电流隔离
变压器
电气工程
逆变器
隔离变压器
漏感
电磁线圈
正激变换器
电子工程
三角星形变压器
电压
工程类
拓扑(电路)
计算机科学
配电变压器
升压变换器
作者
Branko Majmunović,Yucheng Gao,Inder Kumar Vedula,Subodh Khandelwal,Dragan Maksimović
标识
DOI:10.1109/apec43580.2023.10131498
摘要
This paper presents a transformer-isolated high step-down dc-dc converter based on a stacked active bridge (SAB) configuration. The isolated SAB (iSAB) converter consists of series-stacked inverter modules and parallel-connected rectifier modules. To achieve galvanic isolation, transformers are inserted between the inverter and rectifier bridges. The nominal step-down conversion ratio is determined by the number of inverter modules and the turns ratio of the transformer. In order to reduce the footprint of the magnetic components, the transformers are coupled on a single core, and the series inductances are realized as controllable leakage inductances within the same magnetic structure using a novel custom core and planar winding arrangement, a solution unique to the iSAB configuration. The approach is verified by experimental results on a 400-to-48 V, 3kW, 400kHz iSAB prototype using low-voltage GaN devices and having 96.7% peak efficiency.
科研通智能强力驱动
Strongly Powered by AbleSci AI