CN106642516A - Method for detecting temperature of motor and air conditioning equipment - Google Patents

Method for detecting temperature of motor and air conditioning equipment Download PDF

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Publication number
CN106642516A
CN106642516A CN201610809748.5A CN201610809748A CN106642516A CN 106642516 A CN106642516 A CN 106642516A CN 201610809748 A CN201610809748 A CN 201610809748A CN 106642516 A CN106642516 A CN 106642516A
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CN
China
Prior art keywords
motor
rate
change
temperature
parameter
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CN201610809748.5A
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Chinese (zh)
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CN106642516B (en
Inventor
阳丹
刘�东
高向军
李越峰
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四川长虹电器股份有限公司
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Publication of CN106642516A publication Critical patent/CN106642516A/en
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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00Control or safety arrangements
    • F24F11/30Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01KMEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
    • G01K13/00Thermometers specially adapted for specific purposes
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00Control or safety arrangements
    • F24F11/50Control or safety arrangements characterised by user interfaces or communication
    • F24F11/52Indication arrangements, e.g. displays
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01KMEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
    • G01K2201/00Application of thermometers in air-conditioning systems
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01KMEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
    • G01K2205/00Application of thermometers in motors, e.g. of a vehicle

Abstract

The embodiment of the invention provides a method for detecting the temperature of a motor and air conditioning equipment. The method for detecting the temperature of the motor and the air conditioning equipment are used for solving the technical problem of poor accuracy happening when a temperature sensor is used for detecting the internal temperature of the motor inside the air conditioning equipment. The method includes the steps that at least one change rate in the air conditioning equipment is determined, and the at least one change rate comprises a magnetic flux change rate and/or resistance change rate corresponding to the motor; and based on the at least one change rate, the current temperature of the motor is determined.

Description

A kind of method and air-conditioning equipment of detection motor temperature
Technical field
The present invention relates to electronic technology field, the method and air-conditioning equipment of more particularly to a kind of detection motor temperature.
Background technology
With the progress of science and technology, increasing electronic product comes into daily life, improves people Quality of the life.Wherein, the tune that air-conditioning can be processed the temperature of air, degree of purity, air velocity etc. in closing space Section equipment.Air-conditioning sucks the refrigerant gas of low-temp low-pressure by compressor (compressor) from air intake duct, is transported by motor After turning to be compressed it with piston, the refrigerant gas of HTHP are discharged to blast pipe, for kind of refrigeration cycle power is provided.
In actual applications, with the work of compressor, state temperature of the motor in persistently rotating gradually rises, because This, in order to ensure the normal work of compressor, it will usually which real-time detection is carried out to the internal temperature of motor, is so that motor is in energy In the ambient temperature range of enough normal works.At present, user is generally examined when motor internal temperature is known using temperature sensor The environment temperature of the inside of measured motor, however, the environment temperature that the actual temperature of workpiece is generally relatively tested in motor will Height, therefore, in the temperature for being used as motor internal based on the environment temperature of test, carried out accordingly based on the temperature of test then During control, rotating speed is such as adjusted, may result in control result inaccurate.
The content of the invention
The embodiment of the present invention provides a kind of method and air-conditioning equipment of detection motor temperature, for solving to use TEMP The poor technical problem of the accuracy of the temperature of motor internal in device detection air-conditioning equipment.
A kind of method of detection motor temperature, comprises the following steps:
Determine at least one of air-conditioning equipment rate of change, at least one rate of change includes the corresponding magnetic flux of motor Rate of change and/or resistance change rate;
Based at least one rate of change, the Current Temperatures of the motor are determined.
Optionally, at least one of described determination air-conditioning equipment rate of change, including:
Determine the current magnetic flux parameter and current resistance parameter of motor 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, it is described that the Current Temperatures of the motor are determined based at least one rate of change, including
Obtain the current rotary speed parameter of the motor;
Based at least one rate of change and the rotary speed parameter, the Current Temperatures of the motor are determined.
Optionally, it is described based at least one rate of change and the rotary speed parameter, determine the current temperature of the motor Degree, including:
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 relation, determines the Current Temperatures of the motor, and the maximum of first range of speeds is less than second range of speeds Minimum of a value.
