CN107317457A - A kind of permanent magnet coupling buncher - Google Patents
A kind of permanent magnet coupling buncher Download PDFInfo
- Publication number
- CN107317457A CN107317457A CN201710595753.5A CN201710595753A CN107317457A CN 107317457 A CN107317457 A CN 107317457A CN 201710595753 A CN201710595753 A CN 201710595753A CN 107317457 A CN107317457 A CN 107317457A
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- permanent magnet
- stator
- output shaft
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- 230000008878 coupling Effects 0.000 title claims abstract description 61
- 238000010168 coupling process Methods 0.000 title claims abstract description 61
- 238000005859 coupling reaction Methods 0.000 title claims abstract description 61
- 230000001105 regulatory effect Effects 0.000 claims abstract description 34
- 230000003993 interaction Effects 0.000 claims abstract description 18
- 238000004804 winding Methods 0.000 claims description 56
- 230000005611 electricity Effects 0.000 claims description 4
- 230000005284 excitation Effects 0.000 description 13
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 12
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 12
- 229910052799 carbon Inorganic materials 0.000 description 12
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 10
- 229910052802 copper Inorganic materials 0.000 description 10
- 239000010949 copper Substances 0.000 description 10
- 230000005540 biological transmission Effects 0.000 description 9
- 230000008859 change Effects 0.000 description 9
- 230000001360 synchronised effect Effects 0.000 description 7
- 239000004020 conductor Substances 0.000 description 6
- 229910052742 iron Inorganic materials 0.000 description 6
- 230000009286 beneficial effect Effects 0.000 description 5
- 230000033228 biological regulation Effects 0.000 description 5
- 230000004323 axial length Effects 0.000 description 4
- 238000009434 installation Methods 0.000 description 4
- 238000012423 maintenance Methods 0.000 description 4
- 230000009471 action Effects 0.000 description 3
- 239000000945 filler Substances 0.000 description 3
- 239000004519 grease Substances 0.000 description 3
- 230000001131 transforming effect Effects 0.000 description 3
- 241000555745 Sciuridae Species 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000005389 magnetism Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000001681 protective effect Effects 0.000 description 2
- 230000001276 controlling effect Effects 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K49/00—Dynamo-electric clutches; Dynamo-electric brakes
- H02K49/10—Dynamo-electric clutches; Dynamo-electric brakes of the permanent-magnet type
- H02K49/104—Magnetic couplings consisting of only two coaxial rotary elements, i.e. the driving element and the driven element
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/22—Rotating parts of the magnetic circuit
- H02K1/27—Rotor cores with permanent magnets
- H02K1/2706—Inner rotors
- H02K1/272—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K16/00—Machines with more than one rotor or stator
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K3/00—Details of windings
- H02K3/04—Windings characterised by the conductor shape, form or construction, e.g. with bar conductors
- H02K3/28—Layout of windings or of connections between windings
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Permanent Magnet Type Synchronous Machine (AREA)
Abstract
The present invention relates to a kind of permanent magnet coupling buncher, wherein, permanent magnet coupling buncher includes：Shell (1), output shaft (2), control structure (3), electric structure, speed regulating structure；Wherein, electric structure includes electric rotor (5) and the stator (4) being arranged on outer casing inner wall, and speed regulating structure includes wound rotor (6) and p-m rotor (7)；The magnetic field of stator and the magnetic field interaction of electric rotor are to transmit torque, and the magnetic field of wound rotor and the magnetic field interaction of p-m rotor are to transmit torque；One of wound rotor and p-m rotor are fixedly connected with electric rotor, and another one is fixedly connected with output shaft；Control structure is electrically connected with wound rotor, and control structure adjusts the curtage of wound rotor.The permanent magnet coupling buncher being capable of Effec-tive Function, smooth speed control and speed adjustable range is big, characteristic is hard, axial dimension is short, with low voltage ride-through capability.
Description
Technical field
The present invention relates to machine field, in particular it relates to a kind of permanent magnet coupling buncher.
Background technology
Speed governing operation be it is generally acknowledged realize one of best mode of electrical machine energy-saving, the speed governing operation of motor mainly has following
Three kinds of modes：
1st, electromagnetic speed-adjusting
Electromagnetic speed-adjusting is made up of cage-shaped motor, electromagnetic slip clutches and DC excitation power (controller).Electromagnetism slip
Clutch is made up of armature, magnetic pole and Exciting Windings for Transverse Differential Protection, and armature couples with cage-shaped motor rotor coaxial and driven by cage-shaped motor,
Magnetic pole is connected by shaft coupling with load, and Exciting Windings for Transverse Differential Protection leads to direct current.When armature rotates with cage-shaped motor, due to armature and magnetic
Relative motion between pole, makes armature induction produce vortex, and this vortex produces torque with magnetic flux interaction, and rotor driven is along same
Direction rotates, but to be consistently lower than the rotating speed of armature, i.e. electromagnetic speed-adjusting be slip mode of speed regulation to the rotating speed of rotor, adjusts electromagnetism slip
The DC excitation electric current of clutch, it is possible to change the output torque and rotating speed of electromagnetic slip clutches.
But, electromagnetic speed-adjusting efficiency is low, and slip power loss is big, and axial length is larger, and space-consuming is larger, causes to install
Inconvenience.
2nd, cascade control
Cascade control is typically slip power converting means of being connected in the rotor loop of wire-wound asynchronous motor, by slip
Power back off had both reached the purpose of speed governing to power network, and higher efficiency is obtained again.Wherein, rotor loop electric current is whole by semiconductor
It is direct current to flow device rectification, then direct current is changed into industrial-frequency alternating current via inverter, then by energy feedback to AC network
In.By controlling the inverse envelope of inverter, then it can change the voltage of inverter direct-flow side, so as to reach the purpose of speed governing.
