system of the proposed special vehicle, a prototype is manufactured and the output relationship between the PMSGs induced electromotive force and the power converter, and the output characteristics and efficiency according to the load variations will be considered.
교류측 전압 및 전류 센서가 없는 3상 Z-소스 PWM 정류기의 퍼지-PI 제어
한근우(Keun-Woo Han),정영국(Young-Gook Jung),임영철(Young-Cheol Lim) 대한전기학회 2013 전기학회논문지 Vol.62 No.6
In this paper, we proposes the AC input voltage and current sensorless control scheme to control the input power factor and DC output voltage of the three-phase Z-source PWM rectifier. For DC-link voltage control which is sensitive to the system parameters of the PWM rectifier, fuzzy-PI controller is used. Because the AC input voltage and current are estimated using only the DC-link voltage and current, AC input voltage and current sensors are not required. In addition, the unity input power factor and DC output voltage can be controlled. The phase-angle of the detected AC input voltage and estimated voltage, the response characteristics of the DC output voltage according to the DC voltage references, the FFT results of the estimated voltage and current, efficiency, and the response characteristics of the conventional PI controller and fuzzy-PI controller are verified by PSIM simulation.