Optionally, it is determined that after at least one of air-conditioning equipment rate of change, methods described also includes:
Based at least one rate of change, 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 provides a kind of air-conditioning equipment, including:
First determining module, for determining at least one of air-conditioning equipment rate of change, at least one rate of change bag Include the corresponding variation rate of magnetic flux of motor and/or resistance change rate;
Second determining module, for based at least one rate of change, determining the Current Temperatures of the motor.
Optionally, first determining module is used for:
Determine the current magnetic flux parameter and current resistance parameter of motor 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 also includes:
Acquisition module, the rotary speed parameter current for obtaining the motor;
Second determining module is used for based at least one rate of change and the rotary speed parameter, determines the motor 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 relation, determines the Current Temperatures of the motor, and the maximum of first range of speeds is less than second range of speeds Minimum of a value.
Optionally, the air-conditioning equipment also includes:
3rd determining module, for it is determined that after at least one of air-conditioning equipment rate of change, based on described at least one Individual rate of change, 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 rate of change in air-conditioning equipment during operation of air conditioner, this is extremely A few rate of change includes the corresponding variation rate of magnetic flux of motor and/or resistance change rate, so as to be based at least one rate of change, Can determine that the Current Temperatures of motor.And magnetic flux is the related parameter of workpiece in motor to resistance, therefore by magnetic The rate of change of flux and resistance more can intuitively reflect the temperature conditions of motor internal so that test result is closer to very Real-valued, test result is more accurate.
Simultaneously as according to variation rate of magnetic flux and resistance change rate, you can determine the temperature of motor internal, so as to need not Temperature sensor is set, the cost of air-conditioning equipment is reduced.
Description of the drawings
Technical scheme in order to be illustrated more clearly that the embodiment of the present invention, below will be to making needed for embodiment description Accompanying drawing is briefly introduced.
Fig. 1 is the flow chart of the method that motor temperature is detected in the embodiment of the present invention;
Fig. 2 is the schematic diagram of rotating speed and at least one rate of change 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 of detection motor temperature, for solving to use TEMP The poor technical problem of the accuracy of the temperature of motor internal in device detection air-conditioning equipment.
To make purpose, technical scheme and the advantage of the embodiment of the present invention clearer, below in conjunction with the embodiment of the present invention In accompanying drawing, the technical scheme in the embodiment of the present invention is clearly and completely described, it is clear that described embodiment is The a part of embodiment of the present invention, rather than the embodiment of whole.Based on the embodiment in the present invention, those of ordinary skill in the art The every other embodiment obtained under the premise of creative work is not made, belongs to the scope of protection of the 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 (such as the parlor in family, the office in bedroom, or office building, dining room etc.) Degree is adjusted, and such as adjusts temperature, the humidity of air, and the embodiment of the present invention is not specifically limited to this.
The preferred embodiment of the present invention is described in detail below in conjunction with the accompanying drawings.
As shown in figure 1, the embodiment of the present invention provides a kind of method of detection motor temperature, air-conditioning equipment, the party are applied to The process of method can be described as follows.
S11:Determine at least one of air-conditioning equipment rate of change, at least one rate of change includes the corresponding magnetic flux of motor Rate of change and/or resistance change rate.
In the embodiment of the present invention, air-conditioning equipment in the course of the work, such as freezes or heats, and compressor is driven by motor It is operated.Wherein, motor is can to realize a kind of calutron that electric energy is changed or transmitted according to the law of electromagnetic induction, it Main Function is to produce driving torque, used 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 is not specifically limited to this.
Optionally, during S11 is carried out, the current magnetic flux parameter of motor can be to determine in air-conditioning equipment and is worked as Front resistance parameter, based on the ratio between current magnetic flux parameter and initial magnetic flux amount parameter variation rate of magnetic flux is obtained, and is based on Current ratio between resistance parameter and initial resistance parameter determines resistance change rate.
In actual applications, the rotary power of ac motor relies primarily on alternating current and sets up rotary magnetic in the stator , the stator winding of usual three phase electric machine is respectively by the electric current of mutually difference 120 ° (electrical angle), you can to obtain rotating excitation field. The coil (such as copper coil) of the rotor of motor can produce magnetic field after being powered, and interact with magnetic field stator and rotate.
