CN103647256A - Motor control method, device and system - Google Patents
Motor control method, device and system Download PDFInfo
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- CN103647256A CN103647256A CN201310643310.0A CN201310643310A CN103647256A CN 103647256 A CN103647256 A CN 103647256A CN 201310643310 A CN201310643310 A CN 201310643310A CN 103647256 A CN103647256 A CN 103647256A
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- motor
- protecting device
- contact
- restarting
- described motor
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- 238000000034 method Methods 0.000 title claims abstract description 23
- 230000006837 decompression Effects 0.000 claims description 25
- 230000005611 electricity Effects 0.000 claims description 15
- 239000000853 adhesive Substances 0.000 description 5
- 230000001070 adhesive effect Effects 0.000 description 5
- 238000010586 diagram Methods 0.000 description 2
- 238000005096 rolling process Methods 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 1
- 238000004590 computer program Methods 0.000 description 1
- APTZNLHMIGJTEW-UHFFFAOYSA-N pyraflufen-ethyl Chemical compound C1=C(Cl)C(OCC(=O)OCC)=CC(C=2C(=C(OC(F)F)N(C)N=2)Cl)=C1F APTZNLHMIGJTEW-UHFFFAOYSA-N 0.000 description 1
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Abstract
The invention discloses a motor control method, device and system. The method comprises receiving a motor voltage-loss restart function starting signal; based on the received motor voltage-loss restart function starting signal, closing restarting contact points of a motor protection device; and under the condition that a voltage is unrecovered within a predetermined time after a motor losses power, opening the restarting contact points of the motor protection device. According to the method, the restarting contact points of the motor protection device, after receiving the motor voltage-loss restart function starting signal, are closed, so that when the case of electric-dazzling occurs or a contactor has tripped, the contactor can be pulled to close as long as the voltage returns to a predetermined value (such as 90% of a nominal voltage) within the predetermined time, the motor can be restarted, comprehensive protection can be offered to the motor, and the operation reliability of the motor is improved.
Description
Technical field
The present invention relates to Motor Control field, particularly, relate to a kind of method of motor control, a kind of electric motor control device and a kind of motor control system.
Background technology
The electrical network causing due to reasons such as thunderbolt, short circuits in the short time phenomenon of voltage fluctuation or short point be called " shake electricity " phenomenon, " shake electricity " phenomenon can cause contactor thread off (or being called tripping) and cause motor and shut down, and now generally need to restart motor.For " shaking electric " phenomenon; designed and possessed the motor protecting device that decompression is restarted defencive function; occurring after " shake electricity " phenomenon (when motor protecting device is set in voltage drop to 10% left and right of rated voltage conventionally for occurring " shake electricity " phenomenon); motor protecting device can send the pulse command that decompression is restarted when judgement voltage has recovered; this instruction is moved the contact (for impulse contact) of restarting of motor protecting device; thereby make contactor adhesive, restart motor.
But, due to above-mentioned motor protecting device of the prior art only voltage drop to rated voltage 10% time just can open decompression and restart protection action, therefore when voltage drop arrives 60% left and right of rated voltage, motor protecting device can not send the pulse command that decompression is restarted, but in fact the contactor in motor start-up loop has been threaded off and has been made motor out of service, even if therefore recover after voltage in this case, because the contact of restarting of motor protecting device does not move because not receiving instruction, cause the contactor also can adhesive, cause motor not restart.
Summary of the invention
For the above-mentioned problems in the prior art, the invention provides a kind of method of motor control, the method comprises: receive motor decompression and restart function on signal; According to the motor decompression receiving, restart function on signal, closed motor protecting device restart contact; And in the given time after described motor dead electricity in the unrecovered situation of voltage, disconnect the contact of restarting of motor protecting device.
Correspondingly, the present invention also provides a kind of electric motor control device, and this equipment comprises: receiving system, for receiving motor decompression, restart function on signal; Control device, for restarting the contact of restarting of function on signal closes motor protecting device according to the motor decompression receiving; And for disconnecting the contact of restarting of motor protecting device in the unrecovered situation of voltage after described motor dead electricity in the given time.
In addition, the present invention also provides a kind of motor control system, and this system comprises: motor; And electric motor control device provided by the present invention, wherein said electronic control appliance is connected with described motor, to carry out corresponding Motor Control operation.
Adopt method of motor control provided by the invention, equipment and system; in appearance " rolling electricity " phenomenon or when contactor is threaded off; due to motor protecting device to restart contact closed after receiving motor decompression to restart function on signal; for example make, as long as when voltage returns to predetermined value (90% of rated voltage), contactor just can adhesive in the given time; motor is restarted; thereby for motor provides comprehensive protection, control, guaranteed motor reliability of operation.
Other features and advantages of the present invention partly in detail are described the embodiment subsequently.
Accompanying drawing explanation
Accompanying drawing is to be used to provide a further understanding of the present invention, and forms a part for specification, is used from explanation the present invention, but is not construed as limiting the invention with embodiment one below.In the accompanying drawings:
Fig. 1 is according to the structural representation of the electric motor control device of one embodiment of the present invention; And
Fig. 2 is according to the schematic flow diagram of the method for motor control of one embodiment of the present invention.
