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eUq3FW-Lecture11

# eUq3FW-Lecture11 - Induced Voltage in Stator Coil P-Poles...

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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 I =rlB m cos(P/2 D )d D over one pole pitch - S /P to + S /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 I cos( ) 2 2 ind C m m P P e N t IZ Z , cos( ) 2 ind pole C m m P e N t IZ Z 2 el m P Z Z Z cos( ) ind C e N t IZ Z 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 J = -100° (assume k >0).

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eUq3FW-Lecture11 - Induced Voltage in Stator Coil P-Poles...

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