The current resistance parameter of motor can be obtained by testing in air-conditioning equipment, for example can be by megameter or general-purpose Table measures the resistance value of motor, or, it is also possible to by calculating the resistance parameter for determining motor.
It is for instance possible to use calculated with resistivity formula, i.e. R=ρ (L/S), wherein, R represents the resistance of wire, and unit is Ohm, ρ represents the resistivity of conductor, and unit is ohmcm, and L represents the length of wire, unit for centimetre, S represents wire Sectional area, unit is square centimeter.And length (L) of wire is calculated as:The girth * of motor coil is every per line of rabbet joint number of turns * Group coil number.
Because resistivity is generally related to temperature, in compressor operation, the resistance of resistance may be with motor The change of temperature and change.For thermal resistor, the typical feature of thermal resistor is to temperature Degree is sensitive, and different resistance values are shown at different temperature.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 Degree coefficient thermal resistor (NTC) resistance value when temperature is higher is lower.Therefore the current electricity that electrode can be obtained with real-time detection Resistance parameter.
Optionally, current magnetic flux can be calculated according to related parameter and determined.From foregoing teachings, 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 actual applications, the current magnetic flux parameter of motor can be determined by measurement motor electric current.In the electricity of measurement motor Can determine that the present invention does not make to this using single resistance or many resistor current method of samplings or other method of testings during stream Concrete restriction.
In actual applications, initial resistance parameter and initial magnetic flux amount parameter can be the marks on the nameplate based on motor It is determined that.For example, B is magnetic flux density (i.e. magnetic induction intensity), and unit is tesla (T), should there is mark on the nameplate of motor. S is that the pole-face under each pole-face is accumulated, S=L τ:Wherein L is effective edge lengths of armature coil, and τ is pole span, the two amounts, electricity Also should mark on the nameplate of machine, then according to above three parameter, it is possible to try to achieve magnetic flux:Φ=BS.On some nameplates Also numerical value can be directly given, such as magnetic flux is 0.2047Wb, and resistance is 3.3 Ω.
Optionally, it is determined that after current magnetic flux parameter and initial magnetic flux amount parameter, further, it is possible to determine both it Between ratio, i.e. variation rate of magnetic flux.
In the same manner, according to the current resistance parameter and initial resistance parameter for determining, you can it is determined that corresponding resistance change rate.It is logical For often, air-conditioning equipment parameter when dispatching from the factory can set at once, such as initial resistance parameter may be at [0.5 Ω, 25 Ω] in the range of.
When in actual applications, under normal circumstances, such as normal 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 using 1 as rate of change benchmark, get over relative to 1 deviation It is many, then show that change is also big.
S12:Based at least one rate of change, the Current Temperatures of the motor are determined.
In the embodiment of the present invention, because the corresponding variation rate of magnetic flux of motor and resistance change rate can have respectively with temperature There is corresponding corresponding relation.As a rule, according to the temperature-coefficient of electrical resistance of equipment in motor, it may be determined that caused by temperature change Resistance and magnetic flux change, so as to set up the corresponding relation.
And the corresponding relation between resistance change rate and temperature is generally related with the attribute of device material.For example, for just The material of temperature coefficient, when temperature within the specific limits when, resistance value will not change, and work as temperature and continue to rise and exceed After critical value, then resistance will be accordingly increased.
In actual applications, because temperature-coefficient of electrical resistance is fixed value, it can be expressed as TCR, i.e. TCR=(r-r0)* ΔT/r0, wherein, Δ T represents the variable quantity of temperature, and it is the absolute value of the difference of Current Temperatures and critical-temperature.TCR values can be with Characterize temperature and raise 1 DEG C, the change of the resistance value of equipment.For example, for correspondence positive temperature coefficient, temperature is raised, then resistance liter Height, temperature and resistance direct proportionality, and for negative temperature, temperature rises high resistance and then reduces, temperature is with resistance in anti- Proportionate relationship.Further, the computing formula based on above-mentioned TCR can draw the proportionate relationship between resistance and temperature, you can calculate Go out corresponding Current Temperatures.
