多电飞机中高效高功率密度伺服控制器设计  

Design of a High-efficiency and High-power-density Servo Drive in More Electric Aircraft

作　　者：柯一洲 姚文熙[1] KE Yizhou;YAO Wenxi(College of Electrical Engineering,Zhejiang University,Hangzhou 310027,China)

机构地区：[1]浙江大学电气工程学院,浙江杭州310027

出　　处：《电工技术》2024年第12期87-90,93,共5页Electric Engineering

摘　　要：高效、高功率密度和高功重比是飞机电力作动系统伺服控制器的发展趋势。分析了限制伺服控制器功率密度提升的关键因素,从功率器件、母线电容和机械结构展开研究。采用分立SiC器件多管并联方案,通过权衡效率和功率密度设计功率器件的并联数量;建立电容电流应力、电压纹波与电容的数学关系,给出了最小体积的电容设计方案;采用立体式板卡和双面贴装散热设计了紧凑型机械结构来提升功率密度。最后设计出功率50 kW、功率密度11 kW/L的样机。High efficiency,high power density and high specific power are the development trends of servo drives of aircraft electric actuation systems.In this paper,three key factors affecting power density,i.e.,power devices,DC-link capacitors,and structural design,were analyzed.First the discrete SiC MOSFETs parallel connection was used and the number of parallel power devices was designed by weighing efficiency and power density.Second the mathematical relationship between capacitor current stress and ripple magnitude and capacitance value was established,and the capacitance scheme with minimum volume was given.Finally the compact mechanical structure was designed to improve power density by using discrete boards and double-side mounted heat dissipation.Based on the above techniques,a prototype with a power of 50 kW and a power density of 11 kW/L was designed.

关 键 词：SiC MOSFET 伺服控制器 多电飞机 高功率密度 高功重比 

分 类 号：TM306[电气工程—电机]