Novel direct-current motor

Abstract

The invention provides a novel direct-current motor mainly comprising stators and rotors. The stators comprise ring-shaped stators and a centre stator (19), wherein the ring-shaped stators are fixed on the inner wall of a motor shell (3) and comprise an N-pole ring-shaped stator (1) and an S-pole ring-shaped stator (2); the centre stator (19) comprises two cylindrical magnets and a centre stator central excitation winding (6) between the two magnets; the two magnets of the centre stator (19) correspond to the ring-shaped stators in position and have same polarity; two circular ring-shaped rotors (14) are arranged between the ring-shaped stators and the centre stator (19); rotor armature windings (8) are distributed on the rotors (14); the rotors (14) and the centre stator (19) are respectively fixed on a motor end cover (13) via a stator shaft disk (12) and a centre shaft (23); an output shaft (17) is arranged at one end of a rotor fixing disk (11). The motor has the advantages of simple structure and wide speed adjustable range.

Description

technical field [0001] The utility model provides a novel motor, in particular a stepless DC motor. Background technique [0002] In the traditional DC motor, the closed coils are arranged between the adjacent N poles and S poles. Under the action of DC, the coils rotate periodically, and the magnetic flux passing through the coils changes periodically, generating back electromotive force. As the speed of the motor increases, the counter electromotive force also increases accordingly, and the current in the coil gradually decreases. When the speed of the motor is stable, the current passing through the coil is also constant. This traditional DC motor has the following disadvantages: 1. The actual efficiency of the motor is relatively low, generally between 70% and 80%; Frequent replacement, sometimes the load is too large, the effect of motor commutation is difficult, and it is easy to generate sparks; 3. The motor has many coils, the structure is complex, the manufacturing...

AI Technical Summary

Problems solved by technology

This traditional DC motor has the following disadvantages: 1. The actual efficiency of the motor is relatively low, generally between 70% and 80%; Frequent replacement, sometimes the load is too large, the effect of motor commutation is difficult, and it is easy to generate sparks; 3. The motor has many coils, the structure is complex, the manufacturing process requirements are also high, and the price of the motor is high; 4. The motor rotates periodically, resulting in Certain frequency, big vibration and big noise

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