Chopper Control of Separately Excited DC Motor
A chopper is a device that converts a fixed direct - current (DC) voltage into a variable DC voltage. Self - commutated devices, such as Metal - Oxide - Semiconductor Field - Effect Transistors (MOSFETs), Insulated - Gate Bipolar Transistors (IGBTs), power transistors, Gate - Turn - Off Thyristors (GTOs), and Integrated Gate - Commutated Thyristors (IGCTs), are commonly used in the construction of choppers. These devices can be turned on or off directly via a gate control signal using low - powe