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作为最受关注的SiC材料之一的双极结型晶体管BJT(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。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1 7kW的逆变器,并给出了结果。
BJT (BJT), one of the most concerned SiC materials, has the particular advantage of low impedance, fast switching and low temperature dependence. Because of its large short-circuit current, no secondary breakdown, which has a reliable work. In this paper, we study the direct connection with the practical application of the device, and do a test to reduce the power loss through a designed driver. As PV systems face the pressure to reduce costs, other energy-saving experiments focus not only on SiC technology but also on core materials. For this purpose, a designed inverter with a rated power of 17 kW was tested in the laboratory and the result was given.