CN108005890B - A kind of permanent magnet synchronous motor carrier frequency control method and system - Google Patents
A kind of permanent magnet synchronous motor carrier frequency control method and system Download PDFInfo
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- CN108005890B CN108005890B CN201711172834.0A CN201711172834A CN108005890B CN 108005890 B CN108005890 B CN 108005890B CN 201711172834 A CN201711172834 A CN 201711172834A CN 108005890 B CN108005890 B CN 108005890B
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- 230000001360 synchronised effect Effects 0.000 title claims abstract description 28
- 238000000034 method Methods 0.000 title claims abstract description 20
- 230000006835 compression Effects 0.000 claims description 3
- 238000007906 compression Methods 0.000 claims description 3
- 230000001105 regulatory effect Effects 0.000 claims description 3
- 238000000465 moulding Methods 0.000 claims 1
- 230000005611 electricity Effects 0.000 abstract description 3
- 238000010586 diagram Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
- 230000000737 periodic effect Effects 0.000 description 3
- 238000001228 spectrum Methods 0.000 description 3
- 230000001276 controlling effect Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 238000007792 addition Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000032258 transport Effects 0.000 description 1
Classifications
-
- 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
-
- 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
- F04B49/20—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 by changing the driving speed
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Control Of Ac Motors In General (AREA)
- Control Of Positive-Displacement Pumps (AREA)
Abstract
The invention discloses a kind of permanent magnet synchronous motor carrier frequency control method and systems, on the compressor after electricity operation, it is run using setting fixed frequency as driven compressor carrier frequency, and judge whether compressor operating frequency is consistent with target operating frequency, if so, adjusting driven compressor carrier frequency is to adjust carrier frequency F=2Nf；Wherein, f is the target operating frequency, and n is positive integer, if it is not, then keeping to set fixed frequency as driven compressor carrier frequency.After the control to compressor enters driven compressor carrier frequency self-regulation mode, when compressor operating frequency reaches target operating frequency, it adjusts driven compressor carrier frequency and compressor operating frequency is in even multiples relationship, so that driven compressor carrier frequency is synchronous with compressor operating frequency, so as to improve compressor running noises, EMC performance and noiseproof feature are improved, product quality is helped to improve.
Description
Technical field
The invention belongs to motor control technology fields, specifically, being to be related to a kind of permanent magnet synchronous motor carrier frequency controlling party
Method and system.
Background technique
In the control fields such as compressor of air conditioner, freezer compressor, motor for washer, fan motor, permanent-magnet synchronous
Compressor control is most important drive control, accounts about the action of control chip 70%.
In general, between compressor running frequency (namely compressor rotary speed) at runtime and the driving carrier frequency of compressor
It is that there is no association and random, the compressor drives of compressor operating frequency f as shown in Figure 3 and driven compressor control
The schematic diagram of dynamic load frequency f1, on the starting point a and end point b of a cycle of compressor operating frequency, driven compressor is carried
Synchronized relation is not present in frequency therewith, and this asynchronous relationship industry personnel can't pay close attention to, because will not make to compressor control
At apparent negative effect, product design index can satisfy national standard.
But it has been investigated that this asynchronous relationship will lead to and be easy to produce periodic noise spectrum, influence equipment
EMC(Electro Magnetic Compatibility, Electro Magnetic Compatibility) performance and noiseproof feature, and because in current over-zero
Near point, corresponding carrier cycle is possible to sample the current signal on the zero crossing left side, it is also possible to sample on the right of zero crossing
Signal, and the sampled signal on the right is actually the signal of next current cycle, this belongs to garbage signal to this period, this
The accuracy that will affect frequency control, is unfavorable for the promotion of product quality.
Summary of the invention
This application provides a kind of permanent magnet synchronous motor carrier frequency control method and systems, by constructing compressor operating frequency
With the proportionate relationship between driven compressor carrier frequency, driven compressor carrier frequency is adjusted according to compressor operating frequency and realizes the two
It is synchronous, the asynchronous noise problem that will appear both is solved, product more Precise control, more low noise requirement and smaller are met
EMC harmonic wave influences, and enhances product performance.
