A new three-phase Cuk-derived power factor corrected (PFC) converter with only three switches for more electric aircraft is presented. The proposed converter benefits limited components for its operation, and only one semiconductor from each phase is in the current conduction path throughout the converter operation that substantially reduces the conduction losses leading to high efficiency and low converter thermal management. Further, the control effort required for converter operation is very less as all the three switches are driven by one gate signal. The converter output inductors are designed for discontinuous current operation for the entire converter power range to realize natural PFC at ac power source. The converter control is very simple, economical, and reliable since only one sensor is required for implementation. A detailed discussion on the converter steady-state operation for one switching cycle is presented. The converter small-signal model and the design expressions are derived to ease the converter control and the design. Further, the feasibility of the proposed scheme and the design are validated with the experimental results from a 2-kW laboratory prototype.

中文翻译：

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一种基于 Cuk 的三相单传感器 PFC 转换器，减少了元件数量，适用于更多电动飞机


提出了一种新型三相 Cuk 派生功率因数校正 (PFC) 转换器，只需三个开关，适用于更多电动飞机。所提出的转换器有利于其运行的有限组件，并且在整个转换器运行过程中，每相只有一个半导体处于电流传导路径中，这大大减少了传导损耗，从而实现高效率和低转换器热管理。此外，由于所有三个开关均由一个栅极信号驱动，因此转换器操作所需的控制工作量非常少。转换器输出电感器设计用于在整个转换器功率范围内进行不连续电流操作，以在交流电源上实现自然 PFC。该转换器控制非常简单、经济且可靠，因为只需要一个传感器即可实现。详细讨论了一个开关周期的转换器稳态运行。推导了变换器小信号模型和设计表达式，以简化变换器的控制和设计。此外，通过2kW实验室原型机的实验结果验证了所提出方案和设计的可行性。