CN2831596Y - Disk-type brushless double-feedback a.c.dynamo - Google Patents
Disk-type brushless double-feedback a.c.dynamo Download PDFInfo
- Publication number
- CN2831596Y CN2831596Y CN 200520092551 CN200520092551U CN2831596Y CN 2831596 Y CN2831596 Y CN 2831596Y CN 200520092551 CN200520092551 CN 200520092551 CN 200520092551 U CN200520092551 U CN 200520092551U CN 2831596 Y CN2831596 Y CN 2831596Y
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- end cap
- stator
- rotating shaft
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Abstract
A disk-type brushless double-feedback a. C. Dynamo includes two stators, a rotor, a bracket of the rotor, a rotating shaft, a bearing, end caps and a casing. A left end of the rotating shaft of a motor is orderly equipped with the bearing and the left end cap from inside to outside, and the left stator is fixed on the left end cap; a right end of the rotating shaft is orderly equipped with the bearing and the right end cap from inside to outside, and the right stator is fixed on the right end cap. Middle part of the rotating shaft is orderly equipped with the bracket of the rotor, the rotor and the casing along a vertical direction from inside to outside. Both sides of a ferrite core of the rotor are grooved, which is for inserting and placing two three-phase symmetrical rotor windings with number of poles of 2p and 2q separately, and then the rotor windings are connected in opposite sequence or same sequence to form a suite of rotor windings; but ferrite cores of two stators are both grooved on the single side, and separately inserted and placed with the independent three-phase symmetrical stator windings with the number of poles of 2p and 2q. The motor is not only provided with short axial length and simple structure, but also better coupling between the two windings; power density and force energy index of the motor are higher, which has not any restriction to the assemble of the number of poles of the two suite of stator windings.
Description
Technical field
The utility model belongs to a kind of motor, particularly a kind of disc type brushless double feed alternating current machine.This motor is a kind of general-purpose machine, is suitable for using as asynchronous machine, synchronous machine and double-fed frequency control motor.Can under brushless reliable situation, realize all functions of wire-wound asynchronous motor, electric excitation synchronous motor, when using, can realize carrying out frequency control with the more powerful motor of frequency converter driving of smaller power as the double-fed frequency control motor.
Background technology
Existing brushless double feed alternating current machine mainly contains two kinds of structural shapes.A kind of have the tandem brushless double feed alternating current machine that the wound type induction motor of conventional inside and outside rotor is formed by 2 different numbers of poles, and coaxial on the rotor mechanical of two motors, its rotor winding is with phase sequence or negative-phase sequence connection; Another kind is the magnetic field modulation formula brushless double feed alternating current machine that grows up on above-mentioned tandem brushless double feed alternating current machine basis, embed the stator winding of the different numbers of poles of 2 covers in the shared stator core of this motor simultaneously, the coupling between the two cover stator winding is to realize by special concentric type cage-type rotor or reluctance rotor.The common advantage of above-mentioned two kinds of motors, the one, brushless reliable on the structure, the 2nd, can drive more powerful buncher with the frequency converter of smaller power.
Yet, because the existence of end winding, axial length is long to be the major defect of tandem brushless double feed alternating current machine, limited its applying in some occasion, and mechanical structure relative complex, but the coupling between its two covers rotor winding is better, and the power density and the energy index of motor are higher, to the number of poles combination of two motors without any restriction; And the structure of magnetic field modulation formula brushless double feed alternating current machine is simple relatively, axial length and conventional alternating current machine are similar, but the coupling between the two cover windings is relatively poor, harmonic field in the motor is abundant, supplementary load loss are bigger, therefore the power density and the energy index of motor are lower, and require the number of poles difference of two cover stator winding must be more than or equal to 4, so the number of poles of motor combination and be restricted with leg speed.
The utility model content
At the deficiencies in the prior art, the utility model provides a kind of disc type brushless double feed alternating current machine with two stators, single rotor.This kind motor has the function of existing brushless double feed alternating current machine and advantage concurrently, not only axial length is short, simple in structure, and two the coupling of cover between the winding better, the power density and the energy index of motor are higher, to the numbers of poles combination of two cover stator winding without any restriction.
