CN201430561Y - Electricity saver for light-load and heavy-load automatic switching of motor - Google Patents
Electricity saver for light-load and heavy-load automatic switching of motor Download PDFInfo
- Publication number
- CN201430561Y CN201430561Y CN2009200214823U CN200920021482U CN201430561Y CN 201430561 Y CN201430561 Y CN 201430561Y CN 2009200214823 U CN2009200214823 U CN 2009200214823U CN 200920021482 U CN200920021482 U CN 200920021482U CN 201430561 Y CN201430561 Y CN 201430561Y
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- relay
- circuit
- load
- delay circuit
- switching tube
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- Motor And Converter Starters (AREA)
Abstract
The utility model relates to an electricity saver for light-load and heavy-load automatic switching of a motor. The technical scheme is that the electricity saver mainly comprises a control signal detection circuit, a mono stable time delay circuit and an output circuit, the control signal detection circuit is mainly formed by a current transformer, a diode, a resistor, a capacitor, a potentiometer and a switching tube in an electrically connecting way, the secondary induction circuit of the current transformer is connected with the base of the switching tube through the diode and the potentiometer, the collector of the switching tube is connected with the mono stable time delay circuit, the mono stable time delay circuit is connected with a relay through a light emitting diode, the normally-closed contact of the relay is connected with a Cy star contactor, and the normally-open contact of the relay is closed and is connected with a C delta delta contactor. The utility model has the advantages that the structure principle is simple, the number of the used components is small, the cost is low, the signal regulation range is wide and the motor operation is stable; and the electricitysaver avoids the defect that the motor operation is unstable because of the frequent switching of the star contactor and the delta contactor and the frequent action of the relay caused by the frequent load switching or the instant impact of the interference signal.
Description
One, technical field:
The utility model relates to a kind of motor start-up circuit, and particularly a kind of motor weight carries the automatic switchover electricity-saving appliance.
Two, background technology:
Threephase asynchronous can produce very big starting current (selecting 6 times of rated current usually calculates) in starting process.Produce bigger pressure drop for fear of electrical network, require the starting current can not be too big, wish to produce enough big detent torque simultaneously.In order to reduce voltage, reduce electric current, multiple reduced-voltage starting circuit also just arises at the historic moment in we produce.And in numerous reduced-voltage starting circuit, star---triangle (Y/ △) start be the most common also be the most frequently used a kind of reduced-voltage starting circuit.When Y/ △ reduced-voltage starting circuit is meant motor start-up, stator winding is connected into star,, reaches the purpose that reduces starting current to reduce starting resistor; After treating motor start-up,, make the operation of motor total head again stator winding reconfiguration triangularity.And the problem that prior art exists is: because the moment impact of frequent change of load or interference signal makes star---triangle switches frequent, relay frequent movement, machine operation instability.
Three, summary of the invention:
The purpose of this utility model is exactly the above-mentioned defective that exists at prior art, provide a kind of motor weight to carry the automatic switchover electricity-saving appliance, avoided making star because of the moment impact of load frequent change or interference signal---triangle switches frequent, and the relay J frequent movement makes the unsettled drawback of machine operation.
Its technical scheme is: mainly be made up of control signal testing circuit, single stabilization delay circuit and output loop, described control signal testing circuit mainly is electrically connected by current transformer, diode, resistance, electric capacity, potentiometer, switching tube to be formed, the secondary induction circuit of current transformer connects the base stage of switching tube by diode, potentiometer, the collector electrode of switching tube connects single stabilization delay circuit, described single stabilization delay circuit connects relay by light-emitting diode, the normally closed contact of relay is connected the star contactor, the closed delta contactor of connecting of normal opened contact.
Above-mentioned single stabilization delay circuit adopts 555 single stabilization delay circuits.
The beneficial effects of the utility model are: this circuit structure principle is simple, uses original paper few, and cost is low, the Signal Regulation wide ranges, and motor operates steadily, and can be applicable to more occasion; Avoided making star because of the moment impact of load frequent change or interference signal---triangle switches frequent, and the relay frequent movement makes the unsettled drawback of machine operation.
Four, description of drawings:
Accompanying drawing 1 is a circuit connection diagram of the present utility model.
