CN105576610A - Motor failure control method and device - Google Patents
Motor failure control method and device Download PDFInfo
- Publication number
- CN105576610A CN105576610A CN201510976333.2A CN201510976333A CN105576610A CN 105576610 A CN105576610 A CN 105576610A CN 201510976333 A CN201510976333 A CN 201510976333A CN 105576610 A CN105576610 A CN 105576610A
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- China
- Prior art keywords
- motor
- failure control
- motor failure
- normal
- rotating speed
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- Granted
Links
- 238000000034 method Methods 0.000 title claims abstract description 36
- 238000001514 detection method Methods 0.000 claims abstract description 17
- 238000004378 air conditioning Methods 0.000 description 6
- 230000002159 abnormal effect Effects 0.000 description 3
- 230000005856 abnormality Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000009885 systemic effect Effects 0.000 description 2
- 238000006757 chemical reactions by type Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
- H02H7/08—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for dynamo-electric motors
- H02H7/0822—Integrated protection, motor control centres
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P5/00—Arrangements specially adapted for regulating or controlling the speed or torque of two or more electric motors
- H02P5/74—Arrangements specially adapted for regulating or controlling the speed or torque of two or more electric motors controlling two or more ac dynamo-electric motors
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Control Of Motors That Do Not Use Commutators (AREA)
- Control Of Multiple Motors (AREA)
- Control Of Electric Motors In General (AREA)
Abstract
The invention discloses a motor failure control method and device. The motor failure control method comprises: obtaining the current detection signal of a motor; determining whether the motor fails according to the current detection signal; and if the motor fails, maintaining supplying power to a normal motor at the same time of cutting power supply for the failed motor. The motor failure control device can timely detect failure when an alternating current motor fails, timely perform corresponding protection motion to guarantee system continuous normal operation, or timely perform halt protection to timely detect and identify motor failure.
Description
Technical field
The present invention relates to electric motor protecting field, in particular to a kind of motor failure control method and device.
Background technology
In existing air-conditioning technical; alternating current machine adopts the opened loop control without reaction type usually; namely when abnormal (as stall, short circuit, open circuit) appears in motor; control system cannot direct-detection, judge the abnormal conditions of motor; can only judge that machine system occurs by systemic Parameters variation such as Guan Wen abnormal, thus make the coarse countermeasure shut down or do not process.
Therefore, there is following problem in air-conditioning of the prior art in motor abnormality:
(1) because the systemic Parameters variation such as Guan Wen exist intrinsic hysteresis phenomenon; namely motor occurs to lose efficacy to show between exception to system and has a time of delay, therefore there is system when motor abnormality due to cannot starting protection action in time and cause danger.
(2) when bi-motor parallel connection uses, suppose one of them motor failure, originally the system of a period of time can be kept by the method adjusting motor speed to continue normal operation, but cause air-conditioning possibility global failure at once because system cannot take this action.
(3) because system fails reported failures source, to add the burden of problem investigation to air-conditioning maintenance.
Summary of the invention
There is provided in the embodiment of the present invention that a kind of structure is simple, cost is low, motor failure can be detected in time and make motor failure control method and the device of protection.
For achieving the above object, the embodiment of the present invention provides a kind of motor failure control method, comprising: the current detection signal obtaining motor; Motor failure has been judged whether according to current detection signal; If there is motor failure, then, while cut-out inefficacy feeding electric motors, keep powering to normal motor.
As preferably, the method also comprises: judge whether the rotating speed of normal motor is in most high tap position; If the rotating speed of normal motor is in most high tap position, then enable the speedup electric capacity for subsequent use of normal motor.
As preferably, the method also comprises: if the rotating speed of normal motor is in non-most high tap position, then improve the rotating speed gear of normal motor.
As preferably, the method also comprises: if still cannot ensure that system is normally run when the rotating speed gear of normal motor being increased to most high tap position, then start the speedup electric capacity for subsequent use of normal motor.
