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Unformatted text preview: (This is for normal step operation). It is desired that the number of rotor teeth is less than 8 and than that the number of phases is less than 8. Sketch the configuration of such a machine. Your answer should be analogous to Fig 8.2-3 on Slide 13 of the lecture notes. CONTINUED ON NEXT PAGE Problem 3- ECE595 Only A stepper motor has the following flux-linkage equations. 10 5cos(4 ) 1000 10 5cos(4 2 / 3) 1000 10 5cos(4 2 / 3) 1000 rm as as rm bs bs rm cs cs i i i θ λ π-=--=-+ = where rm is measured in the CCW direction. The machine is stepped in an a-b-c-a-b-c … sequence with no load torque. What will be the direction of rotation ?...
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- Spring '08
- Electric motor, stable equilibrium point, Torque Versus Position