Category: ELECTRIC DRIVES

Stepper Motor Classification

Stepper Motor Classification: The Stepper Motor Classification based on the construction and principle of operation. These are Variable reluctance motors Permanent magnet motors Hybrid stepping motors Claw pole motors with permanent magnets The stepper motors are used for linear motors also. These are also classified as ‘variable reluctance motors’ and ‘permanent magnet motors’. Variable Reluctance […]

Features of Stepper Motor

Features of Stepper Motor: The Features of Stepper Motor are small step angle high positioning accuracy high torque to inertia ratio stepping rate and accuracy Small Step Angle: The angle by which the rotor of a stepper motor moves when one pulse is applied to the (input) stator is called step angle. This is expressed […]

Stepper Motor Applications

Stepper Motor Applications: The microprocessors are employed for the control of stepper motors which are generally used as position actuators. Some other Stepper Motor Applications are to drive floppy discs, numerical control of machine tools, X-Y plotters etc. The ease with which these can be controlled using microprocessor has made them very popular in the […]

Inverter Control using Terminal Voltage Sensing

Inverter Control using Terminal Voltage Sensing: The Inverter Control using Terminal Voltage Sensing of the synchronous motor is obtained using the triggering pulses to the inverter which are synchronized with the rotor position. These signals are obtained by processing the phase reference signals P1,P2,P3 and a high frequency signal S4 obtained from a shaft encoder. This shaft encoder […]