CN201663526U - Direct-current supply variable frequency speed adjusting three-phase asynchronous motor - Google Patents
Direct-current supply variable frequency speed adjusting three-phase asynchronous motor Download PDFInfo
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- CN201663526U CN201663526U CN2010201088750U CN201020108875U CN201663526U CN 201663526 U CN201663526 U CN 201663526U CN 2010201088750 U CN2010201088750 U CN 2010201088750U CN 201020108875 U CN201020108875 U CN 201020108875U CN 201663526 U CN201663526 U CN 201663526U
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- 238000004804 winding Methods 0.000 claims abstract description 45
- 238000005516 engineering process Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 230000003137 locomotive effect Effects 0.000 description 1
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Abstract
The utility model discloses a direct-current supply variable frequency speed adjusting three-phase asynchronous motor. A stator winding of the motor adopts star connection three-phase double windings; and compared with a common star connection three-phase asynchronous motor, each phase adopts double windings, the second winding of the first phase is connected in series with the first winding of the second phase, the second winding of the second phase is connected in series with the first winding of the third phase, and the second winding of the third phase is connected in series with the first winding of the first phase. The windings of the three-phase motor are divided into independent three groups, each group has two phases, and the same rotating magnetic field as that of a start connection three-phase asynchronous motor can be formed on a stator by supplying direct current in turn. A driver consists of a power electronic device and an integrated circuit, and start and speed adjustment of the motor are realized by controlling power on and off of the three groups of windings. The control circuit is simple, has the advantage of the three-phase asynchronous motor, direct-current supply variable frequency speed adjustment and low cost, and is suitable for a high-power traction motor.
Description
Affiliated technical field
The utility model relates to a kind of electromechanical integrated device, is the threephase asynchronous of a kind of direct current supply variable ratio frequency changer speed governing.
Background technology
At present, known brshless DC motor (claiming DC frequency-changing again) is made up of driver and motor, and the stator winding of motor is made three symmetrical star connections more, and is quite similar with threephase asynchronous.Be stained with the permanent magnet that has magnetized on the rotor of motor,, position transducer be housed in motor in order to detect the polarity of motor rotor.Driver is made of power electronic device and integrated circuit etc., and its function is: accept motor startup, stop, brake signal, with the startup of control motor, stop and braking; Accept position sensor signal and rotating signal, be used for controlling the break-make of each power tube of inverter bridge, produce continuous torque; Accept speed command and feedback speed signal, be used for controlling and the adjustment rotating speed.Control mode is complicated, and rotor is made up of permanent magnet, and cost is higher not to be suitable for the High power Traction motor.
Summary of the invention
Complicated for overcoming the brshless DC motor control mode, the higher deficiency that is not suitable for the High power Traction motor of cost, the utility model provides a kind of electromechanical integration technology, this technology has low advantage of the simple cost of control circuit and the speed governing of direct current supply variable ratio frequency changer, is suitable for the High power Traction motor.
The technical scheme that its technical problem that solves the utility model adopts is: the stator winding of motor adopts star to connect the three-phase double winding, connecing threephase asynchronous with common star compares, each all uses double winding mutually instead, No. two windings of first phase and second mutually the windings in series, No. two windings of second phase and a windings in series of third phase, No. two windings of third phase and first windings in series mutually.The threephase motor winding has been divided into independently three groups, and every group accounts for two-phase, and logical successively direct current can form on stator with star and connect the same rotating magnetic field of threephase asynchronous.Thereby the frequency that changes energising can change the rotary speed in magnetic field and change motor speed.Driver is made of power electronic device and integrated circuit, controls startup and speed governing that three groups of winding energisings and outage realize motor.
The beneficial effects of the utility model are, it is more stable to have simplified the lower work of control circuit cost, have the advantage of threephase asynchronous and have solved the problem of speed governing difficulty, are applicable to high-power locomotive traction.
Description of drawings
Below in conjunction with drawings and Examples the utility model is further specified.
Fig. 1 is a basic circuit diagram of the present utility model.
Among Fig. 1,1. first phase No. two windings are 2. with second mutually the winding, 3. second phase No. two windings, 4. third phase winding, 5. third phase No. two windings, 6. first winding, 7. turn-off SCR mutually, 8. No. two turn-off SCRs, 9. No. three turn-off SCRs, 10. DC power supply
Embodiment
In Fig. 1, No. two windings (1) of first phase and second mutually a winding (2) series connection, No. two windings (3) of second phase are connected with a winding (4) of third phase, and No. two windings (5) of third phase and first winding (6) are mutually connected.A turn-off SCR (7) conducting is turn-offed then, and then No. two turn-off SCRs (8) conducting is turn-offed then, and then No. three turn-off SCRs (9) conducting is turn-offed then, and circulation can form rotating magnetic field and make the motor rotation on stator successively.The frequency that the conducting of control turn-off SCR is turn-offed can realize speed governing.
Claims (2)
1. direct current supply frequency control threephase asynchronous, utilize driving device controls electric motor starting and speed governing, it is characterized in that: motor stator adopts star to connect the three-phase double winding, each all uses double winding mutually instead, No. two windings of first phase and second mutually the windings in series, No. two windings of second phase and a windings in series of third phase, No. two windings of third phase and first windings in series mutually; The winding of threephase motor has been divided into independently three groups, and every group accounts for two-phase, and logical successively direct current can form on stator with star and connect the same rotating magnetic field of threephase asynchronous.
2. direct current supply frequency control threephase asynchronous according to claim 1, it is characterized in that: driver is made of power electronic device and integrated circuit, controls startup and speed governing that three groups of winding energisings and outage realize motor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201088750U CN201663526U (en) | 2010-01-31 | 2010-01-31 | Direct-current supply variable frequency speed adjusting three-phase asynchronous motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201088750U CN201663526U (en) | 2010-01-31 | 2010-01-31 | Direct-current supply variable frequency speed adjusting three-phase asynchronous motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201663526U true CN201663526U (en) | 2010-12-01 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010201088750U Expired - Fee Related CN201663526U (en) | 2010-01-31 | 2010-01-31 | Direct-current supply variable frequency speed adjusting three-phase asynchronous motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201663526U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018023892A1 (en) * | 2016-08-05 | 2018-02-08 | 曹兵 | Direct current drive method and system for alternating current motor, and synchronous motor using the system |
-
2010
- 2010-01-31 CN CN2010201088750U patent/CN201663526U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018023892A1 (en) * | 2016-08-05 | 2018-02-08 | 曹兵 | Direct current drive method and system for alternating current motor, and synchronous motor using the system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| DD01 | Delivery of document by public notice |
Addressee: Wang Shunfa Document name: Notification of Termination of Patent Right |
|
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20101201 Termination date: 20130131 |