摘要
针对反激变换器输出纹波电压比较大的缺点,分别分析了连续电流模式(CCM)、断续电流模式(DCM)的能量传输过程,并通过能量传输过程中反激变压器次级线圈电流和输出电容电压之间的关系,从根本上得出了反激变换器纹波产生的机理;对于纹波测量,总结出了三种正确的测量方法,并介绍了各种测量法的相关测量装置及相应注意事项,简述了EIAJ-RC9002A测量标准。实验测量表明,采用同轴电缆法测量纹波电压正确可行。
Flyback Converter has the weakness of high output ripple. The article has concluded the mason of high output ripple substantially by analyzing the relation of the current through the inductor and the voltage of capacitor during the energy transmission processes in continuous conduction mode （CCM） and discontinuous conduction mode （DCM）. For the measurement of ripple, three correct methods can be adopted. Some correlative devices, problems and the EIAJ-RC9002A method are introduced. The experimental results are in positive to the coaxial cable showing the feasibility of the proposed methods.
出处
《中国测试》
CAS
2010年第2期22-25,共4页
China Measurement & Test
关键词
反激变换器
纹波
连续电流模式
断续电流模式
测量
Flyback transformer
Ripple
Continuous current mode
Discontinuous current mode
Measurement
