Field control of DC motor

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asked Aug 9, 2017 by anonymous

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anonymous · Answer 1 · 2017-08-09T16:09:19+0000

Field control of DC motor

•In field control of DC motor terminal voltage is kept constant.

•The field flux (φ_f) is directly proportional to the field current (I_f) .

•Speed (N) is inversely proportional to field flux (φ_f) .

•So as the field flux (φ_f) will be less speed (N) will be more.

•If the current is less field flux (φ_f) is less hence the speed (N) will be more.

•We can control speed by field diverter method or by using tapped field control.

anonymous · Answer 2 · 2017-08-25T09:17:17+0000

answered Aug 25, 2017 by anonymous

Field control of DC motor

Field control of DC motor

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