CN1025977C - Self-coupling inner compensation and inner feedback speed-regulating motor - Google Patents
Self-coupling inner compensation and inner feedback speed-regulating motor Download PDFInfo
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- CN1025977C CN1025977C CN 92111014 CN92111014A CN1025977C CN 1025977 C CN1025977 C CN 1025977C CN 92111014 CN92111014 CN 92111014 CN 92111014 A CN92111014 A CN 92111014A CN 1025977 C CN1025977 C CN 1025977C
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- regulating motor
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Abstract
The present invention relates to an internal feedback speed regulating motor with self-coupling and inner-compensating, which is characterized in that a compensation winding connecting with a compensation capacitor is arranged on a stator core of the internal feedback speed regulating motor; the compensation winding can realize self-coupling connection with a regulating winding, have identical pole pair number and winding direction with the regulating winding and is inserted in an identical groove mode; capacitive compensation is implemented at the compensation winding end by the compensation capacitor; the regulating winding and the compensation winding which are connected in a self-coupling mode can generate an advanced capacitive current. On one hand, the magnetic assisting action to the motor is generated by magnetic potential balance, and an exciting current of a stator main winding is reduced; on the other hand, the exciting current is superposed with a lagged sensitive current generated in the regulating winding, and therefore, the total current effective value is reduced; the loss and the heat generation of the regulating winding are reduced.
Description
The present invention relates to a kind of three-phase wound-rotor and lead the inner feedback speed-regulating motor of compensation in step motor, the particularly a kind of self coupling, be applicable to the equipment that all adopt electric machine speed regulation to drag.
In the prior art, adjustable-speed motor mostly is the stator of being made up of stator main winding that embeds on stator core and its and support, the rotor that rotor core and the rotor winding that embeds on it and rotating shaft are formed, be contained in the rotating shaft and the collector ring of connection rotor winding and the common three-phase wound-rotor asynchronous motor that brush constitutes thereof, the traditional cascade adjustable-speed system that constitutes is to seal in an adjustable additional electromotive force identical or opposite with rotor induced potential direction to realize speed governing from the motor outside, this governing system is by common three-phase wound-rotor asynchronous motor, the silicon-controlled conversion device, smoothing reactor, compositions such as contravariant transformer, the slip power that speed governing produces is absorbed from electrical network by the stator main winding of motor, again through rotor, the silicon-controlled conversion device, smoothing reactor, contravariant transformer feedback telegram in reply net, thereby, this governing system that constitutes is removed and is existed complex structure, system is huge, outside the shortcoming of cost height, also existing the loss that the circle transmission of meaningless slip power causes increases, the deficiency of efficient reduction, and electrical network had pollution.No. the 1st, Chinese invention patent communique the 3rd volume of publishing on January 7th, 1987 is disclosed, application number is 85104845 three phase commutatorless motor with inverter, it is to embed an adjusting winding on the motor stator core again and the adjusting winding is connected with the rotor winding through convertor assembly and the collector ring and the brush thereof that are contained on the machine shaft, the inner feedback speed-regulating motor of the additional electromotive force of the identical adjustable amplitude value of frequency is provided for rotor, though can overcome the deficiency of aforesaid traditional cascade adjustable-speed system, but owing to be subjected to leading change of current power electronic device (GTO, GTR) constraint of manufacture level and economy thereof, the convertor assembly of its configuration still is made of triode thyristor, control mode is lagging phase control, therefore when this inner feedback speed-regulating motor work, it is regulated in the winding current and contains perceptual idle component, this perceptual idle component has demagnetizing effect to motor, the excitatory impedance of motor is reduced, thereby cause the exciting curent of motor stator main winding to increase, cause this inner feedback speed-regulating motor loss to increase, temperature rise is increased, power factor reduces, particularly when the inverterangle of convertor assembly during near 90 °, worse off, the electric current of regulating in the winding is perceptual reactive current fully, this will cause motor stator main winding current overrate, cisco unity malfunction when serious.
The objective of the invention is to overcome above-mentioned the deficiencies in the prior art, and the inner feedback speed-regulating motor of compensation in a kind of self coupling is provided.
