CN106642516B - A kind of method and air-conditioning equipment detecting motor temperature - Google Patents
A kind of method and air-conditioning equipment detecting motor temperature Download PDFInfo
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- CN106642516B CN106642516B CN201610809748.5A CN201610809748A CN106642516B CN 106642516 B CN106642516 B CN 106642516B CN 201610809748 A CN201610809748 A CN 201610809748A CN 106642516 B CN106642516 B CN 106642516B
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K13/00—Thermometers specially adapted for specific purposes
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/50—Control or safety arrangements characterised by user interfaces or communication
- F24F11/52—Indication arrangements, e.g. displays
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K2201/00—Application of thermometers in air-conditioning systems
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K2205/00—Application of thermometers in motors, e.g. of a vehicle
Abstract
The embodiment of the present invention provides a kind of method and air-conditioning equipment for detecting motor temperature, for solving the technical problem poor using the accuracy of the temperature in temperature sensor detection air-conditioning equipment inside motor.This method comprises: determining at least one change rate in air-conditioning equipment, at least one described change rate includes the corresponding variation rate of magnetic flux of motor and/or resistance change rate；Based at least one described change rate, the Current Temperatures of the motor are determined.
Description
Technical field
The present invention relates to electronic technology field, in particular to a kind of method and air-conditioning equipment for detecting motor temperature.
Background technique
With the progress of science and technology, more and more electronic products come into daily life, improve people
Quality of the life.Wherein, air-conditioning can be to the tune that the temperature of air, degree of purity, air velocity etc. are handled in enclosure space
Save equipment.Air-conditioning sucks the refrigerant gas of low-temp low-pressure by compressor (compressor) from air intake duct, is transported by motor
Turn after being compressed with piston to it, to the refrigerant gas of exhaust pipe discharge high temperature and pressure, provides power for refrigeration cycle.
In practical applications, with the work of compressor, motor is in the state temperature persistently rotated and gradually rises, because
This, in order to guarantee the normal work of compressor, it will usually the internal temperature of motor is measured in real time, so that motor is in energy
In the ambient temperature range enough worked normally.Currently, user when knowing motor internal temperature, generallys use temperature sensor inspection
The environment temperature of the inside of measured motor, however, the actual temperature of workpiece is usually wanted compared with the environment temperature tested in motor
Therefore height in the environment temperature based on test as the temperature inside motor, is then carried out in the temperature based on test corresponding
When control, such as adjustment revolving speed, it may result in control result inaccuracy.
Summary of the invention
The embodiment of the present invention provides a kind of method and air-conditioning equipment for detecting motor temperature, uses temperature sensing for solving
The poor technical problem of the accuracy of temperature in device detection air-conditioning equipment inside motor.
A method of detection motor temperature, comprising the following steps:
Determine that at least one change rate in air-conditioning equipment, at least one described change rate include the corresponding magnetic flux of motor
Change rate and/or resistance change rate；
Based at least one described change rate, the Current Temperatures of the motor are determined.
Optionally, at least one change rate in the determining air-conditioning equipment, comprising:
Determine the current magnetic flux parameter of motor and current resistance parameter in the air-conditioning equipment；
The variation rate of magnetic flux is obtained based on the ratio between the current magnetic flux parameter and initial magnetic flux amount parameter；
The resistance change rate is determined based on the ratio between the current resistance parameter and initial resistance parameter.
Optionally, described that the Current Temperatures of the motor are determined based at least one described change rate, including
Obtain the current rotary speed parameter of the motor；
Based at least one described change rate and the rotary speed parameter, the Current Temperatures of the motor are determined.
Optionally, described based at least one described change rate and the rotary speed parameter, determine the current temperature of the motor
Degree, comprising:
If it is determined that the rotary speed parameter is in first range of speeds, based on the corresponding pass between resistance change rate and temperature
System, determines the Current Temperatures of the motor；And
If it is determined that the rotary speed parameter is in second range of speeds, based between the variation rate of magnetic flux and temperature
Corresponding relationship, determines the Current Temperatures of the motor, and the maximum value of first range of speeds is less than second range of speeds
Minimum value.
Optionally, after determining at least one change rate in air-conditioning equipment, the method also includes:
Based at least one described change rate, the corresponding angular error of the motor is determined；
Angle compensation is carried out to the motor based on the angular error.