The motor that the utility model provides comprises two stators, rotor, rotor field spider, rotating shaft, bearing, end cap, casing.Wherein the machine shaft left end is equipped with bearing and left end cap from inside to outside successively, left side stator is fixed on the left end cap, the rotating shaft right-hand member is equipped with bearing and right end cap from inside to outside successively, right stator is fixed on the right end cap, and the rotating shaft middle part vertically is equipped with rotor field spider, rotor and casing from inside to outside successively.Left end cap, left stator, casing, right end cap, right stator and connector are formed the stator system structure jointly; The rotor rotary system is formed in rotor and corresponding rotor field spider and rotating shaft jointly.Rotor core double surface grooving wherein is respectively the two cover three-phase symmetric rotor windings of 2p and 2q to embed number of poles, and then negative-phase sequence or connect with phase sequence and to form a cover rotor winding; And two equal one-side gainings of stator core, and embed the independence three symmetrical stator winding that number of poles is respectively 2p and 2q respectively.The tandem that whole motor is equivalent to 2p and the 2q utmost point motor during operation connects, and when two cover rotor winding negative-phase sequences linked to each other, the equivalent number of poles of motor be (2p+2q), and when two cover rotor windings were continuous with phase sequence, the equivalent number of poles of motor was (2p-2q).When moving, can be respectively 2p and 2q utmost point stator winding feed with three-phase main-frequency alternating current and variable frequency power supply as frequency control motor.When moving as induction machine, 2p utmost point stator winding is directly by the common frequency power network feed, the stator winding short circuit of the 2q utmost point.When moving as synchronous machine, 2p utmost point stator winding is still by the common frequency power network feed, and the stator winding of the 2q utmost point is by DC power supply.
The special stator and rotor sructure of disc type brushless double feed alternating current machine, obtained beyond thought special-effect, be mainly reflected in: brushless reliable on (1) structure, (2) have all advantages and the function of wire-wound asynchronous motor and electric excitation synchronous motor, (3) can realize asynchronous machine, multiple operational modes such as synchronous machine and double-fed frequency control motor, (4) since about two disc type unit motors have identical number of poles respectively, coupling ability between its rotor winding improves greatly, and the magnetic field harmonic wave can design very for a short time, so the power density of motor and operational efficiency are higher; Must limit more than or equal to 4 number of poles by (2p-2q), the number of poles combination is more flexible, can be designed to have its axial length of higher synchronous speed (6) and shorten greatly, and structural design implements easier.
Description of drawings
Fig. 1 is the utility model electric machine structure schematic diagram;
Fig. 2 is the utility model electric machine iron core end view;
Among the figure: 1 left end cap, 2 left stators, 3 rotors, 4 right stators, 5 bearings, 6 rotating shafts, 7 right end caps, 8 casings, 9 rotor field spiders.
Embodiment
Below in conjunction with accompanying drawing the utility model motor is described in further details.
As shown in Figure 1, the utility model motor comprises left end cap 1, left stator 2, rotor 3, right stator 4, bearing 5, rotating shaft 6, right end cap 7, casing 8, rotor field spider 9.Wherein machine shaft 6 left ends are equipped with bearing 5 and left end cap 1 from inside to outside successively, left side stator 2 is fixed on the left end cap 1, rotating shaft 6 right-hand members are equipped with bearing 5 and right end cap 7 from inside to outside successively, right stator 4 is fixed on the right end cap 7, and rotating shaft 6 middle parts vertically are equipped with rotor field spider 9, rotor 3 and casing 8 from inside to outside successively.Left end cap 1, left stator 2, casing 8, right end cap 7, right stator 4 and connector are formed the stator system structure jointly, rotor 3 and corresponding rotor field spider 9 and the rotating shaft 6 common rotor rotary systems of forming.
