• Title/Summary/Keyword: CNG hybrid system

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A Simulation Study of the Performance of a Propulsion Equipment for Bimodal Tram (바이모달 트램의 추진장치 성능 모의)

  • Bae, Chang-Han;Mok, Jai-Kyun;Chang, Se-Ky;Lee, Kang-Won
    • Journal of the Korean Society for Railway
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    • v.12 no.1
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    • pp.122-128
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    • 2009
  • A bimodal low-floor tram is designed to provide the flexibility of bus and the punctuality of trains together to the passengers. The propulsion equipment of the bimodal tram is a series hybrid type using a set of CNG engine generator and Li-polymer battery. The present paper describes the specifications of the propulsion system in the bimodal tram which was drawn by a desirable driving cycle. In addition, it shows how the propulsion system of the bimodal tram can be controlled. With using a computer simulation tool of hybrid vehicles, ADVISOR, the performance of the bimodal tram was verified.

Development of a Series Hybrid Propulsion System for Bimodal Tram (바이모달 트램용 직렬형 하이브리드 추진시스템 개발)

  • Bae, Chang-Han;Lee, Kang-Won;Mok, Jai-Kyun;You, Doo-Young;Bae, Jong-Min
    • The Transactions of the Korean Institute of Power Electronics
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    • v.16 no.5
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    • pp.494-502
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    • 2011
  • Bimodal tram is designed to run on a dedicated path in automatic mode using a magnetic track system in order to realize a combination of the accessibility of a bus and the constant regularity of a railroad. This paper presents design and test results of the series hybrid propulsion system of the bimodal tram on both test track and public road, which uses CNG (Compressed Natural Gas) engine and Lithium polymer battery pack. This paper describes the real-time data measuring equipment for the series hybrid propulsion system of the bimodal tram. Using this measurement equipment, the performance of the prototype vehicle's driving on test track and public road was verified and the fuel consumption and the efficiency of CNG engine have been investigated.

Development of measurement equipment for hybrid propulsion system of bimodal tram (바이모달 트램의 직렬형 하이브리드 추진시스템 계측장비 개발)

  • Bae, Chang-Han;Chang, Se-Ky;Mok, Jai-Kyun
    • Proceedings of the KSR Conference
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    • 2010.06a
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    • pp.241-248
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    • 2010
  • A bimodal low-floor tram can provide the punctuality of trains and the flexibility of bus together to the passengers. Its propulsion system is a series hybrid type using a set of CNG engine generator and Li-polymer battery. This paper presents a development of the measurement equipment for fine-tuning of a series hybrid propulsion system of bimodal low-floor tram. Its configuration schemes are described and certified using the measurement data of bimodal low-floor tram.

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Design study of series hybrid propulsion system for a bimdal tram (바이모달 트램의 직렬형 하이브리드 추진계 성능검토)

  • Bae, Chang-Han;Chang, Se-Ky;Mok, Jai-Kyun;Lee, Kang-Won;Byun, Yeun-Sub
    • Proceedings of the KSR Conference
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    • 2008.06a
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    • pp.1968-1977
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    • 2008
  • A bimodal low-floor tram is designed to provide the flexibility of bus and the punctuality of trains together to the passengers. Its propulsion system is a series hybrid type using a set of CNG engine generator and Li-polymer battery. The present paper describes the specifications of the propulsion system in the bimodal tram which was drawn by a desirable driving cycle. In addition, it shows how the propulsion system of the bimodal tram can be controlled. With using a computer simulation tool of hybrid vehicles, ADVISOR, the performance of the bimodal tram was verified.

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A Study on the Development of a Hybrid Fiber Reinforced Composite for a Type 4 CNG Vessel (CNG용 Type 4 하이브리드 섬유 복합재 용기 개발에 대한 연구)

  • Cho, Sung-min;Cho, Min-sik;Jung, Geunsung;Lee, Sun-kyu;Lee, Seung-kuk;Park, Ki-dong;Lyu, Sung-Ki
    • Journal of the Korean Society of Manufacturing Process Engineers
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    • v.16 no.4
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    • pp.97-103
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    • 2017
  • The objective of this study is to develop and commercialize an on-board fuel storage system for CNG vehicles. A type 4 vessel is made of resin-impregnated continuous filament windings on a polyamide (PA6) liner. In particular, this study localized the PA6 liner's fabrication and development. To analyze the filament winding, a specimen test was performed, and the results were verified values obtained using finite element analysis. In this study, the filament winding and fibers were optimized for a 207 bar composite cylinder in a compressed natural gas vehicle.

