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Stator for DC motor

A DC motor and stator technology, which is applied in the manufacture of stator/rotor body, magnetic circuit shape/style/structure, magnetic circuit static parts, etc., can solve the problems of increasing harmful additional dynamic loads, decreasing motor efficiency, and uneven rotation speed. , to enhance and change the magnetic density distribution of the magnetic field, reduce the additional resistance load, and overcome the effect of the low torque area

Inactive Publication Date: 2009-01-07
ZHEJIANG QIANGYU ECONOMY & TRADE
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  • Summary
  • Abstract
  • Description
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AI Technical Summary

Problems solved by technology

The above situation will inevitably lead to unsmooth speed. When the load is applied, the running vibration of the motor will inevitably occur. This will increase the harmful additional dynamic load and do more useless work, thus leading to a decrease in the efficiency of the motor.
This is also the problem of low efficiency, high power consumption, and short range of electric vehicles currently using DC motors as power devices.

Method used

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  • Stator for DC motor

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Embodiment Construction

[0007] The present invention is mainly made of winding 8, stator iron core 7 with permanent magnet 5 and the like.

[0008] Excitation of above-mentioned structure, permanent magnet compound stator 6 and by rotor iron core 10, the coil 1 with current commutation piece 2, a pair of reversing carbon brushes 3, 3 ' placed on current commutation piece 2 and a pair of passing through Carbon brushes 4 and 4' form a complete set of rotor 9. When used in electric cars, the speed per hour can be increased from the original average of 30KM and the maximum of 40KM to the current average of 70KM and the maximum of 100KM, and the continuation mileage has been increased from the original 60KM to the current 20KM.

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Abstract

A stator used for dc motors belongs to the producing technology field of motors, and mainly consists of a winding (8) and a stator core (7) with a permanent magnet (5), and the like, and the permanent magnetic field direction of a permanent magnet (15) is vertical to the excitation magnetic field direction of a stator core (17). Excitation and permanent magnetic composite stators then formed causes the structure design of the dc motor stator to be more reasonable and scientific, and after the dc motor is formed by the stator and a rotor, the changes of the lead-angle of current are caused to be matched with and adapted to the magnetic field of the excitation and permanent magnetic composite stator so as to effectively intensify and change the distribution of magnetic field and density, overcome a low torque area, change the output characteristics of motors, and effectively reduce additional resistance load. The power saving effect is obvious.

Description

technical field [0001] The invention relates to a stator for a DC motor, which belongs to the technical field of motor manufacturing. Background technique [0002] There are small and medium power DC motors widely used in electric vehicles, light industrial products, and household appliances, or carbon brush commutation motors with parallel excitation, series excitation or complex excitation. In this way, the torque generated by the rotor coil at different angular positions in the magnetic field is different and alternates. Taking a single-turn rectangular planar coil as an example, when the coil plane is perpendicular to the magnetic field, the coil will not generate a rotational moment, and the coil will rotate by inertia. The above situation will inevitably lead to unsmooth speed. When the load is applied, the running vibration of the motor will inevitably occur. This will increase the harmful additional dynamic load and do more useless work, thus resulting in a decrease...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02K1/17H02K15/03
Inventor 王建强唐明辉高新福张歧良宣汉强王炼强
Owner ZHEJIANG QIANGYU ECONOMY & TRADE
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