In this paper , the research work maily focus on the dc / dc converter 论文对一种采用改进pwm控制方法的半桥软开关直流变换器进行了深入研究。
To resolve this proplem . snubber circuit and soft switching technology are recommanded 为了解决这个问题，常用的两种方法是使用缓冲电路及软开关技术。
The objective of this paper is to do further research on the soft - switching techniques for the zvs pwm h - fb tl converter 本文对h - fbtl变换器的软开关技术进行了进一步的研究。
It can be seen in the future , power electronics converter will get higher efficiency and power density 可以预见软开关技术的应用可使电力电子变换器具有更高的效率和更高的功率密度。
The series of resonant inductance is adopted in the circuit to realize the zvs for the lagging arm 探讨了实现滞后臂软开关的方法和占空比丢失现象，采用串联谐振电感来实现滞后臂的软开关。
Nowadays , power factor correction ( pfc ) technique and soft - switching pwm technique are both widely researched 功率因数校正( pfc )技术和软开关pwm技术都是当前电力电子技术研究的热点问题。
By using a modified pwm control method , the two main switches conduct symmetrically and can achieve zero - voltage switching ( zvs ) easily 主开关管不仅工作在对称状态,而且能很好实现软开关。
Zvs soft switching resonant circuit is selected after analyzing and comparing zvs and zcs soft switching resonant circuit 分析比较zvs 、 zcs两种谐振型软开关的基础上，选择了zvs串联谐振逆变器。
Detailed analysis is made to the configurations , working principle , control strategy and control circuit of the inverter with soft switch 对这种软开关逆变器的构成、工作原理、控制策略和控制电路进行了详细分析。
Hopefully , the work of this thesis would contribute to the application of soft switching technology to multilevel dc / dc converters 本文的工作为软开关多电平技术在dc dc变换器领域的应用和实用性方面做出了贡献。
