CN206472013U - A kind of salient pole wound rotor brushless double feed alternating current generator - Google Patents
A kind of salient pole wound rotor brushless double feed alternating current generator Download PDFInfo
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- CN206472013U CN206472013U CN201621480729.4U CN201621480729U CN206472013U CN 206472013 U CN206472013 U CN 206472013U CN 201621480729 U CN201621480729 U CN 201621480729U CN 206472013 U CN206472013 U CN 206472013U
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Abstract
The utility model discloses salient pole wound rotor brushless double feed alternating current generator, including stator, rotor, rotating shaft and controller, main winding and controling winding are placed in the core slots of stator, main winding is connected with AC power, and controling winding is connected by controller with AC power；Rotor is the rotor core with p+q salient pole, inverted trapezoidal groove, and rotor core is arranged in rotating shaft, and salient pole center is provided with the first semi-open slot of half opening；Main winding number of poles is 2p, and controling winding number of poles is 2q, and 2q >=2p+4；The both sides of the semi-open slot of salient pole first are provided with least one pair of semi-open slot by symmetry axis of salient pole center line, semi-open slot includes second, third semi-open slot, corresponding in first, second, third semi-open slot to placed the short-circuited coil of multiturn first, second, third.The utility model is improved the energy converting between mechanical efficiency of brushless dual-feed motor, is expanded speed adjustable range, reduce rotor loss by the ingenious combination of salient pole reluctance rotor and wound rotor.
Description
Technical field
The utility model is related to alternating current generator, more particularly to a kind of salient pole wound rotor brushless double feed alternating current generator.
Background technology
The winding of two sets of different numbers of poles is embedded in existing single motor brushless double feed alternating current generator, stator core, is used respectively
Rate of doing work winding and controling winding, rotor are brushless structure, the modulation by rotor to stator double winding current induced magnetic field
Effect, realizes energy converting between mechanical；Under motor running mode, can asynchronous operation and synchronous operation, and can pass through change control
Frequency, amplitude and the phase of winding current processed, realize that the doubly-fed adjustable speed below and above synchronous speed is run；In generator operation side
Under formula, then it can realize that variable speed constant frequency is run by the AC excitation of controling winding；Due to the current transformer work(required for controling winding
Rate is smaller and control system cost is relatively low, and brushless double feed kind motor is in big-and-middle-sized Speed Adjustment of AC Motor and variable speed constant frequency generator
Had a good application prospect in system.
Because the energy converting between mechanical of brushless dual-feed motor is for different number of poles stator power windings and control based on rotor
How therefore the modulating action in winding current magnetic field processed, optimize rotor structure and improve its magnetic field modulation ability come what is realized
The key technology designed as brushless dual-feed motor.Brushless double-fed machine rotor produces the modulation in magnetic field for stator winding current
Effect mainly has two ways, and a kind of is to produce modulation of the magnetic field to stator winding current magnetic field by rotor windings induced-current
Effect；Another is to limit path of the stator winding current magnetic field in rotor core by the magnetic structure of rotor core；By
This generates the different brushless double-fed motor rotor structure of two classes, and a class is the rotor winding structure based on circuit design, another
Class is the reluctance rotor structure based on magnetic Circuit Design.
The rotor windings of brushless dual-feed motor have diversified forms, and such as individual layer concentric type cage modle short-circuited winding also can be using spy
The multilayer multicircuit winding very designed；Brushless dual-feed motor reluctance rotor typically has three kinds of structures, and one is on laminated rotor core
The salient pole reluctance rotor of fluting；Two be the non-salient pole reluctance rotor using axial lamination；Three be the non-salient pole reluctance rotor of radial direction lamination；
Wound rotor and reluctance rotor brushless dual-feed motor cut both ways, the magnetomotive force pair that the former produces merely with rotor winding current
Modulating action in stator winding magnetic field, and the latter is then merely with modulating action of the rotor magnetic resistance for stator field, the two
Rotor mmf and the common modulating action for stator field of magnetic conductance are not all comprehensively utilized.
Utility model is entitled " composite-rotor brushless double-fed motor ", number of patent application：201110028898 practicality is new
Type patent discloses the cage type rotor structure that inverted trapezoidal groove is opened in rotor core and copper sliver is set between groove；Prototype experiment
As a result show, although this composite rotors structure fully utilizes rotor mmf and magnetic conductance and make for the modulation of stator field
With, but its effect and performance are unsatisfactory.
Subject matter has at 3 points：
1. due to employing the magnetism-isolating loop of non-magnet material between rotor core and rotating shaft, the technique for adding rotor is answered
Polygamy and manufacturing cost；
2. speed adjustable range is not wide enough, it is difficult to realize higher rotation speed (>=1000r/min) doubly-fed adjustable speed；
3. it is placed on due to solid sliver in narrow and deep rotor slot, the kelvin effect of sliver electric current causes rotor loss to increase
With electric efficiency reduction.
