Drive system for railway vehicle

Details Drive system for railway vehicle Drive system for railway vehicle

1990-10-19

1992-05-26

Shoop, Jr., William M.

Electricity: motive power systems

Plural, diverse or diversely controlled electric motors

Slipping and/or racing control for electric motors

318 67, 318 71, 318 79, 36442605, 36442603, B60L 1532

Patent

active

051171635

ABSTRACT:
A drive system with slip control for railway vehicles with two or more dc drive motors and with common control of the motor armature currents and a logic unit to which are input a measured signal which indicates the armature current intensity of the motor driving the axle having the best adhesion which is usually the trailing axle motor. The measured signal and an amplification signal are multiplied by each other and the product signal issued in a feedback loadsharing system to control the other motors such that the torque of the other motors increased to a maximum allowed level, the trailing axle then rolling very close to ground speed without slipping. This speed is used as a measure of the true speed, which in turn controls the system for loadsharing such that the vehicle can be controlled to maximum tractive effort without causing slipping axles.

REFERENCES:
patent: 1857760 (1932-05-01), Loughridge
patent: 4095147 (1978-06-01), Mountz
patent: 4347569 (1982-08-01), Allen et al.
patent: 4709194 (1987-11-01), Yagi et al.
patent: 4825131 (1989-04-01), Nozaki et al.
patent: 4896090 (1990-01-01), Balch et al.
patent: 4950964 (1990-08-01), Evans

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