CN102324889A - Speed regulation circuit for alternating current motor - Google Patents
Speed regulation circuit for alternating current motor Download PDFInfo
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- CN102324889A CN102324889A CN201110301078A CN201110301078A CN102324889A CN 102324889 A CN102324889 A CN 102324889A CN 201110301078 A CN201110301078 A CN 201110301078A CN 201110301078 A CN201110301078 A CN 201110301078A CN 102324889 A CN102324889 A CN 102324889A
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- alternating current
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Abstract
The invention discloses a speed regulation circuit for an alternating current motor. The circuit comprises the alternating current motor, silicon controlled rectifier, a sampling resistor, an overload protection module, a motor rotating speed regulation module, a control chip and a direct current power module, wherein the alternating current motor, the silicon controlled rectifier and the sampling resistor are sequentially connected in series; the overload protection module, the motor rotating speed regulation module, the sampling resistor and the silicon controlled rectifier are all electrically connected to the control chip; and the direct current power module is electrically connected together with the control chip. The speed regulation circuit fulfills the aims of low cost and stable and reliable performance.
Description
Technical field
The present invention relates to the electric machine speed regulation field, particularly, relate to a kind of speed regualtion of AC motor circuit.
Background technology
Existing speed regualtion of AC motor mode adopts the frequency changer circuit speed governing, through the velocity of rotation of frequency converter adjustment motor, adopts the cost of frequency control higher; Also can adopt discrete component to form alignment circuit, adopt the alignment circuit speed stability of this structure poor.
Summary of the invention
The objective of the invention is to,, propose a kind of speed regualtion of AC motor circuit, to realize cost advantage low, stable and reliable for performance to the problems referred to above.
For realizing above-mentioned purpose, the technical scheme that the present invention adopts is:
A kind of speed regualtion of AC motor circuit; Comprise alternating current machine, controllable silicon, sample resistance, overload protection module, motor speed adjusting module, control chip and DC power supplier; Said alternating current machine, controllable silicon and sample resistance are cascaded successively; Said overload protection module, motor speed adjusting module, sample resistance and controllable silicon all are connected electrically on the control chip, and said DC power supplier and control chip are electrically connected.
Further, said controllable silicon adopts bidirectional triode thyristor.
Further, said DC power supplier is that resistance R 1, diode D1 and capacitor C 1 are connected successively.
Further, said motor speed adjusting module is that resistance R 12, adjustable resistance RP1, adjustable resistance RP2 and resistance R 11 are connected successively, is parallel with resistance R 10 between the adjustable end of said adjustable resistance RP1 and adjustable resistance RP2.
Further, said overload protection module is that resistance R 8 is connected in parallel with capacitor C 5.
Further, said control chip adopts the U2010B integrated package.
Further, be electrically connected with capacitor C 2 on the 7th pin of said control chip.
Further, said sample resistance R6 is a constantan wire.
The disclosed speed regualtion of AC motor circuit of technical scheme of the present invention adopts the integrated control chip with soft start; And overload protection module and motor speed adjusting module be set, because of adopting integrated chip, make the motor speed control circuit designs simplification; Stable and reliable for performance, and system cost is lower.
Other features and advantages of the present invention will be set forth in specification subsequently, and, partly from specification, become obvious, perhaps understand through embodiment of the present invention.The object of the invention can be realized through the structure that in the specification of being write, claims and accompanying drawing, is particularly pointed out and obtained with other advantages.
Through accompanying drawing and embodiment, technical scheme of the present invention is done further detailed description below.
Description of drawings
Accompanying drawing is used to provide further understanding of the present invention, and constitutes the part of specification, is used to explain the present invention with embodiments of the invention, is not construed as limiting the invention.In the accompanying drawings:
Fig. 1 is the fundamental diagram of the described speed regualtion of AC motor circuit of the embodiment of the invention;
Fig. 2 is the electrical schematic diagram of the described speed regualtion of AC motor circuit of the embodiment of the invention.
Embodiment
Below in conjunction with accompanying drawing the preferred embodiments of the present invention are described, should be appreciated that preferred embodiment described herein only is used for explanation and explains the present invention, and be not used in qualification the present invention.
As shown in Figure 1; The invention discloses a kind of speed regualtion of AC motor circuit; Comprise alternating current machine, controllable silicon, sample resistance, overload protection module, motor speed adjusting module, control chip and DC power supplier; Alternating current machine, controllable silicon and sample resistance are cascaded successively; Overload protection module, motor speed adjusting module, sample resistance and controllable silicon all are connected on the control chip through lead, and DC power supplier and control chip link together through lead, for control chip provides DC power supply.