For example, if critical-temperature is 45 DEG C, the temperature coefficient of device be -0.1 (i.e. temperature often raises 1 DEG C, and resistance reduces, And resistance change rate is for 0.1), if test determines that resistance change rate is 0.7,0.3, i.e. resistance relative to the deviation of standard value 1 Diminish, therefore then understand that temperature is proportional with resistance change rate, and temperature may improve 7 DEG C, i.e., current temperature based on formula 3 Spend for 52 DEG C.
Accordingly, between variation rate of magnetic flux and temperature can also be user (such as technical staff) to relation according to reality What test was arranged in advance.As a rule, with the increase of temperature, 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 rate of change based on magnetic flux can learn the situation of change of temperature.
For example, temperature threshold value is 40 DEG C, however, it is determined that after temperature exceedes critical temperature value, temperature often raises 1 DEG C, magnetic flux Amount increase 0.1, if detection determines that variation rate of magnetic flux is increase 0.35, that is, shows that temperature increases 3.5 DEG C, therefore motor internal Current Temperatures are 43.5 DEG C.
In actual applications, because the change of temperature can typically each cause the change of resistance and magnetic flux, therefore can be based on Two rates of change try to achieve respectively the corresponding temperature of current time motor, and then calculate the mean temperature of two gained temperature values Value, and with regard to the average temperature value as motor internal Current Temperatures, to improve the accuracy of result of calculation.For example, such as it is based on The corresponding relation of resistance change rate and temperature, it is determined that the first temperature value be 62 DEG C, and be based on variation rate of magnetic flux with temperature Corresponding relation, it is determined that second temperature value be 63 DEG C, then both mean value, i.e., 62.5 DEG C are defined as into the current of motor internal Temperature.
As a rule, the live load of compressor is bigger, if desired for adjust process the temperature difference it is larger, then corresponding motor turn Speed also can be faster, and the rotating speed of motor will also result in the impact of the temperature of motor internal.Therefore, before S11, can also obtain The current rotary speed parameter of motor, the rotary speed parameter can characterize the live load of compressor in air-conditioning equipment,
Then the process of S12 can also be based at least one rate of change and rotary speed parameter to determine the Current Temperatures of motor 's.
Specifically, when determining the Current Temperatures of motor based at least one rate of change, its process can include:It is determined that When rotary speed parameter is in first range of speeds, based on the corresponding relation between resistance change rate and temperature, working as motor is determined Front 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, and the maximum of first range of speeds is less than the minimum of a value of second range of speeds.
I.e. according to the rotating speed of motor, can select to push away temperature come counter based on corresponding variable quantity, so as to realize to motor The accurate detection of internal temperature.
In present example example, based on the corresponding relation between parameter, at least one rate of change can be expressed as follows, its In, variation rate of magnetic flux can be represented with formula 1, and resistance change rate can be represented with formula 2, i.e.,:
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 actual applications, when motor speed (w) is less, temperature coefficient mainly receives Resistance Influence, and larger in rotating speed When, resistance parameter affects less, and temperature coefficient is mainly affected by magnetic flux parameter, as shown in Fig. 2 it is temperature and magnetic flux Relation schematic diagram between rate of change, resistance change rate and rotating speed, wherein, (the i.e. figure intermediate value with the side-play amount of magnetic flux as ± 0.1 Straight line shown in 0.9 and 1.1), the side-play amount of resistance is as a example by ± 0.3 (i.e. figure intermediate value is the curve shown in 0.7 and 1.3).
In the embodiment of the present invention, first range of speeds can be low-speed running scope, for example, can be (0,200rad/s), Second range of speeds can be high speed operating range, for example can be (200rad/s, 450rad/s], etc., this area skill Art personnel can be configured according to actual conditions, and the embodiment of the present invention is not specifically limited to this.
Optionally, in first range of speeds, then the corresponding relation between resistance change rate and temperature can be based on come really Determine the Current Temperatures of motor.Even determined by the current rotating speed of motor, more substantially, i.e., now the resistance of device may change The running parameter related to temperature is mainly resistance, then by detecting and calculating resistance change rate, and then can determine corresponding Temperature, and the temperature for determining will be calculated as the corresponding temperature of motor internal.