Five, embodiment:
In conjunction with the accompanying drawings 1, the utility model will be further described:
The utility model is made up of control signal testing circuit, 555 single stabilization delay circuits and output loop, as shown in the figure, current transformer LH, diode D6, resistance R 1, capacitor C 3, potentiometer W1, switching tube BG1 form the control signal testing circuit, the LH secondary induction goes out the voltage that is in proportion with motor current, through rectification, filtering, add to switching tube BG1.Regulate R1 and W1, make the unlikely BG1 conducting of the current potential of base stage under the motor light condition of BG1,555 single stabilization delay circuits are operated in stable state, and relay J is failure to actuate, and its normally closed contact is connected the CY star all the time and connect contactor, and motor moves under the star state.When motor load increases, the LH secondary induction goes out electric current and increases thereupon, the base potential of BG1 also increases the conducting until BG1,555 single stabilization delay circuit pin twos are in low level after the BG1 conducting, and this moment, 555 single stabilization delay circuits were operated in temporary stable state, pin 3 output high level, relay J is moved immediately, its contact is changed normally closed disconnection, and the closed C △ triangle of connecting of normal opened contact connects contactor, so just total head operation under the triangle state of motor.As long as BG1 is in then just total head operation under the triangle state all the time of motor of conducting state, when load in service reduces, the LH secondary induction goes out electric current and reduces thereupon, the base potential of BG1 also reduces until BG1 ends, after BG1 ended, pin 3 just can become low level by high level after second through 1.1 * R2 * C7 for 555 single stabilization delay circuits, and relay J just can be returned, so motor is got back to star again and is connect under the state and moved, and reaches the purpose of saves energy under the underloading with this.The parameter that wherein changes R2 and C7 can obtain different motor weights and carry down star---triangle switching time, advantage is to have avoided making star because of the moment impact of load frequent change or interference signal---triangle switches frequent, the unsettled drawback of relay J frequent movement machine operation.
Claims (2)
1, a kind of motor weight carries the automatic switchover electricity-saving appliance, it is characterized in that: mainly by the control signal testing circuit, single stabilization delay circuit and output loop are formed, described control signal testing circuit is mainly by current transformer (LH), diode (D6), resistance (R1), electric capacity (C3), potentiometer (W1), switching tube (BG1) is electrically connected to be formed, the secondary induction circuit of current transformer (LH) is by diode (D6), potentiometer (W1) connects the base stage of switching tube (BG1), the collector electrode of switching tube (BG1) connects single stabilization delay circuit, described single stabilization delay circuit connects relay (J) by light-emitting diode (LED), and the normally closed contact of relay (J) is connected star contactor (C
Y), the closed delta contactor (C that connects of normal opened contact
Δ).
2, motor weight according to claim 1 carries the automatic switchover electricity-saving appliance, it is characterized in that: described single stabilization delay circuit adopts 555 single stabilization delay circuits.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200214823U CN201430561Y (en) | 2009-04-22 | 2009-04-22 | Electricity saver for light-load and heavy-load automatic switching of motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200214823U CN201430561Y (en) | 2009-04-22 | 2009-04-22 | Electricity saver for light-load and heavy-load automatic switching of motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201430561Y true CN201430561Y (en) | 2010-03-24 |
Family
ID=42034300
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009200214823U Expired - Fee Related CN201430561Y (en) | 2009-04-22 | 2009-04-22 | Electricity saver for light-load and heavy-load automatic switching of motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201430561Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103715967A (en) * | 2013-03-06 | 2014-04-09 | 任维平 | Ring rolling machine high-efficiency power-saving controller |
| CN107359842A (en) * | 2017-08-22 | 2017-11-17 | 江苏光大电控设备有限公司 | Motor star-delta mode of connection control device |
| CN107612451A (en) * | 2017-10-13 | 2018-01-19 | 广州弘雅服装科技有限公司 | A kind of energy-saving electric power circuit of spinning and weaving workshop |
| CN109672368A (en) * | 2018-12-26 | 2019-04-23 | 廖钧澜 | Frequency sensitive trheostat step-down starting controller |
-
2009
- 2009-04-22 CN CN2009200214823U patent/CN201430561Y/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103715967A (en) * | 2013-03-06 | 2014-04-09 | 任维平 | Ring rolling machine high-efficiency power-saving controller |
| CN107359842A (en) * | 2017-08-22 | 2017-11-17 | 江苏光大电控设备有限公司 | Motor star-delta mode of connection control device |
| CN107612451A (en) * | 2017-10-13 | 2018-01-19 | 广州弘雅服装科技有限公司 | A kind of energy-saving electric power circuit of spinning and weaving workshop |
| CN107612451B (en) * | 2017-10-13 | 2020-04-03 | 湖南大井电源技术有限公司 | Energy-saving power supply circuit for textile workshop |
| CN109672368A (en) * | 2018-12-26 | 2019-04-23 | 廖钧澜 | Frequency sensitive trheostat step-down starting controller |
| CN109672368B (en) * | 2018-12-26 | 2022-04-22 | 廖钧澜 | Voltage-reducing starting control device for frequency-sensitive rheostat |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100324 Termination date: 20100422 |