DRIVE DEVICE FOR RAILWAY VEHICLE

WIPO Patent Application WO/2011/152383

A1

Generally, in the control device of a railway vehicle, an inverter device (4) is controlled on the basis of the direct current link voltage (Vfc) at both ends of a filter capacitor (3). In the disclosed circuit configuration, a direct current voltage that is impressed on the inverter device (4) during regeneration is made to be the sum of the voltage (Vb) of a power accumulation device (6) and the voltage (Vs) of overhead wires, so by only detecting the direct current link voltage (Vfc), the voltage (Vb) of the power accumulation device (6) and voltage (Vs) of the overhead wires cannot be separated and the state of light load regeneration cannot be determined. In a circuit configuration where a capacitor can connect to the inverter device (4) in series, a voltage sensor that can detect overhead wire voltage (Vs) is positioned between a current collector (1) and a ground connection and the power accumulation device (6) is controlled on the basis of the detection results of the voltage sensor.

ARAKI DAIJIRO (JP)
SHIMADA MOTOMI (JP)
TACHIHARA SHUICHI (JP)
HORIE AKIRA (JP)
NAGASU MASAHIRO (JP)

PCT/JP2011/062454

December 08, 2011

May 31, 2011

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HITACHI LTD (JP)
ARAKI DAIJIRO (JP)
SHIMADA MOTOMI (JP)
TACHIHARA SHUICHI (JP)
HORIE AKIRA (JP)
NAGASU MASAHIRO (JP)

B60L9/18; B60L7/14; B60L11/18

JP2008228359A	2008-09-25
JP2006094613A	2006-04-06
JP2009183078A	2009-08-13
JP2008228451A	2008-09-25
JP2009183079A	2009-08-13
JP2005278269A	2005-10-06
JP2009183078A	2009-08-13

Patent Corporate Body Dai-ichi Kokusai Tokkyo Jimusho (JP)
The first international patent firm of a patent business corporation (JP)

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