But, cascade control does not possess low voltage ride-through capability.That is, when Voltage Drop (voltage temporarily declines) occurs for power network
When, motor is maintains output torque constant, then the electric current increase of stator, causes rotor-side induced-current larger.Due to slip work(
The frequency converter of rate converting means is directly connected on rotor loop, and slip power converting means easily burns because electric current is excessive,
Electrical fault is caused to stop production.
3. frequency control
Frequency control is to change rotating excitation field by changing the frequency of supply of motor stator, so as to change rotating excitation field
Synchronous rotational speed carries out speed governing, and this mode is without additional slip loss.The key device of frequency conversion speed-adjusting system is frequency changer,
I.e. frequency converter, variable-frequency power sources is provided by it.Frequency converter can be divided into AC-DC-AC (AC-DC-exchange) frequency converter and friendship-friendship
The major class of (AC-AC) frequency converter two.Its feature includes not having added losses in efficiency high, speed regulation process；Have a wide range of application, can
For cage type asynchronous motor；Speed adjustable range is big, and characteristic is hard, and precision is high.But, the key device frequency inverter capacity of frequency control
Greatly, technical sophistication, cost is high, and installation environment requires high, and Maintenance and Repair are difficult.
Therefore, comprehensive motors various in the prior art speed governing operation mode, it is necessary to it is a kind of efficiently, small volume, with low
The inexpensive buncher of voltage ride through ability.
The content of the invention
It is an object of the invention to provide a kind of permanent magnet coupling buncher, the permanent magnet coupling buncher can be transported efficiently
Row, small volume, with low voltage ride-through capability and cost is low.
To achieve these goals, the present invention program one provides a kind of permanent magnet coupling buncher, and the permanent magnet coupling is adjusted
Speed motor includes：Shell, output shaft, control structure, electric structure, speed regulating structure；
Wherein, the electric structure includes electric rotor and the stator being arranged on the outer casing inner wall, the speed governing knot
Structure includes wound rotor and p-m rotor；
The magnetic field interaction of the magnetic field of the stator and the electric rotor is to transmit torque, the magnetic of the wound rotor
With the magnetic field interaction of the p-m rotor to transmit torque；
One of the wound rotor and the p-m rotor are fixedly connected with the electric rotor 5, another one and institute
Output shaft is stated to be fixedly connected；
The control structure is electrically connected with the wound rotor, the control structure adjust the wound rotor electric current or
Voltage.
Scheme two, the permanent magnet coupling buncher according to scheme one, wherein, the stator and control structure electricity
Connection, the stator can be fed back to by the control structure by the slip power of the speed regulating structure.
Scheme three, the permanent magnet coupling buncher according to scheme two, wherein, the stator include main winding and it is secondary around
Group, the main winding is electrically connected with external power source, and the auxiliary winding is electrically connected with the control structure, when turning for the output shaft
When speed is less than the rotating speed of the electric rotor, the slip power of the speed regulating structure is fed back to by the control structure described
The auxiliary winding of stator.
Scheme four, the permanent magnet coupling buncher according to scheme one, wherein, the control structure is electrically connected with power network
Connect, the slip power of the speed regulating structure is fed back to by power network by the control structure.
Scheme five, the permanent magnet coupling buncher according to scheme four, wherein, the stator includes main winding, described
Main winding is electrically connected with external power source, when the rotating speed of the output shaft is less than the rotating speed of the electric rotor, passes through the control
The slip power of the speed regulating structure is fed back to power network by structure processed.
Scheme six, the permanent magnet coupling buncher according to any one of scheme one to five, wherein, when the output shaft
Rotating speed be higher than the electric rotor rotating speed when, powered by control structure to the wound rotor, the wound rotor to
Power network absorbed power.
Scheme seven, the permanent magnet coupling buncher according to any one of scheme one to six, wherein, the wound rotor
It is fixedly connected with the electric rotor, the p-m rotor is fixedly connected with the output shaft.
Scheme eight, the permanent magnet coupling buncher according to scheme seven, wherein, the p-m rotor, the winding turn
Sub, the described radial direction of electric rotor and the stator along the output shaft is sequentially arranged.
Scheme nine, the permanent magnet coupling buncher according to any one of scheme one to six, wherein, the p-m rotor
It is fixedly connected with the electric rotor, the wound rotor is fixedly connected with the output shaft.
Scheme ten, the permanent magnet coupling buncher according to scheme nine, wherein, the wound rotor, the permanent magnetism turn
Sub, the described radial direction of electric rotor and the stator along the output shaft is sequentially arranged.
Scheme 11, the permanent magnet coupling buncher according to any one of scheme one to ten, wherein, the permanent magnetism coupling
Closing buncher also includes being installed in rotation on the carrier of the enclosure, and the carrier includes cylindrical body, the
End plate and the second end plate, the cylindrical body are coaxially disposed with the output shaft, and the first end plate is connected to the tubular
One end of the connection end of the close output shaft of main body, second end plate connection is in the remote described defeated of the cylindrical body
It is formed with the first axle journal stretched out, second end plate and is formed in one end of the connection end of shaft, the first end plate
There is the second axle journal stretched out, the first end that first axle journal is arranged on the shell by clutch shaft bearing is covered, described
Second axle journal is arranged on by second bearing on the second end cap of the shell.
Scheme 12, the permanent magnet coupling buncher according to scheme 11, wherein, the electric rotor is fixed on institute
The outer wall of cylindrical body is stated, the wound rotor and the p-m rotor are located at the inside of the carrier, and the winding
One of rotor and the p-m rotor are fixed on the inwall of the cylindrical body, and another one is fixed with the output shaft to be connected
Connect.
Scheme 13, the permanent magnet coupling buncher according to scheme 11 or 12, wherein, the wound rotor leads to
Cross collector ring, carbon brush and lead to electrically connect with the control structure, the collector ring is set on second axle journal.
