CN114844416A - Motor output power compensation method - Google Patents
Motor output power compensation method Download PDFInfo
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- CN114844416A CN114844416A CN202210486031.7A CN202210486031A CN114844416A CN 114844416 A CN114844416 A CN 114844416A CN 202210486031 A CN202210486031 A CN 202210486031A CN 114844416 A CN114844416 A CN 114844416A
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- 238000000034 method Methods 0.000 title claims abstract description 44
- 230000006870 function Effects 0.000 claims description 16
- 238000004590 computer program Methods 0.000 claims description 9
- 239000012530 fluid Substances 0.000 claims description 3
- 230000007613 environmental effect Effects 0.000 description 6
- 238000009966 trimming Methods 0.000 description 4
- 230000033228 biological regulation Effects 0.000 description 2
- 238000004804 winding Methods 0.000 description 2
- 238000007405 data analysis Methods 0.000 description 1
- 238000013480 data collection Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Classifications
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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
- H02P21/00—Arrangements or methods for the control of electric machines by vector control, e.g. by control of field orientation
- H02P21/14—Estimation or adaptation of machine parameters, e.g. flux, current or voltage
-
- 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
- H02P21/00—Arrangements or methods for the control of electric machines by vector control, e.g. by control of field orientation
- H02P21/14—Estimation or adaptation of machine parameters, e.g. flux, current or voltage
- H02P21/18—Estimation of position or speed
-
- 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
- H02P21/00—Arrangements or methods for the control of electric machines by vector control, e.g. by control of field orientation
- H02P21/22—Current control, e.g. using a current control loop
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Control Of Electric Motors In General (AREA)
Abstract
The invention provides a motor output power compensation method, which comprises the following steps: acquiring preset output power p; acquiring a temperature compensation coefficient alpha and a humidity compensation coefficient beta; compensating the preset output power p according to the temperature compensation coefficient alpha and the humidity compensation coefficient beta to obtain final output power p'; wherein p' ═ p α β. The invention fully considers the influence of the environment temperature and the environment humidity on the output power of the motor, can better control the operation of the motor according to the output power of the motor, provides mechanical energy to the maximum extent and avoids the damage of the motor.
Description
Technical Field
The invention relates to the technical field of numerical control machine tools, in particular to a motor output power compensation method.
Background
The output power of the motor refers to energy provided by the motor to the outside in unit time, that is, mechanical energy provided by the motor to the outside in unit time. Briefly, the motor output power is equal to the input power of the motor minus the power of the idle work.
During the actual operation of the motor, the power factor of the output power changes due to the influence of temperature and humidity. Specifically, when the ambient temperature increases, which means that the heat dissipation condition of the motor becomes worse, it is necessary to appropriately reduce the output power to avoid the motor winding from burning out. When the environmental humidity is increased, the insulation performance of the motor winding is reduced, and the power factor is reduced, so that the output power is also required to be reduced properly. That is, the power factor is affected by the change of the ambient temperature and humidity. For the motor, the output power is adjusted according to the change of the environmental temperature and humidity, the operation of the motor can be better controlled, and the damage to the motor is avoided while the mechanical energy is provided to the maximum extent.
However, through a great deal of search, the applicant finds that in the prior art, a method for performing compensation regulation and control on the output power of the motor according to the change of the environmental temperature and humidity does not exist. Therefore, a method for performing compensation regulation and control on the output power of the motor according to the environmental temperature and humidity is needed to be developed, so that the operation of the motor can be better controlled, mechanical energy can be provided to the greatest extent, and the motor can be prevented from being damaged.
Disclosure of Invention
Based on this, in order to solve the problems existing in the background technology, the invention provides a motor output power compensation method, which has the following specific technical scheme:
a motor output power compensation method comprises the following steps:
acquiring preset output power p;
acquiring a temperature compensation coefficient alpha and a humidity compensation coefficient beta;
compensating the preset output power p according to the temperature compensation coefficient alpha and the humidity compensation coefficient beta to obtain final output power p';
wherein p' ═ p α β.
According to the output power compensation method, the temperature compensation coefficient and the humidity compensation coefficient are obtained, the preset output power is compensated according to the temperature compensation coefficient and the humidity compensation coefficient to obtain the final output power, the influence of the environment temperature and the environment humidity on the output power of the motor is fully considered, the operation of the motor can be better controlled according to the output power of the motor, and the damage to the motor is avoided while the mechanical energy is provided to the maximum extent.
