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首页> 外文期刊>Power Electronics, IET >Zero-voltage-switching DC/DC converter with three three-level pulse-width modulation circuit cells
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Zero-voltage-switching DC/DC converter with three three-level pulse-width modulation circuit cells

机译:带有三个三电平脉冲宽度调制电路单元的零电压开关DC / DC转换器

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摘要

This study presents a new soft switching DC/DC converter with current double rectifier to achieve zero-voltage switching for all power switches under a wide range of load condition. Three three-level pulse-width modulation circuit cells sharing the same power switches are adopted in the proposed converter to reduce the voltage stress of each switch at Vin/2 and achieve load current sharing. Therefore the current stress and power rating of the secondary side components are reduced. The current double rectifiers are used at the secondary side to reduce the output ripple current. The sizes of the magnetic components and output filter capacitance can be reduced. The circuit analysis and design consideration of the proposed converter are discussed in detail. The proposed converter can be used in high input voltage and high load current applications. Finally, experiments based on a 1.5 kW scale-down prototype are provided to verify the effectiveness of the proposed converter.
机译:这项研究提出了一种新的具有电流双整流器的软开关DC / DC转换器,以在各种负载条件下实现所有电源开关的零电压开关。提出的转换器采用三个共享相同功率开关的三电平脉宽调制电路单元,以降低每个开关在Vin / 2时的电压应力,并实现负载电流共享。因此,减小了次级侧部件的电流应力和额定功率。二次侧使用电流双整流器以减小输出纹波电流。磁性元件的尺寸和输出滤波器电容可以减小。详细讨论了所提出的转换器的电路分析和设计考虑。拟议的转换器可用于高输入电压和高负载电流应用。最后,提供了基于1.5 kW比例缩小原型的实验,以验证所提出的转换器的有效性。

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