Back to results
US 7,965,003 B2Granted
Motor drive system for railway vehicle
AssigneeKabushiki Kaisha Toshiba
InventorsYosuke Nakazawa, Shinichi Noda, Kazuaki Yuuki, Kazuaki Fukuda
Life of this patent
Estimating the term…
Abstract
A motor drive system 10-1 for a railway vehicle is capable of reducing the weight of wiring, electromagnetic noise, and manufacturing cost. The motor drive system includes an inverter 11. The inverter is configured to control a motor 13-1 and is divided into at least two separate inverter units that are arranged integrally with the motor.
Claims2
A motor drive system for a railway vehicle, comprising:
- a motor to be controlled;
- a motor shaft fixed to a center of the motor;
- a motor frame surrounding an outer surface of the motor, and including a plurality of sealed areas therein;
- an inverter configured to control the motor and that is divided into at least two mechanically separate inverter units, each inverter unit being arranged in a respective of the sealed areas inside of the motor frame;
- a plurality of cooling fins, each cooling fin being fixed on an outer side of the separated inverter units to face outside;
- a cooling fan fixed at an end of the motor shaft outside of the motor frame to rotate with the motor shaft;
- and
- a cooling air guide arranged at an outside of the motor frame so as to guide a cooling air from the cooling fan along an outer surface of the motor frame to each cooling fin.
5 more elements
Dependencies are inferred from the claim text.