CN102111052A - Soft start method of efficient self-starting permanent magnet synchronous motor - Google Patents
Soft start method of efficient self-starting permanent magnet synchronous motor Download PDFInfo
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- CN102111052A CN102111052A CN 201110066426 CN201110066426A CN102111052A CN 102111052 A CN102111052 A CN 102111052A CN 201110066426 CN201110066426 CN 201110066426 CN 201110066426 A CN201110066426 A CN 201110066426A CN 102111052 A CN102111052 A CN 102111052A
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Abstract
The invention relates to a soft start method of an efficient self-starting permanent magnet synchronous motor, which is characterized in that the rotor of the efficient self-starting permanent magnet synchronous motor is provided with a squirrel cage winding used for asynchronous self-starting and a permanent magnet pole; the stator of the efficient self-starting permanent magnet synchronous motor is provided with a set of pole-changing simplex windings with bipolar numbers; the permanent magnet pole numbers of the rotor are equal to twice of pole numbers of less connecting windings of the pole-changing windings; the pole numbers of multipolar connecting windings are equal to the permanent magnet pole numbers of the rotor, so that the permanent magnet synchronous motor can realize asynchronous self-starting in an asynchronous motor state and operates at a synchronous speed in a state approximate to the synchronous speed state, the soft self-starting of the efficient self-starting permanent magnet synchronous motor is realized, the efficient self-starting permanent magnet synchronous motor has the characteristics of large starting torque, small starting current, small mechanical vibration and the like, and the starting performance of the efficient self-starting permanent magnet synchronous motor is improved.
Description
Technical field
The present invention relates to the permanent magnet motor technical field, particularly a kind of efficient self-starting permasyn motor soft-starting method.
Background technology
The permanent magnet synchronous motor air-gap field is provided by permanent magnet, and synchronous speed running status rotor side does not produce copper loss, and the efficient of permanent magnet synchronous motor and High Power Factor are more than the asynchronous motor nice and high, is typical energy-efficient product.Fig. 1 is known efficient self-starting permasyn motor structural representation, the air-gap field of efficient self-starting permasyn motor is provided by rotor side's permanent magnet shown in the figure, need not power supply exciting current is provided, have characteristics such as high efficiency and High Power Factor, but, efficient self-starting permasyn motor is in starting process, because rotor side's magnetic field of permanent magnet and stator winding cut mutually, in stator winding, produce induced current, its induced current is when having increased efficient self-starting permasyn motor starting current, induced current and permanent magnet magnetic field interactions produce asynchronous permanent magnet generator brake torque, its direction is opposite with the rotor speed direction, play braking action, reduced the electromagnetic torque of efficient self-starting permasyn motor in starting process, hinder efficient self-starting permasyn motor starting and acceleration, and the harmonic component of magnetic field of permanent magnet also produces the asynchronous permanent magnet generator brake torque of harmonic component, cause that efficient self-starting permasyn motor produces mechanical oscillation in starting process, plant equipment is produced the detrimental effect that impacts, therefore, asynchronous permanent magnet generator brake torque is unfavorable for the starting of efficient self-starting permasyn motor, is the principal element that influences starting performance.
Summary of the invention
The purpose of this invention is to provide a kind of efficient self-starting permasyn motor soft-starting method, can eliminate of the influence of the synchronous electronic asynchronous permanent magnet generator brake torque that in starting process, produces of efficient self-starting permanent magnet starting performance.
Efficient self-starting permasyn motor soft-starting method of the present invention, comprise efficient self-starting permasyn motor, it is characterized in that: the rotor of described efficient self-starting permasyn motor is provided with mouse cage winding and the permanent magnet pole that asynchronous self-starting is used, stator is provided with the pole-changing simplex winding of the bipolar number of a cover, the starting winding that few number of poles connection winding of described pole-changing simplex winding is efficient self-starting permasyn motor, under each utmost point pole-face of few number of poles connection winding two permanent magnet poles that face different magnetic poles mutually in rotor side should be arranged relatively, rotor side's permanent magnet magnetic number of poles equals 2 times of number of poles of few number of poles connection winding, the number of poles of multipole several connection windings of described pole-changing simplex winding equals the number of poles of rotor side's permanent magnet pole, the operation winding that multipole several connection windings are efficient self-starting permasyn motor.
The present invention can realize the permanent magnet synchronous motor rotating speed operation of pulling in asynchronous self-starting under the asynchronous motor state, under near the synchronous speed state, have that starting torque is big, starting current is little and characteristics such as mechanical oscillation are little, improved the starting performance of efficient self-starting permasyn motor.
Description of drawings
Fig. 1 is known efficient self-starting rare-earth permanent-magnet synchronous motor structural representation.
Fig. 2 is the magnetic pole schematic diagram of the few number of poles connection of embodiment of the invention variable-pole winding.
Fig. 3 is the magnetic pole schematic diagram of the multipole several connections of embodiment of the invention variable-pole winding.
