CN101000051A - Torque control device of compressor and method thereof - Google Patents
Torque control device of compressor and method thereof Download PDFInfo
- Publication number
- CN101000051A CN101000051A CNA2006100781514A CN200610078151A CN101000051A CN 101000051 A CN101000051 A CN 101000051A CN A2006100781514 A CNA2006100781514 A CN A2006100781514A CN 200610078151 A CN200610078151 A CN 200610078151A CN 101000051 A CN101000051 A CN 101000051A
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- Prior art keywords
- gas temperature
- extraneous gas
- boundary value
- compressor
- motor
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- 238000000034 method Methods 0.000 title claims description 16
- 239000003507 refrigerant Substances 0.000 claims description 10
- 238000007599 discharging Methods 0.000 claims description 5
- 238000012544 monitoring process Methods 0.000 claims description 2
- 230000000052 comparative effect Effects 0.000 abstract description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 230000001276 controlling effect Effects 0.000 description 12
- 230000001105 regulatory effect Effects 0.000 description 11
- 238000001514 detection method Methods 0.000 description 9
- 238000004364 calculation method Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 239000003381 stabilizer Substances 0.000 description 3
- 230000001133 acceleration Effects 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 230000004304 visual acuity Effects 0.000 description 2
- 210000001367 artery Anatomy 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000005764 inhibitory process Effects 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
- 210000003462 vein Anatomy 0.000 description 1
Images
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
- F04B49/06—Control using electricity
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B35/00—Piston pumps specially adapted for elastic fluids and characterised by the driving means to their working members, or by combination with, or adaptation to, specific driving engines or motors, not otherwise provided for
- F04B35/04—Piston pumps specially adapted for elastic fluids and characterised by the driving means to their working members, or by combination with, or adaptation to, specific driving engines or motors, not otherwise provided for the means being electric
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
- F04B39/0027—Pulsation and noise damping means
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B2203/00—Motor parameters
- F04B2203/02—Motor parameters of rotating electric motors
- F04B2203/0202—Voltage
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B2203/00—Motor parameters
- F04B2203/02—Motor parameters of rotating electric motors
- F04B2203/0207—Torque
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B2207/00—External parameters
- F04B2207/03—External temperature
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Control Of Ac Motors In General (AREA)
- Control Of Motors That Do Not Use Commutators (AREA)
Abstract
A compressor torque control device with a motor is disclosed in the invention, which includes an external gas temperature sensor for detecting external gas temperature, and a control part connecting to the compressor motor for limiting changing of a motor driven voltage based on the external gas temperature detected by the external gas temperature sensor. Thereby, the invention can not only easily set boundary value based on a comparative result of the external gas temperature and a reference temperature, but can inhibit increasing of the production cost and achieve a low cost due to the general external gas temperature sensor for controlling operation of an air conditioner.
Description
Technical field
The present invention relates to a kind of torque control device and method thereof of compressor, relate in particular to and consider that the extraneous gas temperature factor sets the driving voltage boundary value of motor and can carry out the torque control device and the controlling method thereof of the compressor of moment of torsion control.
Background technique
According to compression, the discharging operation of pump, the moment of torsion of compressor is along with angle of swing changes, and changes and causes vibration thereupon the rotating speed of rotor.
Rotating inertia force owing to rotor during high speed is bigger, thereby the variation of rotational speed is less, but the low speed situation below 30Hz is less owing to rotating inertia force, thereby the big more vibration of velocity variations also increases thereupon.
Therefore, measure a position probing time lag when every rotation 30 is spent and detect the revolution variation, and pass through to change the rotating force (moment of torsion) of the regulated quantity of motor driven voltage (PWM duty) with angle of swing adjusting rotor, thereby it is minimum with the inhibition vibration that revolution is changed.
That is, become big and interval that rotating speed diminishes at moment of torsion, by strengthening the driving voltage of regulated quantity increase motor; Diminish and the big interval of rotating speed change at moment of torsion, by reducing the driving voltage that regulated quantity reduces motor.
