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Cranes and Hoist Drives

Cranes and Hoist Drives: The Requirements of the Cranes and Hoist Drives are The motion of the crane hook is in all three dimensions. In crane drives, the acceleration and…

Drive Considerations for Textile Industry

Drive Considerations for Textile Industry: There are several processes involved by the dine the finished cloth comes out of a mill from its basic raw material, cotton picked up from…

Synchronous Speed on Variable Frequency Supply

Synchronous Speed on Variable Frequency Supply: As has already been discussed, the speed of a synchronous motor can be varied by supply frequency variation similar to an induction motor. The…

Speed Control Using Slip Energy Recovery Schemes

Speed Control Using Slip Energy Recovery Schemes: The foregoing discussion makes it very clear that the methods of voltage control and rotor resistance control have poor efficiency, particularly at low…

Features of Variable Voltage Inverters

Features of Variable Voltage Inverters: The inverter has an impressed dc voltage. The output voltage of the inverter is decided by the firing and duration of the thyristors. The conduction…

Charging a Capacitor in Inverter

Charging a Capacitor in Inverter: Charging a Capacitor in Inverter - Inverters are static power converters for converting dc to ac. By controlling the conducting periods of the thyristors it…

Types of Load in Power System

Types of Load in Power System: what is load in power system : A device which taps electrical energy from the electric power system is called a load on the…

Transient stability in Electrical Drives

Transient stability in Electrical Drives: Transient stability in Electrical Drives - From the preceding discussion it is clear that a drive is in its state of equilibrium at constant speed…