CN101697444A - Three-phase synchronous motor half time pole starting structure - Google Patents
Three-phase synchronous motor half time pole starting structure Download PDFInfo
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- CN101697444A CN101697444A CN200910209439A CN200910209439A CN101697444A CN 101697444 A CN101697444 A CN 101697444A CN 200910209439 A CN200910209439 A CN 200910209439A CN 200910209439 A CN200910209439 A CN 200910209439A CN 101697444 A CN101697444 A CN 101697444A
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- winding
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- synchronous motor
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Abstract
The invention relates to a three-phase synchronous motor half time pole starting structure which comprises two sets of windings, wherein the two sets of windings are respectively a starting winding and a running winding; the starting winding is positioned at the inner part, and the running winding is positioned at the outer part; and the starting winding is connected with the running winding by a centrifugal switch. When the rotating speed of the starting winding is close to the synchronous rotating speed of the motor, the centrifugal switch is disconnected with the start winding, the starting winding stops work, and the running winding is driven by the starting winding to start normal running. The number of pole pairs of the starting winding is one half of or less than the number of the pole pairs of the running windings. By adopting the technical scheme, common rare earth permanent magnet three-phase synchronous motors no longer need a transducer to start a motor, thereby saving the cost of customers.
Description
Technical field
The present invention relates to three-phase synchronous motor, adopt the startup structure of the three-phase synchronous motor that starts winding and operation winding specifically.
Background technology
The rare earth permanent magnet three-phase synchronous motor has the feature of full voltage starting, and starting current is excessive, particularly surpasses the heavy-duty motor of 15kw, for the excessive problem of customer service starting current, generally needs to increase supporting frequency converter and comes starter motor.So just increase client's operation and maintenance cost, be unfavorable for the popularization and the use of rare earth permanent magnet three-phase synchronous motor.
Summary of the invention
The startup structure that the purpose of this invention is to provide a kind of rare earth permanent magnet three-phase synchronous motor, it is excessive to overcome present like product starting current, needs to increase the problem of supporting frequency converter starter motor.
The objective of the invention is to be achieved through the following technical solutions:
Three-phase synchronous motor half time pole starting structure, comprise two cover windings, two cover windings are respectively to start winding and operation winding, start winding and be positioned at inside, the operation winding is positioned at the outside, starts between winding and the operation winding to connect by centrifugal switch, when starting the winding rotating speed near the synchronous speed of motor, centrifugal switch disconnects with the startup winding, starts winding and quits work, and the operation winding begins normal operation under the drive that starts winding.The number of pole-pairs that starts winding is half of operation winding number of pole-pairs or lacks the utmost point.
Above-mentioned technical scheme can make rare earth permanent magnet three-phase synchronous motor commonly used no longer need the frequency converter starter motor, has so just saved client's cost.
Description of drawings
With embodiment the present invention is described in further detail with reference to the accompanying drawings below.
Fig. 1 is the structure principle chart of the described three-phase synchronous motor half time pole starting structure of the embodiment of the invention
Among the figure:
1, starts winding; 2, operation winding.
Embodiment
As shown in Figure 1, three-phase synchronous motor half time pole starting structure of the present invention, comprise two cover windings, two cover windings are respectively to start winding 1 and operation winding 2, start winding 1 and are positioned at inside, operation winding 2 is positioned at the outside, start between winding 1 and the operation winding 2 and connect by centrifugal switch, when starting winding 1 rotating speed near the synchronous speed of motor, centrifugal switch with start winding 1 and disconnect, start winding 1 and quit work, operation winding 2 begins to run well under the drive that starts winding 1.The number of pole-pairs that starts winding 1 is half of operation winding 2 numbers of pole-pairs or lacks the utmost point.
Above-mentioned technical scheme can make rare earth permanent magnet three-phase synchronous motor commonly used no longer need the frequency converter starter motor, has so just saved client's cost.
Claims (1)
1. three-phase synchronous motor half time pole starting structure, comprise two cover windings, two cover windings are respectively to start winding and operation winding, start winding and be positioned at inside, the operation winding is positioned at the outside, start between winding and the operation winding and connect by centrifugal switch, when starting the winding rotating speed near the synchronous speed of motor, centrifugal switch disconnects with the startup winding, starting winding quits work, move winding and begin to run well under the drive that starts winding, it is characterized in that, the number of pole-pairs that starts winding is half of operation winding number of pole-pairs or lacks the utmost point.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910209439A CN101697444A (en) | 2009-10-30 | 2009-10-30 | Three-phase synchronous motor half time pole starting structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910209439A CN101697444A (en) | 2009-10-30 | 2009-10-30 | Three-phase synchronous motor half time pole starting structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101697444A true CN101697444A (en) | 2010-04-21 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200910209439A Pending CN101697444A (en) | 2009-10-30 | 2009-10-30 | Three-phase synchronous motor half time pole starting structure |
Country Status (1)
| Country | Link |
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| CN (1) | CN101697444A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN112803850A (en) * | 2020-12-31 | 2021-05-14 | 天津瑞能电气有限公司 | Double-winding permanent magnet synchronous motor dragging control method |
| CN113014147A (en) * | 2019-12-19 | 2021-06-22 | 新疆金风科技股份有限公司 | Converter control method and device |
-
2009
- 2009-10-30 CN CN200910209439A patent/CN101697444A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN113014147A (en) * | 2019-12-19 | 2021-06-22 | 新疆金风科技股份有限公司 | Converter control method and device |
| CN113014147B (en) * | 2019-12-19 | 2022-09-13 | 新疆金风科技股份有限公司 | Converter control method and device |
| CN112803850A (en) * | 2020-12-31 | 2021-05-14 | 天津瑞能电气有限公司 | Double-winding permanent magnet synchronous motor dragging control method |
| CN112803850B (en) * | 2020-12-31 | 2023-02-03 | 天津瑞能电气有限公司 | Double-winding permanent magnet synchronous motor dragging control method |
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20100421 |