Simulation studies of flyback DC/DC converter with active clamp circuit

• Autorzy: Krupa A.
• Konferencja: Computer Applications in Electrical Engineering 2014 (28-29.04.2014; Poznań, Polska)
• Języki publikacji: EN

Abstrakty

EN

To yield energy from the low-voltage power source such as a photovoltaic panel or a fuel cell it is necessary to connect it with step-up DC/DC converter. Among many step-up topologies there are two basic types of converters: ones with and ones without galvanic isolation. Although both types provide voltage gain thanks to the turns ratio of transformer or coupled inductor, electrical isolation in some applications is essential. This paper presents an isolated DC/DC flyback converter using an active clamp and dual series resonance circuits. The converter operates as an isolated voltage amplifier with a voltage gain B dependent on duty cycle D and input voltage V_in. Through the use of transistors with low drain to source resistance R_DS(on) conduction losses of main transistor switch can be reduced. The reverse recovery current of output rectifier can be omitted thanks to resonant tank consisted of transformer leakage inductance and voltage doubler capacitors. Active clamp circuit allows the energy transfer to the load in the two stages as in the forward converter. The 2-kW flyback converter simulation model was developed. Input voltage V_in varied from 12V to 48V and output voltage above 330V needed for 1-phase DC to AC conversion was achieved. Maximum converter efficiency was 92.3%.

Słowa kluczowe

EN

Pspice simulation; flyback converter; active clamp

• Wydawca: Wydawnictwo Politechniki Poznańskiej
• Czasopismo: Poznan University of Technology Academic Journals. Electrical Engineering
• Rocznik: 2014
• Tom: No. 80
• Strony: 85--92
• Opis fizyczny: Bibliogr. 5 poz., rys.

Twórcy

autor

Krupa A.

• Bialystok University of Technology

Bibliografia

• [1] Li Q., Wolfs P., “A Review of the Single Phase Photovoltaic Module Integrated Converter Topologies with Three Different DC Link Configurations”, Transactions on Power Electronics IEEE 1320-1333, 2008.
• [2] Blaabjerg F., Kjaer S. B., Pedersen J. K., “A Review of Single-Phase Grid-Connected Inverters for Photovoltaic Modules”, Transactions on Industry Applications, IEEE 1292-1306, 2005.
• [3] Kim Soo-Seok, Choi Dae-Kyu, Jang Su-Jin, Tae-Won Lee, “The Active Clamp Sepic-Flyback Converter” Power Electronics Specialists Conference, 2005. PESC '05. IEEE 36th.
• [4] Nambiar V.P., Yahya A., Selvaduray T.R., ”SPICE modelling of a valley switching flyback power supply controller for improved efficiency in low cost devices”, 2012 IEEE International Conference on Circuits and Systems.
• [5] http://www.irf.com/ - IRFP4368, HFA15PB60 datasheet, spice models