Scheme 14, the permanent magnet coupling buncher according to scheme 11 or 12, wherein, the wound rotor leads to
Cross collector ring, carbon brush and lead to electrically connect with the control structure, institute is stretched out in one end opposite with connection end of the output shaft
The second end cap is stated, the collector ring is set in one end opposite with connection end of the output shaft.
Scheme 15, the permanent magnet coupling buncher according to scheme 14, wherein, the permanent magnet coupling buncher
Also include protection cap, the protection cap and second end cap be detachably connected, the output shaft it is opposite with connection end
One end is located in the protection cap.
Compared with prior art, the present invention has the advantages that：
1st, electric rotor of the invention high-speed cruising all the time, electric structure revolutional slip s is basically unchanged, so as to ensure that electronic
Whole slip powers are fed back to power network or electronic knot by structure Effec-tive Function, and permanent magnetic speed-adjusting structure is in addition to own loss all the time
Structure itself is recycled, therefore the present invention is more efficient；
2nd, speed adjustable range of the present invention is big, and characteristic is hard, smooth speed control, when especially loading low speed operation, can keep nominal torque
Operation；
3rd, the ON/OFF that the present invention passes through control structure simply controling winding rotor loop, you can realize clutch function,
And without mechanical action, without fretting wear；
4th, the present invention is by adjusting the faradic size in winding, the size of control transmission torque, realize speed governing and
Soft start；
5th, the present invention has overload protection function；
6th, the present invention has low voltage ride-through capability.When Voltage Drop occurs for power network, electric structure is its output of maintenance
Torque is constant, and stator current becomes big, and electric rotor side induces larger induced-current, but due to the time is shorter and electric structure in
Power conversion device need not be set, therefore electric structure itself can be born, and will not be burned out.The wound rotor of speed regulating structure is consolidated
It is scheduled on inside carrier and is rotated together with electric rotor, wound rotor is solely subjected to the torque of electric structure transmission, speed governing winding sense
The level of torque of slip and transmission of the electric current answered between p-m rotor and wound rotor is relevant, with line voltage or stator
Size of current is unrelated, thus grid voltage sags on speed regulating structure and control structure without influence；
7th, axial length of the present invention is short, and overall length is suitable with common motor, and space-consuming is few, for transforming old system
It is highly beneficial；
8th, only one of which axle stretch end of the present invention, four bearings are replaceable grease by two oil filler points, only need two to give up
Fat box is the degras for collecting four bearings.Slip ring and carbon brush are arranged on anti-drive end, are conducive to safeguarding and change；
9th, the present invention compares frequency control, especially high voltage converter, and cost is substantially reduced.
Other features and advantages of the present invention will be described in detail in subsequent embodiment part.
Brief description of the drawings
Accompanying drawing is, for providing a further understanding of the present invention, and to constitute a part for specification, with following tool
Body embodiment is used to explain the present invention together, but is not construed as limiting the invention.In the accompanying drawings：
Fig. 1 is the sectional view of the permanent magnet coupling buncher of the first embodiment of the present invention；
Fig. 2 is the sectional view of the permanent magnet coupling buncher of second embodiment of the present invention；
Fig. 3 is the sectional view of the permanent magnet coupling buncher of third embodiment of the present invention；
Fig. 4 is the sectional view of the permanent magnet coupling buncher of the 4th embodiment of the present invention；
Fig. 5 is the power profile of the permanent magnet coupling buncher of the present invention.
Description of reference numerals
1 the first end caps of shell 1a
The output shaft of the second end caps of 1b 2
The control structure of 2a connection ends 3
4 stator 4a main windings
The electric rotor of 4b auxiliary winding 5
The p-m rotor of 6 wound rotor 7
The cylindrical body of 8 carrier 81
The end plate of 82 first end plate 83 second
The axle journal of 84 first axle journal 85 second
The second bearing of 9 clutch shaft bearing 10
The carbon brush of 11 collector ring 12
The protection cap of 13 lead 14
15 external power sources
Embodiment
Technical scheme is clearly and completely described below in conjunction with accompanying drawing, it is clear that described implementation
Example is a part of embodiment of the invention, rather than whole embodiments.Based on the embodiment in the present invention, ordinary skill
The every other embodiment that personnel are obtained under the premise of creative work is not made, belongs to the scope of protection of the invention.
Embodiment one：
As shown in figure 1, embodiments of the invention one provide a kind of permanent magnet coupling buncher, permanent magnet coupling speed governing electricity
Machine includes：Shell 1, output shaft 2, control structure 3, electric structure, speed regulating structure；Wherein, electric structure is by electric rotor 5 and sets
The stator 4 put on the inwall of shell 1 is constituted, and speed regulating structure includes wound rotor 6 and p-m rotor 7；The magnetic field of stator 4 with it is electronic
The magnetic field interaction of rotor 5 is to transmit torque, and the magnetic field of wound rotor 6 is with the magnetic field interaction of p-m rotor 7 to transmit
Torque；Wound rotor 6 is fixedly connected with electric rotor 5, and p-m rotor 7 is fixedly connected with output shaft 2, and p-m rotor 7, winding turn
Son 6, the radial direction of electric rotor 5 and stator 4 along output shaft 2 are sequentially arranged；Stator 4 include the first unshakable in one's determination, main winding 4a and it is secondary around
Group 4b, main winding 4a be used for electrically connected with external power source 15, auxiliary winding 4b is electrically connected with control structure 3, control structure 3 adjust around
The curtage of group rotor 6, and the slip power of speed regulating structure is fed back to by control structure 3 auxiliary winding of stator 4
4b。
The main winding 4a and auxiliary winding 4b of stator 4 are arranged in same groove and same phase.
Electric rotor 5 can be cage rotor or p-m rotor or wound rotor, and the present embodiment preferably is cage rotor,
Electric rotor 5 includes the second unshakable in one's determination and squirrel cage conductor.
Wound rotor 6 includes third core and speed governing winding, and wound rotor 6 passes through collector ring 11, carbon brush 12 and lead 13
Electrically connected with control structure 3.
