The invention discloses an alternating current-direct current electric locomotive traction device and a system, wherein the alternating current-direct current electric locomotive traction device comprises a pulse-width modulation (PWM) converter unit and a step-down chopping unit, an input end of the PWM converter unit is connected into a power grid, an output end of the PWM converter unit is connected with a traction motor through the step-down chopping unit, the PWM converter unit converts an alternating current power supply which is connected into the power grid and stabilizes voltage to output direct current, and the step-down chopping unit reduces voltage and chops direct current which is output from the PWM converter unit to be required direct current by controlling switching of a chopping switch pipe, and supplies the required direct current for the traction motor. The system comprises more than one traction converter, wherein each traction converter is provided with a traction controller and more then two sets of traction devices which are respectively connected with the traction controller, and each set of traction device is corresponding to the traction motor. The alternating current-direct current electric locomotive traction device and the system can achieve traction power supply with simple structure, low making cost, steady output of traction energy and high power factor on the basis of that locomotive circuit structures do not need to change.
Alternating current-direct current electric locomotive traction device and system
2015-11-25
Patent
Electronic Resource
English
IPC: | B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen |
Engineering Index Backfile | 1911
|METHOD FOR LOAD BALANCING OF TRACTION MOTORS OF ALTERNATING CURRENT ELECTRIC LOCOMOTIVE
European Patent Office | 2020
|TRACTION CONVERTER OF AN ALTERNATING-CURRENT LOCOMOTIVE FOR TRACTION AND REGENERATIVE-BRAKING MODES
European Patent Office | 2020
|Traction transmission system of direct-current hybrid power locomotive
European Patent Office | 2024
|European Patent Office | 2023
|