Disk birotor dual veer DC brushless motor

Abstract

The invention discloses a disc dual-rotor dual-rotation direction dc brushless motor, which comprises: a base, an end cap on two ends of base, a stator with a disc stator core fixed between rotors and a disc stator winding sector-shaped coiled on core, two rotors with inner surface as N and S-pole permanent magnets and arranged vertically in base, and output shaft with one end fixed on outer surface of rotor ad another end extended out the cap. Wherein, the two side surfaces of stator core are opposite to the inner surfaces of rotor; the stator core has same current direction as winding coil on same side while the current direction of two windings opposite. This invention has simple structure, runs reliably, and can reduce cost and energy consumption.

Description

technical field [0001] The invention relates to a motor, in particular to a DC brushless motor. Background technique [0002] The DC motors currently used all need a reversing device to maintain the continuous operation of the rotor. Traditional DC motors usually use brushes to commutate mechanically, but this method has defects such as severe mechanical friction, large noise and sparks, and short life. At the same time, high manufacturing costs and difficult maintenance make its development and use subject to limit. For this reason, DC brushless motors have developed rapidly in recent years. It uses a brushless electronic commutator for commutation. Although this method has many advantages such as reliable operation of AC motors and good speed regulation performance, it is simple and convenient. Direct current cannot work and must be operated through an electronic commutator, but the cost of the electronic commutator is too high. In addition, the brushless DC motor curre...

AI Technical Summary

Problems solved by technology

Traditional DC motors usually use brushes to commutate mechanically, but this method has defects such as severe mechanical friction, large noise and sparks, and short life. At the same time, high manufacturing costs and difficult maintenance make its development and use subject to limit

For this reason, DC brushless motors have developed rapidly in recent years. It uses a brushless electronic commutator for commutation. Although this method has many advantages such as reliable operation of AC motors and good speed regulation performance, it is simple and convenient. Direct current cannot work, it must pass through an electronic commutator to run, but the cost of the electronic commutator is too high

In addition, the brushless DC motor currently used has many components, usually consisting of the motor body (including the main stator and the main rotor), the electronic switch circuit (including the power logic switch and position signal processing) and the position sensor (including the sensor stator and the sensor rotor) ) structure, there are also defects such as high manufacturing cost, difficult assembly and maintenance, etc., thus limiting the application range of DC brushless motors

[0003] In addition, most of the rotors of existing motors are cylindrical, and the force on the rotor acts on the outer surface of the cylinder, and the torque it receives is small, so the torque is also small and the energy consumption is large

At the same time, the cutting between the stator coil and the magnetic force line changes, and the magnetic flux on the stator coil will also change, so the counter electromotive force will be induced. To overcome the counter electromotive force, the starting current is several times the rated current, wasting a lot of electric energy. , also affects device performance and operation

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