Table of Contents
How do you calculate the efficiency of a single phase induction motor?
The efficiency is measured by dividing the total losses by two. – Method F: Equivalent circuit calculation. This is usually the least accurate way to calculated motor efficiency because such a large portion of losses are not directly measured.
What is the formula for power output?
Power = force multiplied by speed (velocity) P = F × v….ALTERNATING CURRENT (AC) ~
Current (single phase): I = P / Vp×cos φ | Current (3 phases): I = P / √3 Vl×cos φ or I = P / 3 Vp×cos φ |
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Power (single phase): P = Vp×Ip×cos φ | Power (3 phases): P = √3 Vl×Il×cos φ or P = √3 Vp×Ip×cos φ |
What is air gap power in an induction motor?
Air Gap Power in Induction Motor. Induction Motor works on the principle of electromagnetic induction. The three phase input power supplied to stator terminal is converted into mechanical power at the shaft output. This conversion of energy takes place through magnetic coupling between stator produced rotating magnetic flux and rotor bars.
What is a 3 phase induction motor?
The 3 phase Induction motor is popular for its efficiency and is widely employed in the electric systems for doing mechanical work. The current flowing through motor depends on various factors including its voltage, power factor, efficiency and rated power.
How do you calculate input power and airgap power?
Input power is given by: = √3× 46.6 = 80.6 A P in v. Airgap power is the input power minus stator losses. In this case the core losses are grouped = 62.2 kW with rotational loss. Therefore P gap = 62.2 kW – 3× 46.6 2 × 0.461 P gap vi. Torque developed can be found from = 59.2 kW where synchronous speed in radians per second is given by
What is service factor of induction motor?
Service factor is the ratio of actual maximum power to the rated power mentioned on the plate of the motor. Example # 1: A 230 volt three phase, 1/2 HP induction motor has an efficiency rating of 88\% and a power factor of 85\%. Find the amp-load of the motor.