Forces and fields in a current-carrying conductor
(a) Field produced by a current-carrying conductor in a slot.
(b) Air-gap field due to stator excitation and no current;symmetrical slot
field.
(c) Asymmetrical field due to combined action of conductor current and stator
excitation. Force is mainly exerted on the rotor iron core and not on the
conductor.
(d) Force on a current-carrying conductor of lenght l in a magnetic field.
(e) Voltage induced in a conductor due to its motion through an external
magnetic field (flux-cutting rule).
©
M. Riaz
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