摘要
为了提升Zeta变换器的电压增益和效率,减小开关管的电压应力,将Buck-Boost变换器与Zeta变换器进行组合并引入耦合电感倍压结构,提出耦合电感组合Buck-Boost-Zeta变换器,该变换器在提升电压增益的同时保留了Zeta变换器输出电流连续的特点,将变换器中二极管–电容支路作为无源钳位吸收回路用来吸收漏感能量,有效抑制了开关管寄生电容与漏感谐振产生的电压尖峰,进一步提升了变换器的电压增益和效率,降低了开关管电压应力。分析工作在CCM与DCM模式下的工作原理,给出各项性能参数。将文中所提变换器与其他耦合电感Zeta变换器的各项性能进行比较,给出Buck-Boost-Zeta变换器的拓展结构。最后,通过搭建一台150W实验样机,验证理论分析的正确性。
In order to increase the voltage gain and efficiency of the Zeta converter and reduce the voltage stress of the switch. Combining the Buck-Boost converter with the Zeta converter and adding the coupled inductance voltage doubler structure, the coupled inductance combined Buck-Boost-Zeta converter was proposed. The converter maintains the continuous output current of the Zeta converter while increasing the voltage gain. The diode-capacitor branch of the converter was used as a passive clamp to absorb the leakage inductance energy, which effectively suppresses the voltage spike generated by the switching transistor parasitic capacitance and leakage inductance resonance. The voltage gain and efficiency of the converter are further improved, and the voltage stress of the switching tube was reduced. The working principle of the converter working in CCM and DCM operation was analyzed, and the performance parameters were given. Compared the performance of the converters mentioned in this paper with the performance of other coupled inductor Zeta converters. The extended structure of the converter was given. Finally, the correctness of the theoretical analysis was proved by making a 150 W experimental prototype for experiment.
作者
荣德生
孙瑄瑨
RONG Desheng;SUN Xuanjin(School of Electrical and Control Engineering,Liaoning Technical University,Huludao 125105,Liaoning Province,China)
出处
《中国电机工程学报》
EI
CSCD
北大核心
2020年第14期4590-4601,共12页
Proceedings of the CSEE
基金
国家自然科学基金项目(U1510128)
辽宁省自然科学基金面上项目(2019JH3/10300205)。
