电气传动2024，Vol.54Issue(12)：40-46,7.DOI:10.19457/j.1001-2095.dqcd24930
弱励磁电感对全桥DC-DC变换器的影响及其自主软开关
Influence of Weak Excitation Inductance on Full-bridge DC-DC Converter and Its Autonomous Soft-switching
胡翔宇 1洪峰 1邵栋伟1
作者信息
- 1. 南京航空航天大学电子信息工程学院,江苏 南京 211106
- 折叠
摘要
Abstract
Switching power supply is now developing towards high-frequency soft-switching and high power density,the volume of magnetic components is greatly reduced,and the excitation inductance of transformer no longer meets the assumption of large excitation inductance in traditional analysis.Under this background,the influence of the weak excitation inductance on the full-bridge circuit was analyzed,and proposed that the full-bridge circuit can achieve autonomous soft-switching through the charging and discharging of the capacitor under the condition of the weak excitation inductance.The autonomous soft-switching of the full-bridge converter can be realized when the duty ratio is large.Through principle analysis and calculation,relationship between the charge and discharge of the switch body capacitance and the inductance current and the time constant was obtained,and the above principle through simulation were verified.Finally,an experimental platform with a working frequency of 200 kHz was built to verify the above analysis and simulation results.关键词
弱励磁电感/全桥DC-DC变换器/软开关Key words
weak excitation inductance/full-bridge DC-DC converter/soft-switching分类
信息技术与安全科学引用本文复制引用
胡翔宇,洪峰,邵栋伟..弱励磁电感对全桥DC-DC变换器的影响及其自主软开关[J].电气传动,2024,54(12):40-46,7.
