摘要
提出一种由二极管、箝位电容、单管直流变换器及其控制电路构成的低损耗馈能式箝位电路。根据箝位电容电压幅值来控制单管直流变换器向电路馈能,只有当箝位电容电压超过设定最高值时,单管直流变换器才馈能工作,其余时间箝位电容充分吸收功率管关断时分布电感的转移能量。单管直流变换器在间歇性脉冲工作方式下获得了更高的工作效率。分析了电路的工作过程及设计注意事项,最后通过实验证明了电路的有效性。
An low loss energy-feedback clamped circuit which consists in one diode,one clamped capacitor,single transistor DC/DC converter and control circuit is proposed.The operation of energy-feedback is decided by clamped capacitor voltage.When clamped capacitor voltage beyonds the maximum designed voltages, the single-transistor converter can work.During other time,the capacitor absorbs the energy from parasitic inductor during switching-off time.The converter can achieve a good efficiency when it works at a pulse status.The operation process of the voltage- clamped circuit is analysed, and the design point is explained.The experiment verifies the efficiency.
出处
《电力电子技术》
CSCD
北大核心
2012年第4期12-14,共3页
Power Electronics
基金
国家自然科学基金资助项目(51067004)
江西省重点工业科技支撑项目(2010BGA02000)~~
关键词
有源箝位电路
馈能
关断损耗
缓冲
active-clamped circuit
energy feedback
turn-off loss
snubber
