Abstract: An outer-rotor permanent magnet brushless motor is disclosed, which comprises an outer-rotor and an inner-stator. The outer-rotor configured with P poles, P is a natural number and denotes a multiple of 4. The inner-stator has a stator axle, and S teeth which configured on outer surface of stator, S=P?1, S is a natural number. A circle is formed about a center of the stator axle from the center of the outer end surface. A correction angle a1 and an original angle a are defined from the center of the outer end surface. T The ratio of a1/a is defined by the following formula: 0.2<(a1/a)<0.6.

Abstract: An outer-rotor permanent magnet brushless motor is disclosed, which comprises an outer-rotor and an inner-stator. The outer-rotor configured with P poles, P is a natural number and denotes a multiple of 4. The inner-stator has a stator axle, and S teeth which configured on outer surface of stator, S=P?1, S is a natural number. A circle is formed about a center of the stator axle from the center of the outer end surface. A correction angle a1 and an original angle a are defined from the center of the outer end surface. T The ratio of a1/a is defined by the following formula: 0.2<(a1/a)<0.6.

Abstract: A power supply with electrical energy management, applied to variable speed blowing devices includes a rectification unit with a power factor correction function, a DC voltage stabilizing unit, a control unit, an input unit, a communication unit, at least one DC voltage regulator unit with an electrical energy measuring function, and at least one variable speed blowing devices. The rectification unit and the DC voltage stabilizing unit can use AC and DC as the power sources, respectively. The control unit utilizes the input information of the input unit and the electrical energy measuring information of the at least one DC voltage regulator unit to adjusts the output terminal voltages of the at least one DC output voltage regulator unit via applying a priority method, so that the load-shedding operation of the variable speed blowing device can be performed to meet the optimal regional demand control.