Fig. 4 is the generation physical phenomenon schematic diagram of few number of poles connection winding of variable-pole winding in the embodiment of the invention starting process.
Fig. 5 is the generation physical phenomenon schematic diagram of multipole several connection windings of variable-pole winding in the embodiment of the invention starting process.
1 is support among Fig. 1; 2 is every magnetic bridge; 3 are rotating shaft; 4 is magnet isolation tank; 5 is permanent magnet; 6 is stator winding; 7 is the rotor winding; 8 is stator; 9 is rotor; 10 is air gap.
Embodiment
The invention provides a kind of efficient self-starting permasyn motor soft-starting method, it is characterized in that: the rotor of described efficient self-starting permasyn motor is provided with mouse cage winding and the permanent magnet pole that asynchronous self-starting is used, stator is provided with the pole-changing simplex winding of the bipolar number of a cover, the self-starting winding that few number of poles connection winding of described pole-changing simplex winding is efficient self-starting permasyn motor, under each utmost point pole-face of few number of poles connection winding two permanent magnet poles that face different magnetic poles mutually in rotor side should be arranged relatively, rotor side's permanent magnet magnetic number of poles equals 2 times of number of poles of few number of poles connection winding, the number of poles of multipole several connection windings of described pole-changing simplex winding equals the number of poles of rotor side's permanent magnet pole, the operation winding that multipole several connection windings are efficient self-starting permasyn motor.Figure 2 shows that the magnetic pole schematic diagram of the few number of poles connection of embodiment of the invention variable-pole winding, Fig. 3 is the magnetic pole schematic diagram of the multipole several connections of embodiment of the invention variable-pole winding, when efficient self-starting permasyn motor begins to start, variable-pole winding adopts few number of poles connection winding, it is the three-phase symmetrical alternating current of f that the winding of the few number of poles connection of stator feeds frequency, be called stator field producing in the air gap as the rotating magnetic field shown in a) among Fig. 4, this moment, rotor side permanent magnet number of poles equaled 2 times of stator field number of poles, efficient self-starting permasyn motor just begins starting, rotating speed is beginning to accelerate between the synchronous speed of 90～95% multipole several connections from zero rotating speed, the every number of poles connection winding that lacks mutually of rotor side magnetic field of permanent magnet cutting produces two as b among Fig. 4) shown in the stator winding induced electromotive force, at the winding I of few number of poles connection and the induced electromotive force equal and opposite in direction in the winding II, direction is just cancelled out each other on the contrary, like this, in starting process, the induced electromotive force that the few number of poles connection winding of magnetic field of permanent magnet cutting produces and equal zero, asynchronous permanent magnet generator brake torque also just equals zero, therefore, efficient self-starting permasyn motor has just been eliminated the detrimental effect of asynchronous permanent magnet generator brake torque in starting process, when efficient self-starting permasyn motor accelerates to the synchronous speed of 90～95% multipole several connections, variable-pole winding is switched connection, the connection that switches to multipole several windings by the connection of few number of poles winding as shown in Figure 5, be called stator field producing in the air gap as the rotating magnetic field shown in a) among Fig. 5, this moment, rotor side's permanent magnet number of poles equaled the number of poles of stator field, the every mutually multipole several connection windings of rotor side magnetic field of permanent magnet cutting produce two as b among Fig. 5) shown in the stator winding induced electromotive force, the equal and opposite in direction of the induced electromotive force that produces in multipole several connection winding I and winding II, direction is identical with regard to mutual superposition, the frequency of induced electromotive force is (1-s) f, f is a supply frequency, s is the revolutional slip of motor, the revolutional slip of corresponding multipole number is 0.1～0.05 when 90～95% multipole several synchronous speeds, the frequency of induced electromotive force approaches supply frequency, under the interaction of rotor side's magnetic field of permanent magnet and stator field, with the pull in rotating speed operation of efficient self-starting permasyn motor, finished efficient self-starting permasyn motor Soft Start-up Process.
The above person of thought, it only is preferred embodiment of the present invention, when not limiting scope of the invention process with this, promptly the simple equivalent of being done according to the present patent application claim and invention description content generally changes and modifies, and all still belongs in the scope that patent of the present invention contains.Arbitrary embodiment of the present invention in addition or claim must not reached the disclosed whole purposes of the present invention or advantage or characteristics.
