Ключевые слова
electric drive
three-phase asynchronous motor
safe control
inverter
bridge circuit
efficiency
pulse width modulation
transistors with isolated gate
small-sized relays
mechanical circuit opening
Как цитировать
Аннотация
In this article, features of using bridge converter circuits to control AC motors in railway automation computer systems are discussed. Special attention is paid to evaluating the efficiency of converter circuits. It is shown that utilizing low-frequency operation modes of power switches can significantly increase converter efficiency as part of the coupling devices. A technical solution is proposed for implementing five-wire AC motor control circuits consisting of a five-phase bridge conversion circuit. A brief overview of the modern element base used to construct inverters is provided, along with an assessment of electronic components from the perspective of analogous device selection potential. Additionally, the use of electromagnetic relays as functional converters is considered, providing increased reliability and electrical safety.
Библиографические ссылки
Gavzov D. V., Sapozhnikov Val. V., Sapozhnikov Vl. V. Safety methods for discrete systems. Automation and remote control (Avtomatika i telemekhanika), 1994, № 8, pp. 3–50.
Sapozhnikov Val. V., Sapozhnikov Vl. V., Khristov Kh. A., Gavzov D. V. Methods for building up safe microelectronic systems of railway automation. Under the editorship of Vl. V. Sapozhnikov. Moscow, Transport, 1995, 272 p.
Sapozhnikov Vl. V., Kononov V. A., Kurenkov S. A., Lykov A. A., Nasedkin O. A., Ni- kitin A. B., Prokof’ev A. A., Tryasov M. S. Microprocessor-based systems of centrali- zation: textbook for vocational training and colleges of railway transport. Under the editorship of Vl. V. Sapozhnikov. Мoscow, GOU «Training center for railway transport education», 2008, 398 p.
Safety of railway automation and remote control. Methods and principles of micro- electronic SzhAT safety. RTM 32 CSh 1115842.01–94. St. Petersburg, PGUPS, 1994, 120 p.
Gavzov D. V., Kovkin A. N. Comparative evaluation of basics for interface loops safe- ty considering the present-day development of power electronics. The development and operation of new devices and systems of railway automation and remote control: сollection of research papers. St. Petersburg, PSTU, 2004, pp. 66–69.
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