Utility model content
The technical problems to be solved in the utility model is to provide a kind of being combined with wound rotor by field spider, increases
Strong its comprehensively utilizes the modulation capability of rotor mmf and magnetic resistance for stator field, at the same can keep its simple in construction again and into
This cheap salient pole wound rotor brushless double feed alternating current generator.
To reach above-mentioned purpose, the technical solution of the utility model is as follows：
A kind of salient pole wound rotor brushless double feed alternating current generator, including stator, rotor, rotating shaft and controller, the iron of stator
Two sets of independent three-phase symmetric windings, respectively main winding and controling winding, main winding outlet terminal A are placed in heart groove1、B1、
C1It is connected with the AC power with fixed frequency, controling winding outlet terminal A2、B2、C2Pass through controller and AC power
It is connected；The rotor be salient wound rotor without slip-ring brush structure, it includes the rotor core with p+q salient pole,
Rotor core is arranged in rotating shaft, is evenly equipped with p+q inverted trapezoidal groove in the outer rim of the rotor core, salient pole and inverted trapezoidal groove it
Between be arranged at intervals, salient pole center is provided with the first semi-open slot of half opening；The main winding number of poles is 2p, and controling winding number of poles is
2q, and 2q >=2p+4；
The both sides of the semi-open slot of salient pole first are provided with least one pair of semi-open slot by symmetry axis of salient pole center line, half-open
Mouth groove includes the second semi-open slot and the 3rd semi-open slot, corresponding in first, second, third semi-open slot of salient pole to put
The short-circuited coil of multiturn first, second, third is put, two coil sides of multiturn short-circuited coil are individually positioned in in inverted trapezoidal groove
Heart line is in the semi-open slot on the Adjacent salient poles of symmetry axis.
In one embodiment of the present utility model, the rotor core is overrided to form by magnetic conduction electrical sheet.
In one embodiment of the present utility model, two sides of each salient pole are parallel, the outer of salient pole and inverted trapezoidal groove
Base is in arc-shaped, its center of arc and rotor core inner circle concentric.
In one embodiment of the present utility model, bottom and the rotor core internal diameter of first, second, third semi-open slot
Between leave a certain distance, the depth of first, second, third semi-open slot with its increase with salient pole distance between center line and
Reduce.
In one embodiment of the present utility model, first, second, third short-circuited coil is separate, does not have on circuit
It is related；Short-circuited coil in the semi-open slot of salient pole first uses double-decker, and a coil side is placed on the first half opening
The upper strata of groove, another coil side is successively placed on short in the lower floor of the semi-open slot of Adjacent salient poles first, first, second semi-open slot
Map, which is used, only places a short-circuited coil side in single layer structure, each semi-open slot.
By above-mentioned technical proposal, the beneficial effects of the utility model are：
1st, by the ingenious combination of salient pole reluctance rotor and wound rotor, fully utilize rotor mmf and magnetic resistance for
The modulation capability of stator field, improves the energy converting between mechanical efficiency of brushless dual-feed motor.
2nd, by Stator and Rotor Windings number of poles and the ingenious cooperation of structure and optimization design, the speed governing of no double feedback electric engine is expanded
Scope, realizes higher rotation speed (>=1500r/min) doubly-fed adjustable speed.
3rd, by using multiturn short-circuited coil, the added losses of deep bar rotor winding current kelvin effect generation are reduced,
Improve the utilization rate and electric efficiency of rotor windings.
Brief description of the drawings
, below will be to embodiment in order to illustrate more clearly of the utility model embodiment or technical scheme of the prior art
Or the accompanying drawing used required in description of the prior art is briefly described, it should be apparent that, drawings in the following description are only
It is some embodiments of the present utility model, for those of ordinary skill in the art, is not paying the premise of creative work
Under, other accompanying drawings can also be obtained according to these accompanying drawings.
Fig. 1 is the structural representation of the utility model salient pole wound rotor brushless double feed alternating current generator；
Fig. 2 is the utility model salient pole wound rotor brushless double feed Stator Windings of AC Motor schematic diagram；
Fig. 3 is that a kind of the utility model rotor core of salient pole wound rotor brushless double feed alternating current generator is illustrated with winding construction
Figure；
Fig. 4 is that another rotor core of the utility model salient pole wound rotor brushless double feed alternating current generator is shown with winding construction
It is intended to；
Numeral and the corresponding component title represented by letter in figure：
10th, stator 11, main winding 12, controling winding 20, rotor 21, rotor core 22, salient pole 22a, the first half
Open slot 22b, the second semi-open slot 22c, the 3rd semi-open slot 23, inverted trapezoidal groove 24, the first short-circuited coil 25, second
Short-circuited coil 26, the 3rd short-circuited coil 30, rotating shaft 40, controller 50, AC power.
