CN1921285A - Start control circuit for single-phase motor - Google Patents
Start control circuit for single-phase motor Download PDFInfo
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- CN1921285A CN1921285A CN 200510014805 CN200510014805A CN1921285A CN 1921285 A CN1921285 A CN 1921285A CN 200510014805 CN200510014805 CN 200510014805 CN 200510014805 A CN200510014805 A CN 200510014805A CN 1921285 A CN1921285 A CN 1921285A
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- stator
- winding
- motor
- control circuit
- auxiliary winding
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Abstract
The invention relates to a starting circuit of motor, especially the starting control circuit of single-phase motor. Wherein, it comprises: a stator mounted inside the frame; main and auxiliary windings inside the stator; rotor and winding via axle and bearing rotationally mounted at the middle of stator; the currents of main and auxiliary windings generate phase difference to generate rotation magnetic field in stator to rotate the rotor. The invention is characterized in that: the device that makes the currents of main and auxiliary windings generate phase difference to generate rotation magnetic field in stator to rotate the rotor via the input of light couple bidirectional controllable silicon switch is connected to the I/O interface of single chip, while the input is connected to the ground. And the silicon switch is serially connected to the auxiliary winding for powering alternative current on the main and auxiliary winding.
Description
Technical field
The present invention relates to the start-up control circuit of the start-up circuit of motor, particularly a kind of single-phase motor.
Background technology
Monopole asynchronous motor claims monocyclic-start induction motor again, only needs the single phase alternating current power supply power supply, for example is widely used in household electrical appliance: in refrigerator, air conditioner, washing machine, the fan.Because the magnetic field that a phase winding produces is not rotating magnetic field, but pulsating field, so its synthetic torque that acts on rotor is zero, be that detent torque is zero, in order to obtain detent torque, a phase winding should be divided into two groups of windings, be called grouping, according to the difference of minute phase method, monopole asynchronous motor has capacitor split-phase, organizes anti-split-phase type, three kinds of shaded-poles, is widely used in the product.
Its stator winding of electric capacity phase-splitting monopole asynchronous motor is divided into two windings (main winding) that promptly turn round, and the two structurally differs 90 ° of angles with starting winding (auxiliary winding), start tandem promoter capacitor C in the wraparound road, make current phase difference in two windings, promptly produce detent torque and produce rotating magnetic field.
Need big capacity price high capacitance but change motor start-up winding current phase place with the startup capacitor C as shown in Figure 1, so and to need external bleeder circuit to carry out the higher assembling of two-stage speed governing cost also cumbersome.
Summary of the invention
The present invention provides a kind of start-up circuit that single-chip microcomputer superfluous signal resource realizes the monopole asynchronous motor that the motor stator winding current phase changes that makes full use of for solving the problem that exists in the above-mentioned known technology.The technical scheme that the present invention deals with problems by: be installed on the stator in the motor casing; Coiling is installed on the main winding and auxiliary winding in the stator; With pivot, rotor and the winding of bearing rotary setting in the middle of stator; Make the main winding and auxiliary winding electric current of stator produce phase difference, in stator, produce the device formation that rotating magnetic field drives the rotor rotation, it is characterized in that: it makes, and electric current produces phase difference in the main winding and auxiliary winding of stator, produce rotating magnetic field in stator drives the device of rotor rotation by the input one termination single-chip processor i/o interface of optical coupling bi-directional thyristor switch, input end grounding in addition, and bi-directional thyristor switch is serially connected with in the auxiliary winding loop of the AC power cord that stator major-minor winding powers up and constitutes.
Above-mentioned single-chip processor i/o interface output adds the signal that the AC power power frequency is identical, phase place is adjustable with motor.
The motor main winding and auxiliary winding powers up equal cross-over connection capacitance-resistance serial connection absorption circuit on the loop.
Advantage and good effect: and the advantage of start-up control circuit that changes the motor start-up control circuit comparison single-phase motor of the present invention of current phase with startup electric capacity is:
1. startup electric capacity and the bleeder circuit of Da Rong value, high price have been saved.
2. made full use of the unnecessary interface signal resource of single-chip microcomputer in the household electrical appliances such as air-conditioning.
3. can realize multistep speed regulation.
