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  HITACHI : Easy Maintenance and Environmentally-friendly Train Traction System 

  http://www.hitachi.com/rev/field/industriasystems/2005041_12592.html

  Hitachi, Ltd. has been developing converter-inverter systems and auxiliary power converters to which they have applied vector control techniques and high-voltage IGBTs (insulated gate bipolar transistors), ... airless line breakers, and electronic master controllers. These are applied to make train traction systems more functional, to make maintenance easier, and to reduce energy consumption. The need is growing for diesel-powered train traction systems that are easy to maintain, highly efficient, and environmentally friendly. Moreover, the demand exists for much smaller traction systems for electric trains. Therefore Hitachi developed hybrid propulsion systems for diesel-powered trains to which the traction systems techniques for electric trains was applied, and small cooling equipment that uses water circulation. Both of them were developed jointly with East Japan Railway Company (JR-East). In addition, Hitachi developed sensorless speed vector control that eliminates the need for a spee   [More...] [Less...]

  First added: 24 July 2008, by: Laura Cage  [Report as spam]

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  Tags:  ets, hitachi, rail, sustainable rail, traction maintenance , traction systems   [More...] [Less...]