FIT rate of power semiconductors: What are the main factors? FIT rate (FIT = Failure In Time) is a common indicator to express the reliability of a semiconductor. And, as we know, reliability and availability is crucial for almost any customer. Therefore, the legitime question is: what are the main Read more…
IGBT versus IGCT power semiconductors – A brief comparison Semiconductor is the heart of any power electronic equipment. In medium voltage range of variable frequency drives two types of power semiconductors emerged: Insulated Gate Bipolar Transistor (IGBT) and Integrated Gate-Commutated Thyristor (IGCT). Naturally, there are many (white)papers, articles and presentations Read more…
VFD switching frequency The heart of every variable frequency drive (VFD) is the power semiconductor. By switching on and off in a proper modulation scheme the frequency conversion functionality is achieved. Let’s look at various aspects of VFD switching frequency. Switching frequency of medium voltage VFDs Having medium voltage VFD Read more…