Further, the motor output power compensation method further comprises the following steps:
acquiring a safety constant epsilon of the motor;
acquiring a maximum safety value eta of the motor;
acquiring real-time running time t of a motor;
acquiring a reliability function R (t) (. eta. + (1-eta) (1/delta)) according to a motor safety constant epsilon, a motor maximum safety value eta and the real-time operation time t of the motor;
compensating the preset output power p according to the reliability function R (t), the temperature compensation coefficient alpha and the humidity compensation coefficient beta to obtain final output power p';
wherein p'. alpha. beta. R (t),
further, the specific method for acquiring the maximum safety value eta of the motor comprises the following steps:
respectively obtaining the service life coefficients of a plurality of motors with the same specification parameters when the motors are damaged;
and calculating the average value of the plurality of life coefficients and calculating the maximum safety value eta of the motor according to the average value of the plurality of life coefficients.
Further, the specific method for acquiring the life coefficient λ of the motor includes the following steps:
respectively acquiring the total running time of a plurality of motors with the same specification parameters when the motors are damaged;
calculating an average value T of a plurality of total operation time lengths;
and calculating the service life coefficient lambda of the motor according to the real-time running time length of the motor and the average value T of the plurality of total running time lengths.
Further, a motor safety constant epsilon is T/e; wherein e is a natural constant.
Further, the present invention is a computer-readable storage fluid medium storing a computer program which, when executed, implements the motor output power compensation method.
Further, the present invention relates to an electronic device comprising a memory, a processor and a computer program stored on the memory and executable on the processor, wherein the processor executes the computer program to implement the method for compensating the output power of the motor.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below with reference to embodiments thereof. It should be understood that the detailed description and specific examples, while indicating the scope of the invention, are intended for purposes of illustration only and are not intended to limit the scope of the invention.
It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only and do not represent the only embodiments.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
The terms "first" and "second" used herein do not denote any particular order or quantity, but rather are used to distinguish one element from another.
The first embodiment is as follows:
a motor output power compensation method comprises the following steps:
and S1, acquiring the preset output power p. The preset output power can be set and input into the controller through a touch display screen or an upper computer before the motor runs.
S2, a temperature compensation coefficient α and a humidity compensation coefficient β are obtained.
S3, compensating the preset output power p according to the temperature compensation coefficient α and the humidity compensation coefficient β to obtain a final output power p'. Wherein p' ═ p α β.
And adjusting the input voltage and/or the input current of the motor according to the final output power, and further controlling the motor to operate.
According to the output power compensation method, the temperature compensation coefficient and the humidity compensation coefficient are obtained, the preset output power is compensated according to the temperature compensation coefficient and the humidity compensation coefficient to obtain the final output power, the influence of the environment temperature and the environment humidity on the output power of the motor is fully considered, the operation of the motor can be better controlled according to the output power of the motor, and the damage to the motor is avoided while the mechanical energy is provided to the maximum extent.
Example two:
the embodiment provides a motor output power compensation method, which comprises the following steps:
and S1, acquiring the preset output power p. The preset output power can be set and input into the controller through a touch display screen or an upper computer before the motor runs.
S2, a temperature compensation coefficient α and a humidity compensation coefficient β are obtained.
Specifically, the temperature compensation coefficient is obtained from a ratio between an actual ambient temperature of the motor and a standard ambient temperature, and the humidity compensation coefficient is obtained from a ratio between an actual ambient humidity of the motor and a standard ambient humidity.
That is, the temperature compensation coefficient α is (T × κ 1/T ') + a1, and the temperature compensation coefficient β is (W × κ 2/W') + a 2. Wherein κ 1 and κ 2 are proportional adjustment coefficients corresponding to the temperature compensation coefficient and the humidity compensation coefficient, a1 and a2 are trimming constants corresponding to the temperature compensation coefficient and the humidity compensation coefficient, T is an actual ambient temperature, T 'is a standard ambient temperature, W is an actual ambient humidity, and W' is a standard ambient humidity.
Generally speaking, the proportional adjustment coefficients corresponding to the temperature compensation coefficient and the humidity compensation coefficient are both 1.0, and the trimming constants corresponding to the temperature compensation coefficient and the humidity compensation coefficient are both zero. However, due to different motor types and different output power control requirements, both the proportional adjustment coefficient corresponding to the temperature compensation coefficient and the humidity compensation coefficient and the fine adjustment constant corresponding to the temperature compensation coefficient and the humidity compensation coefficient can be set according to actual needs.