Because controlling object is whirling vibration, the rotation each time of rotor can be considered one-period, and the variation of the rotation of finishing in the very short time each time is more small, thereby utilizes certain data before once rotating that it is reflected to and carry out learning control in the present Electric Machine Control.Therefore, described adjusting is implemented to finish through about 30 seconds by learning control successively.
When controlling motor when connecting the rectangular wave control signal to inverter circuit, moment of torsion becomes ratio in current of electric, and speed becomes ratio in motor driven voltage.
Though, preferably come control torque by the control current of electric, but when employing utilizes the inverter circuit of rectangular wave control signal, owing to can not directly be controlled to than in the electric current of moment of torsion, and can only be controlled to than in the motor driven voltage of motor speed, even thereby motor driven voltage is identical, current of electric also might be different with load.
And, since moment of torsion finish compressed action, beginning discharging operation place reaches peak value, sharply reduce after this, and every rotation 30 degree of velocity variations detect once, this time resolving power that causes the torque peak place a little less than, thereby be difficult to follow the tracks of and detect.
Therefore, be to be difficult to the control current peak only, thereby need take to force to stop compressor operating, cause measures such as excess current to prevent that Peak current is too high in order to improve control efficiency by velocity variations.
As mentioned above, owing to can only and be subjected to the restriction of time resolving power according to the indirect control torque of motor driven voltage, more ideally control torque is unlikely from principle.
Therefore, can only reduce control efficiency slightly and be provided for limiting the boundary value (Limiter) of motor driven voltage amplitude of variation, make Electric Machine Control become stable.
Japan's publication " 2004-245215 number (torque control device and torque control method) " discloses the technology of utilizing described boundary value to carry out moment of torsion control.The method of this patent documentation control torque detects the discharge temperature (S11) of present compressor as shown in Figure 1; Parameters such as comparative result according to operating mode (freeze or heat), the operation frequency of compressor and compressor discharge temperature that is detected and targeted compression machine temperature are determined regulated quantity border value data (S12); Judge then whether whether operation frequency surpass 20 (S113) in variation and regulated quantity boundary value; Judged result if boundary value surpasses 20, then is set at 20 (S14) with this boundary value (TON LMT).Then, in order finally to prevent to set unsuitable value according to above-mentioned data boundary regulating method, externally store the moment of torsion upper control limits value of setting according to refrigerating operaton, heating operation, operation frequency in the storage (ROM) in advance, and regulating and controlling amount boundary value is no more than this value (S15).
But,, need consider a lot of parameters if will determine boundary value, and need test and establishment table or calculating formula under various conditions, thereby the new machine of every exploitation all needs a lot of time and efforts according to above-mentioned citing document.
In addition, as changing the once motor driven voltage of rotation according to circuit and its peak value of being used for detecting the current of electric peak value in another citing document Japan's publication " 2001-119981 number (driving-controlling device of compressor and air conditioner) ", and regulate reduction value.But,, thereby have the problem that increases cost of production because need be provided for detecting the circuit of current peak.
Summary of the invention
The present invention proposes in order to solve aforesaid problem, and its purpose is to provide a kind of and simply sets boundary value according to the extraneous gas temperature, can realize the compressor torque control gear and the controlling method thereof of cheap price simultaneously.
To achieve these goals according to the compressor torque control gear with motor provided by the present invention, comprise the extraneous gas temperature transducer that is used to monitor the extraneous gas temperature, be switched to the control device of the motor driven voltage variable quantity of described compressor electric motor according to the extraneous gas temperature limitation of being monitored by described extraneous gas temperature transducer.
And when described extraneous gas temperature is high more, described control device makes the boundary value of setting more little, and this boundary value is used to limit the variable quantity of described motor driven voltage.
And described control device when described extraneous gas temperature is not more than reference temperature, is set at second boundary value greater than described first boundary value when described extraneous gas temperature is set at first boundary value during greater than reference temperature.
And described first boundary value is about 1/4 of second boundary value.