Second aspect, the embodiment of the present invention provide a kind of air-conditioning equipment, comprising:
First determining module, for determining at least one change rate in air-conditioning equipment, at least one described change rate packet
Include the corresponding variation rate of magnetic flux of motor and/or resistance change rate；
Second determining module, for determining the Current Temperatures of the motor based at least one described change rate.
Optionally, first determining module is used for:
Determine the current magnetic flux parameter of motor and current resistance parameter in the air-conditioning equipment；
The variation rate of magnetic flux is obtained based on the ratio between the current magnetic flux parameter and initial magnetic flux amount parameter；
The resistance change rate is determined based on the ratio between the current resistance parameter and initial resistance parameter.
Optionally, the air-conditioning equipment further include:
Module is obtained, for obtaining the current rotary speed parameter of the motor；
Second determining module is used to determine the motor based at least one described change rate and the rotary speed parameter
Current Temperatures.
Optionally, second determining module is used for:
If it is determined that the rotary speed parameter is in first range of speeds, based on the corresponding pass between resistance change rate and temperature
System, determines the Current Temperatures of the motor；And
If it is determined that the rotary speed parameter is in second range of speeds, based between the variation rate of magnetic flux and temperature
Corresponding relationship, determines the Current Temperatures of the motor, and the maximum value of first range of speeds is less than second range of speeds
Minimum value.
Optionally, the air-conditioning equipment further include:
Third determining module, for being based on described at least one after determining at least one change rate in air-conditioning equipment
A change rate determines the corresponding angular error of the motor；
Compensating module, for carrying out angle compensation to the motor based on the angular error.
In the embodiment of the present invention, by determining at least one change rate in air-conditioning equipment during operation of air conditioner, this is extremely
A few change rate includes the corresponding variation rate of magnetic flux of motor and/or resistance change rate, so that it is based at least one change rate,
It can determine the Current Temperatures of motor.And magnetic flux and resistance are the relevant parameter of workpiece in motor, therefore pass through magnetic
The change rate of flux and resistance more can intuitively reflect the temperature conditions inside motor, so that test result is closer to very
Real value, test result are more accurate.
Simultaneously as the temperature inside motor can determine according to variation rate of magnetic flux and resistance change rate, without
Temperature sensor is set, the cost of air-conditioning equipment is reduced.
Detailed description of the invention
To describe the technical solutions in the embodiments of the present invention more clearly, make required in being described below to embodiment
Attached drawing is briefly introduced.
Fig. 1 is the flow chart that the method for motor temperature is detected in the embodiment of the present invention；
Fig. 2 is the schematic diagram of revolving speed and at least one change rate in the embodiment of the present invention；
Fig. 3 is the structure chart of air-conditioning equipment in the embodiment of the present invention.
Specific embodiment
The embodiment of the present invention provides a kind of method and air-conditioning equipment for detecting motor temperature, uses temperature sensing for solving
The poor technical problem of the accuracy of temperature in device detection air-conditioning equipment inside motor.
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with the embodiment of the present invention
In attached drawing, technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described embodiment is
A part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, those of ordinary skill in the art
Every other embodiment obtained without creative efforts, shall fall within the protection scope of the present invention.
In the embodiment of the present invention, air-conditioning equipment can be intelligent air condition, such as intelligent frequency-conversion air-conditioning or fixed frequency air conditioner, etc.,
It can be to the Air Temperature in corresponding environment space (parlor, bedroom in such as family or the office in office building, dining room etc.)
Degree is adjusted, such as adjusts temperature, the humidity of air, and the embodiment of the present invention is not specifically limited this.
The preferred embodiment of the present invention is described in detail with reference to the accompanying drawing.
As shown in Figure 1, the embodiment of the present invention provides a kind of method for detecting motor temperature, it is applied to air-conditioning equipment, the party
The process of method can be described as follows.
S11: determine that at least one change rate in air-conditioning equipment, at least one change rate include the corresponding magnetic flux of motor
Change rate and/or resistance change rate.
In the embodiment of the present invention, air-conditioning equipment during the work time, such as freezes or heats, and compressor passes through motor and drives
It works.Wherein, motor is a kind of calutron that can be realized electric energy conversion or transmitting according to the law of electromagnetic induction, it
Main function is to generate driving torque, as with power source.Optionally, in air-conditioning equipment motor can be permanent magnet synchronous DC without
Brush motor or other types motor, the present invention are not specifically limited this.
