• 제목/요약/키워드: Electric propulsion

검색결과 434건 처리시간 0.026초

8200호대 전기기관차 추진시스템 모델링을 이용한 응답특성분석 (Response Characteristic Analysis using Modeling of Propulsion System for 8200 Electric Locomotive)

  • 정노건;장진영;윤차중;김재문
    • 전기학회논문지
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    • 제62권11호
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    • pp.1640-1646
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    • 2013
  • 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.

A Study on the Noise and Vibration Analysis of 200kW PMSM for Electric Propulsion Ship

  • Cho, Yang-Uk;Kang, Gyu-Hong
    • Journal of international Conference on Electrical Machines and Systems
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    • 제3권4호
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    • pp.389-393
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    • 2014
  • This paper presents one of the methods for design to reduce the noise and vibration of 200kW motor for electric propulsion ship. One of the important factors affecting vibration of the motor is the resonance. The natural frequency and natural mode of the 200kW motor is analyzed by using FEM tool and impact test equipment to avoid the resonance. Also, compare FEM result with impact test result to make a reliable FE model of 200kW motor. In order to find out the effect of the noise and vibration of the motor by electromagnetic excitation force, conduct electromagnetic-structure coupled analysis. These characteristics are much useful to design 200kW motor for electric propulsion ship.

직접토크제어에 의한 전기추진선박의 추진전동기 속도 및 토크제어에 관한 연구 (A Study on the Speed and Torque Control of Propulsion Motor for Electric Propulsion Ship by Direct Torque Control)

  • 김종수;오세진;김성환
    • Journal of Advanced Marine Engineering and Technology
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    • 제33권6호
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    • pp.946-951
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    • 2009
  • An induction motor based on DTC(Direct Torque Control) is being increasingly used in various industrial applications. DTC offers faster torque response and better speed control with lesser hardware and processing costs in compared with other controlled drives. This study was to evaluate performance of DTC for induction motor of electric propulsion ship. The simulation results indicated good speed and torque response from the low to middle speed range. Also, DTC has advantages such as the independency on motor parameter.

소형선박 선외기용 전기동력 시스템 연구 (A Study on Electric Power Propulsion System for Small Ship Outboard)

  • 박주식;원준희
    • 대한안전경영과학회지
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    • 제19권4호
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    • pp.309-316
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    • 2017
  • Recently, the outboard engine system of internal combustion engine is widely used in the field of small ship propulsion. However, the internal combustion engine has serious problems of energy depletion and environmental problems, so electric propulsion methods are being studied. In this paper, we have developed important motors and controllers of electric propulsion system for small marine outboard motors. The motor design was performed through the motor characteristics analysis method, and the 30Kw system was developed through the BEMF processing circuit and the power conversion circuit by the embedded microprocessor. This study was carried out through government supported projects and achieved quantitative targets through accredited institutions.

달탐사위성 추진시스템 (Propulsion System for Moon Explorer)

  • 한조영;이호형
    • 한국추진공학회:학술대회논문집
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    • 한국추진공학회 2008년도 제30회 춘계학술대회논문집
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    • pp.155-158
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    • 2008
  • 달탐사위성(궤도선) 1호는 2017년 착수 2020년 발사하고, 달탐사위성(착륙선) 2호는 2021년 착수 2025년 발사를 추진하게 되어 있다. 따라서 성공적인 임무 달성을 위해서는, 달탐사위성 추진시스템에 대한 기초 연구가 매우 중요한 시점이다. 본 연구에서는 달탐사위성에 적용 가능한 추진시스템에 대한 개념적인 타당성 및 비교 연구를 제시한다. 단일/이원/전기 추진시스템의 활용가능성을 외국의 사례와 비교/분석하고, 기술적인 장단점을 검토하여 달탐사위성 추진시스템으로 가능한 후보군을 제시한다.