P-m rotor 7 includes four-limbed and permanent magnet, and permanent magnet can be arranged on four-limbed surface, or permanent magnet is embedding
In four-limbed.
As shown in figure 1, permanent magnet coupling buncher also includes being installed in rotation on the carrier 8 inside shell 1, carrying
Frame 8 includes cylindrical body 81, the end plate 83 of first end plate 82 and second, and cylindrical body 81 is coaxially disposed with output shaft 2, first end plate
82 are connected to the connection end 2a of the close output shaft 2 of cylindrical body 81 one end, and the second end plate 83 is connected to cylindrical body 81
The first axle journal 84 stretched out, the second end plate 83 are formed with one end of connection end 2a away from output shaft 2, first end plate 82
On be formed with the second axle journal 85 stretched out, the first axle journal 84 is arranged on the first end cap 1a of shell 1 by clutch shaft bearing 9
On, the second axle journal 85 is arranged on by second bearing 10 on second end cap 1b of shell 1.
Electric rotor 5 is fixed on the outer wall of cylindrical body 81, and wound rotor 6 and p-m rotor 7 are located at the interior of carrier 8
Portion, and wound rotor 6 is fixed on the inwall of cylindrical body 81, and p-m rotor 7 is fixedly connected with output shaft 2.Wound rotor 6 leads to
Cross collector ring 11, carbon brush 12 and lead 13 to electrically connect with control structure 3, collector ring 11 is set on the second axle journal 85, positioned at non-
Drive end, so as to facilitate the installation of collector ring 11 and the electrical connection of wound rotor 6 and collector ring 11, is conducive to safeguarding and more
Change.
The inside of output shaft 2 from carrier 8 is passed through, and through the respective hole of the first axle journal 84 and the second axle journal 85,
Carrier 8 can be rotated relative to output shaft 2, and wound rotor 6 and p-m rotor 7 are located at the inside of carrier 8 and positioned at holding
Between carrier 8 and output shaft 2.Electric rotor 5 and wound rotor 6 are arranged on carrier 8 so that electric rotor 5, which is rotated, to be driven
Wound rotor 6, so that the concomitant rotation of output shaft 2, to transmit torque.
The operation principle to the permanent magnet coupling buncher of embodiment one is illustrated below：
Main winding 4a of the external power source 15 by terminal box to stator 4 supplies alternating current I1, rotating excitation field is produced in stator 4,
And synchronous rotational speed is n0.The rotating excitation field of the conductor cutting stator 4 of electric rotor 5 and produce induced-current I2, and then electric rotor
The first induced field is produced in 5.The rotating excitation field of stator 4 interacts with the first induced field of electric rotor 5 to be turned with transmitting
Square T1With the first electromagnetic power Pe1, electric rotor 5 rotates with the rotating excitation field of stator 4, and rotating speed is n1, power output is Pe2。
The rotation of electric rotor 5 drives the synchronous rotary of wound rotor 6, and both rotating speeds are identical.Wound rotor 6 and p-m rotor 7
Between relatively rotate, the permanent magnetic field of speed governing winding in wound rotor 6 cutting p-m rotor 7 and produce induced-current
I3, and then the second induced field is produced in wound rotor 6.Second induced field of wound rotor 6 and the permanent-magnet magnetic of p-m rotor 7
Field interactions is to transmit torque T2With the second electromagnetic torque Pe2' so that p-m rotor 7 rotates, and its rotating speed is n2, power output
For P2。
Pass through the induced-current I of the controling winding rotor 6 of control structure 33Size come control output shaft 2 transmit torque it is big
It is small, to adapt to rotation speed requirements, realize speed-regulating function.
As the output speed n of output shaft 22Less than the rotating speed n of electric rotor 51When, the slip power P of speed regulating structuresPass through
Control structure 3 feeds back to the auxiliary winding 4b of stator 4, and the rotating excitation field produced by stator 4 and the first sense of electric rotor 5
Magnetic field interaction is answered to produce positive drag torque so that the active power that electric structure absorbs from power network is reduced, and realizes section
Energy.
As the output speed n of output shaft 22Higher than the rotating speed n of electric rotor 51When, give wound rotor 6 by control structure 3
Power supply, wound rotor 6 realizes raising speed to power network absorbed power.
Wherein, as shown in figure 5, the rotating speed of permanent magnet coupling buncher, torque and power, which meet following condition, (ignores machinery
Loss, stray loss and wound rotor iron loss)：
T1=T2=T
Pe2=Pe2'=kTn1
Pe1=kTn0, Pe2=kTn1, P2=kTn2,
Ps=Pe2-P2-Pcu3=kT (n1-n2)-Pcu3,
Wherein, k=1.0472, Pcu1For the copper loss of stator 4, PFe1For the iron loss of stator 4, Pcu2For the copper of electric rotor 5
Consumption, Pcu3For the copper loss of wound rotor 6, PsFor the slip power of speed regulating structure, m is the conductor number of phases of electric rotor 5, R2To be electronic
The internal resistance of rotor 5.
As Fig. 5 can be seen that in embodiment one, the power attenuation of stator 4 is only the internal resistance copper loss P of stator 4cu1And iron loss
PFe1, the power attenuation of electric rotor 5 is only the internal resistance copper loss of electric rotor 5, the rotating speed n of electric rotor 51Closely synchronized turn
Fast n0, the high-speed cruising all the time of electric rotor 5, the active power that the permanent magnet coupling buncher of embodiment one absorbs from power network is P1-
Ps。
Embodiment one adds a set of auxiliary winding 4b in the winding of stator 4, eliminates permanent magnetic speed-adjusting structure defeated to power network
The contravariant transformer of energy is sent, cost is reduced.The slip power of permanent magnet coupling speed governing feeds back to the auxiliary winding of stator 4, to electricity
Net is pollution-free.
