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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 (5.3-48) and ms L is given by (5.5-23). Problem 4 – Steady-State Operation Consider a 2-phase 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 2-phase voltage source with of 3 / 460 V rms amplitude and 60 Hz frequency is applied to the machine. Taking the a-phase voltage to be of zero reference, find the rotor speed, the phasor representation of the a-phase 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