By setting the proportional adjustment coefficient and the fine adjustment constant, the motor output power compensation method can be applied to motors of different types and different control requirements, and the application range and the practicability of the method are improved.
S3, compensating the preset output power p according to the temperature compensation coefficient α and the humidity compensation coefficient β to obtain a final output power p'. Wherein p' ═ p α β.
And adjusting the input voltage and/or the input current of the motor according to the final output power, and further controlling the motor to operate.
According to the output power compensation method, the temperature compensation coefficient and the humidity compensation coefficient are obtained, the preset output power is compensated according to the temperature compensation coefficient and the humidity compensation coefficient to obtain the final output power, the influence of the environment temperature and the environment humidity on the output power of the motor is fully considered, the operation of the motor can be better controlled according to the output power of the motor, and the damage to the motor is avoided while the mechanical energy is provided to the maximum extent.
In this example, the method for compensating the output power of the motor further comprises the following steps:
and S4, acquiring a motor safety constant epsilon.
And S5, acquiring the maximum safety value eta of the motor. Specifically, in step S5, the specific method for obtaining the maximum safety value η of the motor includes the following steps:
and S50, respectively obtaining the service life coefficients of a plurality of motors with the same specification parameters when the motors are damaged.
And S51, calculating the average value of the plurality of life coefficients and calculating the maximum safety value eta of the motor according to the average value of the plurality of life coefficients.
And S6, acquiring the real-time running time t of the motor. Here, the real-time operation time period of the motor refers to a total operation time of the motor. In practical application, the total operation time of the motor can be accumulated and calculated according to the actual rotating speed, the actual current value or the actual output power of the motor.
When the actual rotating speed of the motor is larger than the preset rotating speed value, the real-time running time of the motor starts to be accumulated, or when the actual current value of the motor is larger than the preset current value, the real-time running time of the motor starts to be accumulated, or when the actual output power of the motor is larger than the preset power value, the real-time running time of the motor starts to be accumulated.
Of course, the real-time running time of the motor can be accumulated when one or more of the three conditions that the actual rotating speed is greater than the preset rotating speed value, the actual current value is greater than the preset current value and the actual output power value is greater than the preset power value meet the requirements.
And S7, acquiring a reliability function R (t) (+ (1-eta) (1/delta)) according to the motor safety constant epsilon, the maximum motor safety value eta and the real-time operation time t of the motor. Generally, for a motor, as the real-time operation time of the motor increases, the reliability function of the motor finally tends to a stable value. The stable value is infinitely close to the maximum safe value of the motor.
S8, compensating the preset output power p according to the reliability function R (t), the temperature compensation coefficient alpha and the humidity compensation coefficient beta to obtain the final output power p'. Wherein p'. alpha. beta. R (t),
as the real-time operation time of the motor increases, the performance of the motor is reduced and the reliability thereof is also reduced. The reliability function is combined with the motor safety constant, the maximum safety value of the motor and the real-time running duration of the motor, the final output power of the motor can be adjusted according to the reliability function, and the final output power is reduced when the performance of the motor is gradually reduced.
That is to say, through the reliability function, the method fully considers the influence of the environment temperature, the environment humidity and the reliability of the motor on the output power of the motor, can better control the operation of the motor according to the output power of the motor, and avoids the damage of the motor while providing mechanical energy to the maximum extent.
Example three:
the embodiment provides a motor output power compensation method, which comprises the following steps:
and S1, acquiring the preset output power p. The preset output power can be set and input into the controller through a touch display screen or an upper computer before the motor runs.
S2, a temperature compensation coefficient α and a humidity compensation coefficient β are obtained.
Specifically, the temperature compensation coefficient is obtained from a ratio between an actual ambient temperature of the motor and a standard ambient temperature, and the humidity compensation coefficient is obtained from a ratio between an actual ambient humidity of the motor and a standard ambient humidity.