Embodiment
In order that technological means, creation characteristic, reached purpose and effect that the utility model is realized are easy to understand, under
Face combines and is specifically illustrating, and the utility model is expanded on further.
Referring to shown in Fig. 1 to Fig. 3, the utility model discloses a kind of salient pole wound rotor brushless double feed alternating current generator, bag
Include placed in stator 10, rotor 20, rotating shaft 30 and controller 40, the core slots of stator 10 two sets of independent three-phase symmetricals around
Group, respectively main winding 11 and controling winding 12, the outlet terminal A of main winding 111、B1、C1With the AC power with fixed frequency
50 are connected, the outlet terminal A of controling winding 122、B2、C2It is connected by controller 40 with AC power 50；Rotor 20 is salient pole
Formula wound rotor is without slip-ring brush structure, and it includes the rotor core 21 with p+q salient pole 22, and rotor core 21 is by with good
The electrical sheet of good magnetic property is overrided to form, and rotor core 21 is fixedly mounted in rotating shaft 30, in the outer rim of rotor core 21
P+q inverted trapezoidal groove 23 is evenly equipped with, is arranged at intervals between salient pole 22 and inverted trapezoidal groove 23, the center of salient pole 22 is provided with the of half opening
One semi-open slot 22a, two sides of each salient pole 22 are parallel, and the outer and the base of inverted trapezoidal groove 23 of salient pole 22 are in arc-shaped, its
Center of arc and the inner circle concentric of rotor core 21.
The number of poles of the utility model main winding 11 is 2p, and the number of poles of controling winding 12 is 2q, main winding 11 and controling winding 12
Number of poles is unequal, and need to meet following relations：2q≥2p+4；In order to realize that the doubly-fed adjustable speed of supersynchronous wide scope is run, need
Will from few number of poles 2p poles as the main winding of brushless double-fed machine stator, and the 2q poles of multi-pole are as controling winding,
, can be using the 2q poles of multi-pole as main winding when doubly-fed adjustable speed range of operation is smaller, and the 2p poles of few number of poles are used as control
Winding；By taking 2p=2 and 2q=6 as an example, as speed adjustable range >=1000r/min, it is necessary to from main winding be 2 poles, and control around
Group is 6 poles；If speed adjustable range≤900r/min, can using 6 poles, 2 poles are used as controling winding as main winding；In order to
Winding is avoided to produce circulation, main winding and controling winding use star-connection mode as far as possible, it is to avoid connect using multiple branch circuit angle-style
Line mode.
The first semi-open slot of the utility model salient pole 22a both sides are provided with least one by symmetry axis of the center line of salient pole 22
To semi-open slot, semi-open slot includes the effect slotted on the second semi-open slot 22b and the 3rd semi-open slot 22c, salient pole, is profit
It is oriented to the magnetic resistance of rotor magnetic circuit, magnetic flux is passed through rotor according to optimal path；The first, second, third of salient pole 22
It is corresponding in semi-open slot to placed multiturn the first short-circuited coil 24, the second short-circuited coil 25 and the 3rd short-circuited coil 26,
Two coil sides of multiturn short-circuited coil are individually positioned in half-open on using inverted trapezoidal groove center line as the Adjacent salient poles of symmetry axis
In mouth groove.
Left between the bottom of the semi-open slot of the utility model first, second, third and the internal diameter of rotor core 21 certain
Distance, to meet the requirement of rotor core strength and rigidity；The depth of first, second, third semi-open slot is with itself and salient pole
The increase of 22 distances between center line and reduce, with meet groove for rotor flux guiding requirement.
The short-circuited coil of the utility model first, second, third is separate, is not in contact with circuit；Positioned at salient pole
Short-circuited coil in one semi-open slot 22a uses double-decker, and a coil side is placed on the upper strata of the first semi-open slot, another line
The short-circuited coil that circle side is successively placed in the first semi-open slot of Adjacent salient poles 22a lower floor, first, second semi-open slot uses single
A short-circuited coil side is only placed in Rotating fields, each semi-open slot；Multiturn short-circuited coil is placed in above-mentioned semi-open slot
Effect, is the magnetic field for utilizing the magnetomotive force modulation stator winding current that induced-current is produced in rotor short-circuit coil to produce.
The utility model salient pole wound rotor is not limited to structure type shown in Fig. 3, and Fig. 4 turns for the coiling of the utility model salient pole
Another structure type of son；From unlike structure shown in Fig. 3, rotor structure shown in Fig. 4, only positioned at the center line of salient pole 22
The first short-circuited coil 24 is placed in upper first semi-open slot 22a, and without placement short-circuit line in second, third semi-open slot
Circle, is particularly suitable for use in that number of poles is more and the extremely wide less rotor of size, can simplify rotor manufacture process.
