Electric rolling stock driving apparatus

Abstract

To provide an electric rolling stock driving apparatus allowing for an enhanced reliability of rolling stock system, a main motor 14 for driving an electric rolling stock, a VVVF inverter 13 for driving the main motor, and a brake controller 12 for controlling braking forces of wheels 16 are provided within a driving truck 9, allowing for an improvement in reliability of a rolling stock system that otherwise might have deficiencies such as an increased rolling stock manufacture term or an increased trouble restoration time by a complicated implementation of wiring due to an arrangement according to a relevant art in which, for driving a rolling stock, associated apparatuses are separately mounted to a car body and a truck.

1 . An electric rolling stock driving apparatus comprising:
 a car body configured to accommodate passengers and/or goods; and   a driving truck provided under a floor of the car body, to which a main motor configured to drive an electric rolling stock, a VVVF inverter configured to drive the main motor, and a brake controller configured for control of braking forces acting on wheels are mounted.   
   
   
       2 . The electric rolling stock driving apparatus as claimed in  claim 1 , wherein a trailing truck having neither main motor nor VVVF inverter mounted thereto is provided under the car, and the total power output as a train set is adjustable by a number of drive and trailing trucks. 
   
   
       3 . The electric rolling stock driving apparatus as claimed in  claim 2 , wherein the driving truck is attachable to an attachment portion for the trailing truck. 
   
   
       4 . The electric rolling stock driving apparatus as claimed in  claim 1 , wherein a connector is provided at a connecting portion between the driving truck and the car body, the connector having a dc power supply line, a ground line and a braking piping integrated thereto. 
   
   
       5 . The electric rolling stock driving apparatus as claimed in  claim 1 , wherein a single driving truck is provided with a single main motor. 
   
   
       6 . The electric rolling stock driving apparatus as claimed in  claim 1 , wherein a common power supply configured for dc power supply for VVVF inverters is mounted on the car body side, the common power supply being common to the VVVF inverters mounted to a plurality of driving trucks, respectively. 
   
   
       7 . The electric rolling stock driving apparatus as claimed in  claim 6 , wherein the common power supply is disposed on a roof of the car body. 
   
   
       8 . The electric rolling stock driving apparatus as claimed in  claim 1 , wherein the main motor, the VVVF inverter and the brake controller are mounted within the driving truck as a unit. 
   
   
       9 . The electric rolling stock driving apparatus as claimed in  claim 1 , wherein a command transmitter configured for radio transmission of a command to the brake controller or the VVVF inverter mounted to the driving truck is installed on the car body side. 
   
   
       10 . The electric rolling stock driving apparatus as claimed in  claim 1 , wherein a negative side at a dc side of the VVVF inverter is connected to a grounded potential point in the driving truck. 
   
   
       11 . The electric rolling stock driving apparatus as claimed in  claim 1 , wherein an energy accumulator is installed under a floor of the car body. 
   
   
       12 . The electric rolling stock driving apparatus as claimed in  claim 1 , wherein the car body is a double decker. 
   
   
       13 . The electric rolling stock driving apparatus as claimed in  claim 1 , wherein the car body has a low floor design. 
   
   
       14 . The electric rolling stock driving apparatus as claimed in any one of  claims 11  to  13 , wherein the driving truck is a coupling truck disposed right below a coupling portion of a plurality of the car bodies in a train set.