Scientific and Technical Journal


ISSN Print 2221-3937
ISSN Online 2221-3805

Parameters and characteristics of adjustable speed electric drives depend to a large extent on the used methods and techniques of control and modulation. Multi-winding power transformer systems are between perspective topologies of power conversion systems. These medium-power and high-power systems are characterized by relatively low switching frequency of inverters. In this work, modification of algorithms of space-vector modulation has been executed for transformer-based system with three converters, which allows providing an improvement of spectral composition of winding voltages of the system. Set of control functions includes in this case eight basic correlations for continuous determination of parameters of control signals. Also, some additional correlations, characterized this triple-inverter system, have been used during analysis. MATLAB-simulation of modulation processes in transformer-based system has been executed for different modes of its operation. Areas of the rational use of continuous and discontinuous versions of modified algorithms of modulation have been established. It has been found that for the analyzed transformer-based system it is reasonable to use algorithms of continuous modulation at lower and medium output frequencies of the system, and at higher output frequencies, the use of algorithms of discontinuous modulation makes it possible to provide the better spectral composition of the winding voltage. Advanced harmonic composition of spectra of voltage and current in this system allows providing the corresponding decrease of losses both in the windings of multi-winding transformer and in the inverter part of the system.


Bose,B. K.(2002)Modern Power Electronics and AC Drives, Prentice Hall, Upper Saddle River, 536 p.

  1. Jung, J.-J., Lee, H.-J., Sul, S.-K. (2012) Control of the modular multilevel converter for variable-speed drives, Proc. of IEEE Int. Conf. Power Electron., Drives, Energy Syst., pp. 1–6.
  2. Holmes, D. G., Lipo, T. (2003) Pulse Width Modulation for Power Converters. Principles and Practice, IEEE Press, 628 p.
  3. Bose, B. K. (2017) Power electronics, smart grid, and renewable energy systems, Proceedings of the IEEE, vol. 105, no. 11, pp. 2011-2018.
  4. Yongsoon Park, Sungjae Ohn, Seung-Ki Sul (2014) Multi-level operation with two-level converters through a double-delta source connected transformer, Journal of Power Electronics, vol. 14, no. 6, pp. 1093-1099.
  5. Sungjae Ohn, Yongsoon Park, Seung-Ki Sul (2015) Multi-level operation of triple two-level PWM converters, Proc. of IEEE Energy Conversion Congress and Exposition (ECCE’2015),                pp. 4283-4289.
  6. Narayanan, G., Ranganathan, V. T. (2002) Extension of operation of space vector PWM strategies with low switching frequencies using different overmodulation algorithm, IEEE Trans. Power Electronics, vol. 17, no. 3, pp. 788-798.
  7. Mohan, N., Undeland, T. M., Robbins, W. P. (2003) Power Electronics, 3rd ed., John Wiley & Sons, 802 p.
  8. Beig, A. R., Narayanan, G., Ranganathan, V. T. (2007) Modified SVPWM algorithm for three level VSI with synchronized and symmetrical waveforms, IEEE Trans. on Ind. Electron., vol. 54, no. 1, pp. 486-494.
  9. Wei Chen, Haiwei Sun, Xin Gu, Changliang Xia (2016) Synchronized space vector PWM for three level VSI with lower harmonic distortion and switching frequency, IEEE Trans. on Power Electron., vol. 31, no. 9, pp. 6428-6441.
  10. Oleschuk, V., Gregor, R., Rodas, J., Giangreco, G. (2013) Dual three-phase system based on four neutral-point-clamped inverters with synchronized space-vector modulation, Proc. of European Conf. on Power Electronics and Applications (EPE’2013), 10 p.
  11. Oleschuk, V., Ermuratskii, V., Berzan, V. (2014) Multilevel converters and drives with space-vector modulation and voltage waveform symmetries, Proc. of IEEE Int’l Conf. on Applied and Theoretical Electricity (ICATE’2014), 6 p.
  12. Oleschuk, V., Prudeak, R., Sizov, A. (2014) Dual three-phase multi-inverter system controlled by specialized algorithms of synchronized PWM, Technical Electrodynamics, no. 1, pp. 35-40.

14. Oleschuk, V., Barrero, F. (2014) Standard and non-standard approaches for voltage synchronization of drive inverters with space-vector PWM: A survey, International Review of Electrical Engineering, vol. 9, no. 4, pp. 688-707.

Last download:
23 Aug 2018

[ © KarelWintersky ] [ All articles ] [ All authors ]
[ © Odessa National Polytechnic University, 2014-2018. Any use of information from the site is possible only under the condition that the source link! ]