CN112542980A - Oil-cooled motor heat dissipation control method - Google Patents
Oil-cooled motor heat dissipation control method Download PDFInfo
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- CN112542980A CN112542980A CN202011465552.1A CN202011465552A CN112542980A CN 112542980 A CN112542980 A CN 112542980A CN 202011465552 A CN202011465552 A CN 202011465552A CN 112542980 A CN112542980 A CN 112542980A
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- motor
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- 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
- H02P29/60—Controlling or determining the temperature of the motor or of the drive
- H02P29/64—Controlling or determining the temperature of the winding
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- Motor Or Generator Cooling System (AREA)
Abstract
The invention discloses a heat dissipation control method of an oil-cooled motor, which comprises a shell, a stator, a rotor and a cooling oil path, and comprises the following specific steps; A. checking whether the current of the motor exceeds an upper limit or not, and stopping power output if the current of the motor exceeds the upper limit; B. checking whether the temperature of the winding sensor exceeds the overtemperature; C. if the temperature is over-high, the power output of the motor is limited or the motor is stopped, and the rotating speed of the oil pump is increased; D. if the motor is not over-temperature, checking whether the rotating speed of the motor exceeds the critical rotating speed; E. if the motor exceeds the electromagnetic noise rotating speed, reducing the rotating speed; F. if the critical rotating speed is not exceeded, the step A is returned, and the oil-cooled motor heat dissipation control method can prevent the problems of motor burnout and motor electromagnetic noise caused by motor stalling. The temperature of the motor is guaranteed to operate within a reasonable temperature range, and obvious electromagnetic noise is not generated.
Description
Technical Field
The invention relates to the technical field of motors, in particular to a heat dissipation control method for an oil-cooled motor.
Background
The winding and the magnet generate a large amount of heat in the working process of the existing oil-cooled motor, and the motor needs to be cooled by oil in order to protect the winding of the motor from overheating. The cooling oil path enters the motor from the hollow shaft of the motor, and then cools the motor winding and the magnet through an oil injection and oil throwing pipeline, and the conventional motor heat dissipation control is to ensure that the motor winding does not exceed the temperature by monitoring the winding temperature and the inlet oil temperature;
however, there are the following two problems; firstly, a motor heat dissipation control heat dissipation strategy does not consider motor stalling, when the motor stalls, the current of the motor is rapidly increased, the temperature of the motor is rapidly increased, and the risk of causing overtemperature of a motor winding is caused; secondly, a motor heat dissipation strategy does not consider the problem of electromagnetic noise caused by overlarge motor rotating speed, and therefore an oil-cooled motor heat dissipation control method is provided.
Disclosure of Invention
The invention aims to provide a heat dissipation control method for an oil-cooled motor, so as to solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme: a heat dissipation control method for an oil-cooled motor comprises a shell, a stator, a rotor and a cooling oil way, and comprises the following specific steps;
A. checking whether the current of the motor exceeds an upper limit or not, and stopping power output if the current of the motor exceeds the upper limit;
B. checking whether the temperature of the winding sensor exceeds the overtemperature;
C. if the temperature is over-high, the power output of the motor is limited or the motor is stopped, and the rotating speed of the oil pump is increased;
D. if the motor is not over-temperature, checking whether the rotating speed of the motor exceeds the critical rotating speed;
E. if the motor exceeds the electromagnetic noise rotating speed, reducing the rotating speed;
F. and if the critical rotating speed is not exceeded, returning to the step A.
Preferably, a current detection device is mounted on the motor controller to detect the current I passing through the motor.
Preferably, a current upper limit value I0 is set in a control chip in the motor controller.
Preferably, when the current I passing through the motor is greater than the upper limit value I0 of the motor, the motor controller stops supplying power to the motor, and the motor stops outputting power; when I is less than I0, the motor continues to operate.
Preferably, the motor controller receives signals of a temperature sensor on the motor winding, detects the motor winding temperature T, and reduces the output power of the motor when the motor winding temperature exceeds a set critical value T0. And meanwhile, the motor controller sends a rotating speed increasing signal to the electronic oil pump to increase the rotating speed of the oil pump. And continuously detecting the motor winding temperature until the motor winding temperature is less than the critical value T0, and exiting.
Preferably, the motor controller detects a motor speed R, and when the motor speed is greater than a speed R0 of the electromagnetic noise of interest, the motor reduces the speed and exits.
Compared with the prior art, the invention has the beneficial effects that:
the invention prevents the problems of motor burnout and motor electromagnetic noise caused by motor stalling. The temperature operation of the motor is ensured to be within a reasonable temperature range, and no obvious electromagnetic noise is generated;
the motor heat dissipation strategy can ensure that the temperature of the motor operates within a reasonable temperature range, and obvious electromagnetic noise is not generated.
Drawings
FIG. 1 is a schematic flow chart of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The invention provides a technical scheme that: a heat dissipation control method for an oil-cooled motor comprises a shell, a stator, a rotor and a cooling oil way, and comprises the following specific steps;
A. checking whether the current of the motor exceeds an upper limit or not, and stopping power output if the current of the motor exceeds the upper limit;
B. checking whether the temperature of the winding sensor exceeds the overtemperature;
C. if the temperature is over-high, the power output of the motor is limited or the motor is stopped, and the rotating speed of the oil pump is increased;
D. if the motor is not over-temperature, checking whether the rotating speed of the motor exceeds the critical rotating speed;
E. if the motor exceeds the electromagnetic noise rotating speed, reducing the rotating speed;
F. and if the critical rotating speed is not exceeded, returning to the step A.
Preferably, a current detection device is mounted on the motor controller to detect the current I passing through the motor.
