Results 261 to 270 of about 26,699 (301)
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Journal of Engineering for Power, 1981
The unique torque speed characteristic of the single-shaft gas turbine requires that it have a continuously variable-ratio transmission for successful application to automotive use. This paper discusses the development of a novel mechanical transmission which has the power density required for highway vehicles.
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The unique torque speed characteristic of the single-shaft gas turbine requires that it have a continuously variable-ratio transmission for successful application to automotive use. This paper discusses the development of a novel mechanical transmission which has the power density required for highway vehicles.
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5th IET Professional Development Course on Railway Electrification Infrastructure and Systems (REIS 2011), 2009
This paper presents an overview of railway traction systems. Railway vehicles are characterised by low rolling resistance, and high inertia, therefore the traction drives must have suitable capabilities to deliver the required vehicle performance. Both AC and DC motors are in common use in the railway sector, but have very different power delivery ...
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This paper presents an overview of railway traction systems. Railway vehicles are characterised by low rolling resistance, and high inertia, therefore the traction drives must have suitable capabilities to deliver the required vehicle performance. Both AC and DC motors are in common use in the railway sector, but have very different power delivery ...
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Application of aggregate traction drives for locomotives with increased traction properties
Transport of the Urals, 2023In order to implement the increased traction power of locomotives, rational solutions of traction drives with an aggregate layout are considered as a more technologically advanced alternative to integrated traction drives of foreign companies. As a result of the know-why analysis, the following was established: the use of an integrated circuit is ...
A. S. Kosmodamianskiy +4 more
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Proceedings of the Institution of Electrical Engineers, 1975
A d.c. traction drive is described comprising a synchronous motor, which may be brushless, supplied by a forcecommutated voltage-source invertor with thyristor firing controlled by rotor position. This implies control of load angle. An analytical basis for system design is presented, and the required ranges of variation of load angle to obtain motoring
B.J. Chalmers, K. Pacey, J.P. Gibson
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A d.c. traction drive is described comprising a synchronous motor, which may be brushless, supplied by a forcecommutated voltage-source invertor with thyristor firing controlled by rotor position. This implies control of load angle. An analytical basis for system design is presented, and the required ranges of variation of load angle to obtain motoring
B.J. Chalmers, K. Pacey, J.P. Gibson
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Traction drives and converters
2nd IEE Residential Course on Railway Electrification Infrastructure Systems, 2005This paper describes the electrical traction drives available for electric & diesel-electric locomotives, multiple-unit trains and light rail vehicles. It commences with a review of the function of traction converters and consideration of the available converter power electronic switching devices.
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Inverters [traction propulsion drives]
IET 13th Professional Development Course on Electric Traction Systems, 2014Traction propulsion inverter drives, particularly the VSI, are expected to continue to be the most popular option for the foreseeable future. Technical advances in semiconductor switching devices and advanced microprocessor based controllers have contributed significantly to making such drives economic and reliable.
R. Faddoul, A.C. Lancaster
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The effect of surface texture on traction performance in a traction drive
JSAE Review, 2003In a traction drive, which transmits driving force by the shear strength of a traction fluid, surface texture is thought to be an important factor affecting traction performance. Therefore, the effect of surface texture on traction performance was studied using a two-roller tester.
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AC drive with particular reference to traction drives
APSCOM-97. International Conference on Advances in Power System Control, Operation and Management, 1997New developments in the design of high speed electric trains are discussed, with reference to the AC drive system. The three level converter-inverter system applying advanced IGBTs, which is implemented in the latest Shinkansen train sets operating in eastern Japan between Tokyo and Nagano, is described.
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AC Drives in Traction Applications
IEEE Transactions on Industry Applications, 1986DC motors and drives have previously been the choice for traction applications. The desire to use an induction motor in similar applications has been unfulfilled due to the absence of a suitable ac drive controller that could fully exploit the economical, rugged, and simple ac induction motor.
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Driving optimization of IGBT devices for traction applications
2005 European Conference on Power Electronics and Applications, 2005A new optimization strategy for driver circuits in high power-high voltage IGBTs is proposed. Main features of such an approach are the reduction of the switching losses and active control of the device overvoltage. To confirm the proposed approach, an auxiliary circuit has been realized and used to equip an industrial driver, then experimental tests ...
CACCIATO, MARIO +5 more
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