As preferably, the method also comprises: if there is motor failure, then, while the power supply cutting off inefficacy motor, send warning message.
As preferably, warning message comprises light warning message and/or audible alarm information.
As preferably, audible alarm information comprises and uses buzzer call to carry out reporting to the police and/or directly using showing that the voice that motor breaks down are reported to the police.
As preferably, warning message comprises display failure code and/or directly shows electrical fault.
As preferably, motor failure comprises stall or short circuit or open circuit.
Present invention also offers a kind of motor failure control device, comprising: acquisition module, for obtaining the current detection signal of multiple motor; First judge module, for having judged whether motor failure according to current detection signal; Power supply protection module, for while cut-out inefficacy feeding electric motors, keeps powering to normal motor.
As preferably, motor failure control device also comprises: the second judge module, for judging whether the rotating speed of normal motor is in most high tap position; First speedup electric capacity control module, during for being in most high tap position at the rotating speed of normal motor, enables the speedup electric capacity for subsequent use of normal motor.
As preferably, motor failure control device also comprises: adjustment of rotational speed module, during for being in non-most high tap position at the rotating speed of normal motor, improves the rotating speed gear of normal motor.
As preferably, motor failure control device also comprises: the second speedup electric capacity control module, during for still ensureing that system is normally run when the rotating speed gear of normal motor being increased to most high tap position, starts the speedup electric capacity for subsequent use of normal motor.
As preferably, motor failure control device also comprises: alarm module, for when there being motor failure, while the power supply cutting off inefficacy motor, sends warning message.
The present invention can detect the generation of inefficacy in time when alternating current machine lost efficacy, and makes corresponding protection act in time, thus the system of guarantee can continue normally to work or timely stoppage protection, thus ensure that timely detection to motor failure, identification.
Accompanying drawing explanation
Fig. 1 is the flow chart of the motor failure control method of the embodiment of the present invention;
Fig. 2 is the control circuit schematic diagram of single motor form;
Fig. 3 is the control circuit schematic diagram of bi-motor form;
Fig. 4 is the structural representation of the motor failure control device of the embodiment of the present invention.
Embodiment
Below in conjunction with the drawings and specific embodiments, the present invention is described in further detail, but not as a limitation of the invention.
Please refer to Fig. 1, the invention provides a kind of motor failure control method, especially, can be used in air-conditioning system, more particularly, this motor is the alternating current machine without feedback, such as, and mainly tap motor and external rotor alternate current motor etc.
In one embodiment, the method comprises: the current detection signal obtaining motor; Motor failure has been judged whether according to current detection signal; If there is motor failure, then, while cut-out inefficacy feeding electric motors, keep powering to normal motor, thus guarantee system can continue normal operation.Preferably, motor failure comprises stall or short circuit or open circuit.
In technique scheme, the power supply circuits of each motor are provided with current sensing means, to monitor the running status of motor.The present invention detects the electric current (such as, can by current transformer etc.) of motor in real time, when finding the current anomaly of motor, then judges motor failure, and by cutting off the mode of inefficacy feeding electric motors, protects.For those normal motor, then it is still kept to be in powered operation state.Technique scheme is not only applicable to single motor, is also applicable to the situation of many motors.
Owing to have employed technique scheme; the present invention can detect the generation of inefficacy in time when alternating current machine lost efficacy, and makes corresponding protection act in time, thus the system of guarantee can continue normal work; or in time stoppage protection, thus ensure that timely detection to motor failure, identification.
Preferably, motor failure control method also comprises: judge whether the rotating speed of normal motor is in most high tap position; If the rotating speed of normal motor is in most high tap position, then enable the speedup electric capacity for subsequent use of normal motor, run electric capacity improve normal motor rotating speed to cross increasing normal motor.In the present invention, each motor is provided with speedup electric capacity for subsequent use, and under normal circumstances, speedup electric capacity for subsequent use is in normally open, and when the motor failure corresponding with it, this speedup electric capacity for subsequent use is just enabled.
