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Unformatted text preview: Show in detail that ms s s T sr s r L K L K =1 ' where ' sr L is given by (5.348) and ms L is given by (5.523). Problem 4 – SteadyState Operation Consider a 2phase machine with the following parameters: Ω = m r s 5 . 72 , 32 . 1 ' = = lr ls L L mH, 1 . 20 = m L mH, Ω = m r r 3 . 41 ' , and 4 = P . The load torque varies with the speed cubed, and is such that 50 Hp is required to spin the load at 1800 rpm. A balanced 2phase voltage source with of 3 / 460 V rms amplitude and 60 Hz frequency is applied to the machine. Taking the aphase voltage to be of zero reference, find the rotor speed, the phasor representation of the aphase current, the input power, the output power, and the efficiency....
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This note was uploaded on 04/08/2012 for the course ECE 321 taught by Professor Staff during the Spring '08 term at Purdue.
 Spring '08
 Staff

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