Description of reference numerals
100 receiving system 200 control device
Embodiment
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is elaborated.Should be understood that, embodiment described herein only, for description and interpretation the present invention, is not limited to the present invention.
Fig. 1 is according to the structural representation of the electric motor control device of one embodiment of the present invention.As shown in Figure 1, this electric motor control device can comprise: receiving system 100, for receiving motor decompression, restart function on signal; Control device 200, for restarting the contact of restarting of function on signal closes motor protecting device according to the motor decompression receiving; And for disconnecting the contact of restarting of motor protecting device in the unrecovered situation of voltage after described motor dead electricity in the given time.
Specifically, receiving system 100 can receive motor decompression and restart function on signal, and such as this motor decompression, restarting function on signal can be the signal that high level or low level etc. have indicative function.Control device 200 can be restarted the contact of restarting of the closed motor protecting device of function on signal (such as high level etc.) according to the motor decompression receiving, with actuating motor decompression, restart function.Adopt this execution mode, after there is " shaking electric " phenomenon, as long as meet the condition that decompression is restarted, just can restart motor.In addition; even when 60% left and right (or other values) of voltage drop to rated voltage; when contactor has been threaded off; due to motor protecting device to restart contact closed; for example make, as long as when voltage returns to predetermined value (90% of rated voltage), contactor just can adhesive in the given time; motor is restarted, thereby control for motor provides comprehensive protection, guaranteed motor reliability of operation.
Simultaneously; consider non-" shaking electric " phenomenon (such as situations such as power failures); for guarantee safety prevent from sending a telegram here after motor start suddenly; control device 200 disconnects the contact of restarting of motor protecting device in the given time after described motor dead electricity in the unrecovered situation of voltage, so that motor can not be restarted.Wherein, the scope of the described scheduled time is 10-15 second (this scheduled time can rationally arrange or suitably adjust according to actual condition); and control device 200 can pre-stored this scheduled time or is received from motor protecting device, and the present invention does not limit this.
According to one embodiment of the present invention, the present invention has also considered the failure condition that may occur in actual condition (situations such as system short-circuit, ground connection), to improve the fail safe of whole system.For example, receiving system 100 can also for receive motor fault signal under the state of restarting junction closure of described motor protecting device, for example, receive (for example, the protection action connection point of motor protecting device action) from motor protecting device; And control device 200 is also for disconnect the scram contact of restarting contact and disconnecting motor protecting device of described motor protecting device according to the motor fault signal receiving, so that motor can be out of service in time when fault; And in the situation that described motor fault is eliminated the scram contact of restarting contact and described motor protecting device of closed described motor protecting device, with described motor, resume operation.Adopt this execution mode; can be when realizing motor decompression and restarting function; when there is motor fault, also can control the scram contact of motor protecting device and restart contact disconnection makes motor out of service; pending fault again can be again closed to recover its operation, the fail safe that has improved whole electric motor system after eliminating.
Correspondingly, the present invention also provides a kind of method of motor control.Fig. 2 is according to the schematic flow diagram of the method for motor control of one embodiment of the present invention.As shown in Figure 2, this method of motor control can be with the form of computer program the existing control unit (controller or control appliance) in motor control system implement or above-mentioned electric motor control device provided by the invention is implemented, specifically control step as follows:
In step 1001, receive motor decompression and restart function on signal;
In step 1002, according to the motor decompression receiving, restart function on signal, closed motor protecting device restart contact;
In step 1003, judgement in the given time after described motor dead electricity voltage whether recover;
In step 1004, after described motor dead electricity in the unrecovered situation of voltage, disconnect the contact of restarting of motor protecting device in the given time; And
In step 1005, in the situation that after described motor dead electricity, voltage recovers in the given time, keep the junction closure of restarting of motor protecting device.
Preferably, the scope of the described scheduled time is 10-15 second.
In addition, the method also comprises: under the state of restarting junction closure of described motor protecting device, receive motor fault signal; According to the motor fault signal receiving, disconnect the scram contact of restarting contact and disconnecting motor protecting device of described motor protecting device, so that described motor is out of service; And in the situation that described motor fault is eliminated, the scram contact of restarting contact and described motor protecting device of closed described motor protecting device, resumes operation with described motor.
Motor decompression in said method step is restarted the reception of function on signal, motor fault signal, the scheduled time etc., the execution mode that arranges etc. as mentioned above, does not repeat them here.
Correspondingly, a kind of motor control system provided by the invention, this motor control system comprises: the electric motor control device that above-mentioned execution mode provides according to the present invention and motor, wherein said electric motor control device is connected with motor, to carry out corresponding Motor Control operation.And this system not only can comprise the electric motor control device according to embodiment of the present invention as mentioned above, and this system also can adopt above-mentioned method of motor control to carry out correspondingly Motor Control operation.
