철도 차량용 APS 병렬 운전 알고리즘 연구

송민섭(Min-Sup Song),김연충(Yuen Chung Kim) 한국철도학회 2016 한국철도학회 학술발표대회논문집 Vol.2016 No.5

철도 차량용 보조전원장치 (APS, Auxiliary Power Supply)는 차량에 필요한 전원을 공급하는 핵심적인 전장품으로써 차량 편성에 따라 2대 이상으로 구성되어 독립적으로 운영된다. 일부 APS에 고장 발생 시 정상 운영 중인 APS가 연장 급전을 통해서 고장이 발생한 APS의 부하에 임시적으로 전원을 공급할 때 까지 전원이 일시적으로 차단되어 승객에 불편을 초래한다. 본 논문에서는 이러한 문제점을 해결하기 위해서 2대 이상의 APS가 상시 병렬 운전을 하여 끊김없는 전원 공급을 할 수 있는 APS 병렬 운전 알고리즘에 대해서 연구하였다. 병렬 운전을 위한 통신 및 외부 제어 부담을 최소화 하기 위해 간단하고 효과적인 제어 알고리즘을 제안하고, PSIM 시뮬레이션으로 타당성을 검증하였다. Auxiliary power supply (APS) for railway vehicle, consisting of more than two subs, is the key electric component for supplying electric power of vehicle. When one of APS fails, fault one is stopped and disunited from vehicle load. During the extension of power from remaining normal APS, passengers have to endure inconvenience due to temporarily blocked electric power. In this paper, the simple parallel synchronous operation algorithm for APS was propose, with which All APS can operated in parallel at all times resulting seamless power supply to load even during failure of some APS. For minimizing the communication and other external control efforts to implement synchronous operation, simple but effective control algorithm was suggested and verified by PSIM simulation.

보조 정류회로를 활용한 통합된 5 kW 급 소형 제논 램프 전원장치

류홍제,최민규,송승호 대한전기학회 2022 전기학회논문지 Vol.71 No.9

This paper deals with the integrated 5 kW xenon flash lamp power supply. In order to drive a xenon lamp used in an application field of light sintering of printed electronics, the power supply in consideration of load characteristics is required. The simmer power supply that maintains the xenon lamp's ignition is designed based on an LCC resonant converter with both voltage and current source characteristics. Also, an auxiliary rectifier and trigger applying high voltage are required to ignite the xenon lamp. And the power supply is designed based on a boost-type resonance circuit and a Cockcroft Walton voltage multiplier, respectively, in consideration of sharing the inverter with the simmer. This paper analyzes the topology of the proposed power supplies and selects the parameters and confirms them through simulation. Finally it was verified through experiments that the output voltages of the simmer, the auxiliary rectifier, and the trigger were 20 V, 400 V, and 10 kV, respectively.

철도차량 보조전원장치 특성 분석에 관한 연구

한영재(Young-Jae Han),한성호(Seong-Ho Han),이태형(Tae-Young Lee),이수길(Su-Gil Lee),이영호(Young-Ho Lee) 대한전기학회 2017 전기학회논문지 P Vol.66 No.4

Auxiliary power supply for railway vehicle is a equipment that focuses on the service of passengers in a vehicle. It supplies power to controllers used in heating and cooling devices, fluorescent lamps, batteries and many other electrical equipments. Most of the auxiliary power supply for railway vehicle are mainly used for the round trips and circulation routes within the metropolitan area and have a capacity of 170∼200 kVA. In this study, we developed the auxiliary power supply capacity to 240kVA for 200km/h class. As such, the auxiliary power supply is an important device for securing the reliability and safety of the railway vehicle and improving the passenger convenience, so the performance verification of the performance must be ensured. In this paper, 240kVA auxiliary power supply is developed. Also, performance of the auxiliary power supply manufactured through the analysis of various characteristics related to the auxiliary power supply was confirmed while operating the actual line.

