ELE 747 Lecture Notes - Lecture 6: Synchronous Frame, Synchronous Motor, Induction Motor
9 Apr 2016
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Ele847 - week 6: midterm friday march 9th 8 -10 eng 102, extra office hours for midterm: thursday february 19th, 2004, 4-6pm, free acceleration characteristics asi (no load) close. No load i as max i as st st asi st st t. Transient st st (1) stator current asi asi. ,asi max (2) torque et vs. t et. 2et n: oscillations during start, average starting torque. Similar to curve from the steady state equivalent circuit sec. Te n (4) q-axis and d-axis currents qsi n dsi t t. Q: relationship between asi and qsi according to 2 to 3 transformation. i = as i qs i i i as bs cs. 1 i i i qs ds os (5) rotor speed n n t ssn)05. 0( (6) staring time n ssn stt ssn)05. 0( n ssn stt t (sec) t (sec) In steady state, si rotates in space at the same speed as the synch frame and dsi.