Adopt method of motor control provided by the invention, equipment and system; in appearance " rolling electricity " phenomenon or when contactor is threaded off; due to motor protecting device to restart contact closed after receiving motor decompression to restart function on signal; for example make, as long as when voltage returns to predetermined value (90% of rated voltage), contactor just can adhesive in time predefined; motor is restarted; thereby for motor provides comprehensive protection, control, guaranteed motor reliability of operation.
Should be understood that, those skilled in the art can be by method of motor control provided by the invention, equipment and system applies in any suitable controling environment, such as air preheater, steam feed pump oil pump, regulation oil pump control etc., with the safety and reliability of raising equipment operation.
Below describe by reference to the accompanying drawings the preferred embodiment of the present invention in detail; but; the present invention is not limited to the detail in above-mentioned execution mode; within the scope of technical conceive of the present invention; can carry out multiple simple variant to technical scheme of the present invention, these simple variant all belong to protection scope of the present invention.
It should be noted that in addition, each concrete technical characterictic described in above-mentioned embodiment, in reconcilable situation, can combine by any suitable mode, for fear of unnecessary repetition, the present invention is to the explanation no longer separately of various possible compound modes.
In addition, between various execution mode of the present invention, also can carry out combination in any, as long as it is without prejudice to thought of the present invention, it should be considered as content disclosed in this invention equally.
Claims (7)
1. a method of motor control, the method comprises:
Receive motor decompression and restart function on signal;
According to the motor decompression receiving, restart function on signal, closed motor protecting device restart contact; And
After described motor dead electricity in the unrecovered situation of voltage, disconnect the contact of restarting of motor protecting device in the given time.
2. method according to claim 1, the scope of the wherein said scheduled time is 10-15 second.
3. method according to claim 1, the method also comprises:
Under the state of restarting junction closure of described motor protecting device, receive motor fault signal;
According to the motor fault signal receiving, disconnect the scram contact of restarting contact and disconnecting motor protecting device of described motor protecting device, so that described motor is out of service; And
In the situation that described motor fault is eliminated, the scram contact of restarting contact and described motor protecting device of closed described motor protecting device, resumes operation with described motor.
4. an electric motor control device, this equipment comprises:
Receiving system, restarts function on signal for receiving motor decompression;
Control device; for restart the contact of restarting of function on signal closes motor protecting device according to the motor decompression that receives, and for disconnecting the contact of restarting of motor protecting device in the unrecovered situation of voltage after described motor dead electricity in the given time.
5. equipment according to claim 4, the scope that the wherein said scheduled time is is 10-15 second.
6. equipment according to claim 4, wherein said receiving system also for receiving motor fault signal under the state of restarting junction closure of described motor protecting device; And
Described control device also for: according to the motor fault signal receiving, disconnect the scram contact of restarting contact and disconnecting motor protecting device of described motor protecting device, so that described motor is out of service; And in the situation that described motor fault is eliminated the scram contact of restarting contact and described motor protecting device of closed described motor protecting device, with described motor, resume operation.
7. a motor control system, this system comprises:
Motor; And
According to the electric motor control device described in any one in claim 4-6, wherein said electronic control appliance is connected with described motor, to carry out corresponding Motor Control operation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310643310.0A CN103647256B (en) | 2013-12-03 | 2013-12-03 | Method of motor control, equipment and system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310643310.0A CN103647256B (en) | 2013-12-03 | 2013-12-03 | Method of motor control, equipment and system |
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| Publication Number | Publication Date |
|---|---|
| CN103647256A true CN103647256A (en) | 2014-03-19 |
| CN103647256B CN103647256B (en) | 2016-07-27 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310643310.0A Active CN103647256B (en) | 2013-12-03 | 2013-12-03 | Method of motor control, equipment and system |
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| CN (1) | CN103647256B (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2527031Y (en) * | 2002-02-09 | 2002-12-18 | 天津石油化工公司机械研究所 | Self-starter for low-voltage motor |
| CN202564918U (en) * | 2012-05-03 | 2012-11-28 | 孙长江 | Suspended shock-proof electric device |
| CN202586830U (en) * | 2012-03-27 | 2012-12-05 | 杭州华光电气有限公司 | Automatic start controller for motor |
| CN202917938U (en) * | 2012-10-12 | 2013-05-01 | 甘肃酒钢集团宏兴钢铁股份有限公司 | An anti-shake system |
-
2013
- 2013-12-03 CN CN201310643310.0A patent/CN103647256B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2527031Y (en) * | 2002-02-09 | 2002-12-18 | 天津石油化工公司机械研究所 | Self-starter for low-voltage motor |
| CN202586830U (en) * | 2012-03-27 | 2012-12-05 | 杭州华光电气有限公司 | Automatic start controller for motor |
| CN202564918U (en) * | 2012-05-03 | 2012-11-28 | 孙长江 | Suspended shock-proof electric device |
| CN202917938U (en) * | 2012-10-12 | 2013-05-01 | 甘肃酒钢集团宏兴钢铁股份有限公司 | An anti-shake system |
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| Publication number | Publication date |
|---|---|
| CN103647256B (en) | 2016-07-27 |
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