The electric rotor 5 of embodiment one high-speed cruising all the time, the revolutional slip s of electric structure is basically unchanged, so as to ensure that
Electric structure Effec-tive Function, and permanent magnetic speed-adjusting structure is in addition to own loss, and whole slip powers are fed back into electric structure all the time
Itself is recycled, and without transformer loss, therefore embodiment one is more efficient.
The speed adjustable range of embodiment one is wide, smooth speed control, when especially loading low speed operation, nominal torque can be kept to run.
The ON/OFF that embodiment one passes through the control structure simply loop of controling winding rotor 6, you can realize clutch function,
And without mechanical action, without fretting wear.
Embodiment one is realized and adjusted by adjusting the faradic size in wound rotor 6, the size of control transmission torque
Speed and soft start.
Embodiment one has overload protection function.
Embodiment one has low voltage ride-through capability.Rms voltage reduces under the conditions of Voltage Drop refers to power-frequency voltage
To between 0.1-0.9 times of rated voltage, and the duration is the variation in voltage phenomenon of the short time in 0.5 cycle to 1 minute.
Low voltage ride-through capability refer to compact electrical generating systems it is determined that short time in can bear a threshold value electrical network low voltage and
Ability not out of service, i.e., can bear the ability of Voltage Drop.
When Voltage Drop occurs for power network, the electric structure of embodiment one is maintains its output torque constant, and the electric current of stator 4 becomes
Greatly, the side of electric rotor 5 induces larger induced-current, but due to the time is shorter and the electric structure of embodiment one in inactivity convert
Device, the electric structure itself of embodiment one can be born, and will not be burned out.The wound rotor 6 of the speed regulating structure of embodiment one is consolidated
Be scheduled on inside carrier 8, rotated together with electric rotor 5, wound rotor 6 be solely subjected to electric structure transmission torque, speed governing around
The level of torque of slip and transmission of the electric current of group sensing between p-m rotor 7 and wound rotor 6 is relevant, with line voltage
Or stator current size is unrelated, thus grid voltage sags on the speed regulating structure and control structure of embodiment one without influence.
The axial length of embodiment one is short, and overall length is suitable with common motor, highly beneficial for transforming old system.
The only one of which axle end of embodiment one, four bearings are replaceable grease by two oil filler points, only need two to give up
Fat box is the degras for collecting four bearings.Collector ring 11 and carbon brush 12 are arranged on anti-drive end, are conducive to safeguarding and change.
Embodiment one compares frequency control, especially high voltage converter, and cost is low.
Embodiment two：
As shown in Fig. 2 the permanent magnet coupling buncher that embodiments of the invention two are provided, the permanent magnet coupling buncher bag
Include：Shell 1, output shaft 2, control structure 3, electric structure, speed regulating structure；Wherein, electric structure is by electric rotor 5 and is arranged on
Stator 4 on the inwall of shell 1 is constituted, and speed regulating structure includes wound rotor 6 and p-m rotor 7；The magnetic field of stator 4 and electric rotor
5 magnetic field interaction is to transmit torque, and the magnetic field of wound rotor 6 is with the magnetic field interaction of p-m rotor 7 to transmit torque；
P-m rotor 7 is fixedly connected with electric rotor 5, and wound rotor 6 is fixedly connected with output shaft 2, wound rotor 6, p-m rotor 7,
The radial direction of electric rotor 5 and stator 4 along output shaft 2 is sequentially arranged；Stator 4 includes the first unshakable in one's determination, main winding 4a and auxiliary winding 4b,
Main winding 4a is used to electrically connect with external power source 15, and auxiliary winding 4b is electrically connected with control structure 3, and the regulation winding of control structure 3 turns
The curtage of son 6, and the slip power of speed regulating structure is fed back to by control structure 3 the auxiliary winding 4b of stator 4.
Embodiment two is identical with the principle of embodiment one, and difference is：
P-m rotor 7 is fixed on the inwall of cylindrical body 81, and is rotated with electric rotor 5, wound rotor 6 and output
Axle 2 is fixedly connected.Wound rotor 6 is electrically connected by collector ring 11, carbon brush 12 and lead 13 with control structure 3, output shaft 2 with
The second end cap 1b is stretched out in one end opposite connection end 2a, and collector ring 11 is set in one end opposite with connection end 2a of output shaft 2.
Collector ring 11 is placed in the outside of shell 1, is more beneficial for the maintenance and replacing of collector ring 11, or even in erecting bed
Carry out the dismounting of collector ring 11.
As shown in Fig. 2 permanent magnet coupling buncher also includes protection cap 14, the end cap 1b of protection cap 14 and second is removably
Connection, one end opposite with connection end 2a of output shaft 2 is located in protection cap 14.Protection cap 14 is pointed to the outside of shell 1
The grade element of collector ring 11 plays a protective role, and when needing that collector ring 11 is repaired and changed, can be by protection cap
14 pull down.
Embodiment three：
As shown in figure 3, the permanent magnet coupling buncher that embodiments of the invention three are provided, permanent magnet coupling buncher bag
Include：Shell 1, output shaft 2, control structure 3, electric structure, speed regulating structure；Wherein, electric structure is by electric rotor 5 and is arranged on
Stator 4 on the inwall of shell 1 is constituted, and speed regulating structure includes wound rotor 6 and p-m rotor 7；The magnetic field of stator 4 and electric rotor
5 magnetic field interaction is to transmit torque, and the magnetic field of wound rotor 6 is with the magnetic field interaction of p-m rotor 7 to transmit torque；
Wound rotor 6 is fixedly connected with electric rotor 5, and p-m rotor 7 is fixedly connected with output shaft 2, p-m rotor 7, wound rotor 6,
The radial direction of electric rotor 5 and stator 4 along output shaft 2 is sequentially arranged；Stator 4 includes the first unshakable in one's determination and main winding 4a, main winding 4a
Electrically connected with external power source 15, control structure 3 is electrically connected with wound rotor 6, control structure 3 regulation wound rotor 6 electric current or
Voltage, and the slip power of speed regulating structure is fed back to by power network by control structure 3.
