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Torque Equation of DC Motor

Torque Equation of DC Motor: When dc voltage is applied to the armature of a dc motor with its field excited by dc, a torque is developed and the armature…

Starting Methods of Synchronous Motor for LCI

Starting Methods of Synchronous Motor for LCI: It has been pointed out that a Starting Methods of Synchronous Motor for LCI, even though complicated in its construction, has an advantage…

Current Source Inverter Fed Synchronous Motor Drive

Current Source Inverter Fed Synchronous Motor Drive: A synchronous motor draws a stator current which is independent of stator frequency when V/f and E/f are maintained constant and armature resistance…

Three Phase Synchronous Motor Fed From Cycloconverter

Three Phase Synchronous Motor Fed From Cycloconverter: DC link converter is a two stage conversion device which provides a variable voltage, variable frequency supply. Variable voltage, variable frequency supply can…

Synchronous Motor Drives

Synchronous Motor Drives: Variable frequency drives employing synchronous motor are receiving considerable interest, and are even becoming competitors to both induction motors and dc motors. These are popular as drives…

Static Scherbius Drive

Static Scherbius Drive: The main limitation of the Kraemer drive discussed is the operation at sub-synchronous range due to diode rectifier. Super synchronous speeds can be achieved if the power…

Thevenin Equivalent Circuit

Thevenin Equivalent Circuit: In many practical applications, it is always not necessary to analyse the complete circuit; it requires that the voltage, current, or power in only one resistance of…

Harmonic Reduction

Harmonic Reduction: The output voltage waveform of an inverter is non-sinusoidal. It contains a rich harmonic content. The Harmonic Reduction cause additional losses and torque pulsations if a three phase…