For example, if the current rotating speed of detection motor is less than 200rad/s, in first range of speeds, the temperature of equipment in motor Degree coefficient is -0.75, if determining resistance change rate after testing to reduce 0.3 (i.e. 30%), the temperature residual quantity of respective change is 4 DEG C, if temperature threshold value is 70 DEG C, the temperature of current motor is 74 DEG C.
In the same manner, however, it is determined that the rotating speed of motor is larger, such as larger than 200rad/s or other critical values, then can be with current motor Temperature is bigger with the correlation of variation rate of magnetic flux.At this point it is possible to only need to detect magnetic flux rate of change can calculating motor Internal temperature, for example, if according to the corresponding relation between variation rate of magnetic flux and temperature, the temperature obtained by calculating is 78 DEG C, Can using the temperature as motor internal Current Temperatures.
In actual applications, due to motor stator, rotor windings all be using certain class of insulation insulation copper material or Made by copper cash.According to the difference of insulating materials, the maximum temperature value that its work is allowed is that have certain restriction to the class of insulation (such as B-class insulation, be 130 degree degrees Celsius).If temperature exceedes setting, the performance of insulating materials will degenerate, and accelerate insulation It is aging, finally can also make insulation breakdown and burn, even result in burning for motor.Therefore, by the standard to motor internal temperature Really detection, is conducive in real time being monitored the temperature of electrode interior, so as to avoid its temperature too high, it is ensured that its normal operation.
Optionally, in the embodiment of the present invention, it is also based at least one rate of change 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 it is determined that angle is delayed, delayed angle can be based on Degree, such as 40 °, then can many 40 ° of rotations on the basis of being rotated by 360 ° with the rotor of controlled motor.Accordingly, however, it is determined that motor Angle is forward, then respective angles can be less rotated with controlled motor rotor, so as to realize angle compensation.
As shown in figure 3, the embodiment of the present invention provides a kind of air-conditioning equipment includes that the first determining module 201 and second determines mould Block 202.
Optionally, the first determining module 201 is determined at least one of air-conditioning equipment rate of change, it is described at least One rate of change includes the corresponding variation rate of magnetic flux of motor and/or resistance change rate.
Second determining module 202 can be used for based at least one rate of change, determine the Current Temperatures of the motor.
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 also includes:
Acquisition module, the rotary speed parameter current for obtaining the motor;
Second determining module 202 is used for based at least one rate of change and the rotary speed parameter, it is determined that described 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 relation, determines the Current Temperatures of the motor, and the maximum of first range of speeds is less than second range of speeds Minimum of a value.
Optionally, the air-conditioning equipment also includes the 3rd determining module and compensating module, wherein, the 3rd determining module is used for It is determined that after at least one of air-conditioning equipment rate of change, based at least one rate of change, determining the motor correspondence 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 rate of change in air-conditioning equipment during operation of air conditioner, this is extremely A few rate of change includes the corresponding variation rate of magnetic flux of motor and/or resistance change rate, so as to be based at least one rate of change, Can determine that the Current Temperatures of motor.And magnetic flux is the related parameter of workpiece in motor to resistance, therefore by magnetic The rate of change of flux and resistance more can intuitively reflect the temperature conditions of motor internal so that test result is closer to very Real-valued, test result is more accurate.
Simultaneously as according to variation rate of magnetic flux and resistance change rate, you can determine the temperature of motor internal, so as to need not Temperature sensor is set, the cost of air-conditioning equipment is reduced.
Those skilled in the art are it should be appreciated that embodiments of the invention can be provided as method, system or computer program Product.Therefore, the present invention can be using complete hardware embodiment, complete software embodiment or with reference to the reality in terms of software and hardware Apply the form of example.And, the present invention can be adopted and wherein include the computer of computer usable program code at one or more The computer program implemented in usable storage medium (including but not limited to magnetic disc store, CD-ROM, optical memory etc.) is produced The form of product.
