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首页> 外文期刊>電気学会論文誌 D:產業応用部門誌 >PWM Converter Power Density Barriers
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PWM Converter Power Density Barriers

机译：PWM转换器功率密度壁垒

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摘要

Power density of power electronic converters has roughly doubled every 10 years since 1970. Behind this trajectory is the continuous advancement of power semiconductor devices, which has increased the converter switching frequencies by a factor of 10 every decade. However, today's cooling concepts and passive components are major barriers for a continuation of this trend. To identify such technological barriers, this paper investigates the volume of the cooling system and passive components as a function of the switching frequency for power electronic converters and determines the switching frequency that minimizes the total volume. A power density limit of 28 kW/dm~3 at 300 kHz is calculated for an isolated DC-DC converter, 44 kW/dm~3 at 820 kHz for a three-phase unity power factor PWM rectifier, and 26kW/dm~3 at 21 kHz for a sparse matrix converter. For single-phase AC-DC conversion a general limit of 35 kW/dm~3 results from the DC link capacitor. These power density limits highlight the need to broaden the scope of power electronics research to include cooling systems, high frequency electromagnetics, interconnection and packaging technology, and multi-domain modelling and simulation to ensure further advancement along the power density trajectory.
机译：自1970年以来，电力电子转换器的功率密度大约每10年增加一倍。在此轨迹的背后是功率半导体器件的不断发展，这使转换器的开关频率每十年增加10倍。但是，当今的冷却概念和无源组件是继续保持这种趋势的主要障碍。为了确定此类技术障碍，本文研究了功率电子转换器的冷却系统和无源组件的体积与开关频率的关系，并确定了使总体积最小的开关频率。对于隔离式DC-DC转换器，计算出300 kHz时的功率密度极限为28 kW / dm〜3，对于三相一体式功率因数PWM整流器，在820 kHz时的功率密度极限为44 kW / dm〜3，而26kW / dm〜3对于稀疏矩阵转换器，频率为21 kHz。对于单相AC-DC转换，直流母线电容器一般限制为35 kW / dm〜3。这些功率密度限制凸显了将功率电子学研究范围扩大到包括冷却系统，高频电磁，互连和封装技术以及多域建模和仿真以确保沿功率密度轨迹进一步发展的需要。

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