Preferably, a current upper limit value I0 is set in a control chip in the motor controller.
Preferably, when the current I passing through the motor is greater than the upper limit value I0 of the motor, the motor controller stops supplying power to the motor, and the motor stops outputting power; when I is less than I0, the motor continues to operate.
Preferably, the motor controller receives signals of a temperature sensor on the motor winding, detects the motor winding temperature T, and reduces the output power of the motor when the motor winding temperature exceeds a set critical value T0. And meanwhile, the motor controller sends a rotating speed increasing signal to the electronic oil pump to increase the rotating speed of the oil pump. And continuously detecting the motor winding temperature until the motor winding temperature is less than the critical value T0, and exiting.
Preferably, the motor controller detects a motor speed R, and when the motor speed is greater than a speed R0 of the electromagnetic noise of interest, the motor reduces the speed and exits.
2.1 installing a current detection device on the motor controller to detect the current I passing through the motor.
2.2 setting the upper limit value of current I0 in the control chip of the motor controller
2.3 when the current I passing through the motor is larger than the upper limit value I0 of the motor, the motor controller stops supplying power to the motor, and the motor stops outputting power.
2.4 when I is less than I0, the motor continues to operate
2.5 the motor controller receives the signal of the temperature sensor on the motor winding, detects the temperature T of the motor winding, and when the temperature of the motor winding exceeds a set critical value T0, the motor reduces the output power. And meanwhile, the motor controller sends a rotating speed increasing signal to the electronic oil pump to increase the rotating speed of the oil pump. And continuously detecting the motor winding temperature until the motor winding temperature is less than the critical value T0, and exiting.
2.6 the motor controller detects the motor speed R and when the motor speed is greater than R0 for the electromagnetic noise of interest, the motor reduces the speed and exits.
2.7 the motor continues to step 2.1, the temperature of the motor is guaranteed to operate within a reasonable temperature range, and obvious electromagnetic noise is not generated.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (6)
1. The heat dissipation control method for the oil-cooled motor comprises a shell, a stator, a rotor and a cooling oil way, and is characterized in that: the method comprises the following specific steps;
A. checking whether the current of the motor exceeds an upper limit or not, and stopping power output if the current of the motor exceeds the upper limit;
B. checking whether the temperature of the winding sensor exceeds the overtemperature;
C. if the temperature is over-high, the power output of the motor is limited or the motor is stopped, and the rotating speed of the oil pump is increased;
D. if the motor is not over-temperature, checking whether the rotating speed of the motor exceeds the critical rotating speed;
E. if the motor exceeds the electromagnetic noise rotating speed, reducing the rotating speed;
F. and if the critical rotating speed is not exceeded, returning to the step A.
2. The oil-cooled motor heat dissipation control method according to claim 1, characterized in that: a current detection device is arranged on the motor controller and is used for detecting the current I passing through the motor.
3. The oil-cooled motor heat dissipation control method according to claim 2, characterized in that: the upper current limit value I0 is set in a control chip in the motor controller.
4. The oil-cooled motor heat dissipation control method according to claim 3, characterized in that: when the current I passing through the motor is larger than the upper limit value I0 of the motor, the motor controller stops supplying power to the motor, and the motor stops outputting power; when I is less than I0, the motor continues to operate.
5. The oil-cooled motor heat dissipation control method according to claim 4, characterized in that: the motor controller receives signals of a temperature sensor on the motor winding, detects the temperature T of the motor winding, and reduces the output power of the motor when the temperature of the motor winding exceeds a set critical value T0. And meanwhile, the motor controller sends a rotating speed increasing signal to the electronic oil pump to increase the rotating speed of the oil pump. And continuously detecting the motor winding temperature until the motor winding temperature is less than the critical value T0, and exiting.
6. The oil-cooled motor heat dissipation control method according to claim 5, characterized in that: the motor controller detects the motor speed R and when the motor speed is greater than the speed R0 of the electromagnetic noise of interest, the motor reduces the speed and exits.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011465552.1A CN112542980A (en) | 2020-12-13 | 2020-12-13 | Oil-cooled motor heat dissipation control method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011465552.1A CN112542980A (en) | 2020-12-13 | 2020-12-13 | Oil-cooled motor heat dissipation control method |
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| Publication Number | Publication Date |
|---|---|
| CN112542980A true CN112542980A (en) | 2021-03-23 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011465552.1A Pending CN112542980A (en) | 2020-12-13 | 2020-12-13 | Oil-cooled motor heat dissipation control method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115276302A (en) * | 2022-08-26 | 2022-11-01 | 吉林大学 | Oil-cooled motor and overheating protection method thereof |
| CN115325413A (en) * | 2022-08-29 | 2022-11-11 | 吉林大学 | Oil-cold-electric-drive thermal management system and method |
-
2020
- 2020-12-13 CN CN202011465552.1A patent/CN112542980A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115276302A (en) * | 2022-08-26 | 2022-11-01 | 吉林大学 | Oil-cooled motor and overheating protection method thereof |
| CN115325413A (en) * | 2022-08-29 | 2022-11-11 | 吉林大学 | Oil-cold-electric-drive thermal management system and method |
| CN115325413B (en) * | 2022-08-29 | 2023-10-10 | 吉林大学 | Oil-cooled electric drive thermal management system and method |
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