• Title/Summary/Keyword: Power Train

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The Conceptual Design of Korea High Speed Train System (한국형 고속전철 차량시스템의 개념설계)

  • 김경택;정경렬
    • Proceedings of the KSR Conference
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    • 1999.11a
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    • pp.172-180
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    • 1999
  • The major subject of this paper is to develop the concept fur a Korea high speed train system and recommend to train configuration. High speed train configurations are basically concerned traction power(train configurations with concentrated; CPT or distributed Power system: DPT) and train design(single car as compared with articulated bogies). The result of configuration, a advantages and disadvantaged were necessitated by different train configurations; -distributed underfloor power have an increased length for the seats by 15% as compared with the concentrated power trait - articulated trainsets are characterised by less of number of bogies and reduced values of mass, train resistance, noise and vibration. from the result, the optimized train concept combining high seat capacity per train length with low weight and train resistance is 400m long, single -floor train composed of two symmetrically arranged half trainsets. Therefore, at this work recommended distributed train system However, the final decision of Korea high speed train configuration was concentrated power train and articulated bogie system. The configuration of trainset was 20cars included 2 power cars, 4 motorized cars and 14 trailer cars.

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The spline design of the power-train for the bicycle adopting the belt

  • Young-Woong Kwon
    • International journal of advanced smart convergence
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    • v.13 no.3
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    • pp.267-272
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    • 2024
  • Bicycles and electric bicycles, which are short-distance vehicles, do not generate exhaust gases that cause environmental pollution. Rather, they are in the spotlight because they have exercise effects that help the health of the human body while operating the bicycle. Power-trains of bicycle have traditionally used chains and sprockets, and they still have the largest market share. In the previous study, a new type of bicycle power-train was proposed. The power transmission medium of the proposed power-train device employs a belt. The core of the proposed new bicycle power-train is the configuration of the pulley. The core component of the proposed power-train pulley is a spline. In this study, the basic shape of the proposed power-train model and the basic role and design principles of the spline used in the configuration of the model were studied. The target splines are linear spline used for the central axis of the power-train pulley and helical spline for shifting. The linear spline is a basic shape, and the helical spline is an equation that can calculate the inclination angle and the shift range.

The Critical Speed Analysis of Gear Train for Hydro-Mechanical Continuously Variable Transmission (기계유압식 무단변속기용 기어트레인에 대한 위험속도 해석)

  • Bae, Myung Ho;Bae, Tae Yeol;Choi, Sung Kwang
    • Journal of Drive and Control
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    • v.14 no.4
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    • pp.71-78
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    • 2017
  • The power train of hydro-mechanical continuously variable transmission (HMCVT) for 8-ton class forklift includes hydro-static units, hydraulic multi-wet disc brake & clutches and complex helical & planetary gears. The helical & planetary gears are key components of HMCVT's power train wherein strength problems are the main concerns including gear bending stress, gear compressive stress, and scoring failure. Many failures in power train gears of HMCVT are due to the insufficient gear strength and resonance problems caused by major excitation forces, such as gear transmission error of mating gear fair in the transmission. In this study, wherein excitation frequencies are the gear tooth passing frequencies of the mating gears, a Campbell diagram is used to calculate the power train gears' critical speeds. Mode shapes and natural frequencies of the power train gears are calculated by CATIA V5. These are used to predict resonance failures by comparing the actual working speed range with the critical speeds due to the gear transmission errors of HMCVT's power train gears.

Development of Load Modeling of Locomotive using Velocity and Consumed Power (속도와 소비전력을 이용한 전기차의 부하모델 개발)

  • Kim Joorak;Jang Donguk
    • Proceedings of the KIEE Conference
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    • summer
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    • pp.1352-1354
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    • 2004
  • The accurate analysis on railway traction power system should be carried out a load forecast preferentially. Commonly, it has been performed through Train Performance Simulator (TPS). In the study focused on velocity or location of train, however, the electric power consumption have been computed by converting mechanical power according to given velocity. Therefore, this paper presents a development of a mathematical model for electric load. The proposed load model is expressed as polynomial to reflect the influence of variance of train speed, that is, the model expresses the power as a function of train speed. in this study, method of the least squares method is used to find each coefficient and field test is performed to acquire data, electric power and speed of train in commercial running line.

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The Power-train for the Bicycle adopting the Timing belt

  • Bu-Seob Sien;Dong-Gu Sien;Sung-Cheon Park;Young-Woong Kwon
    • International journal of advanced smart convergence
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    • v.13 no.1
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    • pp.201-205
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    • 2024
  • Currently, the most important issue on the earth is global warming, which causes climate change and leads to disasters. For this reason, each country is focusing on renewable energy, carbon neutrality, environmentally friendly energy and transportation. Bicycles used as short-distance vehicles do not emit gases harmful to the human body that pollute the Earth's atmosphere. Also, the use of bicycles has the effect of improving the health of people, and each country is designing a short distance transportation network using bicycles. In this study, we propose a model of a bicycle power-train that can use a belt as a power transmission medium. The basic principles and methods for applying the proposed new type of power-train to bicycles are presented.

