CN207460035U - A kind of double value capacitor asynchronous motor low pressure operation power-assisted start-up circuit - Google Patents
A kind of double value capacitor asynchronous motor low pressure operation power-assisted start-up circuit Download PDFInfo
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- CN207460035U CN207460035U CN201721582278.XU CN201721582278U CN207460035U CN 207460035 U CN207460035 U CN 207460035U CN 201721582278 U CN201721582278 U CN 201721582278U CN 207460035 U CN207460035 U CN 207460035U
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- motor
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- value capacitor
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Abstract
The utility model provides a kind of double value capacitor asynchronous motor low pressure operation power-assisted start-up circuit, belongs to electronic circuit technology field.It solves existing motor when input voltage is less than 185V, will generate and operates disconnected speed, makes the problem of electric current increase is so as to burn out motor.This double value capacitor asynchronous motor low pressure operation power-assisted start-up circuit, including main winding, auxiliary winding, microcontroller and control circuit, control circuit includes the operation capacitance C1 direct-connected with microcontroller, the output terminal of main winding is connected with compensating electric capacity C2 by switching J1, when supply voltage is less than 185V, compensating electric capacity C2 puts into operation, compensate auxiliary winding electric current, improve operation torque, start-up capacitance C3 is connected with by normally closed switch J2, motor is started by start-up capacitance C3, J2 is normally closed switch, and J2 is disconnected after motor start-up.The utility model has the advantages that make motor normal operation in the case of low pressure.
Description
Technical field
The utility model belongs to electronic circuit technology field, is related to a kind of power-assisted start-up circuit, more particularly to a kind of diadic
Capacitance asynchronous motor low pressure operation power-assisted start-up circuit.
Background technology
The rotating excitation field and the relative motion of rotor windings that asynchronous motor is generated by stator, rotor windings cutting magnetic induction
Line generates induced electromotive force, so that generating sensing electric current in rotor windings.Sensing electric current and magnetic fields in rotor windings,
Electromagnetic torque is generated, rotates rotor.In real work, since input voltage is unstable, power input voltage is easy to cause
Less than rated voltage, when input voltage is less than 185V, motor, which will generate, operates disconnected speed, and electric current increase is made to burn out electricity
Machine.
The content of the invention
The purpose of this utility model is for the above-mentioned problems in the prior art, and motor can be made by providing one kind
The double value capacitor asynchronous motor low pressure operation power-assisted start-up circuit of normal operation in the case of low pressure.
The purpose of this utility model can be realized by following technical proposal：A kind of double value capacitor asynchronous motor low pressure fortune
Row power-assisted start-up circuit, including main winding, auxiliary winding, microcontroller and control circuit, which is characterized in that the control circuit bag
The operation capacitance C1 direct-connected with microcontroller is included, the output terminal of the main winding is connected with compensating electric capacity C2, power supply by switching J1
When voltage is less than 185V, compensating electric capacity C2 puts into operation, compensates auxiliary winding electric current, improves operation torque, passes through normally closed switch J2
Start-up capacitance C3 is connected with, motor is started by start-up capacitance C3, J2 is normally closed switch, and J2 is disconnected after motor start-up.
The principle of this double value capacitor asynchronous motor low pressure operation power-assisted start-up circuit is：Electric moter voltage for rated value ±
When 15%, motor is quite such as the method for operation of double value capacitor asynchronous motor；When supply voltage is less than rated voltage 15%（≤
185V）, capacitance C1 puts into operation, compensates auxiliary winding electric current, improves operation torque.
C1 is operation capacitance；C2 is compensating electric capacity, puts into operation when voltage is less than 185V and improves low pressure torque；C3 is to open
Dynamic condenser is disconnected in the 75-80% of synchronous rotational speed.
This circuit can press to be remained under more low-voltage, is unlikely to generate the disconnected fast high current of operating and burn motor.
Compared with prior art, this double value capacitor asynchronous motor low pressure operation power-assisted start-up circuit, which has, makes motor exist
In the case of low pressure the advantages of normal operation.
Description of the drawings
Fig. 1 is the functional block diagram of this circuit.
Specific embodiment
It is specific embodiment of the utility model and with reference to attached drawing below, the technical solution of the utility model is made further
Description, but the utility model is not limited to these embodiments.
As shown in Figure 1, this double value capacitor asynchronous motor low pressure operation power-assisted start-up circuit, including main winding, auxiliary winding,
Microcontroller and control circuit, control circuit include the operation capacitance C1 direct-connected with microcontroller, and the output terminal of main winding passes through switch
J1 is connected with compensating electric capacity C2, and when supply voltage is less than 185V, compensating electric capacity C2 puts into operation, compensates auxiliary winding electric current, improves
Torque is run, start-up capacitance C3 is connected with by normally closed switch J2, motor is started by start-up capacitance C3, J2 is normally closed opens
It closes, J2 is disconnected after motor start-up.
The specific embodiments described herein are merely examples of the spirit of the present invention.The utility model institute
Described specific embodiment can be done various modifications or additions or using similar by belonging to those skilled in the art
Mode substitute, but without departing from the spirit of the present application or beyond the scope of the appended claims.
Claims (1)
1. a kind of double value capacitor asynchronous motor low pressure operation power-assisted start-up circuit, including main winding, auxiliary winding, microcontroller and control
Circuit processed, which is characterized in that the control circuit includes the operation capacitance C1 direct-connected with microcontroller, the output of the main winding
End is connected with compensating electric capacity C2 by switching J1, and when supply voltage is less than 185V, compensating electric capacity C2 puts into operation, compensates auxiliary winding
Electric current, improves operation torque, start-up capacitance C3 is connected with by normally closed switch J2, starts motor, J2 by start-up capacitance C3
It is normally closed switch, J2 is disconnected after motor start-up.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721582278.XU CN207460035U (en) | 2017-11-23 | 2017-11-23 | A kind of double value capacitor asynchronous motor low pressure operation power-assisted start-up circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721582278.XU CN207460035U (en) | 2017-11-23 | 2017-11-23 | A kind of double value capacitor asynchronous motor low pressure operation power-assisted start-up circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207460035U true CN207460035U (en) | 2018-06-05 |
Family
ID=62278207
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721582278.XU Active CN207460035U (en) | 2017-11-23 | 2017-11-23 | A kind of double value capacitor asynchronous motor low pressure operation power-assisted start-up circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207460035U (en) |
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2017
- 2017-11-23 CN CN201721582278.XU patent/CN207460035U/en active Active
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