CN112886904A - Method for solving motor stalling - Google Patents
Method for solving motor stalling Download PDFInfo
- Publication number
- CN112886904A CN112886904A CN202110248920.5A CN202110248920A CN112886904A CN 112886904 A CN112886904 A CN 112886904A CN 202110248920 A CN202110248920 A CN 202110248920A CN 112886904 A CN112886904 A CN 112886904A
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- CN
- China
- Prior art keywords
- motor
- parameter
- stalling
- rotation direction
- monitoring
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000000034 method Methods 0.000 title claims abstract description 6
- 238000012544 monitoring process Methods 0.000 claims abstract description 5
- 230000002159 abnormal effect Effects 0.000 description 1
- 238000010924 continuous production Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Classifications
-
- 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
- H02P29/00—Arrangements for regulating or controlling electric motors, appropriate for both AC and DC motors
- H02P29/02—Providing protection against overload without automatic interruption of supply
- H02P29/024—Detecting a fault condition, e.g. short circuit, locked rotor, open circuit or loss of load
- H02P29/028—Detecting a fault condition, e.g. short circuit, locked rotor, open circuit or loss of load the motor continuing operation despite the fault condition, e.g. eliminating, compensating for or remedying the fault
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Control Of Electric Motors In General (AREA)
Abstract
The invention belongs to the technical field of motor control, and relates to a method for solving the problem of motor stalling. By monitoring the technical parameters of the motor operation, when the technical parameters of the motor operation are monitored to reach the set motor stalling parameter range, the rotation direction of the motor is adjusted to enable the motor to rotate reversely by a certain angle, and then the rotation direction of the motor is adjusted to enable the motor to continue to rotate in the forward direction. The whole system is prevented from stopping due to the fact that a motor of certain equipment in the system is locked.
Description
Technical Field
The invention belongs to the technical field of motor control, and particularly relates to a method for solving the problem of motor stalling.
Background
The motor is the main power source of mechanical equipment, and some mechanical equipment can change because of the operating mode in service, and rotating member load increases to make motor stall, equipment parking, production interrupt. In particular to a belt conveyor, a screw conveyor, a crusher, a rotary feeder and the like, wherein in operation, the transported materials can cause the dead running parts to be blocked, the motor is blocked, the overload protection action is caused, the equipment is stopped, and if the equipment and other equipment form a system (such as a continuous production line), the whole system is in chain reaction due to the stop of one equipment, the system is stopped, and the greater loss is caused.
Disclosure of Invention
The technical problem to be solved by the invention is to solve the defects of the background technology and provide a method for avoiding system shutdown when abnormal motor of mechanical equipment is locked.
The specific technical scheme of the invention is that the motor operation technical parameters are monitored, when the monitored motor operation technical parameters reach the set motor stalling parameter range, the rotation direction of the motor is adjusted, the motor rotates reversely for a certain angle, and then the rotation direction of the motor is adjusted, so that the motor continues to rotate in the forward direction.
The motor stalling parameter is a motor technical parameter when the rotating speed of the motor is rapidly reduced to a certain value due to overload, and can also be a motor technical parameter when the rotating speed of the motor is reduced to zero due to overload.
The motor operation technical parameter comprises the rotating speed of a motor rotor.
The rotating speed of the motor rotor can be directly detected by monitoring the rotating speed of the motor rotor, and the rotating speed can also be detected by detecting the rotating speed of a mechanical equipment rotating part connected with the motor.
The motor operating parameter may also include current, voltage, back emf, or one or more of these.
The specific implementation mode is as follows:
the present invention will be further described with reference to the following examples.
Example 1:
a rotating speed detector is arranged on the motor, the rotating speed of the motor is detected, a rotating speed signal is input into the PLC, when the PLC detects that the rotating speed of the motor is lower than a set value, a control signal is output to a controller of the motor, the motor rotates reversely by a certain angle (or a plurality of rotations), and then the control signal is output to the controller of the motor, so that the motor continues to rotate forwards, and the whole system is not stopped.
Example 2:
the rotation speed detector in embodiment 1 may be installed on a mechanical device driven by a motor, and detect the rotation speed of a rotating part of the mechanical device, such as the rotation speed of a belt roller of a belt conveyor, the rotation speed of a main shaft of a screw conveyor, the rotation speed of a rotating wheel of a rotary feeder, and the like, wherein the names of the rotary feeders include many names, such as a rotary feeding valve, a rotary feeder, a stylized wheel, a wind isolation wheel, and the like.
Example 3:
the running current of the motor is detected, a motor current signal is input into the PLC, when the PLC detects that the motor current is larger than a set value, a control signal is output to a controller of the motor, the motor rotates reversely for a certain angle (or a plurality of rotations), and then the control signal is output to the controller of the motor, so that the motor continues to rotate forwards, and the whole system is not stopped.
Example 4:
the running voltage of the motor is detected, a motor voltage signal is input into the PLC, when the PLC detects that the motor voltage exceeds a set value, a control signal is output to a controller of the motor, the motor rotates reversely by a certain angle (or a plurality of rotations), and then the control signal is output to the controller of the motor, so that the motor continues to rotate forwards, and the whole system is not stopped.
Example 5:
the back electromotive force of the motor is detected, a back electromotive force signal of the motor is input into the PLC, when the PLC detects that the back electromotive force of the motor exceeds a set value, a control signal is output to a controller of the motor, the motor rotates reversely by a certain angle (or a plurality of rotations), and then the control signal is output to the controller of the motor, so that the motor continues to rotate in the forward direction, and the whole system is not stopped.
The above examples illustrate specific embodiments of the present invention, but these descriptions should not be construed as limiting the scope of the invention, which is defined by the appended claims, and any modifications based on the claims are intended to be included in the scope of the invention.
Claims (7)
1. A method for solving the motor stalling includes monitoring motor operation technical parameters, adjusting the rotation direction of the motor when the monitored motor operation technical parameters reach a set motor stalling parameter range, enabling the motor to rotate reversely by a certain angle, and then adjusting the rotation direction of the motor to enable the motor to continue to rotate forward.
2. The motor stalling parameter as set forth in claim 1, which is a motor technical parameter when the motor is overloaded and the rotating speed is rapidly reduced to a certain value.
3. The motor operation parameter of claim 1 is the rotational speed of the motor rotor.
4. According to claim 1, claim 3, monitoring the rotational speed of the rotor of the electrical machine is achieved by monitoring the rotational speed of a rotating part of a mechanical device connected to the electrical machine.
5. The motor operation parameter of claim 1 is the current of the motor.
6. The motor operation parameter of claim 1 is the voltage of the motor.
7. The motor operation parameter of claim 1 is the back electromotive force of the motor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110248920.5A CN112886904A (en) | 2021-03-08 | 2021-03-08 | Method for solving motor stalling |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110248920.5A CN112886904A (en) | 2021-03-08 | 2021-03-08 | Method for solving motor stalling |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112886904A true CN112886904A (en) | 2021-06-01 |
Family
ID=76055685
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110248920.5A Pending CN112886904A (en) | 2021-03-08 | 2021-03-08 | Method for solving motor stalling |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112886904A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113415576A (en) * | 2021-06-29 | 2021-09-21 | 国能(泉州)热电有限公司 | Method, device and system for judging jamming fault of coal feeder |
-
2021
- 2021-03-08 CN CN202110248920.5A patent/CN112886904A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113415576A (en) * | 2021-06-29 | 2021-09-21 | 国能(泉州)热电有限公司 | Method, device and system for judging jamming fault of coal feeder |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20210601 |