That is, the temperature compensation coefficient α is (T × κ 1/T ') + a1, and the temperature compensation coefficient β is (W × κ 2/W') + a 2. Wherein κ 1 and κ 2 are proportional adjustment coefficients corresponding to the temperature compensation coefficient and the humidity compensation coefficient, a1 and a2 are trimming constants corresponding to the temperature compensation coefficient and the humidity compensation coefficient, T is an actual ambient temperature, T 'is a standard ambient temperature, W is an actual ambient humidity, and W' is a standard ambient humidity.
Generally speaking, the proportional adjustment coefficients corresponding to the temperature compensation coefficient and the humidity compensation coefficient are both 1.0, and the trimming constants corresponding to the temperature compensation coefficient and the humidity compensation coefficient are both zero. However, due to different motor types and different output power control requirements, both the proportional adjustment coefficient corresponding to the temperature compensation coefficient and the humidity compensation coefficient and the fine adjustment constant corresponding to the temperature compensation coefficient and the humidity compensation coefficient can be set according to actual needs.
By setting the proportional adjustment coefficient and the fine adjustment constant, the motor output power compensation method can be applied to motors of different types and different control requirements, and the application range and the practicability of the method are improved.
S3, compensating the preset output power p according to the temperature compensation coefficient α and the humidity compensation coefficient β to obtain a final output power p'. Wherein p' ═ p α β.
And adjusting the input voltage and/or the input current of the motor according to the final output power, and further controlling the motor to operate.
According to the output power compensation method, the temperature compensation coefficient and the humidity compensation coefficient are obtained, the preset output power is compensated according to the temperature compensation coefficient and the humidity compensation coefficient to obtain the final output power, the influence of the environment temperature and the environment humidity on the output power of the motor is fully considered, the operation of the motor can be better controlled according to the output power of the motor, and the damage to the motor is avoided while the mechanical energy is provided to the maximum extent.
In this example, the method for compensating the output power of the motor further comprises the following steps:
and S4, acquiring a motor safety constant epsilon. Preferably, the motor safety constant ∈ ═ T 1 E; wherein e is a natural constant, T 1 The unit is year for the design service life of the motor.
Through a large number of experiments and data collection and analysis, the real-time running time of the motor is within the motor safety constant, the motor can work well, and the fault shutdown probability of the motor is extremely low for the motor in the normal working environment temperature range and the normal working environment humidity range.
When the real-time running time of the motor exceeds the motor safety constant, the failure outage rate of the motor is increased along with the increase of the real-time running time of the motor.
And S5, acquiring the maximum safety value eta of the motor. Specifically, in step S5, the specific method for obtaining the maximum safety value η of the motor includes the following steps:
and S50, respectively obtaining the service life coefficients of a plurality of motors with the same specification parameters when the motors are damaged.
And S51, calculating the average value of the plurality of life coefficients and calculating the maximum safety value eta of the motor according to the average value of the plurality of life coefficients. Maximum safety value of motor
λ m represents the life factor of the mth motor when damaged, and m is the total number of motors with the same specification parameters.
And S6, acquiring the real-time running time t of the motor. Here, the real-time operation time period of the motor refers to a total operation time of the motor. In practical application, the total operation time of the motor can be accumulated and calculated according to the actual rotating speed, the actual current value or the actual output power of the motor.
When the actual rotating speed of the motor is larger than the preset rotating speed value, the real-time running time of the motor starts to be accumulated, or when the actual current value of the motor is larger than the preset current value, the real-time running time of the motor starts to be accumulated, or when the actual output power of the motor is larger than the preset power value, the real-time running time of the motor starts to be accumulated.
Of course, the real-time running time of the motor can be accumulated when one or more of the three conditions that the actual rotating speed is greater than the preset rotating speed value, the actual current value is greater than the preset current value and the actual output power value is greater than the preset power value meet the requirements.
And S7, acquiring a reliability function R (t) [ + ] + (1-eta) [ (] 1/delta ] according to the motor safety constant epsilon, the motor maximum safety value eta and the real-time running time t of the motor. Generally, for a motor, as the real-time operation time of the motor increases, the reliability function of the motor finally tends to a stable value. The stable value is infinitely close to the maximum safe value of the motor.
S8, compensating the preset output power p according to the reliability function R (t), the temperature compensation coefficient alpha and the humidity compensation coefficient beta to obtain the final output power p'. Wherein p'. alpha. beta. R (t),
n and N are positive integers. Preferably, the real-time operation time period t of the motor has a unit of year.
If the environmental temperature and the environmental humidity of the motor exceed the normal range, namely when the motor works in a severe environment, the unit of the real-time running time of the motor can be properly adjusted, and the unit is changed from year to month or day.