General principle of the present utility model and principal character and advantage of the present utility model has been shown and described above.One's own profession
The technical staff of industry is it should be appreciated that the utility model is not restricted to the described embodiments, described in above-described embodiment and specification
Simply illustrate principle of the present utility model, on the premise of the utility model spirit and scope are not departed from, the utility model is also
Various changes and modifications are had, these changes and improvements are both fallen within the range of claimed the utility model.The utility model
Claimed scope is by appended claims and its equivalent thereof.
Claims (5)
1. a kind of salient pole wound rotor brushless double feed alternating current generator, including stator, rotor, rotating shaft and controller, the iron core of stator
Two sets of independent three-phase symmetric windings, respectively main winding and controling winding, main winding outlet terminal A are placed in groove1、B1、C1
It is connected with the AC power with fixed frequency, controling winding outlet terminal A2、B2、C2Pass through controller and AC power phase
Connection；The rotor be salient wound rotor without slip-ring brush structure, it includes the rotor core with p+q salient pole, turn
It is sub unshakable in one's determination in rotating shaft, p+q inverted trapezoidal groove is evenly equipped with the outer rim of the rotor core, between salient pole and inverted trapezoidal groove
It is arranged at intervals, salient pole center is provided with the first semi-open slot of half opening；Characterized in that, the main winding number of poles is 2p, control
Winding number of poles is 2q, and 2q >=2p+4；
The both sides of the semi-open slot of salient pole first are provided with least one pair of semi-open slot by symmetry axis of salient pole center line, described half-open
Mouth groove includes the second semi-open slot and the 3rd semi-open slot, corresponding in first, second, third semi-open slot of salient pole to put
The short-circuited coil of multiturn first, second, third is put, two coil sides of multiturn short-circuited coil are individually positioned in in inverted trapezoidal groove
Heart line is in the semi-open slot on the Adjacent salient poles of symmetry axis.
2. a kind of salient pole wound rotor brushless double feed alternating current generator according to claim 1, it is characterised in that the rotor
Iron core is overrided to form by magnetic conduction electrical sheet.
3. a kind of salient pole wound rotor brushless double feed alternating current generator according to claim 1, it is characterised in that each salient pole
Two sides it is parallel, the outer and inverted trapezoidal bottom land side of salient pole are in arc-shaped, its center of arc and rotor core inner circle concentric.
4. a kind of salient pole wound rotor brushless double feed alternating current generator according to claim 1, it is characterised in that first,
2nd, a certain distance, first, second, third half opening are left between the bottom of the 3rd semi-open slot and rotor core internal diameter
The depth of groove reduces with its increase with salient pole distance between center line.
5. a kind of salient pole wound rotor brushless double feed alternating current generator according to claim 1, it is characterised in that first,
2nd, the 3rd short-circuited coil is separate, is not in contact with circuit；Short-circuited coil in the semi-open slot of salient pole first is used
Double-decker a, coil side is placed on the upper strata of the first semi-open slot, and it is half-open that another coil side is successively placed on Adjacent salient poles first
Short-circuited coil in the lower floor of mouth groove, first, second semi-open slot, which is used in single layer structure, each semi-open slot, only places one
Short-circuited coil side.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621480729.4U CN206472013U (en) | 2016-12-30 | 2016-12-30 | A kind of salient pole wound rotor brushless double feed alternating current generator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621480729.4U CN206472013U (en) | 2016-12-30 | 2016-12-30 | A kind of salient pole wound rotor brushless double feed alternating current generator |
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| Publication Number | Publication Date |
|---|---|
| CN206472013U true CN206472013U (en) | 2017-09-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621480729.4U Active CN206472013U (en) | 2016-12-30 | 2016-12-30 | A kind of salient pole wound rotor brushless double feed alternating current generator |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106787579A (en) * | 2016-12-30 | 2017-05-31 | 上海同慈特种电机技术有限公司 | A kind of salient pole wound rotor brushless double feed alternating current generator |
| CN108494200A (en) * | 2018-05-21 | 2018-09-04 | 广东上水能源科技有限公司 | A kind of brushless dual-feed motor wound rotor and its manufacture craft |
-
2016
- 2016-12-30 CN CN201621480729.4U patent/CN206472013U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106787579A (en) * | 2016-12-30 | 2017-05-31 | 上海同慈特种电机技术有限公司 | A kind of salient pole wound rotor brushless double feed alternating current generator |
| CN108494200A (en) * | 2018-05-21 | 2018-09-04 | 广东上水能源科技有限公司 | A kind of brushless dual-feed motor wound rotor and its manufacture craft |
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