CN104143894A - Brushless-rotor-self-excitation-type direct-current motor - Google Patents
Brushless-rotor-self-excitation-type direct-current motor Download PDFInfo
- Publication number
- CN104143894A CN104143894A CN201310183326.8A CN201310183326A CN104143894A CN 104143894 A CN104143894 A CN 104143894A CN 201310183326 A CN201310183326 A CN 201310183326A CN 104143894 A CN104143894 A CN 104143894A
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- Prior art keywords
- rotor
- stator
- magnetic
- self
- excitation
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- Permanent Magnet Type Synchronous Machine (AREA)
Abstract
The invention provides a brushless-rotor-self-excitation-type direct-current motor. Stator coil excitation is adopted, according to the electromagnetic induction right-hand screw rule, when direct currents pass through coils in a stator, coils on the stator produce an induction electromagnetic field, magnetism is uniformly induced through a stator magnetic yoke, a rotor magnetic yoke is symmetrically provided with small powerful permanent-magnet pieces, and a self-starting magnetic moment is produced. Due to the fact that a magnetic induction magnetic field in rotor coils is relatively opposite to the electromagnetic field in the stator, a rotor produces self-induced electromotive force for automatic circulating excitation. Due to the fact that the included angle of the magnetic force direction of the stator and the axis of the rotor is 45 degrees, tangential component force can be produced with most economical magnetic force according to the mechanics principle, tangential magnetic moment efficiency is maximized and accordingly the rotor of the motor can rotate.
Description
Technical field
The present invention relates to a kind of novel direct-current motor, belong to electrician's electric information, feature is that rotor coil installation is simple, and changing existing motor rotor coil magnetic field force induced is the magnetic field force induced rotor that makes of rotor core, and electrodeless conversion, brushless running.
Background technology
There is the shortcomings such as electrode conversion, excitation startup in direct current machine at present; Design this type brushless DC motor for this reason, adopt stator excitation, rotor self-excitation switches without rectification and electrode; Because being positioned at peritrochanteric, electromagnetic induction magnetic field is uniformly distributed, break through rotor and produce the even number symmetry requirement (can realize rotor coil is that odd number is uniformly distributed) while installation, and rotor coil is installed and is simplified, self-starting active force is strong, damage goes excitation to start link, make electric machine structure simpler and more direct, the assembling of suitable little (micro-) type power motor.
Summary of the invention
This is designed to brushless rotor self-excitation type DC motor, adopt stator coil excitation, according to electromagnetic induction right-hand screw rule principle, in the time that stator coil passes through direct current, on stator, coil produces induction field, by the even magnetic conduction of stator yoke, make symmetry in rotor yoke that one small pieces strong permanent magnetic sheet generation self-starting magnetic torque is installed.Because of magnetic induction magnetic field in rotor coil relative with magnetic field in stator reverse, thereby make rotor produce self induction electromotive force automatic cycle excitation.Because of stator magnet force direction and rotor axis angle at 45 °, from mechanics principle, can produce tangential component with most economical magnetic force again, make tangential magnetic torque maximizing efficiency, make rotor rotation.
Brief description of the drawings
Fig. 1 is (brushless rotor self-excitation type) DC motor magnetic circuit and structure chart; The magnetic field that rotor induced currents produces is contrary with stator field, and induced current transmits successively and forms self-excitation electromotive force.
Fig. 2 is (rotor self-excitation type) DC motor magnetic circuit loop and structure cutaway view.
Fig. 3 is electric electromechanics magnetic torque mechanics principle figure.
Fig. 4 is (brushless rotor self-excitation type) one-sided figure of DC motor outward appearance.
Embodiment
When assembling test, only the rotating shaft of shown design and stator yoke need be fixed on support to test simple possible.
Claims (3)
- Should (brushless rotor self-excitation type) DC motor require rotor portion field circuit conjugation, as accompanying drawing 2 (field circuit and structure cutaway view) and accompanying drawing 4 (schematic appearance).1. accompanying drawing 4 rotor field circuit conjugation circles are rotating part.
- 2. in accompanying drawing 2 and accompanying drawing 4, the startup permanent magnet pieces of mark is same position driving magnet, is positioned at (parallel with conjugation circle outer after embedding) on the conjugation circle of loop, rotor field.
- 3. conjugation circle in loop, rotor field is diagram mark in accompanying drawing 4, and structure is shown in that Fig. 2 is positioned at the axial core lamination stack that starts permanent magnet same position.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310183326.8A CN104143894A (en) | 2013-05-08 | 2013-05-08 | Brushless-rotor-self-excitation-type direct-current motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310183326.8A CN104143894A (en) | 2013-05-08 | 2013-05-08 | Brushless-rotor-self-excitation-type direct-current motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104143894A true CN104143894A (en) | 2014-11-12 |
Family
ID=51852998
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310183326.8A Pending CN104143894A (en) | 2013-05-08 | 2013-05-08 | Brushless-rotor-self-excitation-type direct-current motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104143894A (en) |
-
2013
- 2013-05-08 CN CN201310183326.8A patent/CN104143894A/en active Pending
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20141112 |