A new approach to thyristor-based converter commutation configuration for AC-wire DC-motor electric locomotive traction and energy regeneration modes

Autor:	I. A. Barinov, O. V. Melnichenko, S. V. Vlasyevskiy, S. A. Boginskiy, O. A. Malysheva
Rok vydání:	2020
Předmět:	History Energy regeneration Computer science Electric locomotive medicine.medical_treatment medicine Thyristor Commutation Traction (orthopedics) DC motor Automotive engineering Computer Science Applications Education
Zdroj:	Journal of Physics: Conference Series. 1614:012102
ISSN:	1742-6596 1742-6588
Popis:	The widespread use of power converters in modern electric locomotives provides multiple opportunities for railway electric transport, one of them being smooth supply voltage regulation. For electric locomotives with smooth voltage regulation the overall efficiency of energy consumption is dependent on power factor of its power converters, both in traction and regenerative braking modes. Power factor of thyristor-based converters universally used on Russian railways remains to be relatively low. The paper presents a technical proposal to modernize the type AC-wire DC-motor electric locomotive power circuit by introducing a semiconducting discharge shunt in parallel with the subcircuit of rectified current, which allows for a revision of the traditional control algorithm of the converter’s thyristor arms. Mathematical modelling of the proposed circuit suggests a 4.6 % increase in converter power factor in traction mode and an 18.5 % increase in regenerative braking mode under nominal load conditions.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::8cc9df5099b9324add2e888ffc352540 https://doi.org/10.1088/1742-6596/1614/1/012102 Zobrazit plný text záznamu