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Brushless permanent magnet motor

A technology of permanent magnet brushless motors and permanent magnets, which is applied in the direction of magnetic circuits, electric components, electrical components, etc., and can solve the problems of complex circuit structure, high cost, and restrictions on the application of brushless motors

Pending Publication Date: 2018-12-21
上海优未科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, this control method has disadvantages such as complex control process, slow response speed, complex circuit structure, and high cost, which limits the further application of brushless motors.

Method used

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  • Brushless permanent magnet motor
  • Brushless permanent magnet motor
  • Brushless permanent magnet motor

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Embodiment Construction

[0016] Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals designate the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary and are intended to explain the present invention and should not be construed as limiting the present invention.

[0017] refer to figure 1 , figure 2 , respectively showing the three-dimensional exploded view and the permanent magnet rotor structure diagram of the best embodiment of the brushless motor of the present invention, the brushless motor is mainly composed of a fuselage shell 1, a permanent magnet rotor 2, a coil winding stator 3, a cover CD 4, photoelectric switch 5 and bearing 6 are formed.

[0018] refer to image 3 , Figure 4 The schematic diagram of photoelectric switch structure and the schematic diagram of driving sequ...

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Abstract

The invention relates to a permanent magnet brushless motor, belonging to the motor technical field, in order to solve the technical problems that the existing brushless motor control mode is tedious,the control system is complex and the cost is high. The brushless motor comprises a body shell, a bearing, a permanent magnet rotor, a coil winding stator, an optical switch and a light shielding plate. The coil winding stator is symmetrical and uniformly distributed around the permanent magnet rotor, and each pair of coil winding stator is serially connected with a main power supply loop throughan optical-electric switch; The light-shielding disk is connected with the permanent magnet rotor, and the light-shielding disk is provided with a light-passing groove which has certain angular relationship with the magnetic pole area of the permanent magnet rotor. Through the technical proposal, a simple photoelectric switch is directly used, and the physical state of the rotor is taken as a control source to replace the complicated sensor and control system circuit in the existing brushless motor, so that the structure of the brushless motor is simpler, the reliability is higher, and the cost is lower.

Description

technical field [0001] The invention relates to the technical field of motors, in particular to a permanent magnet brushless motor. Background technique [0002] The permanent magnet brushless motor is mainly composed of a rotor made of permanent magnets, a stator made of multiple pairs of coil windings, and an induction control circuit. The induction control circuit replaces the brush and commutator structure of the traditional brushed motor. Longer, less noisy and more efficient. [0003] The induction control circuit in the prior art is generally composed of two parts: a sensing element and a control circuit. The sensing element generally uses a Hall element, a photosensitive element or an electromagnetic element as a sensor to sense the physical state of the rotor, and then the control circuit detects the physical state of the rotor. The position information of the rotor can be used to control the energization of the corresponding stator coil windings, thereby driving t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02K29/10H02K1/27
CPCH02K29/10H02K1/278
Inventor 黄中汶
Owner 上海优未科技有限公司
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