Optionally, during carrying out S11, it can be the current magnetic flux parameter of motor in determining air-conditioning equipment and work as
Preceding resistance parameter obtains variation rate of magnetic flux based on the ratio between current magnetic flux parameter and initial magnetic flux amount parameter, is based on
Ratio between current resistance parameter and initial resistance parameter determines resistance change rate.
In practical applications, the rotary power of ac motor relies primarily on alternating current and establishes rotary magnetic in the stator
, the stator winding of usual three-phase motor passes through the electric current for mutually differing 120 ° (electrical angle) respectively, it can obtains rotating excitation field.
The coil (such as copper coil) of the rotor of motor can generate magnetic field after being powered, and interact and rotate with magnetic field stator.
The current resistance parameter of motor can be obtained by test in air-conditioning equipment, such as can pass through megameter or general-purpose
Table measures the resistance value of motor, alternatively, the resistance parameter of motor can also be determined by calculation.
For example, can be calculated using with resistivity formula, i.e. R=ρ (L/S), wherein R represents the resistance of conducting wire, and unit is
Ohm, ρ represent the resistivity of conductor, and unit is ohmcm, and L represents the length of conducting wire, and unit is centimetre that S represents conducting wire
Sectional area, unit is square centimeter.And the calculating of the length (L) of conducting wire are as follows: the every slot coil number * of the perimeter * of electrical-coil is every
Group coil number.
Since resistivity is usually related to temperature, in compressor operation, the resistance value of resistance may be in motor
The variation of temperature and change.For thermal resistor, the typical feature of thermal resistor is to temperature
Degree is sensitive, and different resistance values is shown at a temperature of different.It includes positive temperature coefficient thermistor (PTC) and negative temperature
Coefficient thermal resistor (NTC), wherein positive temperature coefficient thermistor (PTC) resistance value when temperature is higher is bigger, subzero temperature
It is lower to spend coefficient thermal resistor (NTC) resistance value when temperature is higher.Therefore the current electricity of electrode can be obtained with real-time detection
Hinder parameter.
Optionally, current magnetic flux can be according to relevant parameter calculate and determine.By foregoing teachings it is found that magnetic flux
Amount is directly proportional to magnetic induction density B, and magnetic induction density B is directly proportional to electric current, so, magnetic flux is just directly proportional to electric current,
Therefore in practical applications, the current magnetic flux parameter of motor can be determined by measurement current of electric.In the electricity of measurement motor
When stream, it can be and determined using single resistance or more resistor current method of samplings or other test methods, the present invention does not make this
Concrete restriction.
In practical applications, initial resistance parameter and initial magnetic flux amount parameter can be the mark on the nameplate based on motor
Determining.For example, B is magnetic flux density (i.e. magnetic induction intensity), unit is tesla (T), should have mark on the nameplate of motor.
S is the pole-face product under each pole-face, and S=L τ: wherein L is effective edge lengths of armature coil, and τ is pole span, the two amounts, electricity
It should also be marked on the nameplate of machine, then according to above three parameter, so that it may acquire magnetic flux: Φ=BS.On some nameplates
Also numerical value can be directly given, if magnetic flux is 0.2047Wb, resistance is 3.3 Ω.
Optionally, after the current magnetic flux parameter of determination and initial magnetic flux amount parameter, further, it is possible to determine the two
Between ratio, i.e. variation rate of magnetic flux.
Similarly, according to determining current resistance parameter and initial resistance parameter, that is, it can determine corresponding resistance change rate.It is logical
For often, the parameter can be and sets at once air-conditioning equipment when leaving the factory, such as initial resistance parameter may be at [0.5 Ω,
25 Ω] in the range of.
When in practical applications, under normal circumstances, such as room temperature, the ratio of current magnetic flux parameter and initial magnetic flux amount parameter
Value, i.e., variation rate of magnetic flux and resistance change rate can be 1, therefore, can get over 1 benchmark as change rate relative to 1 deviation
It is more, then show that variation is also big.
S12: it is based at least one change rate, determines the Current Temperatures of the motor.
In the embodiment of the present invention, since the corresponding variation rate of magnetic flux of motor and resistance change rate can have with temperature respectively
There is corresponding corresponding relationship.Usually, according to the temperature-coefficient of electrical resistance of equipment in motor, can be changed with temperature caused by
Resistance and magnetic flux variation, to establish the corresponding relationship.
