A 5.6 kW 11.7 kW per kg Four-Phase Interleaved Buck Converter for the Unmanned Aerial Vehicle

Autor: Zhimin Liang, Yulong Yang, Dianlong Wang, Zhenzhen Peng, Zhiwei Shao, Xu-Feng Cheng, Wu Chaofeng
Rok vydání: 2021
Předmět:
Zdroj: Journal of Electrical Engineering & Technology. 17:1077-1086
ISSN: 2093-7423
1975-0102
DOI: 10.1007/s42835-021-00921-3
Popis: This paper proposed a 5.6 kW 11.7 kW/kg four-phase interleaved buck converter (FPIBC) for the unmanned aerial vehicle (UAV) low-voltage power system. The UAV mainly concerns the lightweight strategy and the power density of the DC-DC converter. We proposed a comprehensive lightweight strategy with the characteristics of reduced inductor current ripples, small size of filter inductors and capacitors, and high output power. The output current ripples are reduced by using interleaved modulation strategy and integrated CLC filters cascaded to the input side and output side respectively. In addition, the aluminum based printed circuit board (PCB) is used with SMD power transistors to obtain better heat dissipation capability without fans. With abovementioned methods, the designed DC-DC converter has a power of 5.6 kW @ 0.48 kg, the power-to-weight ratio is improved to be 11.7 kW/kg, and the power density is 3 W/cm3. The efficiency of this DC-DC converter is up to 95.8%.
Databáze: OpenAIRE
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