CN202475364U - Stepless speed adjusting device of alternating current motor driven by single-phase power supply - Google Patents
Stepless speed adjusting device of alternating current motor driven by single-phase power supply Download PDFInfo
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- CN202475364U CN202475364U CN2012200762995U CN201220076299U CN202475364U CN 202475364 U CN202475364 U CN 202475364U CN 2012200762995 U CN2012200762995 U CN 2012200762995U CN 201220076299 U CN201220076299 U CN 201220076299U CN 202475364 U CN202475364 U CN 202475364U
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- phase
- speed adjusting
- alternating current
- current motor
- stepless speed
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Abstract
The utility model relates to a stepless speed adjusting device of an alternating current motor driven by a single-phase power supply. The stepless speed adjusting device comprises the single-phase power supply, an AC/DC (Alternating Current/Direct Current) and filtering circuit, an inversion controller, a three-phase inversion driver, a three-phase alternating-current motor and a speed adjusting control interface, wherein the single-phase power supply is electrically connected to the three-phase inversion driver through the AC/DC and filtering circuit; the inversion controller is electrically connected with the three-phase inversion driver; the single-phase power supply supplies power to the inversion controller; the speed adjusting control interface is electrically connected with the inversion controller; and the output end of the single-phase inversion driver is electrically connected with the input end of the three-phase alternating-current motor. According to utility model, suitable frequency output is selected through the speed adjusting control interface and is used for generating a control signal for controlling the three-phase inversion driver to drive the three-phase alternating-current motor to achieve the speed adjusting aim, so that the whole cost of a stepless speed adjusting scheme is greatly reduced; and the stepless speed adjusting device has very good power performance, is very convenient to use and enables the three-phase alternating-current motor to have long service life and a low fault ratio.
Description
Technical field
The utility model relates to single-phase stepless speed regulation, is specifically related to a kind of alternating current machine stepless speed-regulating device that drives with single phase poaer supply.
Background technology
Present stage, like needs stepless speed regulation, the major applications scheme all adopted the direct current machine drive scheme under the condition of single phase poaer supply power supply, and had the brush direct current machine life-span short, and the brshless DC motor use cost is high.If can adopt AC induction motor to drive, above all problems will not exist.But the rotating speed of asynchronous machine and number of poles and ac frequency are proportional, and number of poles is generally definite in the design of electrical motor stage, and the user can't change number of poles.What unique ability became is exactly to change frequency.But load motor can't drive with frequency converter owing to there is the problem of running electric capacity.And the universal frequency converter parameter is many, and trouble is set, and a lot of users are forbidding.
The utility model content
To the deficiency of prior art, the utility model provides the alternating current machine stepless speed-regulating device of the single phase poaer supply driving that cost is low, easy to use and failure rate is low.
For realizing above-mentioned purpose, the utility model adopts following technical scheme:
The alternating current machine stepless speed-regulating device that single phase poaer supply drives; It comprises single phase poaer supply, AC/DC and filter circuit, inverter controller, three-phase inversion driver, three phase alternating current motor, speed regulating control interface; Said single phase poaer supply is electrically connected to the three-phase inversion driver through AC/DC and filter circuit; Inverter controller electrically is connected with the three-phase inversion driver; Single phase poaer supply and for inverter controller provides power supply, said speed regulating control interface and inverter controller electrically connect, and the three-phase inversion output end of driver is electrically connected to the input of three phase alternating current motor.
Preferably, said AC/DC and filter circuit comprise rectification circuit and filter circuit, and single phase poaer supply is successively through being electrically connected to the three-phase inversion driver behind said rectification circuit, the filter circuit.
Preferably, said rectification circuit is a rectifier bridge, and said filter circuit is a filter capacitor.
The alternating current machine stepless speed-regulating device that the single phase poaer supply that the utility model is set forth drives; Compared with prior art; Its beneficial effect is: the utility model is selected suitable frequency output through the speed regulating control interface; Produce the control signal of control three-phase inversion driver, thereby make the output of three-phase inversion driver meet the three-phase drive power supply of user's setpoint frequency, drive three phase alternating current motor and reach the purpose of speed governing.The utility model makes the whole cost of stepless speed regulation scheme that reduction significantly arranged, and has good power performance, and user interface also can be simplified, and only provides potentiometer or other several simple switching value control interfaces to get final product, and uses very convenient.And the three phase alternating current motor life-span is long, failure rate is low, and inverter controller can provide necessary safeguard measure to alternating current machine again, makes the out of order possibility of motor drop to minimum.
Description of drawings
Accompanying drawing 1 is the structured flowchart of the alternating current machine stepless speed-regulating device of the utility model single phase poaer supply driving.
Embodiment
Below, in conjunction with accompanying drawing and embodiment, the alternating current machine stepless speed-regulating device that the single phase poaer supply of the utility model is driven is done and is further described, so that clearerly understand the utility model technological thought required for protection.