Claims (1)
1. efficient self-starting permasyn motor soft-starting method, comprise efficient self-starting permasyn motor, it is characterized in that: the rotor of described efficient self-starting permasyn motor is provided with mouse cage winding and the permanent magnet pole that asynchronous self-starting is used, stator is provided with the pole-changing simplex winding of the bipolar number of a cover, the starting winding that few number of poles connection winding of described pole-changing simplex winding is efficient self-starting permasyn motor, under each utmost point pole-face of few number of poles connection winding two permanent magnet poles that face different magnetic poles mutually in rotor side should be arranged relatively, rotor side's permanent magnet magnetic number of poles equals 2 times of few number of poles connection winding number of poles, multipole several connection winding numbers of poles of described pole-changing simplex winding equal rotor side's permanent magnet magnetic number of poles, the operation winding that multipole several connection windings are efficient self-starting permasyn motor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110066426 CN102111052B (en) | 2011-03-19 | 2011-03-19 | Efficient self-starting permanent magnet synchronous motor |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110066426 CN102111052B (en) | 2011-03-19 | 2011-03-19 | Efficient self-starting permanent magnet synchronous motor |
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| CN102111052A true CN102111052A (en) | 2011-06-29 |
| CN102111052B CN102111052B (en) | 2013-01-16 |
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| CN 201110066426 Expired - Fee Related CN102111052B (en) | 2011-03-19 | 2011-03-19 | Efficient self-starting permanent magnet synchronous motor |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104967272A (en) * | 2015-06-26 | 2015-10-07 | 华中科技大学 | Permanent magnetism cage-type rotor pole-changing frequency conversion speed regulation motor |
| CN106059237A (en) * | 2016-06-12 | 2016-10-26 | 华中科技大学 | Pole variable self-starting vernier permanent magnet motor |
| CN107302295A (en) * | 2017-08-25 | 2017-10-27 | 亿德机电科技（福建）有限公司 | Permanent-magnetic synchronous motor rotor with cut-out winding function |
| CN108270302A (en) * | 2018-03-06 | 2018-07-10 | 崔金益 | A kind of self-starting magneto |
| CN109194077A (en) * | 2018-09-11 | 2019-01-11 | 华中科技大学 | A kind of pole-changing control magneto |
| CN109672279A (en) * | 2018-12-13 | 2019-04-23 | 华中科技大学 | A kind of rotor double winding pole-changing asynchronous starting vernier motor |
| CN109672280A (en) * | 2018-12-13 | 2019-04-23 | 华中科技大学 | A kind of asynchronous starting vernier motor |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2620421Y (en) * | 2003-04-23 | 2004-06-09 | 闽东电机(集团)股份有限公司 | High-efficient energy-saving synchronous motor of rare-earth permanent magnetic high-slip starting |
| US20050099083A1 (en) * | 2003-11-12 | 2005-05-12 | Hsu John S. | Simplified hybrid-secondary uncluttered machine and method |
| CN101645621A (en) * | 2009-06-23 | 2010-02-10 | 无锡市华东钢业机械有限公司 | Permanent magnet synchronous motor rotor integration stamped sheet used for oil-field oil pumper |
-
2011
- 2011-03-19 CN CN 201110066426 patent/CN102111052B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2620421Y (en) * | 2003-04-23 | 2004-06-09 | 闽东电机(集团)股份有限公司 | High-efficient energy-saving synchronous motor of rare-earth permanent magnetic high-slip starting |
| US20050099083A1 (en) * | 2003-11-12 | 2005-05-12 | Hsu John S. | Simplified hybrid-secondary uncluttered machine and method |
| CN101645621A (en) * | 2009-06-23 | 2010-02-10 | 无锡市华东钢业机械有限公司 | Permanent magnet synchronous motor rotor integration stamped sheet used for oil-field oil pumper |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104967272A (en) * | 2015-06-26 | 2015-10-07 | 华中科技大学 | Permanent magnetism cage-type rotor pole-changing frequency conversion speed regulation motor |
| CN104967272B (en) * | 2015-06-26 | 2017-11-24 | 华中科技大学 | A kind of pole-changing-rotor frequency control motor of permanent magnetism cage modle |
| CN106059237A (en) * | 2016-06-12 | 2016-10-26 | 华中科技大学 | Pole variable self-starting vernier permanent magnet motor |
| CN106059237B (en) * | 2016-06-12 | 2019-01-11 | 华中科技大学 | One kind can the self-running vernier magneto of pole-changing |
| CN107302295A (en) * | 2017-08-25 | 2017-10-27 | 亿德机电科技（福建）有限公司 | Permanent-magnetic synchronous motor rotor with cut-out winding function |
| CN107302295B (en) * | 2017-08-25 | 2023-07-04 | 亿德机电科技（福建）有限公司 | Permanent magnet synchronous motor rotor with winding cutting function |
| CN108270302A (en) * | 2018-03-06 | 2018-07-10 | 崔金益 | A kind of self-starting magneto |
| CN109194077A (en) * | 2018-09-11 | 2019-01-11 | 华中科技大学 | A kind of pole-changing control magneto |
| CN109672279A (en) * | 2018-12-13 | 2019-04-23 | 华中科技大学 | A kind of rotor double winding pole-changing asynchronous starting vernier motor |
| CN109672280A (en) * | 2018-12-13 | 2019-04-23 | 华中科技大学 | A kind of asynchronous starting vernier motor |
| CN109672280B (en) * | 2018-12-13 | 2020-09-08 | 华中科技大学 | Asynchronous starting vernier motor |
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| CN102111052B (en) | 2013-01-16 |
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