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首页> 外文期刊>Power Electronics, IET >Two- and three-winding coupled-inductor-based high step-up DC–DC converters for sustainable energy applications
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Two- and three-winding coupled-inductor-based high step-up DC–DC converters for sustainable energy applications

机译：基于两绕组和三绕组耦合电感的高升压DC-DC转换器，用于可持续能源应用

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摘要

This study proposes two configurations for a non-isolated, high step-up, single-switch, coupled-inductor-based DC-DC converter. A coupled inductor and voltage multiplier cells are used in the presented topologies to obtain a high voltage gain. Also, a passive clamp circuit is applied in the topologies to reduce voltage stress of the main power switch. This leads to utilising a power switch with lower on-state resistance, which decreases the conduction loss. Several advantages such as low operating duty cycle, high voltage conversion ratio, reduced voltage stress of semiconductors, low turn ratio of the coupled inductor, leakage inductance energy recovery and high efficiency operation make the presented structures appropriate for sustainable energy applications. The operational principle and steady-state analysis of the suggested topologies in continuous conduction mode are expressed in detail. Also, design procedure and theoretical efficiency of the topologies are presented. Then, the suggested topologies are compared with several similar high step-up topologies to prove their advantages. Finally, the performance and feasibility of the proposed DC-DC converter configurations are confirmed through experimental measurement results of 29 V input and 435 V/213 W and 480 V/238 W output laboratory prototypes at 50 kHz switching frequency.
机译：这项研究针对非隔离，高升压，单开关，基于耦合电感的DC-DC转换器提出了两种配置。在提出的拓扑中使用了耦合的电感器和倍压单元，以获得高电压增益。而且，在拓扑结构中应用了无源钳位电路，以减少主电源开关的电压应力。这导致使用具有较低导通电阻的电源开关，从而降低了传导损耗。低工作占空比，高电压转换比，半导体的电压应力降低，耦合电感器的匝数比低，漏感能量回收和高效运行等诸多优点使所提出的结构适合于可持续能源应用。详细介绍了在连续导通模式下建议拓扑的工作原理和稳态分析。此外，介绍了拓扑的设计过程和理论效率。然后，将建议的拓扑与几种类似的高阶拓扑进行比较，以证明其优势。最后，通过在50 kHz开关频率下29 V输入和435 V / 213 W和480 V / 238 W输出实验室原型的实验测量结果，证实了所提出的DC-DC转换器配置的性能和可行性。

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