Electric rotor 5 can be cage rotor or p-m rotor or wound rotor, and the present embodiment preferably is cage rotor,
Electric rotor 5 includes the second unshakable in one's determination and squirrel cage conductor.
Wound rotor 6 includes third core and speed governing winding, and wound rotor 6 passes through collector ring 11, carbon brush 12 and lead 13
Electrically connected with control structure 3.
P-m rotor 7 includes four-limbed and permanent magnet, and permanent magnet can be arranged on four-limbed surface, or permanent magnet is embedding
In four-limbed.
As shown in figure 3, permanent magnet coupling buncher also includes being installed in rotation on the carrier 8 inside shell 1, carrying
Frame 8 includes cylindrical body 81, the end plate 83 of first end plate 82 and second, and cylindrical body 81 is coaxially disposed with output shaft 2, first end plate
82 are connected to the connection end 2a of the close output shaft 2 of cylindrical body 81 one end, and the second end plate 83 is connected to cylindrical body 81
The first axle journal 84 stretched out, the second end plate 83 are formed with one end of connection end 2a away from output shaft 2, first end plate 82
On be formed with the second axle journal 85 stretched out, the first axle journal 84 is arranged on the first end cap 1a of shell 1 by clutch shaft bearing 9
On, the second axle journal 85 is arranged on by second bearing 10 on second end cap 1b of shell 1.
Electric rotor 5 is fixed on the outer wall of cylindrical body 81, and wound rotor 6 and p-m rotor 7 are located at the interior of carrier 8
Portion, and wound rotor 6 is fixed on the inwall of cylindrical body 81, and p-m rotor 7 is fixedly connected with output shaft 2.Wound rotor 6 leads to
Cross collector ring 11, carbon brush 12 and lead 13 to electrically connect with control structure 3, collector ring 11 is set on the second axle journal 85, positioned at non-
Drive end, so as to facilitate the installation of collector ring 11 and the electrical connection of wound rotor 6 and collector ring 11, is conducive to safeguarding and more
Change.
The inside of output shaft 2 from carrier 8 is passed through, and through the respective hole of the first axle journal 84 and the second axle journal 85,
Carrier 8 can be rotated relative to output shaft 2, and wound rotor 6 and p-m rotor 7 are located at the inside of carrier 8 and positioned at holding
Between carrier 8 and output shaft 2.Electric rotor 5 and wound rotor 6 are arranged on carrier 8 so that electric rotor 5, which is rotated, to be driven
Wound rotor 6, so that the concomitant rotation of output shaft 2, to transmit torque.
The operation principle to the permanent magnet coupling buncher of embodiment three is illustrated below：
Main winding 4a of the external power source 15 by terminal box to stator 4 supplies alternating current I1, rotating excitation field is produced in stator 4,
And synchronous rotational speed is n0.The rotating excitation field of the conductor cutting stator 4 of electric rotor 5 and produce induced-current I2, and then electric rotor
The first induced field is produced in 5.The rotating excitation field of stator 4 interacts with the first induced field of electric rotor 5 to be turned with transmitting
Square T1With the first electromagnetic power Pe1, electric rotor 5 rotates with the rotating excitation field of stator 4, and rotating speed is n1, power output is Pe2。
The rotation of electric rotor 5 drives the synchronous rotary of wound rotor 6, and both rotating speeds are identical.Wound rotor 6 and p-m rotor 7
Between relatively rotate, the permanent magnetic field of speed governing winding in wound rotor 6 cutting p-m rotor 7 and produce induced-current
I3, and then the second induced field is produced in wound rotor 6.Second induced field of wound rotor 6 and the permanent-magnet magnetic of p-m rotor 7
Field interactions is to transmit torque T2With the second electromagnetic torque Pe2' so that p-m rotor 7 rotates, and its rotating speed is n2, power output
For P2。
Pass through the induced-current I of the controling winding rotor 6 of control structure 33Size come control output shaft 2 transmit torque it is big
It is small, to adapt to rotation speed requirements, realize speed-regulating function.
As the output speed n of output shaft 22Less than the rotating speed n of electric rotor 51When, the slip power of speed regulating structure passes through control
Structure 3 processed feeds back to power network, realizes energy-conservation.
As the output speed n of output shaft 22Higher than the rotating speed n of electric rotor 51When, give wound rotor 6 by control structure 3
Power supply, wound rotor 6 realizes raising speed to power network absorbed power.
Wherein, as shown in figure 5, the rotating speed of permanent magnet coupling buncher, torque and power, which meet following condition, (ignores machinery
Loss, stray loss and wound rotor iron loss)：
T1=T2=T
Pe2=Pe2'=kTn1
Pe1=kTn0, Pe2=kTn1, P2=kTn2,
Ps=Pe2-P2-Pcu3=kT (n1-n2)-Pcu3,
Wherein, k=1.0472, Pcu1For the copper loss of stator 4, PFe1For the iron loss of stator 4, Pcu2For the copper of electric rotor 5
Consumption, Pcu3For the copper loss of wound rotor 6, PsFor the slip power of speed regulating structure, m is the conductor number of phases of electric rotor 5, R2To be electronic
The internal resistance of rotor 5.
As Fig. 5 can be seen that in embodiment three, the power attenuation of stator 4 is only the internal resistance copper loss P of stator 4cu1And iron loss
PFe1, the power attenuation of electric rotor 5 is only the internal resistance copper loss of electric rotor 5, the rotating speed n of electric rotor 51Closely synchronized turn
Fast n0, the high-speed cruising all the time of electric rotor 5, and by slip power PsFeed back to power network.
The electric rotor 5 of embodiment three high-speed cruising all the time, the revolutional slip s of electric structure is basically unchanged, so as to ensure that
Electric structure Effec-tive Function, and permanent magnetic speed-adjusting structure is in addition to own loss, whole slip powers is fed back into power network, therefore all the time
Embodiment three is more efficient.
