Patent ID: 7965011

Claim:
A brushless DC motor structure with a constant ratio of multiple magnetic rotor poles to stator slots, comprising a rotor and a stator of the motor, where the stator of the motor is formed by a plurality of ferromagnetic silicon steel sheets, and the ferromagnetic silicon steel sheets providing a plurality of slots whose number is a multiple of 15, and the stator of the motor being formed by windings of three phases, X, Y, and Z, where each phase includes 2 to 4 phase portions and each phase portions has 5 slots; the rotor of the motor being made up of a plurality of arced magnets which are fixed orderly and equally along a ferromagnetic steel ring, and the radial direction of each arced magnet being opposite to that of the adjacent magnetic poles, where an arced magnet represents a magnetic pole, and the number of the magnetic poles being a multiple of 14 or 16.