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首页> 外文期刊>Power Electronics, IEEE Transactions on >Automatic Mode-Shifting Control Strategy With Input Voltage Feed-Forward for Full-Bridge-Boost DC–DC Converter Suitable for Wide Input Voltage Range
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Automatic Mode-Shifting Control Strategy With Input Voltage Feed-Forward for Full-Bridge-Boost DC–DC Converter Suitable for Wide Input Voltage Range

机译：适用于宽输入电压范围的全桥式升压DC-DC转换器的带输入电压前馈的自动模式转换控制策略

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摘要

Full-bridge (FB)-boost converter is suitable for applications with wide input voltage range and galvanic isolation requirement, and a two-mode phase-shift (PS)-two-edge modulation (TEM) control scheme based on two modulation signals and one carrier can be used to achieve automatic mode shifting and high efficiency. In order to reduce the influence of the input voltage disturbance on the output voltage, the small-signal model of FB-boost converter is built and the input voltage feed-forward (IVFF) functions under different operating modes are derived in this paper. In view of the small-signal and large-signal control laws of the derived IVFF functions, the two-mode PS-TEM control schemes with small-signal and large-signal IVFF compensations are proposed, respectively. Both of them can realize automatic selection of operating modes and the corresponding IVFF compensations, and thus high efficiency and improved input transient response can be guaranteed. Besides, the IVFF function in boost mode is simplified for easy implementation, and the comparisons among the two-mode PS-TEM control schemes with small-signal, large-signal, and without IVFF compensations are presented in this paper. Finally, a 250–500-V input, 360-V output, and 6-kW-rated power prototype demonstrates the effectiveness of the proposed control schemes.
机译：全桥（boost）升压转换器适用于具有宽输入电压范围和电流隔离要求的应用，并且基于两个调制信号的双模相移（PS）-双边沿调制（TEM）控制方案适用于一个载波可用于实现自动模式转换和高效率。为了减少输入电压扰动对输出电压的影响，建立了FB升压转换器的小信号模型，推导了不同工作模式下的输入电压前馈（IVFF）函数。鉴于导出的IVFF函数的小信号和大信号控制律，分别提出了具有小信号和大信号IVFF补偿的双模式PS-TEM控制方案。它们都可以实现工作模式的自动选择和相应的IVFF补偿，因此可以保证高效率和改善的输入瞬态响应。此外，简化了升压模式下的IVFF功能，易于实现，并给出了具有小信号，大信号和无IVFF补偿的两种模式PS-TEM控制方案的比较。最后，一个250-500V输入，360V输出和6kW额定功率的原型证明了所提出的控制方案的有效性。

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