철도차량 내 직류전원 다중공급 및 부하분담에 대한 수치적 해석

박상헌(Sang-Heon Park),이준일(Jun-il Lee),김완(Wan Kim),박종익(Jong-Ik Park) 한국철도학회 2015 한국철도학회 학술발표대회논문집 Vol.2015 No.10

철도차량은 다수의 차량이 연결되어 하나의 편성을 구성하며, 편성 내 개별적으로 위치하는 다수개의 보조전원장치가 차량의 부하를 분담한다. 보조전원의 교류계통은 보조전원장치 출력간 위상 차로 인해 각각 독립계통으로 운영하는 반면 직류계통은 기준전위를 공통으로 하고 각 보조전원장치 출력을 편성 내 하나의 모선으로 인통하여 병렬구조로서 운용한다. 이러한 병렬구조의 직류전원은 각 출력간 전위차로 인해 높은 전위 측에 부하편중 현상이 발생하므로 언급한 직류계통 모선을 절점의 개념으로 단순화 하는 것이 의미가 없다. 본 논문에서는 실제의 다중 병렬구조 직류전원에서 출력 전위가 상호 다른 조건하에 어떠한 요소가 부하분담에 영향을 미치는지 규정하고 이러한 요소를 수치적으로 예측하여 접근하는 방법에 대해 논하고자 한다. Railway vehicle is composed of a trainset comprised with a number of cars and several auxiliary power supply (hereafter APS), located independently within the trainset, feeds auxiliary power, sharing the loads of the trainset. AC system of auxiliary power is operated in separate system due to phase difference between AC outputs of APS, while, DC system is operated in parallel structure, which has common potential of the reference, and joined into DC bus. Because this kind of parallel structural DC power supply has unbalancing bias incurred by the potential difference between DC outputs, mentioned DC system’s bus could not be simplified only as a node. For actual multiple parallel structural DC power source, in case that their output potentials are mutually different, what kinds of factor affect the load sharing and the numerically predicting and approaching methodology on these factors will be handled in this paper.

WBG 소자를 적용한 보조전원장치의 고효율, 경량화 연구

조인호 ( In-ho Cho ),이재범 ( Jae-bum Lee ) 조선대학교 공학기술연구원 2017 공학기술논문지 Vol.10 No.2

Due to global climate change issues, there is a growing demand for systems throughout the industry. In the case of power conversion, studies have been actively conducted to change the structure of the power conversion circuit and to apply new power devices. In particular, the WBG (Wide Band Gap), which is newly emerged device in the market for developing semiconductor technology, has demonstrated advantages in applying for various aspects in comparison to the existing Si (Silicon) Semiconductor. Recent research centers in the railway industry are focusing on developing technologies suitable for railway vehicles by utilizing these new developments in railway countries such as Japan and Europe. This paper researches the WBG device that is applicable to the auxiliary power supplies (APS) in railway system, and analyzes the downsizing effects to APS in high-speed railway by conducting a theoretical analysis and simulation.

Input-Series Multiple-Output Auxiliary Power Supply Scheme Based on Transformer-Integration for High-Input-Voltage Applications

Meng, Tao,Ben, Hongqi,Wei, Guo The Korean Institute of Power Electronics 2012 JOURNAL OF POWER ELECTRONICS Vol.12 No.3

In this paper, an input-series auxiliary power supply scheme is proposed, which is suitable for high input voltage and multiple-output applications. The power supply scheme is based on a two-transistor forward topology, all of the series modules have a common duty ratio, all the switches are turned on and off simultaneously, and the whole circuit has a single power transformer. It does not require an additional controller but still achieves efficient input voltage sharing (IVS) for each series module through its inherent transformer-integration strategy. The IVS process of this power supply scheme is analyzed in detail and the design considerations for the related parameters are given. Finally, a 100W multiple-output auxiliary power supply prototype is built, and the experimental results verify the feasibility of the proposed scheme and the validity of the theoretical analysis.

