Lecture #4Rotating field in AC machineslaIm cos(wt)In = Imcos(wt + 120)Ic = Imcos(wt – 120)%3DImIcCwt = 0ot = 60wta-Imwt = 120wt = 60:wt = 0wt = 120Dr. Ali Karimpour Mar 2021Lecture #4Torque determination in cylindrical AC Machine (Electromagnetic view point)"e = 0la = Imcos(wt)Im cos(wt + 120)4 kwNaHIh =T 2gIm7 cos(0 – wt)a' OIc = Imcos(wt – 120)e = 0Q1: What does happen if we change two currents?Q2: What does happen if we have a three-phase four poles machine?Q3: What does happen if we have a two-phase two poles machine?e = 0Q4: What does happen if we apply a capacitance in phase b and then use samevoltage for both phase.Dr. Ali Ka....p. -

If we change two currents it means when you change the direction of the current ,you also changing…

Lecture #4 Rotating field in AC machines la = Imcos(wt) In = Imcos(wt + 120) Ic = Imcos(wt – 120) %3D b' Im La Ic wt = 0 ot = 60 wt a -Im wt = 120 wt = 60: wt = 120 wt = 0 Dr. Ali Karimpour Mar 2021 Torque determination in cylindrical AC Machine (Electromagnetic view point) Lecture #4 e = 0 la = Imcos(wt) Ib = ImCos(wt + 120) H¸ = KNa Im cos(0 – wt) T 2g %3D Im7 cos(0 – wt) %3D Ic = Imcos(wt – 120) e = 0 Q1: What does happen if we change two currents?

Lecture #4 Rotating field in AC machines la = Imcos(wt) In = Imcos(wt + 120) Ic = Imcos(wt – 120) %3D b' Im La Ic wt = 0 ot = 60 wt a -Im wt = 120 wt = 60: wt = 120 wt = 0 Dr. Ali Karimpour Mar 2021 Torque determination in cylindrical AC Machine (Electromagnetic view point) Lecture #4 e = 0 la = Imcos(wt) Ib = ImCos(wt + 120) H¸ = KNa Im cos(0 – wt) T 2g %3D Im7 cos(0 – wt) %3D Ic = Imcos(wt – 120) e = 0 Q1: What does happen if we change two currents?

Introductory Circuit Analysis (13th Edition)

13th Edition

ISBN:9780133923605

Author:Robert L. Boylestad

Publisher:Robert L. Boylestad

Chapter1: Introduction

Section: Chapter Questions

Problem 1P: Visit your local library (at school or home) and describe the extent to which it provides literature...

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