Traction drive

Details Traction drive Traction drive

2005-09-06

2005-09-06

Jules, Frantz F. (Department: 3617)

Railway rolling stock

Locomotives

Powered bogie

C105S034200, C105S049000

Reexamination Certificate

active

06938555

ABSTRACT:
A traction drive, in particular for rail cars, includes a permanent-excited synchronous motor, a traction converter with a pulsed inverter for powering the motor, and ohmic brake resistors. Cross-over switches are connected with a corresponding input terminal of the motor and can switch the input terminal between a corresponding output terminal of the pulsed inverter (for travel) and a terminal of a corresponding brake resistor (for braking). The brake resistors are electrically connected in a star configuration. The traction drive can operate with different supply voltages. There is no longer a need for a mechanical brake, and flat spots on the wheels can be prevented.

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patent: 60187202 (1985-09-01), None

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