Simulation shows how choppers can save energy (in regenerative braking)
Low frequency and radio frequency electromagnetic compatibility for rapid transit railways
A gate-turn-off thyristor chopper for traction drives
A comparison between autotransformers and booster transformers for AC traction supply
A study of power factor correction techniques for high power AC locomotives
Whole system compatibility measurements of the autotransformer supplied 50 kV railway in New Zealand