10.14489/td.2025.12.pp.063-067

2025, 12 December

DOI: 10.14489/td.2025.12.pp.063-067

Kryukov O. V., Gulyaev I. V.
FREQUENCY CONVERTER BASED ON AMULTI-LEVEL INVERTER AS PART OF AN ELECTRIC DRIVE GAS PUMPING UNIT
(pp. 63-67)

Abstract. The article analyzes the use of a high-voltage frequency converter based on the development of a multilevel voltage inverter with switching capacitors to increase the energy performance of an electric drive of a gas pumping unit. The power of the presented unit is 4 MW, which corresponds to. characteristics of a centrifugal supercharger, asynchronous electric motor, semiconductor devices and a forced cooling system of a frequency converter. A schematic diagram of a four-level voltage inverter with switched capacitors has been developed, in which IGBT modules for increasing current are connected in parallel and operate in push-pull mode. A modulation method is proposed to minimize distortion of the output voltage in the most important control area of the electric drive with a corresponding modified modulation depth. The results obtained have been tested in practice during the development of a high-voltage frequency converter, which confirmed the high quality of the electricity received. The voltage and current of the inverter have corresponding values depending on the parameters of the asynchronous electric motor and pulse width modulation parameters.

Keywords: automated electric drive, frequency converter, inverter, harmonic coefficient, forced cooling, gas pumping unit.

+ - About the Authors Click to collapse

O. V. Kryukov (OOO “TSN-electro”, Nizhny Novgorod, Russia) E-mail: Данный адрес e-mail защищен от спам-ботов, Вам необходимо включить Javascript для его просмотра.
I. V. Gulyaev (National Research Ogarev Mordovia State University, Saransk, Russia) E-mail: Данный адрес e-mail защищен от спам-ботов, Вам необходимо включить Javascript для его просмотра.

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