A review of the train position detection method for neutral section with energized condition (무절연구간을 위한 열차위치검지방식 검토)

  • Lee, Tae-Hoon;Lee, See-Bin;Hong, Hyun-Pyo;Lee, Hee-Soon;Park, Ki-Bum
    • Proceedings of the KSR Conference
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    • 2010.06a
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    • pp.1100-1105
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    • 2010
  • The high speed line and conventional line are a single-phase AC feeding system; and power supplies of different phases meet at SS(SubStation)s or SP(Sectioning Post)s. These sections should be negotiated with the main circuit breaker in the traction vehicle switched off, whereby the length of the neutral zone prevents the pantographs shunting adjacent overhead line section. In order for electric railway vehicles to make power running there, there must be a power supply changeover section (approx. for 1km), where a changeover switch changes a power supply to the other power supply of a train running direction sequentially. For a thorough changeover switching control, the precise train position detection is necessarily required. In this paper, to realize the ground-based train position detection method, configuration scheme of train position detection equipment is suggested by using track circuit and axle counter.

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Vibration Mode Analysis of Power Train on a Rear Wheel Drive Car (후륜구동차량의 동력전달장치의 고유진동형 분석)

  • Stuehler, Waldemar;You, Chung-Jun
    • Proceedings of the Korean Society for Noise and Vibration Engineering Conference
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    • 2000.06a
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    • pp.1894-1899
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    • 2000
  • The Roadway caused through Power Train engine vibration and bad ride comfort. It is very important to analyze the vibratory characteristics. The mathematical models on the Power Train, which is composed of engine-/transmission block, universal joint shaft, differential, rear axle arm and wheels, are developed and is verified by the experiments. This Paper describes the coupling influence occurred through a complete drive system for the power train. Dies study is carried out computationally with a calculation program and experimentally with the aid of the mode analysis.

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Development of a Train Performance Simulation S/W for The Performance Analysis of High Speed Railway System(2) (고속전철 시스템 성능해석을 위한 열차 주행시뮬레이션 S/W 개발(2))

  • Lee, Tae-Hyung;Hyun, Seung-Ho;Chung, Heuing-Chai;Hwang, Hee-Soo
    • Proceedings of the KIEE Conference
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    • 2000.07b
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    • pp.1381-1383
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    • 2000
  • A multi-train operation simulation software is under development, in this G7 Project for a High Speed Train System, to simulate the running performance, power consumption, signalling and operation. In the first stage, a Train Performance Simulation (TPS) software is introduced in this paper. This is a core module of whole system and gives some parameters of a train, e.g., its position, speed traction and braking power and electric power system state, etc. In this paper, calculation technique was used for voltage drop at the train's positions and major posts along the catenary line. The final program will be used as an evaluation tool for system performance in constructing a new line or introducing a new train system.

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A Study on the Development of the Train Wind Rate Prediction Program in Tunnel of the Subway (지하철 터널내 열차풍 예측 프로그램 개발에 관한 연구)

  • Kim, J.R.;Choi, K.H.
    • Journal of Power System Engineering
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    • v.3 no.1
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    • pp.38-44
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    • 1999
  • Subway is one of the most important transportation and its facilities are increased by the drift of population to cities in these days. But heat generation results from lighting, human and traffic increase in subway, half-closed space, gives uncomfortable sense to the subway passengers. Therefore, natural ventilation by piston effect is done to relieve uncomfortable sense. But train wind by piston effect gives uncomfortable sense to the subway passengers, too. So the numerical calculation of inflow and outflow amounts is important to predict thermal environment and reduce train wind. In case of actual survey of train wind in target station, the amount of train wind are about $3100m^3/train$ at the minimum, about $6000m^3/train$ at the maximum, about $4200m^3/train$ on average. When comparison between simulation for train wind prediction and actual survey for accuracy was done train wind prediction program showed similar results.

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A Modeling and Analysis of Electric Railway System Using Constant Power Model (정전력모델을 이용한 전기철도 시스템의 회로 모델링 및 해석기법)

  • 홍재승;김주락;오광해;창상훈;김정훈
    • Proceedings of the KSR Conference
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    • 2000.05a
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    • pp.116-122
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    • 2000
  • This paper presents a simulation method with constant power model for the train load. In power system simulation loads could be modeled as a constant power, constant current, constant Impedance or a function of voltage and frequency. At this time, however, representing a train load as the function is difficult because of the lack of data. Therefore as a first step, simulation method with a constant power model fer a train is studied, and the test result is compared with the simulation result using the constant Impedance model.

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