用于系留式无人机高变比谐振变换器设计

Research of high ratio resonant converter for tethered UAV

系留式无人机可应用于高空基站、边界巡视等特殊领域。针对系留式无人机供电系统高变比、大功率的特殊需求,提出了基于四变压器的高变比谐振变换器拓扑,通过原边串联、多模块副边并联可有效提高其功率密度,四变压器谐振网络可实现软开关及高变比设计需求。基于PSIM软件搭建的仿真模型验证了理论分析的可行性。

The tethered UAV(unmanned aerial vehicle)can be used in high-altitude base station,border patrol and other special fields.In view of the special requirements of high ratio and high power of the tethered UAV power supply system,a high ratio resonant converter topology based on four-transformers was proposed.The power density can be effectively improved by series connection of the primary side and parallel connection of the secondary sides of multiple modules.The four-transformer resonant network can meet the design requirements of soft switching and high ratio.Further,the simulation model based on PSIM proves the feasibility of the theoretical analysis.