And the corresponding relationship between resistance change rate and temperature is usually related with the attribute of device material.For example, for just
The material of temperature coefficient, when temperature in a certain range when, resistance value will not change, and continue to rise and be more than when temperature
After critical value, then resistance will accordingly increase.
In practical applications, since temperature-coefficient of electrical resistance is fixed value, TCR, i.e. TCR=(r-r can be expressed as0)*
ΔT/r0, wherein Δ T represents the variable quantity of temperature, is the absolute value of the difference of Current Temperatures and critical-temperature.TCR value can be with
It characterizes temperature and increases 1 DEG C, the variation of the resistance value of equipment.For example, temperature increases, then resistance liter for corresponding positive temperature coefficient
Height, temperature and resistance direct proportionality, and for negative temperature, temperature increases resistance and then reduces, and temperature and resistance are in anti-
Proportionate relationship.In turn, calculation formula based on above-mentioned TCR can calculate it can be concluded that proportionate relationship between resistance and temperature
Corresponding Current Temperatures out.
For example, if critical-temperature is 45 DEG C, the temperature coefficient of device be -0.1 (i.e. temperature is every increases 1 DEG C, and resistance reduces,
And resistance change rate is 0.1), to determine that resistance change rate is 0.7 if testing, relative to 1 deviation of standard value 0.3, i.e. resistance
Become smaller, therefore then based on formula 3 it is found that temperature is proportional with resistance change rate, temperature may improve 7 DEG C, i.e., current temperature
Degree is 52 DEG C.
Correspondingly, being also possible to user (such as technical staff) according to reality to relationship between variation rate of magnetic flux and temperature
What test was arranged in advance.Usually, as the temperature increases, magnetic flux can increase accordingly.For example, temperature often increases 1 DEG C,
Magnetic flux then increases by 0.1 (i.e. 10%), etc..Then the change rate based on magnetic flux it can be learnt that temperature situation of change.
For example, temperature threshold value is 40 DEG C, however, it is determined that after temperature is more than critical temperature value, temperature is every to increase 1 DEG C, magnetic flux
Amount increases 0.1, determines that variation rate of magnetic flux is to increase 0.35 if detecting, that is, shows that temperature increases 3.5 DEG C, therefore inside motor
Current Temperatures are 43.5 DEG C.
In practical applications, it since the variation of temperature usually can cause the variation of resistance and magnetic flux, therefore can be based on
Two change rates acquire the corresponding temperature of current time motor respectively, and then calculate the mean temperature of two gained temperature values
Value, and with regard to the average temperature value as the Current Temperatures inside motor, to improve the accuracy of calculated result.For example, being such as based on
The corresponding relationship of resistance change rate and temperature, the first temperature value determined are 62 DEG C, and based on variation rate of magnetic flux and temperature
Corresponding relationship, determining second temperature value be 63 DEG C, then by the average value of the two, i.e., 62.5 DEG C be determined as it is current inside motor
Temperature.
Usually, the workload of compressor is bigger, and the temperature difference for such as needing to adjust processing is larger, then turn of corresponding motor
Speed also can be faster, and the revolving speed of motor will also result in the influence of the temperature inside motor.Therefore, it before S11, can also obtain
The current rotary speed parameter of motor, the rotary speed parameter can characterize the workload of compressor in air-conditioning equipment,
Then the process of S12 can also be based at least one change rate and rotary speed parameter the Current Temperatures for determining motor
's.
Specifically, when determining the Current Temperatures of motor based at least one change rate, process may include: in determination
When rotary speed parameter is in first range of speeds, based on the corresponding relationship between resistance change rate and temperature, working as motor is determined
Preceding temperature；And when determining that rotary speed parameter is in second range of speeds, based on the corresponding pass between variation rate of magnetic flux and temperature
System, determines the Current Temperatures of motor, the minimum value of the maximum value of first range of speeds less than second range of speeds.
I.e. according to the revolving speed of motor, it can choose and temperature is pushed away come counter based on corresponding variable quantity, to realize to motor
The accurate detection of internal temperature.
In present example example, based on the corresponding relation between parameter, at least one change rate can be expressed as follows,
In, variation rate of magnetic flux can be indicated with formula 1, and resistance change rate can be indicated with formula 2, it may be assumed that
Wherein, φm0For initial magnetic flux amount parameter, φmFor current magnetic flux parameter, r0For initial resistance parameter, r is detection
Current resistance parameter, i is the current of electric of detection, and a, b are the fixed coefficient of ratio, KTFor temperature varying coefficient.
