Analysis of Transients in a 4-Level Flying Capacitor Converter: Time Domain Approach. Part 2: Small Normalised Voltage Command

• Autorzy: Reznikov Boris , Ruderman Alex , Galanina Valentina

Identyfikatory

DOI

10.2478/pead-2020-0003

• 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 small normalised voltage command values [0, 1/3]. 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: 41--57
• Opis fizyczny: Bibliogr. 3 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.
• Reznikov, B., Ruderman, A. and Galanina, V. (2020). Analysis of Transients in a 4-Level Flying Capacitor Converter: Time Domain Approach. Part 1. Large Normalized Voltage Command. Power Electronics and Drives, 5(40), pp. 41–57.