EE362 Homework 6 due May 3

EE362 Homework 6 due May 3 - i. Electromechanical torque,...

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EE 362 Homework 6 due May 3, 2010 1. Show that the induced stator voltage per phase of a 3-phase induction machine is given by E 1 = 4,44 (k ws . N s ) f ( A B ˆ 1 ) Where, k ws – winding factor of stator phase N s – actual number of series turns in each stator phase f – stator frequency - peak value of the space fundamental component of air-gap flux-density. A – pole area 2. Derive the following expressions for a 3- phase induction motors
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Unformatted text preview: i. Electromechanical torque, ii. Rotor current, iii. Air-gap power, iv. Internal mechanical power (Gross mechanical output power), v. Starting torque and current, vi. Maximum torque and corresponding slip, vii. Maximum internal power and corresponding slip, viii. Approximate efficiency, (1- s)...
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This note was uploaded on 01/30/2011 for the course EE 362 taught by Professor Ermis during the Spring '10 term at Middle East Technical University.

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