The speed adjustable range of embodiment three is wide, smooth speed control, when especially loading low speed operation, nominal torque can be kept to run.
The ON/OFF that embodiment three passes through the control structure simply loop of controling winding rotor 6, you can realize clutch function,
And without mechanical action, without fretting wear.
The faradic size in wound rotor 6 is overregulated in embodiment threeway, and the size of control transmission torque is realized and adjusted
Speed and soft start.
Embodiment three has overload protection function.
Embodiment three has low voltage ride-through capability.Rms voltage reduces under the conditions of Voltage Drop refers to power-frequency voltage
To between 0.1-0.9 times of rated voltage, and the duration is the variation in voltage phenomenon of the short time in 0.5 cycle to 1 minute.
Low voltage ride-through capability refer to compact electrical generating systems it is determined that short time in can bear a threshold value electrical network low voltage and
Ability not out of service, i.e., can bear the ability of Voltage Drop.When Voltage Drop occurs for power network, the electronic knot of embodiment three
Structure is maintains its output torque constant, and the electric current of stator 4 becomes big, and the side of electric rotor 5 induces larger induced-current, but due to the time
Inactivity transformation device in the shorter and electric structure of embodiment three, the electric structure itself of embodiment three can be born, will not be by
Burn.The wound rotor 6 of the speed regulating structure of embodiment three is fixed on inside carrier 8, is rotated together with electric rotor 5, and winding turns
Son 6 is solely subjected to the torque of electric structure transmission, and the electric current of speed governing winding sensing is between p-m rotor 7 and wound rotor 6
Slip is relevant with the level of torque of transmission, unrelated with line voltage or stator current size, so grid voltage sags are to implementing
The speed regulating structure and control structure of example three are without influence.
The axial length of embodiment three is short, and overall length is suitable with common motor, highly beneficial for transforming old system.
The only one of which axle end of embodiment three, four bearings are replaceable grease by two oil filler points, only need two to give up
Fat box is the degras for collecting four bearings.Collector ring 11 and carbon brush 12 are arranged on anti-drive end, are conducive to safeguarding and change.
Embodiment three compares frequency control, especially high voltage converter, and cost is low.
Example IV：
As shown in figure 4, the permanent magnet coupling buncher that embodiments of the invention four are provided, the permanent magnet coupling buncher bag
Include：Shell 1, output shaft 2, control structure 3, electric structure, speed regulating structure；Wherein, electric structure is by electric rotor 5 and is arranged on
Stator 4 on the inwall of shell 1 is constituted, and speed regulating structure includes wound rotor 6 and p-m rotor 7；The magnetic field of stator 4 and electric rotor
5 magnetic field interaction is to transmit torque, and the magnetic field of wound rotor 6 is with the magnetic field interaction of p-m rotor 7 to transmit torque；
P-m rotor 7 is fixedly connected with electric rotor 5, and wound rotor 6 is fixedly connected with output shaft 2, wound rotor 6, p-m rotor 7,
The radial direction of electric rotor 5 and stator 4 along output shaft 2 is sequentially arranged；Stator 4 includes the first unshakable in one's determination and main winding 4a, main winding 4a
Electrically connected with external power source 15, control structure 3 is electrically connected with wound rotor 6, control structure 3 regulation wound rotor 6 electric current or
Voltage, and the slip power of speed regulating structure is fed back to by power network by control structure 3.
Example IV is identical with the principle of embodiment three, and difference is：
P-m rotor 7 is fixed on the inwall of cylindrical body 81, and is rotated with electric rotor 5, wound rotor 6 and output
Axle 2 is fixedly connected.Wound rotor 6 is electrically connected by collector ring 11, carbon brush 12 and lead 13 with control structure 3, output shaft 2 with
The second end cap 1b is stretched out in one end opposite connection end 2a, and collector ring 11 is set in one end opposite with connection end 2a of output shaft 2.
Collector ring 11 is placed in the outside of shell 1, is more beneficial for the maintenance and replacing of collector ring 11, or even in erecting bed
Carry out the dismounting of collector ring 11.
As shown in figure 4, permanent magnet coupling buncher also includes protection cap 14, the end cap 1b of protection cap 14 and second is removably
Connection, one end opposite with connection end 2a of output shaft 2 is located in protection cap 14.Protection cap 14 is pointed to the outside of shell 1
The grade element of collector ring 11 plays a protective role, and when needing that collector ring 11 is repaired and changed, can be by protection cap
14 pull down.
In the present invention, unless otherwise clearly defined and limited, term " installation ", " connected ", " connection ", " fixation " etc.
Term should be interpreted broadly, for example, it may be being fixedly connected or being detachably connected, or be integrally connected；It can be machine
Tool is connected or electrically connected；Can be joined directly together, can also be indirectly connected to by intermediary, can be two members
Connection inside part.For the ordinary skill in the art, above-mentioned term can be understood in this hair as the case may be
Concrete meaning in bright.The preferred embodiment of the present invention is described in detail above in association with accompanying drawing, still, the present invention is not limited to
Detail in above-mentioned embodiment, in the range of the technology design of the present invention, can be carried out to technical scheme
A variety of simple variants, these simple variants belong to protection scope of the present invention.
It is further to note that each particular technique feature described in above-mentioned embodiment, in not lance
In the case of shield, can be combined by any suitable means, in order to avoid unnecessary repetition, the present invention to it is various can
The combination of energy no longer separately illustrates.
In addition, various embodiments of the present invention can be combined randomly, as long as it is without prejudice to originally
The thought of invention, it should equally be considered as content disclosed in this invention.