Preferably, motor failure control method also comprises: if the rotating speed of normal motor is in non-most high tap position, then improve the rotating speed gear of normal motor.Further preferably, motor failure control method also comprises: if still cannot ensure that system is normally run when the rotating speed gear of normal motor being increased to most high tap position, then start the speedup electric capacity for subsequent use of normal motor.Like this, when the rotating speed of normal motor is not most high tap position, if some motor there occurs inefficacy, then first the rotating speed gear of normal motor is heightened, until most high tap position.If still cannot ensure that system is normally run, then just start its speedup electric capacity for subsequent use.
Preferably, motor failure control method also comprises: if there is motor failure, then, while the power supply cutting off inefficacy motor, send warning message.Preferably, warning message comprises light warning message and/or audible alarm information.
Such as, please refer to Fig. 2, for single motor form, when motor failure (stall, short circuit, open circuit) being detected, control system does stoppage protection action, sends light, sound alarm simultaneously, prompting electrical fault.In Fig. 2, O ' is inefficacy motor, and A is motor power, and B is current sensing means, and C is motor switch, and D is for running electric capacity, and E is speedup electric capacity for subsequent use, and F is speedup switch for subsequent use.
Such as, please refer to Fig. 3, for many motors (particularly two motors) type of service in parallel, when remaining motor normal operation when detecting the part in multiple motor to lose efficacy (stall, short circuit, open circuit), system shutdown inefficacy feeding electric motors and keep powering to normal motor.In figure 3, O is normal motor, and O ' is inefficacy motor, and A is motor power, and B is current sensing means, and C is motor switch, and D is for running electric capacity, and E is speedup electric capacity for subsequent use, and F is speedup switch for subsequent use.
Such as, when detecting that motor all lost efficacy, control system does stoppage protection action, sends light, sound alarm simultaneously, prompting electrical fault.
Preferably, audible alarm information comprises using buzzer call to carry out reporting to the police and/or directly using and shows that the voice that motor breaks down are reported to the police.Such as, the voice of " electrical fault " are directly sent.
Preferably, warning message comprises display failure code and/or directly shows electrical fault.Such as, the word of directly display " electrical fault ".Like this, owner can be facilitated to report for repairment in time, directly check motor and related layouts, accessory according to display failure code and/or direct display electrical fault when maintenance personal overhauls air-conditioning, greatly save the cost of overhaul.
Please refer to Fig. 4, present invention also offers a kind of motor failure control device, comprising: acquisition module, for obtaining the current detection signal of multiple motor; First judge module, for having judged whether motor failure according to current detection signal; Power supply protection module, for while cut-out inefficacy feeding electric motors, keeps powering to normal motor.
Preferably, motor failure control device also comprises: the second judge module, for judging whether the rotating speed of normal motor is in most high tap position; First speedup electric capacity control module, during for being in most high tap position at the rotating speed of normal motor, enables the speedup electric capacity for subsequent use of normal motor.
Preferably, motor failure control device also comprises: adjustment of rotational speed module, during for being in non-most high tap position at the rotating speed of normal motor, improves the rotating speed gear of normal motor.
Preferably, motor failure control device also comprises: the second speedup electric capacity control module, during for still ensureing that system is normally run when the rotating speed gear of normal motor being increased to most high tap position, starts the speedup electric capacity for subsequent use of normal motor.
Preferably, motor failure control device also comprises: alarm module, for when there being motor failure, while the power supply cutting off inefficacy motor, sends warning message.
Certainly, be more than the preferred embodiment of the present invention.It should be pointed out that for those skilled in the art, under the prerequisite not departing from its general principles, can also make some improvements and modifications, these improvements and modifications are also considered as protection scope of the present invention.
Claims (14)
1. a motor failure control method, is characterized in that, comprising:
Obtain the current detection signal of motor;
Motor failure has been judged whether according to described current detection signal;
If there is motor failure, then, while cut-out inefficacy feeding electric motors, keep powering to normal motor.