In practical applications, when motor speed (w) is smaller, temperature coefficient is and larger in revolving speed mainly by Resistance Influence
When, resistance parameter influence is smaller, and temperature coefficient is mainly influenced by magnetic flux parameter, as shown in Fig. 2, it is temperature and magnetic flux
Relation schematic diagram between change rate, resistance change rate and revolving speed, wherein with the offset of magnetic flux for ± 0.1 (i.e. figure intermediate value
For straight line shown in 0.9 and 1.1), for the offset of resistance is ± 0.3 (i.e. figure intermediate value is curve shown in 0.7 and 1.3).
In the embodiment of the present invention, first range of speeds can be low-speed running range, such as can be (0,200rad/s),
Second range of speeds can be high speed operating range, such as can be (200rad/s, 450rad/s], etc., this field skill
Art personnel can be configured according to the actual situation, and the embodiment of the present invention is not specifically limited this.
It optionally, then can be based on the corresponding relationship between resistance change rate and temperature come really in first range of speeds
Determine the Current Temperatures of motor.Even determine more obviously, i.e., at this time the resistance of device may change by the current revolving speed of motor
Running parameter relevant to temperature is mainly resistance, then can be by detecting and calculating resistance change rate, and then is determined corresponding
Temperature, and determining temperature will be calculated as temperature corresponding inside motor.
For example, it is in first range of speeds if detecting the current revolving speed of motor is less than 200rad/s, the temperature of equipment in motor
Spending coefficient is -0.75, determines that resistance change rate is to reduce 0.3 (i.e. 30%) if being detected, the temperature residual quantity of corresponding change is 4
DEG C, if temperature threshold value is 70 DEG C, the temperature of current motor is 74 DEG C.
Similarly, however, it is determined that the revolving speed of motor is larger, such as larger than 200rad/s or other critical values, then can be with current motor
Temperature and the correlation of variation rate of magnetic flux are bigger.At this point it is possible to which the change rate for only needing to detect magnetic flux can calculate motor
Internal temperature, for example, if calculating resulting temperature is 78 DEG C according to the corresponding relationship between variation rate of magnetic flux and temperature,
It can be using the temperature as the Current Temperatures inside motor.
In practical applications, due to the stator of motor, rotor windings all be using certain class of insulation insulation copper material or
Made of copper wire.For the class of insulation according to the difference of insulating materials, the maximum temperature value that work allows is that have certain limitation
(such as B-class insulation is 130 degree degrees Celsius).If temperature is more than specified value, the performance of insulating materials will degenerate, and accelerate insulation
Aging finally can also make insulation breakdown and burn, even result in burning for motor.Therefore, pass through the standard to motor internal temperature
Really detection, is conducive in real time be monitored the temperature of electrode interior, to avoid its temperature excessively high, guarantees its normal operation.
Optionally, it in the embodiment of the present invention, is also based at least one change rate and determines that the corresponding angle of motor is missed
Difference, and then angle compensation is carried out to motor based on angular error.For example, when determining angle lag, it can be based on the angle of lag
Degree, such as 40 ° then can control rotor more 40 ° of rotations on the basis of being rotated by 360 ° of motor.Correspondingly, if it is determined that motor
Angle is forward, then can control rotor and rotate respective angles less, to realize angle compensation.
As shown in figure 3, it includes that the first determining module 201 and second determines mould that the embodiment of the present invention, which provides a kind of air-conditioning equipment,
Block 202.
Optionally, the first determining module 201 is determined at least one change rate in air-conditioning equipment, it is described at least
One change rate includes the corresponding variation rate of magnetic flux of motor and/or resistance change rate.
Second determining module 202 can be used for determining the Current Temperatures of the motor based at least one described change rate.
First determining module 201 can be used for: determine in the air-conditioning equipment the current magnetic flux parameter of motor and current
Resistance parameter；The magnetic flux change is obtained based on the ratio between the current magnetic flux parameter and initial magnetic flux amount parameter
Rate；The resistance change rate is determined based on the ratio between the current resistance parameter and initial resistance parameter.
Optionally, the air-conditioning equipment further include:
Module is obtained, for obtaining the current rotary speed parameter of the motor；
Second determining module 202 is used for based at least one described change rate and the rotary speed parameter, determine described in
The Current Temperatures of motor.
