Next Article in Journal
Energy Sustainability in Smart Cities: Artificial Intelligence, Smart Monitoring, and Optimization of Energy Consumption
Previous Article in Journal
A New Input Selection Algorithm Using the Group Method of Data Handling and Bootstrap Method for Support Vector Regression Based Hourly Load Forecasting
Open AccessArticle

A Quasi-Resonant ZVZCS Phase-Shifted Full-Bridge Converter with an Active Clamp in the Secondary Side

Electrical Engineering Department, Soongsil University, 369 Sang-doro, Seoul, Korea
*
Author to whom correspondence should be addressed.
Energies 2018, 11(11), 2868; https://doi.org/10.3390/en11112868
Received: 11 October 2018 / Revised: 19 October 2018 / Accepted: 22 October 2018 / Published: 23 October 2018
A novel Pulse-Width-Modulation (PWM) quasi-resonant active-clamp phase-shifted full-bridge converter is presented and analyzed in this paper. In the proposed topology, an active-clamp switch and a clamp capacitor that resonates with the leakage inductance of transformer are employed at the secondary side. The active-clamp circuit helps all of the primary switches in achieving both zero-voltage switching (ZVS) turn-on and nearly zero-current switching (ZCS) turn-off over the entire load range, and resets the primary current during the freewheeling interval. The operation of the active-clamp circuit eliminates voltage ringing across the rectifier. In addition, the secondary diodes can achieve ZCS turn-off, which removes the reverse recovery problem of diodes, and the active-clamp switch can achieve ZCS turn-on. A 3.5-kW prototype was built to verify the performance of the proposed converter. A maximum efficiency of 97.6% was achieved under a 2-kW load, and an efficiency of more than 96% was achieved even under a light load. View Full-Text
Keywords: quasi-resonant; active clamp; zero-voltage zero-current switching (ZVZCS); phase-shifted full bridge quasi-resonant; active clamp; zero-voltage zero-current switching (ZVZCS); phase-shifted full bridge
Show Figures

Figure 1

MDPI and ACS Style

Tran, D.; Vu, N.; Choi, W. A Quasi-Resonant ZVZCS Phase-Shifted Full-Bridge Converter with an Active Clamp in the Secondary Side. Energies 2018, 11, 2868.

Show more citation formats Show less citations formats
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Article Access Map by Country/Region

1
Search more from Scilit
 
Search
Back to TopTop