도시철도차량의 보조전원장치 신뢰성 분석

윤화현(H. H. Yoon),신건영(K. Y. Shin),이희성(H. S. Lee) 한국도시철도학회 2016 한국도시철도학회논문집 Vol.4 No.3

Safety management system of the railway was introduced for the maintenance of the railway vehicle. Safety management system requests for the activities of reliability management system associated with the Reliability Centered Maintenance. Thus, in order to apply the process of RCM(reliability centered maintenance), auxiliary power supply unit is selected among the 13 major units in trainset. auxiliary power supply is the significant impact item in terms of service failure and the failure rate is also the highest. So, 59 components in auxiliary power supply unit were selected and statistical analysis was performed through analysis of the field data collected during commercial operation.. The maintenance work in the future should be based on the reliability analysis results. Also, the reliability analysis may be the starting point for RCM required by the safety management system of the railway.

Input-Series Multiple-Output Auxiliary Power Supply Scheme Based on Transformer-Integration for High-Input-Voltage Applications

Tao Meng,Hongqi Ben,Guo Wei 전력전자학회 2012 JOURNAL OF POWER ELECTRONICS Vol.12 No.3

In this paper, an input-series auxiliary power supply scheme is proposed, which is suitable for high input voltage and multiple-output applications. The power supply scheme is based on a two-transistor forward topology, all of the series modules have a common duty ratio, all the switches are turned on and off simultaneously, and the whole circuit has a single power transformer. It does not require an additional controller but still achieves efficient input voltage sharing (IVS) for each series module through its inherent transformer-integration strategy. The IVS process of this power supply scheme is analyzed in detail and the design considerations for the related parameters are given. Finally, a 100W multiple-output auxiliary power supply prototype is built, and the experimental results verify the feasibility of the proposed scheme and the validity of the theoretical analysis.

전동차용 고성능 IGBT형 보조전원장치 개발

김태완,서광덕 전력전자학회 1999 전력전자학회 논문지 Vol.4 No.6

본 논문에서는 새로운 개념으로 개발된 고성능 IGBT형 보조전원장치를 보인다. 새롭게 개발한 장치는 대용량 IGBT소자를 이용하여 직접형 3레벨 PWM 인버터로 시스템이 구성되고, 32bit DSP를 사용하여 시스템의 성능을 향상시킨 것이다. 기존의 것에 비해 무게와 크기는 40% 감소시켰고, 효율은 94% 이상, 소음은 65dBA 로 개선 시켰으며, 출력전압의 왜형율은 5%이하, 입력전압 및 부하변동 등의 과도상태시의 출력변동폭은 10%이하로 향상시켰다. This paper presents the h밍h performance [GBT type auxiliary jXlWer supply designt.'Cl by new concept. For t the simplification and higher performance, the direct :3 level PWlVl inverter using the high capacity IGBT and t the 32bit DSP are adopted. The cost as well as bulk and weight is appreciably reduced about 40% lower than t those of conventional one. the electrical efficiency above 94~) o and the audible noise level is less than 65dB. In a addition, the TIID(Total lIannonic Distortion) factor is below 5% an이 the voltage fluctuation on a transient s state is below 10%.w 10%.

LLC Resonant Converter with High Voltage Gain Using Auxiliary LC Resonant Circuit

Dong-Kwan Kim,Cheol-O Yeon,Jae-Hyun Kim,Yeonho Jeong,Gun-Woo Moon 전력전자학회 2015 ICPE(ISPE)논문집 Vol.2015 No.6

To design a LLC resonant converter optimally in the wide input voltage, the LLC resonant converter with a high voltage gain using an auxiliary LC resonant circuit is proposed. The auxiliary LC resonant circuit operates as a variable inductor, and it is represented as an effective magnetizing inductance combined with the magnetizing inductance. In the nominal state, the auxiliary LC circuit provides a high effective magnetizing inductance to minimize the primary circulating current for a high efficiency. During the hold-up time, the auxiliary LC circuit leads the effective magnetizing inductance to be reduced to obtain the high voltage gain. Therefore, an optimal design of the LLC resonant converter, which reduces the primary conduction loss and switching loss, is possible. The proposed converter is verified by experimental results with a 330- 390V input 56V/350W output prototype.