Abstract
I explore the possibility of increasing the response speed of the semiconductor converters that operate in the pulse mode by increasing the carrier frequency or rejecting pulse-width modulation (PWM) in favor of frequency PWM. The relation between the PWM carrier frequency and the limit response speed of the current loop achievable in closed control systems using classical frequency methods for creation of linear systems has been established. A model of mathematical simulation of a semiconductor device is proposed. The model is approximated by ideal elements without considering the voltage drop on the semiconductor keys and the dead-time interval. Using the simulation model, the frequency characteristics of of the frequency converters are compared with one converter operating in the linear mode and the other in the pulse mode. The limiting value of the frequency starting from which the frequency characteristics of the linear and pulse systems diverge has been determined for different kinds of the transfer functions of the “unchangeable” part. It has been established that this frequency approaches the Nyquist frequency most closely at resonance-peak amplitude A m > 1.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
References
Gorozhankin, A.N., Grigor’ev, M.A., Zhuravlev, A.M., and Sychev, D.A., Parametric optimization of a synchronous electric drive with improved mass and size parameters, Russ. Electr. Eng., 2015, vol. 86, no. 12.
Alyamkin, D.I., Anuchin, A.S., Kozachenko, V.F., Lashkevich, M.M., and Ostrirov, V.N., Trends in development and optimization of electric drive systems for hybrid and electric urban transport, Russ. Electr. Eng., 2015, vol. 86, no. 1.
Kosmodamianskii, A.S., Vorob’ev, V.I., and Pugachev, A.A., Direct torque control of induction motors fed by a single frequency converter, Russ. Electr. Eng., 2015, vol. 86, no. 9.
Anuchin, A.S., Structures of a digital pi controller for an electric drive, Russ. Electr. Eng., 2014, vol. 85, no. 7.
Chupin, S.A., Sokolov, D.V., Chupin, E.S., and Naumovich, N.I., Innovative solutions from Privodnaya Tekhnika, Russ. Electr. Eng., 2014, vol. 85, no. 10.
Grigor’ev, M.A., Sychev, D.A., Zhuravlev, A.M., Khayatov, E.S., and Savosteenko, N.V., Improving the reliability of electric drives of exhausters of the oxygenconverter process, Russ. Electr. Eng., 2015, vol. 86, no. 12.
Grigor’ev, M.A., Naumovich, N.I., and Belousov, E.V., A traction electric drive for electric cars, Russ. Electr. Eng., 2015, vol. 86, no. 12.
Filyushov, Y.P., Energy effective control of an asynchronous machine, Russ. Electr. Eng., 2014, vol. 85, no. 6.
Usynin, Y.S., Multiply connected control systems of electric drives with field regulated reluctance machines, Russ. Electr. Eng., 2014, vol. 85, no. 10.
Dybko, M.A., Brovanov, S.V., and Nos, O.V., Harmonic analysis of the output voltage of parallel multilevel converters with clamping diodes under different methods of PWM, Russ. Electr. Eng., 2015, vol. 86, no. 8.
Author information
Authors and Affiliations
Corresponding author
Additional information
Original Russian Text © M.A. Grigor’ev, 2017, published in Elektrotekhnika, 2017, No. 4, pp. 6–9.
About this article
Cite this article
Grigor’ev, M.A. An evaluation of frequency methods for creating a system to control semiconductor converters. Russ. Electr. Engin. 88, 189–192 (2017). https://doi.org/10.3103/S1068371217040071
Received:
Published:
Issue Date:
DOI: https://doi.org/10.3103/S1068371217040071