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진보된 단상 PLL 제어방법을 이용한 8200호대 전기기관차 보조전원장치용 컨버터 제어
정노건,이을재,김재문,Jung, No-Geon,Lee, Eul-Jae,Kim, Jae-Moon 대한전기학회 2017 전기학회논문지 Vol.66 No.1
The APF (All Pass Filter) method that utilizes the computational power of the controller is most commonly used. However, since the calculation of the filter coefficient is complicated, the calculation is carried out in advance. It is difficult to apply it to the frequency fluctuation environment because the coefficient value is fixed. In this paper, a new control method of single phase PLL that can be usefully used in PWM converter device for electric railway was explained. Comparison and examination of similarities and differences between the conventional APF method PLL controller method and the newly proposed modified MA filter method PLL technique were performed. The possibility of implementation of the modified MA filter method through computer simulation was analyzed. In conclusion, the method proposed as the conclusion was applied to the APU(Auxiliary Power System) of 8200 Series Electric Locomotive and its usefulness was confirmed.
강체전차선로의 특성을 고려한 급전시스템에서 이선에 따른 철도차량 전력변환장치에 대한 특성에 관한 연구
정노건(No-Geon Jung),이환(Hwan Lee),김재문(Jae-Moon Kim) 대한전기학회 2016 전기학회논문지 Vol.65 No.3
In this paper, Characteristic of power conversion unit of a railway vehicles according to contact loss in feeding system that applied impedance of rigid conductor is analyzed. It applied impedance of rigid bar in modeling of electric railway system. Railway vehicles are performed of modeling based on the performance of the electric railway vehicle. Effects of the contact loss in the power conversion unit were analyzed via main transformer of railway vehicle, the input and output voltage characteristics of the converter through contact loss was generated after linking the vehicle with feeding system.
전기철도 AT급전계통 전력해석을 통한 실계통의 단락전류 분석
정노건(No-Geon Jung),정호성(Ho-Sung Jung),구경완(Kyung-Wan Koo),김재문(Jae-Moon Kim) 대한전기학회 2014 전기학회논문지 Vol.63 No.11
In this paper, we perform a modeling for the AT Feeder system in AC electric railway and we utilize the power EMTDC program to implement about AT feeder system modeling. In addition, we study the impedance characteristics of the AT feeder system and calculated fault current and impedance according to the distance due to fault accident. Based on it’s result, fault current are compared between calculating the value and simulation value in EMTDC modeling. Impedance of power system is Largest at the middle point of the system and is smallest near autotransformer, and then showed that the fault current is inversely proportional to impedance characteristics.
연료전지 발전시스템을 이용한 축소형 철도차량 적용 선행연구
정노건(No-Geon Jung),장진영(Chin-Young Chang),창상훈(Sang-Hoon Chang),김재문(Jae-Moon Kim) 대한전기학회 2014 전기학회논문지 Vol.63 No.1
Fuel cell power system, unlike conventional energy sources, converts chemical energy into electrical energy through electrochemical reaction of hydrogen and oxygen. In recent years, railway field as well as mobile fuel cell power system is being studying actively with development of hydrogen storage technologies. This paper presents the feasibility study on small-scale prototype electric railway vehicle application using fuel cell generation system. it is confirmed that proposed fuelcell-battery hybrid system shows good response characteristic about speed and torque based on design of parameter on system. Also as results of response for proposed system modeling, it show that powering mode and braking mode of system is controlled by switching devices of converters.
8200호대 전기기관차 추진시스템 모델링을 이용한 응답특성분석
정노건(No-Geon Jung),장진영(Chin-Young Chang),윤차중(Cha-Jung Yun),김재문(Jae-Moon Kim) 대한전기학회 2013 전기학회논문지 Vol.62 No.11
Conventional power conversion unit that is a major part of the propulsion system has applied GTO thyristor as a switching semiconductor device of main circuit since introduction of the 8200 electric locomotive. But problem that quick maintenance is difficult and its cost is increasing occurs because major components of the power conversion unit are slowly discontinued. To solve these, in this paper, it was analyzed the response characteristic of the propulsion system modeling of the 8200 electric locomotive using IGBT which is applied recently to ensure propulsion control technology. As results of response for a Propulsion system modeling, it show that a power conversion unit is controlled by PLL(Phase-locked loop) and SVPWM(Space Voltage PWM) respectively.
전기철도차량 이선 현상 검측을 위한 TEO 및 STFT 신호처리기법 적용에 관한 연구
정노건(No-Geon Jung),박철민(Chul-Min Park),이재범(Jae-Bum Lee),박영(Young Park),신승권(Seung-kwon Shin) 대한전기학회 2018 전기학회논문지 Vol.67 No.11
In this paper, A technique for detecting contact loss at the input power of a railway vehicle has been studied when the contact loss occurs in the feed system. The impedance of the actual railway line was applied to the modeling of the feed system, and modeling was performed based on the performance of the electric railway vehicle. The input voltage and current of the railway vehicle through modeling were analyzed by applying TEO and STFT signal processing technique.