End face of iron core as shown in Figure 2, rotor core double surface grooving wherein is respectively the two cover three-phase symmetric rotor windings of 2p and 2q to embed number of poles, and then negative-phase sequence or connect with phase sequence and to form a cover rotor winding; And two equal one-side gainings of stator core, and embed the independence three symmetrical stator winding that number of poles is respectively 2p and 2q respectively.The tandem that whole motor is equivalent to 2p and the 2q utmost point motor during operation connects, and when two cover rotor winding negative-phase sequences linked to each other, the equivalent number of poles of motor be (2p+2q), and when two cover rotor windings were continuous with phase sequence, the equivalent number of poles of motor was (2p-2q).When moving, can be respectively 2p and 2q utmost point stator winding feed with three-phase main-frequency alternating current and variable frequency power supply as frequency control motor.When moving as induction machine, 2p utmost point stator winding is directly by the common frequency power network feed, the stator winding short circuit of the 2q utmost point.When moving as synchronous machine, 2p utmost point stator winding is still by the common frequency power network feed, and the stator winding of the 2q utmost point is by DC power supply.
Claims (3)
1, a kind of disc type brushless double feed alternating current machine, comprise two stators, rotor, rotor field spider, rotating shaft, bearing, end cap, casing, it is characterized in that, this machine shaft left end is equipped with bearing and left end cap from inside to outside successively, left side stator is fixed on the left end cap, the rotating shaft right-hand member is equipped with bearing and right end cap from inside to outside successively, and right stator is fixed on the right end cap, and the rotating shaft middle part vertically is equipped with rotor field spider, rotor and casing from inside to outside successively.
2, disc type brushless double feed alternating current machine as claimed in claim 1, the double surface grooving unshakable in one's determination that it is characterized in that described rotor, be respectively the two cover three-phase symmetric rotor windings of 2p and 2q to embed number of poles, and then negative-phase sequence or connect with phase sequence and to form a cover rotor winding.
3, disc type brushless double feed alternating current machine as claimed in claim 1 is characterized in that all one-side gainings unshakable in one's determination of described two stators, and embeds the independence three symmetrical stator winding that number of poles is respectively 2p and 2q respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520092551 CN2831596Y (en) | 2005-09-20 | 2005-09-20 | Disk-type brushless double-feedback a.c.dynamo |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520092551 CN2831596Y (en) | 2005-09-20 | 2005-09-20 | Disk-type brushless double-feedback a.c.dynamo |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2831596Y true CN2831596Y (en) | 2006-10-25 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520092551 Expired - Fee Related CN2831596Y (en) | 2005-09-20 | 2005-09-20 | Disk-type brushless double-feedback a.c.dynamo |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2831596Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103546006A (en) * | 2013-10-25 | 2014-01-29 | 金坛市微特电机有限公司 | Double-stator axial magnetic field permanent magnet brushless direct-current motor |
| CN105356706A (en) * | 2015-12-14 | 2016-02-24 | 重庆理工大学 | Low-rotation-speed disk-type doubly-fed generator and exciting current applying method thereof |
| CN104300755B (en) * | 2014-09-11 | 2016-10-26 | 东南大学 | Double-deck wound-rotor type Dual-stator brushless double-fed motor |
-
2005
- 2005-09-20 CN CN 200520092551 patent/CN2831596Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103546006A (en) * | 2013-10-25 | 2014-01-29 | 金坛市微特电机有限公司 | Double-stator axial magnetic field permanent magnet brushless direct-current motor |
| CN104300755B (en) * | 2014-09-11 | 2016-10-26 | 东南大学 | Double-deck wound-rotor type Dual-stator brushless double-fed motor |
| CN105356706A (en) * | 2015-12-14 | 2016-02-24 | 重庆理工大学 | Low-rotation-speed disk-type doubly-fed generator and exciting current applying method thereof |
| CN105356706B (en) * | 2015-12-14 | 2017-09-15 | 重庆理工大学 | Slow-speed of revolution disc type double-fed generator and its exciting current applying method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20061025 Termination date: 20091020 |