| 一种半桥三电平ZVS PWMDC/DC变换器的研究 |
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| 引用本文： | 周华敏,徐波,张前,王陶.一种半桥三电平ZVS PWMDC/DC变换器的研究[J].电力电子技术,2010,44(8). |
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| 作者姓名： | 周华敏 徐波 张前 王陶 |
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| 作者单位： | 深圳中兴通讯股份有限公司,广东深圳,518055 |
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| 摘 要： | 介绍了一种半桥三电平ZVS PWM DC/DC变换器,在Buck电路小信号模型的基础上结合变换器的工作原理,推导了变换器的小信号模型,为设计控制器的校正传递函数提供了理论基础.提出了一种基于数字控制的滞后管变占空比的控制方式,轻载时实现了滞后管的ZVS,降低了滞后管的电压尖峰,提高了变换器的效率.最后设计了一款5.8 kw的产品,其性能和指标满足设计要求,验证了理论分析的正确性.
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| 关 键 词： | 变换器 数字控制 零电压开关 小信号模型 |
The Investigtion of Half-bridge Three-level ZVS PWM DC/DC Converter |
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| ZHOU Hua-min,XU Bo,ZHANG Qian,WANG Tao.The Investigtion of Half-bridge Three-level ZVS PWM DC/DC Converter[J].Power Electronics,2010,44(8). |
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| Authors: | ZHOU Hua-min XU Bo ZHANG Qian WANG Tao |
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| Affiliation: | ZHOU Hua-min,XU Bo,ZHANG Qian,WANG Tao(ZTE Corporation,Shenzhen 518055,China) |
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| Abstract: | A half-bridge three-level ZVS PWM DC/DC converter is introduced,the small-signal model is deduced accord-ing the small-signal model of Buck and the operation principle of the converter.After designing the correcting transfer function,the control method of variable duty is proposed which bases on digital control.ZVS of the lagging-leg is achieved,the voltage spike is suppressed and the efficiency is enhanced with low load.Finally,production on a prototype of 5.8 kW confirms that the design satisfies the perf... |
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| Keywords: | converter digital control zero-voltage-switching small-signal model |
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