Accompanying drawing 1 is the structured flowchart of the alternating current machine stepless speed-regulating device of the utility model single phase poaer supply driving.As shown in Figure 1; The alternating current machine stepless speed-regulating device that single phase poaer supply drives; It comprises single phase poaer supply 1, AC/DC and filter circuit 2, inverter controller 3, three-phase inversion driver 5, three phase alternating current motor 6, speed regulating control interface 4; Single phase poaer supply 1 is electrically connected to three-phase inversion driver 5 through AC/DC and filter circuit 2, after single phase poaer supply 1 passes through AC/DC and filter circuit 2, has converted direct current to; Send into the alternating current that three-phase inversion driver 5 becomes frequency adjustable to this direct current again, as the power supply of three phase alternating current motor 6 frequency controls.In the utility model preferred embodiment, AC/DC and filter circuit 2 comprise rectification circuit and filter circuit, and single phase poaer supply 1 is successively through being electrically connected to three-phase inversion driver 5 behind rectification circuit, the filter circuit.Rectification circuit can adopt rectifier circuit, and filter circuit adopts filter capacitor to get final product.Inverter controller 3 electrically connects with three-phase inversion driver 5, and the output of three-phase inversion driver 5 is electrically connected to the input of three phase alternating current motor 6.
Single phase poaer supply 1 provides the control power supply for inverter controller 3 again; Speed regulating control interface 4 electrically connects with inverter controller 3, and the user can select suitable frequency output, the frequency that inverter controller 3 is selected according to the user through speed regulating control interface 4; According to the three-phase inversion algorithm; Produce the control signal of control three-phase inversion driver 5, thereby make 5 outputs of three-phase inversion driver meet the three-phase drive power supply of user's setpoint frequency, and then go to drive three phase alternating current motor 6 and the purpose that reaches stepless speed regulation.
And three phase alternating current motor 6 is with under the constant power; The performance outstanding than monophase machine, price advantage are arranged, and it can reach very wide speed adjustable range, when low speed; Inverter controller 3 can be through promoting measure such as moment, makes motor keep the constant force square even surpass normal moment.The utility model scheme can make the whole cost of stepless speed regulation scheme that reduction is significantly arranged, and has good power performance.User interface also can further be simplified, and only provides potentiometer or other several simple switching value control interfaces to get final product, and uses very convenient.And the three phase alternating current motor life-span is long, and failure rate is low, and inverter controller 3 can provide necessary safeguard measure to three phase alternating current motor again, makes the out of order possibility of motor drop to minimum.
The utility model drives and realizes the purpose of stepless speed regulation through adopting single phase poaer supply to three phase alternating current motor; Drive with existing single phase poaer supply that to have the brush direct current machine to compare the life-span long; Driving brshless DC motor with single phase poaer supply, to compare use cost low again; Compare and adopt universal frequency converter to drive AC induction motor, it is provided with simply, and is easy to use.
For a person skilled in the art, can make other various corresponding changes and distortion, and these all changes and distortion should belong within the protection range of the utility model claim all according to the technical scheme and the design of above description.
Claims (3)
1. the alternating current machine stepless speed-regulating device that drives of single phase poaer supply; It is characterized in that; It comprises single phase poaer supply, AC/DC and filter circuit, inverter controller, three-phase inversion driver, three phase alternating current motor, speed regulating control interface, it is characterized in that, said single phase poaer supply is electrically connected to the three-phase inversion driver through AC/DC and filter circuit; Inverter controller electrically is connected with the three-phase inversion driver; Single phase poaer supply and for inverter controller provides power supply, said speed regulating control interface and inverter controller electrically connect, and the three-phase inversion output end of driver is electrically connected to the input of three phase alternating current motor.
2. the alternating current machine stepless speed-regulating device that single phase poaer supply according to claim 1 drives; It is characterized in that; Said AC/DC and filter circuit comprise rectification circuit and filter circuit, and single phase poaer supply is successively through being electrically connected to the three-phase inversion driver behind said rectification circuit, the filter circuit.
3. the alternating current machine stepless speed-regulating device that single phase poaer supply according to claim 2 drives is characterized in that said rectification circuit is a rectifier bridge, and said filter circuit is a filter capacitor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200762995U CN202475364U (en) | 2012-03-02 | 2012-03-02 | Stepless speed adjusting device of alternating current motor driven by single-phase power supply |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200762995U CN202475364U (en) | 2012-03-02 | 2012-03-02 | Stepless speed adjusting device of alternating current motor driven by single-phase power supply |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202475364U true CN202475364U (en) | 2012-10-03 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012200762995U Expired - Fee Related CN202475364U (en) | 2012-03-02 | 2012-03-02 | Stepless speed adjusting device of alternating current motor driven by single-phase power supply |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202475364U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112583325A (en) * | 2020-12-16 | 2021-03-30 | 珠海格力电器股份有限公司 | Stepless speed regulation driving system, method and device, electronic equipment and storage medium |
-
2012
- 2012-03-02 CN CN2012200762995U patent/CN202475364U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112583325A (en) * | 2020-12-16 | 2021-03-30 | 珠海格力电器股份有限公司 | Stepless speed regulation driving system, method and device, electronic equipment and storage medium |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121003 Termination date: 20150302 |
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| EXPY | Termination of patent right or utility model |