According to the compressor torque controlling method with motor provided by the present invention, comprise step to achieve these goals: monitoring extraneous gas temperature; Be switched to the motor driven voltage variable quantity of described compressor electric motor according to the extraneous gas temperature limitation of being monitored; Drive described compressor electric motor according to the motor driven voltage that is limited.
And, limit described motor driven voltage variable quantity and comprise step: more described extraneous gas temperature and reference temperature; If described extraneous gas temperature then is set at first boundary value greater than described reference temperature; If described extraneous gas temperature is not more than reference temperature, then be set at second boundary value greater than described first boundary value.
And the step of described restriction motor driven voltage variable quantity is to reduce current of electric during from described compressor discharging refrigerant, and increases current of electric during compressed refrigerant.
Description of drawings
Fig. 1 is a precedence diagram of setting boundary value according to prior art;
Fig. 2 a is the block diagram according to compressor torque control gear provided by the present invention;
Fig. 2 b is the foundation schematic representation that is used to illustrate the compressor torque controlling method provided by the present invention;
Fig. 2 c is a precedence diagram of setting boundary value according to the extraneous gas temperature according to provided by the present invention;
Fig. 2 d limits the operation curve figure of motor driven voltage variable quantity for the boundary value that sets according to basis provided by the present invention;
Fig. 3 does not carry out moment of torsion when control plotted curve at the extraneous gas temperature and the Peak current relation of each operation frequency for expression;
Fig. 4 carries out moment of torsion when control plotted curve at the extraneous gas temperature and the Peak current relation of each operation frequency for expression according to the present invention;
Fig. 5 does not carry out moment of torsion when control at the vibration of the refrigerant piping of each operation frequency and the plotted curve of extraneous gas temperature relation for expression;
Fig. 6 carries out moment of torsion when control at the vibration of the refrigerant piping of each operation frequency and the plotted curve of extraneous gas temperature relation for expression according to the present invention;
Velocity variations when Fig. 7 does not carry out the velocity variations in moment of torsion when control for expression and carries out moment of torsion control according to the present invention and the plotted curve of driving voltage variable quantity;
The plotted curve of current of electric when Fig. 8 a does not carry out moment of torsion control for expression;
The plotted curve of current of electric when Fig. 8 b carries out moment of torsion control for expression according to the present invention.
Embodiment
Below, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.
The structured flowchart of the air conditioner that Fig. 2 a is provided for foundation one embodiment of the present of invention.
Compressor electric motor 15 comprises the rotor that does not illustrate in the accompanying drawing, by the rotating machinery compressed refrigerant of rotor driven compressor.
The position detection signal that moment of torsion control device 18 position-based detection units 16 are exported is inferred out the change in torque of load, and the regulated quantity of motor driven voltage is fed to the synthetic portion 21 of output voltage based on the change in torque of being inferred, to regulate the output of inverter driving circuit.At this moment, moment of torsion control device 18 receives by extraneous gas temperature transducer 23 detected extraneous gas temperature, and sets the boundary value of regulated quantity according to this extraneous gas temperature, will be described below this content.
The synthetic portion 21 of output voltage is used to synthesize the regulating voltage data of being imported and outputs to inverter carry-out part 22 with average output voltage several certificate.
Inverter carry-out part 22 is based on the synthetic input of regulating voltage data and average output voltage and the driving voltage that controlling and driving circuit 14 is exported.
The following describes the moment of torsion control procedure of moment of torsion control device 18.
At first, the once rotation of rotor is divided every 30 degree, and will be set at one-period between these 12 dividing regions, the position-based testing signal is at each computation of Period mean value of the same period then.In per 12 positions (position) of once rotation by four adjacent values of front and back being obtained average computational speed.Upper curve by Fig. 7 as can be known, when with the operation of the operation frequency (25Hz) of compressor, the velocity variations amplitude of (Control ON) velocity variations amplitude of (Control OFF) when not carrying out moment of torsion control when carrying out moment of torsion control with respect to target velocity (speed).
