基于SiC材料的高效功率器件——双极结型晶体管的响应特性

The Efficient Power Devices Based on SiC Material——Response Characteristic of Bipolar Junction Transistor

作为最受关注的SiC材料之一的双极结型晶体管(Bipolar Junction Transistor,BJT),具有特定的低阻抗、快速开关和对温度依赖性小的优点。由于其具有大短路电流、无二次击穿,因而具有可靠的工作性能。本文针对该器件,研究了与实际应用有直接联系的特性,并通过设计的一个驱动器做了减少功率损耗的测试研究。随着光伏系统所面临的降低成本的压力要求,其它的一些节能实验不光是集中在SiC技术上,还包括核心材料方面。基于此目的,在实验室测试了设计的一个额定功率为17kW的逆变器,并给出了结果。

BJT（Bipolar Junction Transistor）, as one of the most-watched SiC materials, has the advantages of low impedance, fast- switching, low dependence on temperature. As for the device, this paper is concerned with the features having direct connection with practical application, having a testing research on reducing power consumption by a designed drive. With the requirement of photovoltaic system to lower the cost, other energy-saving experiments focus not only on SiC technology, but on core materials. Thus, we test a designed inverter with 17kW rated power and get the result.