Claims (10)
1. a kind of permanent magnet coupling buncher, it is characterised in that the permanent magnet coupling buncher includes：Shell (1), output shaft
(2), control structure (3), electric structure, speed regulating structure；
Wherein, the electric structure includes electric rotor (5) and the stator (4) being arranged on the shell (1) inwall, described to adjust
Fast structure includes wound rotor (6) and p-m rotor (7)；
The magnetic field of the stator (4) and the magnetic field interaction of the electric rotor (5) are to transmit torque, the wound rotor
(6) magnetic field is with the magnetic field interaction of the p-m rotor (7) to transmit torque；
One of the wound rotor (6) and the p-m rotor (7) are fixedly connected with the electric rotor (5), another one
It is fixedly connected with the output shaft (2)；
The control structure (3) electrically connects with the wound rotor (6), and the control structure (3) adjusts the wound rotor (6)
Curtage.
2. permanent magnet coupling buncher according to claim 1, it is characterised in that the stator (4) is tied with the control
Structure (3) is electrically connected, and the slip power of the speed regulating structure is fed back into the stator (4) by the control structure (3).
3. permanent magnet coupling buncher according to claim 2, it is characterised in that the stator (4) includes main winding
(4a) and auxiliary winding (4b), the main winding (4a) electrically connects with external power source (15), the auxiliary winding (4b) and the control
Structure (3) is electrically connected, and when the rotating speed of the output shaft (2) is less than the rotating speed of the electric rotor (5), is tied by the control
Structure (3) feeds back to the slip power of the speed regulating structure auxiliary winding (4b) of the stator (4).
4. permanent magnet coupling buncher according to claim 1, it is characterised in that the control structure (3) and power network electricity
Connection, power network is fed back to by the control structure (3) by the slip power of the speed regulating structure.
5. permanent magnet coupling buncher according to claim 4, it is characterised in that the stator (4) includes main winding
(4a), the main winding (4a) electrically connects with external power source (15), when the rotating speed of the output shaft (2) is less than the electric rotor
(5) during rotating speed, the slip power of the speed regulating structure is fed back to by power network by the control structure (3).
6. the permanent magnet coupling buncher according to any one of claim 1-5, it is characterised in that when the output shaft
(2) when rotating speed is higher than the rotating speed of the electric rotor (5), powered by control structure (3) to the wound rotor (6), institute
Wound rotor (6) is stated to power network absorbed power.
7. the permanent magnet coupling buncher according to any one of claim 1-6, it is characterised in that the wound rotor
(6) it is fixedly connected with the electric rotor (5), the p-m rotor (7) is fixedly connected with the output shaft (2).
8. permanent magnet coupling buncher according to claim 7, it is characterised in that the p-m rotor (7), the winding
The radial direction of rotor (6), the electric rotor (5) and the stator (4) along the output shaft (2) is sequentially arranged.
9. the permanent magnet coupling buncher according to any one of claim 1-6, it is characterised in that the p-m rotor
(7) it is fixedly connected with the electric rotor (5), the wound rotor (6) is fixedly connected with the output shaft (2).
10. permanent magnet coupling buncher according to claim 9, it is characterised in that the wound rotor (6), it is described forever
The radial direction of magnet rotor (7), the electric rotor (5) and the stator (4) along the output shaft (2) is sequentially arranged.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710595753.5A CN107317457B (en) | 2017-07-20 | 2017-07-20 | Permanent magnet coupling speed regulating motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710595753.5A CN107317457B (en) | 2017-07-20 | 2017-07-20 | Permanent magnet coupling speed regulating motor |
Publications (2)
| Publication Number | Publication Date |
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| CN107317457A true CN107317457A (en) | 2017-11-03 |
| CN107317457B CN107317457B (en) | 2024-03-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710595753.5A Active CN107317457B (en) | 2017-07-20 | 2017-07-20 | Permanent magnet coupling speed regulating motor |
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| Country | Link |
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| CN (1) | CN107317457B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111536060A (en) * | 2020-01-10 | 2020-08-14 | 爱景节能科技（上海）有限公司 | Permanent magnet coupling adjustment high-pressure air compressor |
| CN111697779A (en) * | 2019-03-12 | 2020-09-22 | 本田技研工业株式会社 | Motor unit and method for manufacturing motor unit |
| CN112460007A (en) * | 2020-08-19 | 2021-03-09 | 华能南京金陵发电有限公司 | Energy-saving speed regulating device and method for low-pressure-plus-drainage pump |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102810939A (en) * | 2012-08-13 | 2012-12-05 | 西安盾安电气有限公司 | Speed-self-regulating synchronous generating system |
| CN204993021U (en) * | 2015-08-06 | 2016-01-20 | 江苏磁谷科技股份有限公司 | Magnetic coupling transmission of speed regulation by constant power operation and transmission of additional power |
| CN207053364U (en) * | 2017-07-20 | 2018-02-27 | 江苏磁谷科技股份有限公司 | A kind of permanent magnet coupling buncher |
-
2017
- 2017-07-20 CN CN201710595753.5A patent/CN107317457B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102810939A (en) * | 2012-08-13 | 2012-12-05 | 西安盾安电气有限公司 | Speed-self-regulating synchronous generating system |
| CN204993021U (en) * | 2015-08-06 | 2016-01-20 | 江苏磁谷科技股份有限公司 | Magnetic coupling transmission of speed regulation by constant power operation and transmission of additional power |
| CN207053364U (en) * | 2017-07-20 | 2018-02-27 | 江苏磁谷科技股份有限公司 | A kind of permanent magnet coupling buncher |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111697779A (en) * | 2019-03-12 | 2020-09-22 | 本田技研工业株式会社 | Motor unit and method for manufacturing motor unit |
| CN111536060A (en) * | 2020-01-10 | 2020-08-14 | 爱景节能科技（上海）有限公司 | Permanent magnet coupling adjustment high-pressure air compressor |
| CN112460007A (en) * | 2020-08-19 | 2021-03-09 | 华能南京金陵发电有限公司 | Energy-saving speed regulating device and method for low-pressure-plus-drainage pump |
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| Publication number | Publication date |
|---|---|
| CN107317457B (en) | 2024-03-15 |
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