Calculate adjacent two speed differences (acceleration) from speed change data, and according to the increase (+) of this speed difference or reduce the duty factor (duty) of 12 positions of (-) increase and decrease.
In view of the above, every rotation 30 degree will be produced the motor driven voltage variable quantity data that increase and decrease motor driven voltage (PWMduty) by speed controlling.The motor driven voltage variable quantity data of so producing are shown in the lower curve of Fig. 7.The motor driven voltage variable quantity is greater than zero, and illustrating corresponding to the operation frequency (for example 30Hz) as Fig. 2 b increases (+); Motor driven voltage (PWM duty) variable quantity illustrates corresponding to the operation frequency (for example 30Hz) as Fig. 2 b to reduce (-) less than zero.
At this moment; handle by boundary value in order to prevent the motor driven voltage variable quantity from excessively increasing; adopt this mode mainly to be because being necessary to prevent takes place to stop phenomenon by the compressor operating that circuit overcurrent protection causes because of excessive increase of the peak value of current of electric, be used to prevent to destroy the switching element of inverter driving circuit simultaneously because of excessive current peak.
Below with reference to the assignment procedure of Fig. 2 c explanation according to boundary value provided by the present invention.
Extraneous gas temperature transducer 23 detects the extraneous gas temperature and is fed to moment of torsion control device 18 (S31), by the extraneous gas temperature (To) of extraneous gas temperature transducer 23 supplies greater than reference temperature (Tr) (S32) whether moment of torsion control device 18 judged, if extraneous gas temperature (To) is greater than reference temperature (Tr), then be set at first boundary value (Ln) (S33), if extraneous gas temperature (To) is not more than reference temperature (Tr), then be set at (S34) greater than second boundary value (Lx) of first boundary value (Ln).At this, first boundary value is 1/4 of about second boundary value.
By the first boundary value (Ln) of setting like this and the variable quantity of second boundary value (Lx) restriction driving voltage.Shown in Fig. 2 d, even second boundary value of setting when predetermined point of observation (A1) driving voltage variable quantity W1 is low greater than the extraneous gas temperature (Lx) also is set at the driving voltage variable quantity second boundary value (Lx).And, even the first boundary value of setting when predetermined point of observation (A2) driving voltage variable quantity W2 is higher greater than the extraneous gas temperature (Ln) also is set at the driving voltage variable quantity first boundary value (Ln).
As mentioned above, be no more than first boundary value (Lx) and second boundary value of setting according to the extraneous gas temperature (Ln), thereby can prevent that the motor driven voltage variable quantity from increasing by restriction motor driven voltage variable quantity.
Fig. 3 is not for carrying out the situation of moment of torsion control, and Fig. 4 is for carrying out the situation of moment of torsion control according to the present invention, is at each operation frequency to represent the curve that concerns between extraneous gas temperature and the Peak current.As shown in Figures 3 and 4, high peak current is big more more for the extraneous gas temperature haply, and peak current level increases on the whole slightly when carrying out moment of torsion control.
Fig. 5 is not for carrying out the situation of moment of torsion control, and Fig. 6 is the situation of carrying out moment of torsion control, is at each operation frequency and represents the vibration of refrigerant piping and the curve of extraneous gas temperature relation.As Fig. 5 and shown in Figure 6, reduced vibration when carrying out moment of torsion control on the whole, reduce the better effects if of vibration when especially operation frequency is low.
The plotted curve of current of electric when the plotted curve of current of electric when Fig. 8 a does not carry out moment of torsion control for expression, Fig. 8 b carry out moment of torsion control for expression according to the present invention.Shown in Fig. 8 a and Fig. 8 b, when carrying out moment of torsion control, as reducing current of electric (P1) discharging refrigerant the time in period of the less moment of torsion of needs, as increasing current of electric (P2) compressed refrigerant the time than the period of high pulling torque, be certain value below by the peak current limit with motor this moment, thereby prevent to stop because of the pressure that excess current causes the phenomenon of compressor operating.