Purpose of the present invention can realize by such technical scheme: the inner feedback speed-regulating motor of compensation in this self coupling, it comprises: stator core and the stator main winding that embeds with groove on it, regulate winding, the stator that compensation winding and support are formed, the rotor that rotor core and the rotor winding that embeds on it and rotating shaft are formed, be contained in the rotating shaft and connect the collector ring (K of rotor winding, L, M) and brush, convertor assembly, be connected into Y shape or be connected into the compensation condenser that the electric capacity of △ shape constitutes by three, and the number of pole-pairs of described adjusting winding and compensation winding with embed with groove around organizing coil mutually to equal identical and each corresponding utmost points, one end of every phase winding of compensation winding is connected to the R that regulates winding, S, on three end points of T, the other end (the A of every phase winding of compensation winding, B, C) be connected on three ends of compensation condenser, regulate the R of winding, S, three end points of T also are connected to the collector ring (K that is contained in the rotating shaft and connects the rotor winding by convertor assembly, L, M) on the brush.
Above-mentioned adjusting winding can be connected into Y shape; Also can be connected into △ shape; Also can constitute the phase winding of a new winding with the phase winding series connection of the homophase that compensates winding, this winding is connected into △ shape.
The stator main winding of the inner feedback speed-regulating motor of compensation can be connected into △ shape in the above-mentioned self coupling provided by the utility model; Also can be connected into Y shape.
For sealing in current limiting reactor between the compensation winding that suppresses the inner feedback speed-regulating motor that harmonic current and vibration can also compensate in above-mentioned self coupling and compensation condenser.
The inner feedback speed-regulating motor of compensation in this self coupling provided by the present invention, simple in structure, the adjusting winding that is provided with on the stator can be by convertor assembly, be contained on the motor rotary shaft and the collector ring (K, L, M) and the brush thereof that connect the rotor winding provides same frequency and the additional electromotive force of adjustable amplitude value to the rotor winding, as long as by the amplitude that convertor assembly is regulated the additional electromotive force that offers the rotor winding, can realize the smooth stepless speed-regulating of motor; And the capacitance compensation that compensation condenser is implemented at the compensation winding terminal, adjusting winding and compensation winding that self coupling is connected produce leading capacity current, the capacity current that this is leading, pass through magnetic potential balance on the one hand, generation is to the magnetic assist effect of motor, the exciting curent of stator main winding is reduced, superpose with the inductance current of regulating the hysteresis that produces in the winding again on the other hand, total current effective value is reduced, thereby reduce loss and the heating of regulating winding, therefore both improved the power factor of motor, reduced loss again, improve efficiency of motor, also can reduce the volume of motor, reduce the cost of motor.
The inner feedback speed-regulating motor of compensation in this self coupling provided by the present invention, owing on stator core, be provided with and regulate the winding number of pole-pairs and embed with groove around organizing coil mutually to equal identical and each corresponding utmost points, also with the compensation winding that is connected compensation condenser of regulating the connection of winding self coupling, solved the influence that is subjected to the rotor winding voltage lower preferably, the voltage of regulating winding is lower, when carrying out capacitance compensation to regulating winding, adjusting winding voltage compensation condenser rated voltage on the low side is more will to cause the compensation condenser waste of capacity, reimbursement for expenses increases, and with the too high contradiction of low rated voltage capacitor manufacturing cost of regulating the winding voltage coupling.
The present invention is described in further detail below in conjunction with embodiment and accompanying drawing thereof:
The electric circuit diagram of the inner feedback speed-regulating motor that compensates in the embodiment of the invention 1,2,3 self couplings that provided is provided Fig. 1.
The winding connection figure of the inner feedback speed-regulating motor that compensates in the self coupling that Fig. 2 is provided for the embodiment of the invention 1.
The winding connection figure of the inner feedback speed-regulating motor that compensates in the self coupling that Fig. 3 is provided for the embodiment of the invention 2.
The winding connection figure of the inner feedback speed-regulating motor that compensates in the self coupling that Fig. 4 is provided for the embodiment of the invention 3.