Optionally, second determining module 202 can be used for:
If it is determined that the rotary speed parameter is in first range of speeds, based on the corresponding pass between resistance change rate and temperature
System, determines the Current Temperatures of the motor；And
If it is determined that the rotary speed parameter is in second range of speeds, based between the variation rate of magnetic flux and temperature
Corresponding relationship, determines the Current Temperatures of the motor, and the maximum value of first range of speeds is less than second range of speeds
Minimum value.
Optionally, the air-conditioning equipment further includes third determining module and compensating module, wherein third determining module is used for
After determining at least one change rate in air-conditioning equipment, based at least one described change rate, determine that the motor is corresponding
Angular error；Compensating module, for carrying out angle compensation to the motor based on the angular error.
In the embodiment of the present invention, by determining at least one change rate in air-conditioning equipment during operation of air conditioner, this is extremely
A few change rate includes the corresponding variation rate of magnetic flux of motor and/or resistance change rate, so that it is based at least one change rate,
It can determine the Current Temperatures of motor.And magnetic flux and resistance are the relevant parameter of workpiece in motor, therefore pass through magnetic
The change rate of flux and resistance more can intuitively reflect the temperature conditions inside motor, so that test result is closer to very
Real value, test result are more accurate.
Simultaneously as the temperature inside motor can determine according to variation rate of magnetic flux and resistance change rate, without
Temperature sensor is set, the cost of air-conditioning equipment is reduced.
It should be understood by those skilled in the art that, the embodiment of the present invention can provide as method, system or computer program
Product.Therefore, complete hardware embodiment, complete software embodiment or reality combining software and hardware aspects can be used in the present invention
Apply the form of example.Moreover, it wherein includes the computer of computer usable program code that the present invention, which can be used in one or more,
The computer program implemented in usable storage medium (including but not limited to magnetic disk storage, CD-ROM, optical memory etc.) produces
The form of product.
The present invention be referring to according to the method for the embodiment of the present invention, the process of equipment (system) and computer program product
Figure and/or block diagram describe.It should be understood that every one stream in flowchart and/or the block diagram can be realized by computer program instructions
The combination of process and/or box in journey and/or box and flowchart and/or the block diagram.It can provide these computer programs
Instruct the processor of general purpose computer, special purpose computer, Embedded Processor or other programmable data processing devices to produce
A raw machine, so that being generated by the instruction that computer or the processor of other programmable data processing devices execute for real
The device for the function of being specified in present one or more flows of the flowchart and/or one or more blocks of the block diagram.
These computer program instructions, which may also be stored in, is able to guide computer or other programmable data processing devices with spy
Determine in the computer-readable memory that mode works, so that it includes referring to that instruction stored in the computer readable memory, which generates,
Enable the manufacture of device, the command device realize in one box of one or more flows of the flowchart and/or block diagram or
The function of being specified in multiple boxes.
These computer program instructions also can be loaded onto a computer or other programmable data processing device, so that counting
Series of operation steps are executed on calculation machine or other programmable devices to generate computer implemented processing, thus in computer or
The instruction executed on other programmable devices is provided for realizing in one or more flows of the flowchart and/or block diagram one
The step of function of being specified in a box or multiple boxes.
Obviously, various changes and modifications can be made to the invention without departing from essence of the invention by those skilled in the art
Mind and range.In this way, if these modifications and changes of the present invention belongs to the range of the claims in the present invention and its equivalent technologies
Within, then the present invention is also intended to include these modifications and variations.
Claims (6)
1. a kind of method for detecting motor temperature, which is characterized in that the described method includes:
Determine that at least one change rate in air-conditioning equipment, at least one described change rate include the corresponding magnetic flux change of motor
Rate and/or resistance change rate；
Obtain the current rotary speed parameter of the motor；
If it is determined that the rotary speed parameter is in first range of speeds, based on the corresponding relationship between resistance change rate and temperature,
Determine the Current Temperatures of the motor；And
If it is determined that the rotary speed parameter is in second range of speeds, based on corresponding between the variation rate of magnetic flux and temperature
Relationship, determines the Current Temperatures of the motor, and the maximum value of first range of speeds is less than second range of speeds most
Small value.
