碳化矽高功率密度電動汽車驅動器開發

Development of a SiC-based High-Power Density Electric Vehicle Traction Inverter

吳至強 ； 張欣宏

《機械工業雜誌》 469期 (2022/04) Pp. 86-94

摘要

本研究目的為開發一高功率密度及高效率馬達驅控器，特別針對電壓與元件做升級優化，導入碳化矽功率元件，以達成98 %驅控器效率及單位體積功率密度40 kW/L之目標，後續將整合驅控系統做整體性能優化，以進一步改善系統體積及精進功率密度。本研究探討高壓高功率馬達驅控器的設計流程，包含：SiC高壓功率開關，直流鏈結電容規格的設計選用，雙脈衝測試，溫度估測技術，及驅控器機構布局。我們已成功開發出國內首例碳化矽馬達驅控器，具備98.4%高效率及42.8 kW/L高功率密度，可應用於高壓大功率之電動貨車或巴士，提供動力驅控器國產自主開發方案。

關鍵字

馬達驅動器 ； 碳化矽 ； 高功率密度

並列摘要

The purpose of this research is to develop a high power density and efficiency electric vehicle traction inverter, especially focusing on voltage and component upgrade optimization, and using silicon carbide power devices, in order to achieve 98 % driver efficiency and a unit volume power density of 40 kW/L. We will integrate the drive and control system to optimize the overall performance in the next stage, so as to further improve the system volume and power density. This article discusses the design process of a high-voltage and high-power motor driver, including design selection of SiC high-voltage power transistors, DC-link capacitor specifications, double-pulse test, temperature estimation technology, and motor driver mechanism layout. At present, the first domestic silicon carbide motor driver has been successfully developed. It has a high efficiency of 98.4% and a high power density of 42.8 kW/L. It can be applied to high-voltage and high-power electric trucks or buses, and provides domestic independent development solutions for power drivers.

並列關鍵字

Motor drive ； Silicon carbide ； High power density

參考文獻

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