Torque maximization and vibration control for AC locomotives

Details Torque maximization and vibration control for AC locomotives Torque maximization and vibration control for AC locomotives

1997-07-09

1998-11-24

Ip, Paul

Electricity: motive power systems

Motor load, armature current or force control during...

318 52, 318 71, 180197, B60K 100, B61C 1508

Patent

active

058412549

ABSTRACT:
A traction control system for an ac locomotive optimizes traction performance by separately controlling the allowable creep level of each individual axle and by minimizing torsional vibration per axle. The traction control system includes a torque maximizer and a torsional vibration detector. The torque maximizer measures traction system performance levels and determines the desired torque maximizer state for maximizing traction performance of each individual axle. The torsional vibration detector digitally processes estimated torque feedback of each traction motor in order to detect an unacceptable level of torsional vibration. The outputs of the torque maximizer and the torsional vibration detector are provided to a creep modulator which processes these inputs in order to control the operating creep level of each locomotive axle. As a result, traction performance is improved while minimizing torsional vibration and operating noise levels due to wheel/rail squeal.

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