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전기동력 무인기용 하이브리드 추진시스템 비행시험 (Flight Test of Hybrid Propulsion System for Electrically Powered UAV)

  • 박부민;김근배;차봉준
    • 한국추진공학회지
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    • 제17권4호
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    • pp.49-55
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    • 2013
  • 한국항공우주연구원 (이하 항우연)에서 개발중인 중형 전기동력 무인기 EAV2의 추진시스템에 대한 비행시험결과에 대하여 기술 하였다. EAV2는 날개 길이 6.9 m, 무게 18 kg의 저속 장기 체공형 무인기이다. 전기 동력원으로는 태양전지, 연료전지, 배터리의 세 가지를 동시에 사용한다. EAV2는 2012년 6월에 22시간 이상 체공 비행에 성공하였다. 시험 결과, 전기추진 시스템은 비행 중 일어나는 여러 상황에서 필요한 동력을 성공적으로 공급하였으며, 각 동력원들은 설계된 목적에 부합하게 작동되었다.

상단 추진 시스템에 적용을 위한 전기펌프 사이클의 국외 연구 동향 (Overseas Research Trends of an Electric-Pump Cycle for Application in Upper-Stage Propulsion Systems)

  • 기원근;이재청;이형진;노태성;허환일
    • 한국추진공학회지
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    • 제24권1호
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    • pp.64-77
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    • 2020
  • 전기모터를 이용하여 액체로켓 엔진의 펌프를 구동하는 추진제 공급 시스템인 전기펌프 사이클은 시스템 구성이 간단하고 공급 유량 및 압력 제어가 용이한 장점이 있다. 본 논문에서는 전기펌프 사이클의 국외 연구 동향을 조사하여 분석하였다. 또한 연구개발 국가, 수행기관, 적용 대상, 엔진 추력, 펌프 압력상승, 모터 동력, 회전수 등을 정리하였다. 그 중 0.445~2.2 kN의 추력 범위를 가지는 상단 추진 시스템에 적용한 국외 연구의 설계 변수들은 국내에서 유사한 전기펌프 사이클 연구 시 활용할 수 있을 것이다.

차세대전동차 추진시스템 개발 및 시험 (Development and Testing of Next Generation Electric Vehicle Propulsion System)

  • 이장무;이한민;김길동;노애숙
    • 대한전기학회:학술대회논문집
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    • 대한전기학회 2011년도 제42회 하계학술대회
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    • pp.2194-2195
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    • 2011
  • The propulsion system of next generation electric vehicle is different from the structure and control methods compared with conventional induction motor vehicles by applying an interior permanent magnetic synchronous motor. Permanent magnet motor should be controlled by each individual motor, propulsion device have 1C1M structure by a single inverter to control a single motor.

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선박용 전기추진시스템의 단락상정사례의 전력특성 분석 (Power Characteristic Analysis of Assumed Short Circuit Instance of Electric Ship Propulsion System)

  • 전원;왕용필;정종화;류승각;정상용
    • Journal of Advanced Marine Engineering and Technology
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    • 제32권2호
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    • pp.323-329
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    • 2008
  • This paper deals with modeling and characteristic analysis of a large-powered electric ship propulsion system. Particularly, system modeling in accordance with the required shipping performance, building-up the equivalent circuit and the power analysis based on load flow have been performed. In addition, abnormal operating condition of short-circuit network is considered for investigating the safety of system components under the over-load condition. Furthermore, protective device like circuit breaker has been specified in order to make the entire system operate normally in case of short-circuit emergency.

전기추진선의 최대추력 운항을 위한 추력손실 억제에 관한 연구 (Suppression of the Thrust Loss for the Maximum Thrust Operation in the Electric Propulsion Ship)

  • 김소연;윤영두;설승기
    • 대한조선학회논문집
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    • 제44권3호
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    • pp.238-247
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    • 2007
  • This paper presents the thrust loss suppression algorithm in the electric propulsion ship. The thrust loss due to cavitation can be regarded as the disturbance torque. The disturbance torque is estimated by means of the disturbance observer. Considering the estimated disturbance torque, the speed reference of the propeller is modified to suppress the thrust loss. The experimental results which performed in the cavitation tunnel with electric machine operating system and its controller will be shown to verify the proposed algorithm.