Test of the Series Hybrid Propulsion Power Unit of a Bimodal Tram (바이모달 트램의 직렬형 하이브리드 추진 전원장치 시험)

  • Bae, Chang-Han;Chang, Se-Ky;Mok, Jai-Kyun;Lee, Kwang-Won;Kim, Yong-Tae;Bae, Jong-Min
    • Proceedings of the KSR Conference
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    • 2009.05a
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    • pp.930-939
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    • 2009
  • A bimodal tram is being developed to combine the flexibility of a bus with the punctuality of a train. The propulsion system is a series hybrid type using a set of CNG engine generator and Li-polymer battery. This paper presents the experimental results of the series hybrid propulsion power unit using an active loader which can simulate powering and regenerative braking conditions of the propulsion equipments continuously. The power sharing scheme between PWM converter and a battery pack has been observed. The measurement results of DC link voltage and SOC(State Of Charge) of battery pack are presented.

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Development and Application of LPB Management System for Bimodal Tram (바이모달트램용 LPB Management System 개발 및 적용)

  • Lee, Kang-Won;Mok, Jai-Kyun
    • The Transactions of the Korean Institute of Electrical Engineers P
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    • v.64 no.4
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    • pp.231-235
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    • 2015
  • Bimodal Tram developed by KRRI is driven by a series Hybrid propulsion system which has both the CNG engine, generator and LPB(Lithium Polymer Battery) pack. It has three driving modes; Hybrid mode, Engine mode and Battery mode. Even in case of Battery mode, LPB pack to get enough power to drive the vehicle only by itself onsists of 168 LPB cells(80Ah per lcell), 650V. It is important thing to manage LPB pack in a right way, which will extend the lifetime of LPB cells and operate in the hybrid mode effectively. This paper has shown the development of battery management system(12 BMS, 1 BMS per 14cells) to manage LPB pack which is connected with CAN(Controller Area Network) each other and measure the voltage, current, temperature and also control the cooling fan inside of LPB pack. Using the measured data, BMS can show the SOC(State of Charge), SOH(State of Health) and other status of LPB pack including of the cell balancing.

Development of BMS applying to LPB Pack in Bimodal Tram (바이모달트램용 LPB팩에 적용될 Battery Management System 개발)

  • Lee, Kang-Won;Chang, Se-Ky;Nam, Jong-Ha;Kang, Duk-Ha;Bae, Jong-Min
    • Proceedings of the Korean Institute of Electrical and Electronic Material Engineers Conference
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    • 2009.06a
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    • pp.477-477
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    • 2009
  • Bimodal Tram developed by KRRI is driven by a series Hybrid propulsion system which has both the CNG engine, generator and LPB(Lithium Polymer Battery) pack. It has three driving modes; Hybrid mode, Engine mode and Battery mode. Even in case of Battery mode, LPB pack to get enough power to drive the vehicle only by itself onsists of 168 LPB cells(80Ah per lcell), 650V. It is important thing to manage LPB pack in a right way, which will extend the lifetime of LPB cells and operate in the hybrid mode effectively. This paper has shown the development of battery management system(12 BMS, 1 BMS per 14cells) to manage LPB pack which is connected with CAN(Controller Area Network) each other and measure the voltage, current, temperature and also control the cooling fan inside of LPB pack. Using the measured data, BMS can show the SOC(State of Charge), SOH(State of Health) and other status of LPB pack including of the cell balancing.

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Aging Diagnosis by Analyzing The Electrical Characteristics of Series Hybrid Generator (직렬형 하이브리드용 발전기의 전기적 특성분석 및 열화진단)

  • Lee, Kang-Won;Jang, Se-Ky
    • Proceedings of the KSR Conference
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    • 2011.10a
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    • pp.1439-1443
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    • 2011
  • Bimodal Tram is the new conceptual and environmental-friendly public transportation which adopted series hybrid system. The generator driven by CNG engine supplies the electric power to Battery and traction motor. The generator installed on the vehicle will experience the mechanical vibration and electrical transient variation. Those may cause some defects on the generator which will be the hazardous effects to the vehicle. This paper has investigated the possibility to find out some diagnostic features for the defects of generator through the voltage and current generated from it. Those were analyzed in both time and frequency regions. For the next, more works will be needed to complete the purpose of this paper.

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