What is Excitation System? Excitation is the technique of creating a magnetic field using an electric current. An excitation system’s primary job is to supply direct current to the synchronous machine field winding. The excitation system regulates the field voltage and field current to carry out control and protective tasks necessary for the power system …
What is DC Chopper? DC Choppers are static devices that change a set DC input voltage into a variable DC output value. Essentially, it functions as a high speed ON/OFF semiconductor switch. It can be viewed as the DC equivalent of an AC transformer because of how they both operate. The output of the DC …
What is Alternator? A machine that transforms mechanical energy into electrical energy in the form of alternating current at a particular voltage and frequency is referred to as an alternator. Synchronous generators are another name for alternators. The only form of energy that is converted is an alternating current. Most alternators use a spinning magnetic …
Within a circuit it is often necessary to have different voltages at different stages and we can achieve this by using resistors. For example, if we physically opened up a resistor and connected its ends across a supply, we would find that, if we then measured the voltage at different points along the resistor, the …
