That is why you can see it in its name too it is a combination of both FET (IG) and BJT (BT). It has the gate function of FET and the low saturation voltage/output characteristics of a BJT. In this way, an IGBT behaves like a switch on when the gate is open and flowing current and off when it is closed. When voltage is removed from the gate, it closes and blocks the current to flow between the collector and emitter. When voltage is applied to the gate, it opens and allows the current to flow between the collector and emitter. The standard transistor has three terminals – gate, collector, and emitter. IGBT is a more advanced type of transistor.
Basically, the family of transistors consists of three main types – BJT (Bipolar Junction Transistor), FET (Field Effect Transistor), and IGBT (Insulated Gate Bipolar Transistor). In this post, we will learn the role of IGBT in VFD. We all know how semiconductors play an important role in fast processing. VFD has many components inside it and semiconductors are extensively used in its design.
This is because variable speed is required in almost all applications. As it is used to vary the speed of the motor, it is applicable in many processes. The variable frequency drive (VFD) is a very important equipment in industrial automation.
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