Analytical calculation of resonant inductance for zero voltage switching in phase-shifted full-bridge converters


Autoria(s): Hallworth, Michael; Potter, Ben; Shirsavar, Ali
Data(s)

01/03/2013

Resumo

The phase shift full bridge (PSFB) converter allows high efficiency power conversion at high frequencies through zero voltage switching (ZVS); the parasitic drain-to-source capacitance of the MOSFET is discharged by a resonant inductance before the switch is gated resulting in near zero turn-on switching losses. Typically, an extra inductance is added to the leakage inductance of a transformer to form the resonant inductance necessary to charge and discharge the parasitic capacitances of the PSFB converter. However, many PSFB models do not consider the effects of the magnetizing inductance or dead-time in selecting the resonant inductance required to achieve ZVS. The choice of resonant inductance is crucial to the ZVS operation of the PSFB converter. Incorrectly sized resonant inductance will not achieve ZVS or will limit the load regulation ability of the converter. This paper presents a unique and accurate equation for calculating the resonant inductance required to achieve ZVS over a wide load range incorporating the effects of the magnetizing inductance and dead-time. The derived equations are validated against PSPICE simulations of a PSFB converter and extensive hardware experimentations.

Formato

text

Identificador

http://centaur.reading.ac.uk/31750/1/Analytical%20Calculation%20of%20Resonant%20Inductance%20for%20Zero%20Voltage%20Switching%20in%20Phase-Shifted%20Full-Bridge%20Converters%20-%20Hallworth%202012.pdf

Hallworth, M., Potter, B. <http://centaur.reading.ac.uk/view/creators/90000859.html> and Shirsavar, A. <http://centaur.reading.ac.uk/view/creators/90000312.html> (2013) Analytical calculation of resonant inductance for zero voltage switching in phase-shifted full-bridge converters. Power Electronics, IET, 6 (3). pp. 523-534. ISSN 1755-4543 doi: 10.1049/iet-pel.2012.0461 <http://dx.doi.org/10.1049/iet-pel.2012.0461>

Idioma(s)

en

Publicador

IET

Relação

http://centaur.reading.ac.uk/31750/

creatorInternal Potter, Ben

creatorInternal Shirsavar, Ali

10.1049/iet-pel.2012.0461

Tipo

Article

PeerReviewed