This report describes the efforts of the Japanese transit industry, which includes manufacturers and transit operators, in the area of advanced propulsion systems for urban rail vehicles. It presents different chopper system designs, new ac drive developments, various commercial frequency and audio frequency signaling systems, investigation of potential electromagnetic interference problems, and possible countermeasures. Six Japanese transit systems using chopper cars are described in some detail in Appendix A and a widely used commutation circuit of these choppers is described in Appendix B. Other related topics, such as equipment reliability and maintenance, are also discussed.
This report addresses the possible electromagnetic interference between the electronic AC propulsion control systems and the signaling and train contr...
The energy consumption of BART transit cars was measured with and without regeneration during the period 25 August-2 September 1981. The test data was...
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