The duty ratios of switches in each switching cycle can be directly obtained by simple calculation using two phases source currents and dc bus capacitor voltage.
只需检测两相电源电流和直流侧电容电压，通过简单计算就可直接求出每个开关周期内各开关的占空比。
The difference of leading switches and lagging switches to realize the zero-voltage switching and the reason of duty-cycle loss is emphatically argued.
重点讨论了超前管、滞后管实现零电压开关的差异以及副边占空比丢失的原因。
After analysis of the characteristics of some typical circuit networks, the method of using switching mode network integrated with duty cycle control to solve the matching problem is proposed.
然后通过对几种典型电路网络的特性分析，提出了利用开关变换网络结合占空比控制设计以解决燃料电池与负载的匹配问题的思想。
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