2. the method as described in claim 1, which is characterized in that at least one change rate in the determining air-conditioning equipment, packet
It includes:
Determine the current magnetic flux parameter of motor and current resistance parameter in the air-conditioning equipment；
The variation rate of magnetic flux is obtained based on the ratio between the current magnetic flux parameter and initial magnetic flux amount parameter；
The resistance change rate is determined based on the ratio between the current resistance parameter and initial resistance parameter.
3. method according to claim 1 or 2, which is characterized in that determine at least one change rate in air-conditioning equipment it
Afterwards, the method also includes:
Based at least one described change rate, the corresponding angular error of the motor is determined；
Angle compensation is carried out to the motor based on the angular error.
4. a kind of air-conditioning equipment, comprising:
First determining module, for determining that at least one change rate in air-conditioning equipment, at least one described change rate include electricity
The corresponding variation rate of magnetic flux of machine and/or resistance change rate；
Module is obtained, for obtaining the current rotary speed parameter of the motor；
Second determining module, however, it is determined that the rotary speed parameter is in first range of speeds, based on resistance change rate and temperature it
Between corresponding relationship, determine the Current Temperatures of the motor；And
If it is determined that the rotary speed parameter is in second range of speeds, based on corresponding between the variation rate of magnetic flux and temperature
Relationship, determines the Current Temperatures of the motor, and the maximum value of first range of speeds is less than second range of speeds most
Small value.
5. air-conditioning equipment as claimed in claim 4, which is characterized in that first determining module is used for:
Determine the current magnetic flux parameter of motor and current resistance parameter in the air-conditioning equipment；
The variation rate of magnetic flux is obtained based on the ratio between the current magnetic flux parameter and initial magnetic flux amount parameter；
The resistance change rate is determined based on the ratio between the current resistance parameter and initial resistance parameter.
6. air-conditioning equipment as described in claim 4 or 5, which is characterized in that the air-conditioning equipment further include:
Third determining module, for after determining at least one change rate in air-conditioning equipment, at least one to become based on described in
Rate determines the corresponding angular error of the motor；
Compensating module, for carrying out angle compensation to the motor based on the angular error.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610809748.5A CN106642516B (en) | 2016-09-08 | 2016-09-08 | A kind of method and air-conditioning equipment detecting motor temperature |
Applications Claiming Priority (1)
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1540830A (en) * | 2003-10-30 | 2004-10-27 | 沈阳工业大学 | Digitak type thermal protection method for electromotor |
| CN102484438A (en) * | 2009-08-28 | 2012-05-30 | 日产自动车株式会社 | Anomaly detection device for a permanent magnet synchronous electric motor |
| CN104218863A (en) * | 2013-05-21 | 2014-12-17 | Ifp新能源公司 | Method and system for determining internal temperatures of a synchronous electric machine by means of status observers |
| CN104767457A (en) * | 2015-04-23 | 2015-07-08 | 四川长虹空调有限公司 | Self-adapting method of parameters in running process of direct current frequency conversion compressor |
| CN105227029A (en) * | 2014-06-24 | 2016-01-06 | 海信（山东）空调有限公司 | A kind of method of motor temperature detection of compressor and device |
| CN105588665A (en) * | 2014-11-06 | 2016-05-18 | 奥迪股份公司 | Method For Determining A Coil Temperature Of An Electric Machine |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4548886B2 (en) * | 1999-12-27 | 2010-09-22 | 東洋電機製造株式会社 | Control device for permanent magnet type synchronous motor |
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- 2016-09-08 CN CN201610809748.5A patent/CN106642516B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1540830A (en) * | 2003-10-30 | 2004-10-27 | 沈阳工业大学 | Digitak type thermal protection method for electromotor |
| CN102484438A (en) * | 2009-08-28 | 2012-05-30 | 日产自动车株式会社 | Anomaly detection device for a permanent magnet synchronous electric motor |
| CN104218863A (en) * | 2013-05-21 | 2014-12-17 | Ifp新能源公司 | Method and system for determining internal temperatures of a synchronous electric machine by means of status observers |
| CN105227029A (en) * | 2014-06-24 | 2016-01-06 | 海信（山东）空调有限公司 | A kind of method of motor temperature detection of compressor and device |
| CN105588665A (en) * | 2014-11-06 | 2016-05-18 | 奥迪股份公司 | Method For Determining A Coil Temperature Of An Electric Machine |
| CN104767457A (en) * | 2015-04-23 | 2015-07-08 | 四川长虹空调有限公司 | Self-adapting method of parameters in running process of direct current frequency conversion compressor |
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