Analysis of Transients in a 4-Level Flying Capacitor Converter: Time Domain Approach. Part 1: Large Normalised Voltage Command

• Autorzy: Reznikov Boris , Ruderman Alex , Galanina Valentina

Identyfikatory

DOI

10.2478/pead-2020-0002

• Języki publikacji: EN

Abstrakty

EN

A 4-level flying capacitor converter (FCC) operation is considered on a base of discrete state-space model. A transition matrix is obtained for a pulse width modulation (PWM) period for large normalised voltage command values [1/3, 1). The transition matrix elements are expanded into power series by small parameters. The matrix eigenvalues are presented in the form of power series as well. Six separate transients are constructed for six possible initial FCC states on a PWM period. Inductor current and capacitors’ voltage transients are found for the voltage source power-up as the arithmetic average of the six separate transients. Finally, the discrete solutions are replaced by equivalent continuous ones. Simple and accurate formulas for inductor current and capacitors’ voltage transients demonstrate good agreement with simulation results.

Słowa kluczowe

EN

4-level DC-DC converter; flying capacitor; natural balancing; transients

• Wydawca: De Gruyter
• Czasopismo: Power Electronics and Drives
• Rocznik: 2020
• Tom: Vol. 5 (40)
• Strony: 27--40
• Opis fizyczny: Bibliogr. 6 poz., rys.

Twórcy

autor

Reznikov Boris

• GS Group, St. Petersburg, Russia

autor

Ruderman Alex

• Department of Electrical and Computer Engineering, Nazarbayev University, Nur-Sultan, Kazakhstan, Israel

autor

Galanina Valentina

• Department of Applied Mathematics, State University of Aerospace Instrumentation, St. Petersburg, Russia

Bibliografia

• Reznikov, B. and Ruderman, A. (2009). Four-Level Single-Leg Flying Capacitor Converter Voltage Balance Dynamics Analysis. In: Proceedings of 13th European Conference on Power Electronics and Applications, Barcelona (Spain), September 2009, pp. 1–10.
• Reznikov B., Ruderman A. and Galanina V. (2019). Analysis of Transients in a Three-Level DC-DC Flying Capacitor Converter. Time Domain Approach. Power Electronics and Drives, 4(39), pp. 33–45.
• Ruderman, A. and Reznikov B. (2010). Simple Time Domain Averaging Methodology for Flying Capacitor Converter Voltage Balancing Dynamics Analysis. In: Proceedings IEEE International Symposium on Industrial Electronics, Bari (Italy), July 2010, pp. 1064–1069.
• Wilkinson, R. H., Meynard, T. A. and Mouton, H. du Toit (2006a). Natural Balance of Multicell Converters: The General Case. IEEE Transactions on Power Electronics, 21(6), pp. 1658–1666.
• Wilkinson, R. H., Meynard, T. A. and Mouton, H. du Toit (2006b). Natural Balance of Multicell Converters: The Two-Cell Case. IEEE Transactions on Power Electronics, 21(6), pp. 1649–1657.
• Yuang, X., Stemmler, H. and Barbi, I. (2001). Self-Balancing of the Clamping Capacitor-Voltages in the Multilevel Capacitor-Clamping-Inverter Under Sub-Harmonic PWM Modulation. IEEE Transactions on Power Electronics, 16(2), pp. 256–263.