The present invention is the flow process with reference to method according to embodiments of the present invention, equipment (system) and computer program Figure and/or block diagram are describing.It should be understood that can be by computer program instructions flowchart and/or each stream in block diagram The combination of journey and/or square frame and flow chart and/or the flow process in block diagram and/or square frame.These computer programs can be provided The processor of all-purpose computer, special-purpose computer, Embedded Processor or other programmable data processing devices is instructed to produce A raw machine so that produced for reality by the instruction of computer or the computing device of other programmable data processing devices The device of the function of specifying in present one flow process of flow chart or one square frame of multiple flow processs and/or block diagram or multiple square frames.
These computer program instructions may be alternatively stored in can guide computer or other programmable data processing devices with spy In determining the computer-readable memory that mode works so that the instruction being stored in the computer-readable memory is produced to be included referring to Make the manufacture of device, the command device realize in one flow process of flow chart or one square frame of multiple flow processs and/or block diagram or The function of specifying in multiple square frames.
These computer program instructions also can be loaded in computer or other programmable data processing devices so that in meter Series of operation steps is performed on calculation machine or other programmable devices to produce computer implemented process, so as in computer or The instruction performed on other programmable devices is provided for realizing in one flow process of flow chart or multiple flow processs and/or block diagram one The step of function of specifying in individual square frame or multiple square frames.
Obviously, those skilled in the art can carry out the essence of various changes and modification without deviating from the present invention to the present invention God and scope.So, if these modifications of the present invention and modification belong to the scope of the claims in the present invention and its equivalent technologies Within, then the present invention is also intended to comprising these changes and modification.

Claims (10)

1. it is a kind of detection motor temperature method, it is characterised in that methods described includes:
Determine at least one of air-conditioning equipment rate of change, at least one rate of change includes the corresponding magnetic flux change of motor Rate and/or resistance change rate;
Based at least one rate of change, the Current Temperatures of the motor are determined.
2. the method for claim 1, it is characterised in that at least one of described determination air-conditioning equipment rate of change, bag Include:
Determine the current magnetic flux parameter and current resistance parameter of motor 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 as claimed in claim 2, it is characterised in that described based at least one rate of change, determines the electricity The Current Temperatures of machine, including
Obtain the current rotary speed parameter of the motor;
Based at least one rate of change and the rotary speed parameter, the Current Temperatures of the motor are determined.
4. method as claimed in claim 3, it is characterised in that described to be joined based at least one rate of change and the rotating speed Number, determines the Current Temperatures of the motor, including:
If it is determined that the rotary speed parameter is in first range of speeds, based on the corresponding relation 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 Relation, determines the Current Temperatures of the motor, and the maximum of first range of speeds is less than second range of speeds most Little value.
5. the method as described in the arbitrary claim of claim 1-4, it is characterised in that it is determined that at least one of air-conditioning equipment becomes After rate, methods described also includes:
Based at least one rate of change, the corresponding angular error of the motor is determined;
Angle compensation is carried out to the motor based on the angular error.
6. a kind of air-conditioning equipment, including:
First determining module, for determining at least one of air-conditioning equipment rate of change, at least one rate of change includes electricity The corresponding variation rate of magnetic flux of machine and/or resistance change rate;
Second determining module, for based at least one rate of change, determining the Current Temperatures of the motor.
7. air-conditioning equipment as claimed in claim 6, it is characterised in that first determining module is used for:
Determine the current magnetic flux parameter and current resistance parameter of motor 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.
8. air-conditioning equipment as claimed in claim 7, it is characterised in that the air-conditioning equipment also includes:
Acquisition module, the rotary speed parameter current for obtaining the motor;
Second determining module is used for based at least one rate of change and the rotary speed parameter, determines working as the motor Front temperature.
9. air-conditioning equipment as claimed in claim 8, it is characterised in that 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 relation 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 Relation, determines the Current Temperatures of the motor, and the maximum of first range of speeds is less than second range of speeds most Little value.
10. the air-conditioning equipment as described in the arbitrary claim of claim 6-9, it is characterised in that the air-conditioning equipment also includes:
3rd determining module, for it is determined that after at least one of air-conditioning equipment rate of change, becoming based on described at least one Rate, determines the corresponding angular error of the motor;
Compensating module, for carrying out angle compensation to the motor based on the angular error.
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