With reference to accompanying drawing 1,2, the inner feedback speed-regulating motor of compensation in the self coupling that the embodiment of the invention 1 is provided, it comprises: stator core and the stator main winding 1 that is connected into △ shape that embeds with groove on it, be connected into the adjusting winding 3 of Y shape, the stator that compensation winding 4 and support are formed, the rotor that rotor core and the rotor winding 2 that embeds on it and rotating shaft are formed, be contained in the rotating shaft and connect the collector ring (K of rotor winding 2, L, M) and brush, ac equipment 5, the compensation condenser 6 that constitutes by three electric capacity that are connected into Y shape, go here and there current limiting reactor 76 of every phase winding of compensation winding 4 and compensation condensers for suppressing harmonic current and vibration, and the number of pole-pairs of described adjusting winding 3 and compensation winding 4 with embed with groove around organizing coil mutually to equal identical and each corresponding utmost points, one end of every phase winding of compensation winding 4 is connected to the R that regulates winding 3, S, on three end points of T, the other end (the A of every phase winding of compensation winding 4, B, C) be connected on three ends of compensation condenser 6 by a current limiting reactor 7 respectively, regulate the R of winding 3, S, three end points of T also are connected to the collector ring (K that is contained in the rotating shaft and connects rotor winding 2 by convertor assembly 5, L, M) on the brush.W, u, v are the three-phase alternating-current supply input of stator main winding 1 among the figure.
With reference to accompanying drawing 1,3, the inner feedback speed-regulating motor of compensation in the self coupling that the embodiment of the invention 2 is provided, it comprises: stator core and the stator main winding 1 that is connected into Y shape that embeds with groove on it, be connected into the adjusting winding 3 of △ shape, the stator that compensation winding 4 and support are formed, the rotor that rotor core and the rotor winding 2 that embeds on it and rotating shaft are formed, be contained in the rotating shaft and connect the collector ring (K of rotor winding 2, L, M) and brush, convertor assembly 5, the compensation condenser 6 that constitutes by three electric capacity that are connected into Y shape, go here and there current limiting reactor 76 of every phase winding of compensation winding 4 and compensation condensers for suppressing harmonic current and vibration, and the number of pole-pairs of described adjusting winding 3 and compensation winding 4 with embed with groove around organizing coil mutually to equal identical and each corresponding utmost points, one end of every phase winding of compensation winding 4 is connected to the R that regulates winding 3, S, on three end points of T, and the other end (A of every phase winding of compensation winding 4, B, C) be connected on three ends of compensation condenser 6 by a current limiting reactor 7 respectively, regulate the R of winding 3, S, three end points of T also are connected to the collector ring (K that is contained in the rotating shaft and connects rotor winding 2 by convertor assembly 5, L, M) on the brush.W, u, v are the three-phase alternating-current supply input of stator main winding 1 among the figure.
With reference to accompanying drawing 1,4, the inner feedback speed-regulating motor of compensation in the self coupling that the embodiment of the invention 3 is provided, it comprises: stator core and the stator main winding 1 that is connected into △ shape that embeds with groove on it, regulate winding 3, the stator that compensation winding 4 and support are formed, the rotor that rotor core and the rotor winding 2 that embeds on it and rotating shaft are formed, be contained in the rotating shaft and connect the collector ring (K of rotor winding 2, L, W) and brush, convertor assembly 5, the compensation condenser 6 that constitutes by three electric capacity that are connected into Y shape, go here and there at the current limiting reactor 7 that compensates 6 of winding 4 and compensation condensers for suppressing harmonic current and vibration, and the number of pole-pairs of described adjusting winding 3 and compensation winding 4 with embed with groove around organizing coil mutually to equal identical and each corresponding utmost points, the phase winding series connection of regulating the homophase of winding 3 and compensation winding 4 constitutes the phase winding of a new winding, this new winding is connected into △ shape, the other end (the A of every phase winding of compensation winding, B, C) be connected on three ends of compensation condenser 6 by a current limiting reactor 7 respectively, regulate the R of winding 3, S, three end points of T also are connected to the collector ring (K that is contained in the rotating shaft and connects rotor winding 2 by convertor assembly 5, L, M) on the brush.W, u, v are the three-phase alternating-current supply input of stator main winding 1 among the figure.
