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This paper presents a full-bridge full-wave DC-DC converter used in 35 kVA power grade auxiliary static inverter (SIV) of first low-floor light rail vehicle (LFLRV) in China, where reducing voltage stress in output rectifier diodes is so important for the converter reliability. DC-bias function of high frequency transformer is analyzed and a sensorless digital dc-bias control method by DSP and CPLD...
For the special conditions such as underground, dusty, hard maintenance environment of mine area, ac motor, which overcomes some drawbacks of dc motor, is definitely the best choice for mine locomotive. This paper compares characteristics between dc drive and ac drive, and presents an ac drive system for mine locomotive. The full digital control, including slip frequency control in digital signal...
With the development of human-beingpsilas civilization, public transportation has achieved great progress, but more attention has to be taken for children, old men, and other people who are not convenient to take public traffic, LFLRV (low floor light rail vehicle) has so many advantages that it is a very good choice in the city for these people. This paper describes the traction system of the first...
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