Theoretical and experimental investigation of the voltage ripple across flying capacitors in the interleaved buck converter with extended duty cycle

Zajec, Peter (avtor), Nemec, Mitja (avtor)

The interleaved buck converter with an extended duty cycle is analyzed in terms of unexplored parasitic switching states that diminish the switch utilization and its safety due to high-magnitude charging and discharging currents. The analysis explains the origin of the states and their effects and demonstrates their correlation with the existing voltage ripple on flying capacitors. The article further demonstrates that the voltage ripple can no longer be arbitrarily chosen as parasitic states emerge whenever the ripple exceeds an identified critical value being equal to the twofold voltage drop on the diode. A simple design criterion for flying capacitance is proposed. For a limited set of battery-powered DC–DC converters, a solution permitting the use of smaller capacitance by adding an extra switch is proposed. The derived findings are verified using experimental and simulation results.

• Jezik: Angleški jezik
• Ključne besede: DC–DC conversion, interleaved buck, parasitic switching states
• Vrsta gradiva: Članek v reviji
• Tipologija: 1.01 - Izvirni znanstveni članek
• Organizacija: FE - Fakulteta za elektrotehniko
• Status publikacije: Objavljeno
• Različica publikacije: Objavljena publikacija
• Leto izida: 2018
• Št. strani: 13 str.
• Številčenje: Vol. 11, iss. 4, art. 1017
• PID: 20.500.12556/RUL-131820
• UDK: 621.3
• ISSN pri članku: 1996-1073
• DOI: 10.3390/en11041017
• COBISS.SI-ID: 12011348
• Datum objave v RUL: 04.10.2021

Gradivo je del revije

• Naslov: Energies
• Skrajšan naslov: Energies
• Založnik: Molecular Diversity Preservation International
• ISSN: 1996-1073
• COBISS.SI-ID: 518046745

Licence

• Licenca: CC BY 4.0, Creative Commons Priznanje avtorstva 4.0 Mednarodna
• Povezava: http://creativecommons.org/licenses/by/4.0/deed.sl
• Opis: To je standardna licenca Creative Commons, ki daje uporabnikom največ možnosti za nadaljnjo uporabo dela, pri čemer morajo navesti avtorja.
• Začetek licenciranja: 21.04.2018

Sekundarni jezik

• Jezik: Slovenski jezik
• Ključne besede: DC-DC pretvornik, enosmerni presmernik, pretvornik navzdol s prepletenim proženjem, parazitno stikalno stanje