Proceedings of the RHSAS

PROCEEDINGS OF THE RUSSIAN HIGHER SCHOOL
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Print ISSN: 1727-2769    Online ISSN: 2658-3747
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№2(67) April - June 2025

Highly dynamic "dead time" compensation in electric drives based on signal adaptation

Issue No 2 (59) April - June 2023
Authors:

Kromm Andrey Arturovich,
Simakov Gennadiy Mikhailovich,
Gusev Andrey Evgenevich
DOI: http://dx.doi.org/10.17212/1727-2769-2023-2-16-28
Abstract

The article discusses the analysis and synthesis of a system of highly dynamic "dead time" compensation in the current loop of motors powered from transistor pulse-width converters. The first part of the paper provides a brief analysis of existing technical solutions, whose algorithms do not imply changes or additions to the power part of the drive and therefore are implemented exclusively by software. It is shown that the most modern methods of adaptive compensation can be considered using reference models of the control object. A non-search adaptive dead-time compensation system is proposed in the paper which provides signal self-tuning in the motor current loop, and dead-time compensation is based not on linearization or correction of nonlinear effects and delays of a pulse-width converter, but on parrying disturbing influences caused by the negative effects of “dead time”. Particular attention is paid to the practical orientation of the proposed solution; therefore, the considered algorithm is based solely on the basic principles of the control theory proven by practice. This approach allows us to ensure not only the transparency of the theoretical arguments presented in the article, but also reduce the time spent on the analysis and synthesis of the current loop, the purpose of which, ultimately, is the optimization of high-precision drives. With the absence of iteration methods of mathematics, the resources of microprocessor control units are minimized, which makes this method even more attractive in low-budget drives that do not claim to "exclusivity of integrated circuitry. The proposed algorithm was integrated into the existing current loop of an asynchronous electric drive with vector control, which proved the high efficiency of static and dynamic compensation of  not only the “dead time” of the converter, but also of the non-linear effects associated with it that are difficult to analyze. The adaptive "dead time" compensation increased the efficiency of the electric drive at low motor speeds, compared to voltage boost compensation, by approximately four percent, and also reduced the motor torque ripple by about seventeen percent. An oscillogram of the phase current of a real drive with "dead time" compensation is given according to the principle of parametric voltage addition, which is the most common in practice, as well as a waveform of current with adaptive compensation action according to the principle considered in this article.


Keywords: with pulse-width converter, «dead time», compensation, reference model, self-tuning principle, state space, example of application, waveforms of current

References
  1. Shreiner R.T. Matematicheskoe modelirovanie elektroprivodov peremennogo toka s poluprovodnikovymi preobrazovatelyami chastoty [Mathematical modeling of alternating current electric drives with semiconductor frequency converters]. Ekaterinburg, URO RAN Publ., 2000. 654 p.
  2. Tomasov V.S., Lovlin S.Ju., Tushev S.A., Smirnov N.A. Iskazhenie vykhodnogo napryazheniya shirotno-impul'snogo preobrazovatelya pretsizionnogo elektroprivoda [Output voltage distortion of pulse width converter of precision electric drive]. Vestnik Ivanovskogo gosudarstvennogo energeticheskogo universiteta = Vestnik of Ivanovo State Power Engineering University, 2013, no. 1, pp. 84–87.
  3. Vinogradov A.B., Gnezdov N.E., Glebov N.A., Zshuravlev S.V. [A technique for setting up the measuring channels of an AC electric drive with a high quality of variable regulation]. Trudy Mezhdunarodnoi shestnadtsatoi nauchno-tekhnicheskoi konferentsii «Elektroprivody peremennogo toka» [Proceeding of the sixteenth international scientific-technical conference "Alternating current electrical drives"]. Ekaterinburg, 2015, pp. 55–58. (In Russian).
  4. Peresada S.M., Kovbasa S.N., Dymko S.S. [Investigation of dead time influence in frequency converters]. Trudy Mezhdunarodnoi nauchno-tekhnicheskoi konferentsii molodykh uchenykh, aspirantov i studentov «Sovremennye problemy elektroenergotekhniki i avtomatiki» [Proceedings of the International scientific and technical conference of young scientists, graduate students and students "Modern problems of electrical power engineering and automation"]. Kiev, 2009, pp. 35–38. (In Russian).
  5. Burakov M.V., Konovalov A.S. Modifikatsiya prediktora Smita dlya lineinogo ob"ekta s peremennymi parametrami [Modification of Smith predictor for a linear plant with changeable parameters]. Informatsionno-upravlyayushchie sistemy = Information and Control Systems, 2017, no. 4, pp. 25–34. DOI: 10.15217/issn1684-8853.2017.4.25.
  6. Schmirgel H., Krah J.O., Berger R. Delay time compensation in the current control loop of servo drives – higher bandwidth at no trade-off. PCIM Europe Proceedings, Nürnberg, Germany, 2006, pp. 541–546.
  7. Klarenbach C., Schmirgel H., Krah J.O. Design of fast and robust current controllers for servo drives based on space vector modulation. PCIM Europe, Nürnberg, Germany, 2011, pp. 182–188.
  8. Zhang Q., Shen Q., Tong Q., Qin H. Predictive control for a permanent magnet synchronous motor using automatic tuning Smith-predictor with optimal parameter mismatch. 2008 International Conference on Electrical Machines and Systems, Wuhan, China, 2008, pp. 1520–1525.
  9. Kiesbauer J., Vnucec D., Fuchs J., Konigorski U. Entkopplung der Regelgrössen in einem Fluidfördersystem mit Totzeit. Patent EP, no. WO2011120689A1, 2011.
  10. Basharin A.V., Novikov V.A., Sokolovskii G.G. Upravlenie elektroprivodami [Control over electric drives]. Leningrad, Energoizdat Publ., 1982. 382 p.
  11. Bortsov Yu.A., Polyakhov N.D., Putov V.V. Elektromekhanicheskie sistemy s adaptivnym i modal'nym upravleniem [Electromechanical systems with adaptive and model control]. Leningrad, Energoatomizdat Publ., 1984. 216 p.
  12. Lebedev A.V., Filaretov V.F. Samonastraivayushchayasya sistema s etalonnoi model'yu dlya upravleniya dvizheniem podvodnogo apparata [Self-adjusting system with a reference model for control of underwater vehicle motion]. Avtometriya = Optoelectronics, Instrumentation and Data Processing, 2015, vol. 51, no. 5, pp. 42–52. (In Russian).
  13. Schroeder D. Elektrische Antriebe, regelung von antriebssystemen. Berlin, Springer, 2009. 1336 p. DOI: 10.1007/978-3-540-89613-5.
  14. Hsu J.C., Meyer A.U. Sovremennaya teoriya avtomaticheskogo upravleniya i ee primenenie [Modern control principles and applications]. Moscow, Mashinostroenie Publ., 1972. 544 p. (In Russian).
  15. Lamsahel H., Zehringer Т., Sworowski Е. Verfahren und Vorrichtung zur Totzeitkompensation. Patent Germany, no. DE102012111696A1, 2014.
For citation:

Kromm A.A., Simakov G.M., Gusev A.E. Vysokodinamichnaya kompensatsiya «mertvogo vremeni» v elektricheskikh privodakh na baze signal'noi adaptatsii [Highly dynamic "Dead time" compensation in electric drives based on signal adaptation]. Doklady Akademii nauk vysshei shkoly Rossiiskoi Federatsii = Proceedings of the Russian higher school Academy of sciences, 2023, no. 2 (59), pp. 16–28. DOI: 10.17212/1727-2769-2023-2-16-28.

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