Rotary stepper motor and method of operation

Details Rotary stepper motor and method of operation Rotary stepper motor and method of operation

H - Electricity

02

K

318/17, 310/57

H02K 37/00 (2006.01) H02K 37/04 (2006.01) H02P 8/00 (2006.01)

Patent

CA 1044752

ROTARY STEPPER MOTOR AND METHOD OF OPERATION ABSTRACT OF THE DISCLOSURE A three phase rotary stepper motor of the variable reluctance type comprises a rotor and an annular stator having three pairs of diame- trically opposed stator poles wound with bifilar windings. The stator windings are connected so that opposed poles are energized as a pair having the same polarity. The bifilar winding is connected so that pole pairs are energized with either polarity. A two phase energi- zation scheme is used which causes adjacent poles of two pole pairs to have opposite polarity, while the third pole pair is magnetically neutral. Every three steps of the sequence the magnetically neutral pole pair is magnetized with the reverse polarity. - 1 -

266617

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