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Three-Phase Series Resonant DC-DC Boost Converter With Double LLC Resonant Tanks and Variable Frequency Control

机译:具有双LLC谐振槽的三相串联谐振DC-DC升压转换器和可变频率控制

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摘要

This paper proposes a three-phase inverter combined with two LLC resonant tanks series resonant DC-DC boost converter with variable frequency control. The three-phase inverter side of the proposed circuit is connected to identical two-level LLC tanks to ensure balanced resonant currents. The proposed converter requires less switching devices and transformers as compared to the conventional interleaved LLC resonant converter, which competitively offers higher efficiency and reduced size and cost. Furthermore, the proposed converter works above the resonant frequency to achieve zero voltage switching (ZVS) for the entire operating frequency range (42.5kHz
机译:本文提出了一种三相逆变器,与两个LLC谐振槽系列谐振DC-DC-DC升压转换器结合,具有可变频率控制。所提出的电路的三相逆变器侧连接到相同的两级LLC罐,以确保平衡谐振电流。与传统的交错LLC谐振转换器相比,所提出的转换器需要较少的开关装置和变压器,其竞争力地提供更高的效率和减少尺寸和成本。此外,所提出的转换器在谐振频率上方工作以实现所有开关的整个工作频率范围(42.5kHz

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