Design metodology to improve the efficiency of ZVS double half-bridge DC/DC converter

• Published in: 2016 12th IEEE International Conference on Industry Applications (INDUSCON) pp. 1 - 8
• Main Authors: Maragano Schmidt, Julio C., Sartori, Hamiltom Confortin, Pinheiro, Jose Renes
• Format: Conference Proceeding
• Language: English
• Published: IEEE 01-11-2016
• Subjects: Capacitors; Inductors; Legged locomotion; Magnetic resonance; Magnetic switching; Windings; Zero voltage switching
• DOI: 10.1109/INDUSCON.2016.7874553

This paper presents a design methodology of isolated Zero-Voltage-Switching Phase-Shifted Double Half Bridge DC/DC converter (ZVS-PS-DHB), which has one transformer associated to each leg. DHB topology is presented as an alternative to the well-known ZVS Phase-Shifted Full-Bridge DC/DC Converter (ZVS-PS-FB), it employing a minimum number of components. Parameter values of transformers, such as leakage and magnetizing inductances, are analyzed to operate under ZVS condition from non-load to full-load. The main objective of the design methodology used has been to find out converter parameters operating at ZVS for full load range. This has been carried out to minimize the converter losses. Through the developed methodology the converter reaches efficiency close to 99%. Converter operating stages and ZVS behavior analysis for different design trade-offs are presented and discussed. Finally, results are presented to prove the performance and operating of the ZVS-PS-DHB converter.