2. motor failure control method according to claim 1, is characterized in that, described method also comprises:
Judge whether the rotating speed of normal motor is in most high tap position;
If the rotating speed of normal motor is in most high tap position, then enable the speedup electric capacity for subsequent use of normal motor.
3. motor failure control method according to claim 2, is characterized in that, described method also comprises:
If the rotating speed of normal motor is in non-most high tap position, then improve the rotating speed gear of normal motor.
4. motor failure control method according to claim 3, is characterized in that, described method also comprises:
If still cannot ensure that system is normally run when the rotating speed gear of normal motor being increased to most high tap position, then start the speedup electric capacity for subsequent use of normal motor.
5. motor failure control method according to claim 1, is characterized in that, described method also comprises:
If there is motor failure, then, while the power supply cutting off inefficacy motor, send warning message.
6. motor failure control method according to claim 5, is characterized in that, described warning message comprises light warning message and/or audible alarm information.
7. motor failure control method according to claim 6, is characterized in that, described audible alarm information comprises use buzzer call and carries out reporting to the police and/or directly using showing that the voice that motor breaks down are reported to the police.
8. motor failure control method according to claim 5, is characterized in that, described warning message comprises display failure code and/or directly shows electrical fault.
9. motor failure control method according to claim 1, is characterized in that, described motor failure comprises stall or short circuit or open circuit.
10. a motor failure control device, is characterized in that, comprising:
Acquisition module, for obtaining the current detection signal of multiple motor;
First judge module, for having judged whether motor failure according to described current detection signal;
Power supply protection module, for while cut-out inefficacy feeding electric motors, keeps powering to normal motor.
11. motor failure control device according to claim 10, is characterized in that, described motor failure control device also comprises:
Second judge module, for judging whether the rotating speed of normal motor is in most high tap position;
First speedup electric capacity control module, during for being in most high tap position at the rotating speed of normal motor, enables the speedup electric capacity for subsequent use of normal motor.
12. motor failure control device according to claim 11, is characterized in that, described motor failure control device also comprises:
Adjustment of rotational speed module, during for being in non-most high tap position at the rotating speed of normal motor, improves the rotating speed gear of normal motor.
13. motor failure control device according to claim 12, is characterized in that, described motor failure control device also comprises:
Second speedup electric capacity control module, during for still ensureing that system is normally run when the rotating speed gear of normal motor being increased to most high tap position, starts the speedup electric capacity for subsequent use of normal motor.
14., according to claim 10 to the motor failure control device according to any one of 13, is characterized in that, described motor failure control device also comprises:
Alarm module, for when there being motor failure, while the power supply cutting off inefficacy motor, sends warning message.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510976333.2A CN105576610B (en) | 2015-12-21 | 2015-12-21 | Motor failure control method and device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510976333.2A CN105576610B (en) | 2015-12-21 | 2015-12-21 | Motor failure control method and device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105576610A true CN105576610A (en) | 2016-05-11 |
| CN105576610B CN105576610B (en) | 2018-04-13 |
Family
ID=55886451
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510976333.2A Expired - Fee Related CN105576610B (en) | 2015-12-21 | 2015-12-21 | Motor failure control method and device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105576610B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115999276A (en) * | 2022-12-22 | 2023-04-25 | 珠海格力电器股份有限公司 | Control method and control device of filter screen cleaning device, storage medium and electric appliance |
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| CN201341017Y (en) * | 2008-12-10 | 2009-11-04 | 深圳市中电电力技术有限公司 | Electromotor protector |
| JP2011230040A (en) * | 2010-04-27 | 2011-11-17 | Tomoe Engineering Co Ltd | Centrifugal separator and operation method of the same |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN115999276B (en) * | 2022-12-22 | 2024-04-16 | 珠海格力电器股份有限公司 | Control method and control device of filter screen cleaning device, storage medium and electric appliance |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105576610B (en) | 2018-04-13 |
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