Although conventional dual-active-bridge (DAB) dc_dc converters have been applied in more-electric aircraft, the maximum transmission power of conventional DAB converters is still limited by its structure. In order to increase the maximum transmission power, this article proposes a novel interleaved parallel bidirectional DAB converter. Two bidirectional buck/boost converters are applied in low-voltage side of the proposed converter. So the voltage of transformer primary side would not be limited by the voltage of low-voltage bus and can be controlled by the duty cycle according to the modulation strategies. In this article, three phase-shift control methods are used for the proposed topology. From the analysis of operation modes and power characteristics of the proposed topology, compared with the single phase-shift (SPS), the extended phase shift can reduce the reactive power and current stress. The pulsewidth modulation (PWM) plus single phase-shift (PWMSPS) can achieve more than twice of the maximum transmission power of conventional DAB converter. Finally, test results verify the theoretical analysis and the validity of the proposed converter.

中文翻译：

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用于多电动飞机的新型交错并联双向双有源桥DC__C转换器与耦合电感器


尽管传统的双有源桥（DAB）dc_dc转换器已在多电飞机中得到应用，但传统DAB转换器的最大传输功率仍然受到其结构的限制。为了提高最大传输功率，本文提出了一种新型交错并行双向DAB转换器。两个双向降压/升压转换器应用于所提出转换器的低压侧。因此，变压器初级侧的电压将不受低压母线电压的限制，并且可以根据调制策略通过占空比来控制。在本文中，所提出的拓扑使用了三种相移控制方法。从所提出的拓扑的工作模式和功率特性分析来看，与单相移（SPS）相比，扩展相移可以减少无功功率和电流应力。脉宽调制（PWM）加上单相移（PWMSPS）可以实现传统DAB转换器最大传输功率的两倍以上。最后，测试结果验证了理论分析和所提出转换器的有效性。