Lecture11

Lecture11 - Induced Voltage in Stator Coil P-Poles For a...

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Page 1 Fundamentals of Power Systems Lecture 11 1 Induced Voltage in Stator Coil – P-Poles z For a P-pole machine the flux per pole remains the same (integrating d φ =rlB m cos(P/2 α )d α over one pole pitch - π /P to + π /P ) z The electrical frequency becomes z Therefore, the induced voltage per pole-pair (one sub-winding) is z The entire phase winding consists of P/2 sub-windings connected in series resulting in the total induced phase voltage 2 M rlB φ = cos( ) 22 ind C m m PP eN t ωω = , cos( ) 2 ind pole C m m P t φω ω = 2 el m P = = cos( ) ind C t = Fundamentals of Power Systems Lecture 11 2 Example 4-2 (Book) z Additional question 2 ± Assuming the same field from the rotor, a rated current of I=10 A (RMS) in the stator at PF=0.8, a stator magnetic field of 0.4 mT/A-turn, and a stator resistance of 0.3 per phase, calculate the torque constant (k in Nm/T 2 ) in if the angle between the rotor field and the stator field space vectors is γ = -100° (assume k >0).
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This note was uploaded on 11/10/2011 for the course EEL 3216 taught by Professor Brooks during the Fall '08 term at FSU.

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Lecture11 - Induced Voltage in Stator Coil P-Poles For a...

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