Series circuit as shown in Figure 2, that alternating current motor, controllable silicon SCR and sample resistance R6 form, the angle of flow of SCR, decision rotating speed of motor are extremely controlled in the control that trigger impulse is connected to SCR by 16 pin of control chip U1.R6 detects the size of load current, and the control action through control chip U1 realizes the stable of rotating speed.The speed that the ramp voltage of 3 pin of R7 and C3 decision U1 is set up, and with the voltage ratio of the 4 pin minimum angle of flow of back control SCR, the minimum speed of decision motor.R10, R11, R12 and RP1, RP2 constitute the motor speed adjusting module, and potentiometer RP1 can change the voltage of 4 pin of U1, and the angle of flow of SCR is changed, and carry out the speed governing of motor in certain limit.The then fine-tuning rotating speed of motor of RP2, R10 rationally chooses and can realize the linear change of motor speed in certain limit, realizes even speed governing.R6 detects the size of load current, and is converted into 1 and 2 pin that voltage is added to U1, after U1 handles, can regulate the voltage of stablizing motor automatically, thereby rotating speed can not changed along with the variation of load, keeps the stable of rotating speed.C2 receives 7 pin of U1, in order to the speed of control soft start, with the impulse current of avoiding the motor full voltage starting to bring, prevents that motor from starting the infringement that causes suddenly.R8 and C5 are used to set up overload protection voltage as the overload protection module, and when current of electric is increased to the protection set point, U1 can cut off silicon controlled output automatically, thereby the protection motor avoids dangerous.R2 introduces U1 with main power source, through the builtin voltage wave detector, realizes the synchronous of main power source and trigger impulse; Simultaneously, inner rectification circuit can be realized the main power source compensate function according to main power source fluctuation adjustment silicon controlled output automatically.The DC power supply that control chip U1 is required, the DC power supplier of being made up of R1, D1 and C1 provides.Wherein control chip adopts the U2010B integrated package, and sample resistance R6 is a constantan wire, and controllable silicon SCR adopts bidirectional triode thyristor.
What should explain at last is: the above is merely the preferred embodiments of the present invention; Be not limited to the present invention; Although the present invention has been carried out detailed explanation with reference to previous embodiment; For a person skilled in the art, it still can be made amendment to the technical scheme that aforementioned each embodiment put down in writing, and perhaps part technical characterictic wherein is equal to replacement.All within spirit of the present invention and principle, any modification of being done, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (8)
1. speed regualtion of AC motor circuit; It is characterized in that; Comprise alternating current machine, controllable silicon, sample resistance, overload protection module, motor speed adjusting module, control chip and DC power supplier; Said alternating current machine, controllable silicon and sample resistance are cascaded successively, and said overload protection module, motor speed adjusting module, sample resistance and controllable silicon all are connected electrically on the control chip, and said DC power supplier and control chip are electrically connected.
2. speed regualtion of AC motor circuit according to claim 1 is characterized in that, said controllable silicon adopts bidirectional triode thyristor.
3. speed regualtion of AC motor circuit according to claim 1 is characterized in that, said DC power supplier is that resistance R 1, diode D1 and capacitor C 1 are connected successively.
4. speed regualtion of AC motor circuit according to claim 1; It is characterized in that; Said motor speed adjusting module is that resistance R 12, adjustable resistance RP1, adjustable resistance RP2 and resistance R 11 are connected successively, is parallel with resistance R 10 between the adjustable end of said adjustable resistance RP1 and adjustable resistance RP2.
5. speed regualtion of AC motor circuit according to claim 1 is characterized in that, said overload protection module is that resistance R 8 is connected in parallel with capacitor C 5.
6. speed regualtion of AC motor circuit according to claim 1 is characterized in that, said control chip adopts the U2010B integrated package.
7. according to claim 1 or 6 described speed regualtion of AC motor circuit, it is characterized in that, be electrically connected with capacitor C 2 on the 7th pin of said control chip.
8. speed regualtion of AC motor circuit according to claim 1 is characterized in that, said sample resistance R6 is a constantan wire.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110301078A CN102324889A (en) | 2011-09-30 | 2011-09-30 | Speed regulation circuit for alternating current motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110301078A CN102324889A (en) | 2011-09-30 | 2011-09-30 | Speed regulation circuit for alternating current motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102324889A true CN102324889A (en) | 2012-01-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110301078A Pending CN102324889A (en) | 2011-09-30 | 2011-09-30 | Speed regulation circuit for alternating current motor |
Country Status (1)
| Country | Link |
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| CN (1) | CN102324889A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108121373A (en) * | 2017-12-22 | 2018-06-05 | 广东新宝电器股份有限公司 | A kind of alignment circuit of eggbeater, speed regulating method and eggbeater |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2602532Y (en) * | 2002-05-31 | 2004-02-04 | 冉启明 | Controller for AC motor |
| CN101300731A (en) * | 2005-11-01 | 2008-11-05 | 丰田自动车株式会社 | Motor driving device |
-
2011
- 2011-09-30 CN CN201110301078A patent/CN102324889A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2602532Y (en) * | 2002-05-31 | 2004-02-04 | 冉启明 | Controller for AC motor |
| CN101300731A (en) * | 2005-11-01 | 2008-11-05 | 丰田自动车株式会社 | Motor driving device |
Non-Patent Citations (1)
| Title |
|---|
| ATMEL: "Phase-control IC with current feedback and overload protection U2010B", 《WWW.ATMEL.COM/DEVICES/U2010B.ASPX》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108121373A (en) * | 2017-12-22 | 2018-06-05 | 广东新宝电器股份有限公司 | A kind of alignment circuit of eggbeater, speed regulating method and eggbeater |
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Application publication date: 20120118 |