In sum, the present invention not only simply sets boundary value according to the comparative result of extraneous gas temperature and reference temperature; And owing to utilize the common extraneous gas temperature transducer that has of control operation of air-conditioner, thereby suppress the increase of cost of production and realize cheap price.
Claims (7)
1, have a kind of compressor torque control gear of motor, it is characterized in that comprising:
The extraneous gas temperature transducer is to be used to monitor the extraneous gas temperature;
Control device is to be used for being switched to according to the extraneous gas temperature limitation of being monitored by described extraneous gas temperature transducer the motor driven voltage variable quantity of described compressor electric motor.
2, device according to claim 1, it is high more to it is characterized in that working as described extraneous gas temperature, and described control device makes the boundary value of setting more little, and this boundary value is used to limit the variable quantity of described motor driven voltage.
3, device according to claim 2 is characterized in that described control device for when described extraneous gas temperature during greater than reference temperature, is set at first boundary value; When described extraneous gas temperature is not more than reference temperature, be set at second boundary value greater than described first boundary value.
4, device according to claim 3 is characterized in that described first boundary value is about 1/4 of second boundary value.
5, have a kind of compressor torque controlling method of motor, it is characterized in that comprising step:
Monitoring extraneous gas temperature;
Be switched to the motor driven voltage variable quantity of described compressor electric motor according to the extraneous gas temperature limitation of being monitored;
Drive described compressor electric motor according to confined motor driven voltage.
6, method according to claim 5 is characterized in that limiting described motor driven voltage variable quantity and comprises step: more described extraneous gas temperature and reference temperature; If described extraneous gas temperature then is set at first boundary value greater than described reference temperature; If described extraneous gas temperature is not more than reference temperature, then be set at second boundary value greater than described first boundary value.
7, method according to claim 5 is characterized in that the step of described restriction motor driven voltage variable quantity is: reduce current of electric during from described compressor discharging refrigerant, and increase current of electric during compressed refrigerant.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020060002274A KR20070074299A (en) | 2006-01-09 | 2006-01-09 | Torque control apparatus for compressor and thereof method |
| KR1020060002274 | 2006-01-09 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101000051A true CN101000051A (en) | 2007-07-18 |
| CN100529400C CN100529400C (en) | 2009-08-19 |
Family
ID=38508494
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2006100781514A Expired - Fee Related CN100529400C (en) | 2006-01-09 | 2006-04-28 | Torque control device of compressor and method thereof |
Country Status (2)
| Country | Link |
|---|---|
| KR (1) | KR20070074299A (en) |
| CN (1) | CN100529400C (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104847638A (en) * | 2015-03-17 | 2015-08-19 | 广东美的暖通设备有限公司 | Method and device for starting compressor |
| CN106438294A (en) * | 2015-08-07 | 2017-02-22 | 美克司株式会社 | Air compressor |
| CN108431531A (en) * | 2015-12-16 | 2018-08-21 | 三星电子株式会社 | Refrigerator, the operating method of refrigerator and computer readable recording medium storing program for performing |
-
2006
- 2006-01-09 KR KR1020060002274A patent/KR20070074299A/en active IP Right Grant
- 2006-04-28 CN CNB2006100781514A patent/CN100529400C/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104847638A (en) * | 2015-03-17 | 2015-08-19 | 广东美的暖通设备有限公司 | Method and device for starting compressor |
| CN106438294A (en) * | 2015-08-07 | 2017-02-22 | 美克司株式会社 | Air compressor |
| US10690130B2 (en) | 2015-08-07 | 2020-06-23 | Max Co., Ltd. | Air compressor |
| CN108431531A (en) * | 2015-12-16 | 2018-08-21 | 三星电子株式会社 | Refrigerator, the operating method of refrigerator and computer readable recording medium storing program for performing |
Also Published As
| Publication number | Publication date |
|---|---|
| KR20070074299A (en) | 2007-07-12 |
| CN100529400C (en) | 2009-08-19 |
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Granted publication date: 20090819 Termination date: 20210428 |