External rotor brushless DC motor

The utility model discloses an external rotor brushless DC motor, including the rotor shell, the permanent -magnetic clamp, stator winding, the combined drive circuit, the stator fixing base, the axle center, first bearing and second bearing, stator winding's outside is located to the outer she...

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Bibliographic Details
Main Authors FENG HONGFA, TAN ZIYUN, FENG HONGLIANG, FENG HONGXIAO, CHEN XIAO
Format Patent
LanguageEnglish
Published 16.12.2015
Subjects
CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
DYNAMO-ELECTRIC MACHINES
ELECTRICITY
GENERATION
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Summary:The utility model discloses an external rotor brushless DC motor, including the rotor shell, the permanent -magnetic clamp, stator winding, the combined drive circuit, the stator fixing base, the axle center, first bearing and second bearing, stator winding's outside is located to the outer shell of rotor, wherein the magnetic pole quantity of permanent -magnetic clamp is 5 and antipodal and be evenly distributed, stator winding including outer around 12 grooves stator core and around locating the three -phase stator winding on the stator core, combined drive circuit arrangement just is connected with stator winding above the rotor shell, and at the normal during operation of hall sensor according to three symmetrical sine wave alternating current of hall sensor's testing result output to stator winding and make the motor operation, hall sensor passes through back electromotive force and detect three symmetrical sine wave alternating current to stator winding of direct output when damaging, messenger's motor runs well. Compared with the prior art, the utility model discloses external rotor brushless DC motor still can run well after hall sensor damages at present, and power is lower.
Bibliography:Application Number: CN20152574467U