Claims (10)
1, the inner feedback speed-regulating motor of compensation in a kind of self coupling, the stator main winding 1 that has stator core and embed on it, support, the rotor that rotor core and the rotor winding 2 that embeds on it and rotating shaft are formed, be contained in the rotating shaft and connect the collector ring (K of rotor winding 2, L, M) and brush, convertor assembly 5, it is characterized in that: also embed to be provided with groove on the stator core and regulate winding 3 and compensation winding 4 with stator main winding 1, the number of pole-pairs of compensation winding 4 and adjusting winding 3 with embed with groove around organizing coil mutually to equal identical and each corresponding utmost points, one end of every phase winding of compensation winding 4 is connected to the R that regulates winding 3, S, on three end points of T, the other end (the A of every phase winding of compensation winding 4, B, C) be connected on three ends of compensation condenser 6, regulate the R of winding 3, S, three end points of T also are connected to the collector ring (K that is contained in the rotating shaft and connects rotor winding 2 by convertor assembly 5, L, W) on the brush.
2, the inner feedback speed-regulating motor of compensation in the self coupling according to claim 1, it is characterized in that: compensation condenser is made of three electric capacity that are connected into Y shape.
3, the inner feedback speed-regulating motor of compensation in the self coupling according to claim 1, it is characterized in that: compensation condenser is made of three electric capacity that are connected into △ shape.
4, the inner feedback speed-regulating motor of compensation in the self coupling according to claim 2 is characterized in that: regulate winding and be connected into Y shape.
5, the inner feedback speed-regulating motor of compensation in the self coupling according to claim 2 is characterized in that: regulate winding and be connected into △ shape.
6, the inner feedback speed-regulating motor of compensation in the self coupling according to claim 2 is characterized in that: the phase winding series connection of regulating the homophase of winding 3 and compensation winding 4 constitutes the phase winding of a new winding, and this new winding is connected into △ shape.
7, the inner feedback speed-regulating motor of compensation in the self coupling according to claim 3 is characterized in that: regulate winding and be connected into Y shape.
8, the inner feedback speed-regulating motor of compensation in the self coupling according to claim 3 is characterized in that: regulate winding and be connected into △ shape.
9, the inner feedback speed-regulating motor of compensation in the self coupling according to claim 3 is characterized in that: the phase winding series connection of regulating the homophase of winding 3 and compensation winding 4 constitutes the phase winding of a new winding, and this new winding is connected into △ shape.
10, according to the inner feedback speed-regulating motor that compensates in claim 4,5,6,7, the 8 or 9 described self couplings, it is characterized in that: three end points of A, B, C of compensation winding 4 are to be connected on three ends of compensation condenser 6 by a current limiting reactor 7 respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 92111014 CN1025977C (en) | 1992-09-28 | 1992-09-28 | Self-coupling inner compensation and inner feedback speed-regulating motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 92111014 CN1025977C (en) | 1992-09-28 | 1992-09-28 | Self-coupling inner compensation and inner feedback speed-regulating motor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1069839A CN1069839A (en) | 1993-03-10 |
| CN1025977C true CN1025977C (en) | 1994-09-21 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 92111014 Expired - Fee Related CN1025977C (en) | 1992-09-28 | 1992-09-28 | Self-coupling inner compensation and inner feedback speed-regulating motor |
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| Country | Link |
|---|---|
| CN (1) | CN1025977C (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102044924A (en) * | 2010-11-26 | 2011-05-04 | 山东电力研究院 | Internal double-feed wind-driven generator |
| CN102723833B (en) * | 2012-06-21 | 2015-04-22 | 山东电力集团公司电力科学研究院 | Three-phase induction motor with unbalanced voltage compensation function |
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1992
- 1992-09-28 CN CN 92111014 patent/CN1025977C/en not_active Expired - Fee Related
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| Publication number | Publication date |
|---|---|
| CN1069839A (en) | 1993-03-10 |
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