As the real-time operation time of the motor increases, the performance of the motor is reduced and the reliability thereof is also reduced. The reliability function is combined with the motor safety constant, the maximum safety value of the motor and the real-time running duration of the motor, the final output power of the motor can be adjusted according to the reliability function, and the final output power is reduced when the performance of the motor is gradually reduced.
That is to say, through the reliability function, the method fully considers the influence of the environment temperature, the environment humidity and the reliability of the motor on the output power of the motor, can better control the operation of the motor according to the output power of the motor, and avoids the damage of the motor while providing mechanical energy to the maximum extent.
In this example, the method for compensating the output power of the motor further comprises the following steps:
and S9, acquiring the service life coefficient lambda of the motor. Specifically, the specific method for acquiring the life coefficient λ of the motor includes the following steps:
and S90, respectively acquiring the total running time of the plurality of motors with the same specification parameters when the motors are damaged.
S91, calculating the average value T of a plurality of total operation time lengths 2 。
S92, according to the real-time running time T of the motor and the average value T of a plurality of total running time lengths 2 And calculating the service life coefficient lambda of the motor. Wherein,
the larger the life coefficient of the motor is, the healthier and safer the performance of the motor is, and the smaller the life coefficient of the motor is, the closer the motor is to be damaged. Here, T ≦ T 2 。
In the present embodiment, the present invention also provides a computer-readable storage fluid medium storing a computer program which, when executed, implements the motor output power compensation method.
In this embodiment, the present invention further provides an electronic device, which includes a memory, a processor and a computer program stored in the memory and executable on the processor, wherein the processor implements the method for compensating the output power of the motor when executing the computer program.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (7)
1. A motor output power compensation method is characterized by comprising the following steps:
acquiring preset output power p;
acquiring a temperature compensation coefficient alpha and a humidity compensation coefficient beta;
compensating the preset output power p according to the temperature compensation coefficient alpha and the humidity compensation coefficient beta to obtain final output power p';
wherein p' ═ p α β.
2. A method of compensating output power of a motor in accordance with claim 1, wherein said method of compensating output power of a motor further comprises the steps of:
acquiring a safety constant epsilon of the motor;
acquiring a maximum safety value eta of the motor;
acquiring real-time running time t of a motor;
acquiring a reliability function R (t) (. eta. + (1-eta) (1/delta)) according to a motor safety constant epsilon, a motor maximum safety value eta and the real-time operation time t of the motor;
compensating the preset output power p according to the reliability function R (t), the temperature compensation coefficient alpha and the humidity compensation coefficient beta to obtain final output power p';
wherein p'. alpha. beta. R (t),
3. a method of compensating the output power of a motor as claimed in claim 2, wherein the method of obtaining the maximum safety value η of the motor comprises the steps of:
respectively obtaining the service life coefficients of a plurality of motors with the same specification parameters when the motors are damaged;
and calculating the average value of the plurality of life coefficients and calculating the maximum safety value eta of the motor according to the average value of the plurality of life coefficients.
4. A method for compensating output power of an electric motor according to claim 3, wherein the method for obtaining the life factor λ of the electric motor comprises the steps of:
respectively acquiring the total running time of a plurality of motors with the same specification parameters when the motors are damaged;
calculating an average value T of a plurality of total operation time lengths;
and calculating the service life coefficient lambda of the motor according to the real-time running time length of the motor and the average value T of the plurality of total running time lengths.
5. The method of claim 4, wherein the motor safety constant ∈ T/e; wherein e is a natural constant.
6. A computer-readable storage fluid medium, characterized in that it stores a computer program which, when executed, implements a motor output power compensation method according to any one of claims 1-5.
7. An electronic device comprising a memory, a processor and a computer program stored on the memory and executable on the processor, characterized in that the processor implements the method of motor output power compensation according to any of claims 1-5 when executing the computer program.
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| CN202210486031.7A CN114844416A (en) | 2022-05-06 | 2022-05-06 | Motor output power compensation method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118337118A (en) * | 2024-06-14 | 2024-07-12 | 福州云能达科技有限公司 | Motor self-adaptive compensation control system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118337118A (en) * | 2024-06-14 | 2024-07-12 | 福州云能达科技有限公司 | Motor self-adaptive compensation control system |
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