Description of drawings
Fig. 1 is existing single-phase motor capacitor start control circuit figure;
Fig. 2 is the start-up control circuit diagram of single-phase motor of the present invention.
Among each figure: C-starts capacitor F-motor
T-bi-directional thyristor switch I/O-input/output interface
Lm-main winding Ls-auxiliary winding
Embodiment
For further understand content of the present invention, principle, function, characteristics more in conjunction with the accompanying drawings example be described as follows:
Fig. 2 implements technical scheme of the present invention as shown in Figure 2 and includes: be installed on the stator in the motor F casing for the start-up control circuit diagram of single-phase motor of the present invention; Coiling is installed on main winding and auxiliary winding Lm, the Ls in the stator; With pivot, rotor and the winding of bearing rotary setting in the middle of stator; Make the main winding and auxiliary winding electric current of stator produce phase difference, in stator, produce the device formation that rotating magnetic field drives the rotor rotation, it is characterized in that: it makes, and electric current produces phase difference in the main winding and auxiliary winding of stator, produce rotating magnetic field in stator drives the device of rotor rotation by the input one termination single-chip processor i/o interface of optical coupling bi-directional thyristor switch T, input end grounding in addition, and bi-directional thyristor switch T is serially connected with in the auxiliary winding Ls loop of the AC power cord that stator major-minor winding powers up.
The output of single-chip processor i/o interface adds the signal that the AC power power frequency is identical, phase place is adjustable with motor.
The motor main winding and auxiliary winding power up on the loop all that cross-over connection capacitance-resistance R, C serial connection absorbs circuit.
Claims (3)
1. the start-up control circuit of a single-phase motor includes: be installed on the stator in the motor casing; Coiling is installed on the main winding and auxiliary winding in the stator; With pivot, rotor and the winding of bearing rotary setting in the middle of stator; Make the main winding and auxiliary winding electric current of stator produce phase difference, in stator, produce the device formation that rotating magnetic field drives the rotor rotation, it is characterized in that: it makes, and electric current produces phase difference in the main winding and auxiliary winding of stator, produce rotating magnetic field in stator drives the device of rotor rotation by the input one termination single-chip processor i/o interface of optical coupling bi-directional thyristor switch, input end grounding in addition, and bi-directional thyristor switch is serially connected with in the auxiliary winding loop of the AC power cord that stator major-minor winding powers up.
2. the start-up control circuit of single-phase motor according to claim 1 is characterized in that: the output of single-chip processor i/o interface adds the signal that the AC power power frequency is identical, phase place is adjustable with motor.
3. the start-up control circuit of single-phase motor according to claim 1 is characterized in that: the motor main winding and auxiliary winding powers up on the loop all that cross-over connection capacitance-resistance serial connection absorbs circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510014805 CN1921285A (en) | 2005-08-22 | 2005-08-22 | Start control circuit for single-phase motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510014805 CN1921285A (en) | 2005-08-22 | 2005-08-22 | Start control circuit for single-phase motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1921285A true CN1921285A (en) | 2007-02-28 |
Family
ID=37778902
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200510014805 Pending CN1921285A (en) | 2005-08-22 | 2005-08-22 | Start control circuit for single-phase motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1921285A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102006002A (en) * | 2010-11-03 | 2011-04-06 | 苏州合欣美电子科技有限公司 | Drive circuit of alternating current fan |
| CN101635547B (en) * | 2009-08-21 | 2011-04-13 | 常熟市天银机电股份有限公司 | Single-phase electric motor power consumption-free starter combined with overloading protector |
| CN101772883B (en) * | 2007-08-02 | 2013-05-29 | 格伦德福斯管理联合股份公司 | Method for controlling an asynchronous motor |
-
2005
- 2005-08-22 CN CN 200510014805 patent/CN1921285A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101772883B (en) * | 2007-08-02 | 2013-05-29 | 格伦德福斯管理联合股份公司 | Method for controlling an asynchronous motor |
| CN101635547B (en) * | 2009-08-21 | 2011-04-13 | 常熟市天银机电股份有限公司 | Single-phase electric motor power consumption-free starter combined with overloading protector |
| CN102006002A (en) * | 2010-11-03 | 2011-04-06 | 苏州合欣美电子科技有限公司 | Drive circuit of alternating current fan |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |