Partial Discharge Measurements: Earlier the testing of insulators and other equipment was based on the insulation resistance measurements, dissipation factor measurements and breakdown tests. It was observed that the dissipation…
Switchgear Equipments: Switchgear covers a wide range of equipment concerned with switching and interrupting currents under both normal and abnormal conditions. It includes switches; fuses, circuit breakers, relays and other…
Booster Generator: A Booster Generator is a D.C. generator whose function is to inject or add certain voltage into a circuit so as to compensate the IR drop in the…
Margin Angle Control of Synchronous Motors: The commutation Margin Angle Control of Synchronous Motors is defined as the angle measured from the end of commutation to the crossing of the…
Microprocessor Control of a Current source Inverter Fed Synchronous Motor: A drive system employing a Current source Inverter Fed Synchronous Motor has the following features: A four quadrant drive can…
Control of DC Drives Using Microprocessors: The dc motors fed from thyristor converters for variable speeds are being exÂtensively used in general industrial applications. A dual converter, which is a…
Speed Detector: One important factor in the closed loop control of variable speed drives emÂploying solid state converters is the Speed Detector. In the dedicated hardware control using analog components,…
Hardware Systems Versus Microprocessor Control: The Hardware Systems Versus Microprocessor Control control of electric drives offers the following advantages when compared to the dedicated hardware control. As has already been…