In order to realize the above technical effect, the application is achieved using following technical scheme:
It is proposed a kind of permanent magnet synchronous motor carrier frequency control method, comprising: judge whether compressor operating frequency transports with target
Line frequency is consistent；If so, adjusting driven compressor carrier frequency is to adjust carrier frequency F=2Nf；Wherein, f is the target operating frequency, n
For positive integer；If it is not, keeping to set fixed frequency as driven compressor carrier frequency.
It is proposed a kind of permanent magnet synchronous motor carrier frequency control system, including carrier frequency self-regulation judgment module, carrier frequency self-regulation mould
Block and carrier frequency control module；The carrier frequency is self-regulated judgment module, for judge compressor operating frequency whether with object run
Frequency is consistent；The module if so, carrier frequency is self-regulated adjusts carrier frequency F=2nf for adjusting driven compressor carrier frequency；Its
In, f is the object run carrier frequency, and n is positive integer；If it is not, the then carrier frequency control module, fixed frequency is set for keeping
Rate is as driven compressor carrier frequency.
Compared with prior art, the advantages of the application and good effect is: the permanent magnet synchronous motor carrier frequency that the application proposes
In control method and system, on the compressor after electricity work, when compressor operating frequency does not reach target frequency, with setting
Fixed frequency is run as driven compressor carrier frequency, after judging that compressor operating frequency reaches target frequency, then adjusts compression
It is in even multiples relationship that machine, which drives carrier frequency and compressor operating frequency, so that driven compressor carrier frequency and compressor operating frequency are same
Step, that is, at one cycle starting point and end point of compressor operating frequency curve, driven compressor carrier frequency curve with
Compressor operating frequency curve is to be overlapped in zero crossing, and such bring effect is each driven compressor radio-cycle
It is interior, periodic noise spectrum will not be generated, and then can be improved the EMC performance and noiseproof feature of equipment, current sampling signal,
Controlling signal etc. is all useful signal, realizes being precisely controlled for frequency control, is conducive to the quality for promoting product.
After the detailed description of the application embodiment is read in conjunction with the figure, other features and advantages of the application will become more
Add clear.
Detailed description of the invention
Fig. 1 is the method flow diagram for the permanent magnet synchronous motor carrier frequency control method that the application proposes；
Fig. 2 is the system block diagram for the permanent magnet synchronous motor carrier frequency control system that the application proposes；
Fig. 3 is compressor operating frequency in the prior art and driven compressor carrier frequency curve synoptic diagram；
Fig. 4 is the compressor operating frequency after the permanent magnet synchronous motor carrier frequency control method control proposed by the application
With adjusting carrier frequency curve synoptic diagram；
Fig. 5 is that carrier frequency setting range exemplary diagram is adjusted in the application.
Specific embodiment
The specific embodiment of the application is described in more detail with reference to the accompanying drawing.
The permanent magnet synchronous motor carrier frequency control method that the application proposes, as shown in Figure 1, including the following steps:
Step S11: judge whether compressor operating frequency is consistent with target operating frequency.
After compressor powers in the product, compressor operating frequency is gradually risen up to target operating frequency, in compressor
When running frequency does not reach target operating frequency, driven compressor carrier frequency reaches mesh in judgement using setting fixed frequency F0
After marking running frequency,
Step S12: adjusting driven compressor carrier frequency is to adjust carrier frequency F=2nf；Wherein, f is the target operating frequency, n
For positive integer.
After compressor operating frequency rises to target operating frequency, adjusting driven compressor carrier frequency is that an adjusting carries
Frequently, adjusting carrier frequency F=2nf, f are current compressor running frequency namely target operating frequency, and adjusting carrier frequency is the target
The even multiples relationship of running frequency, so that driven compressor carrier frequency is synchronous with compressor operating frequency, that is, transporting in compressor
At one cycle starting point and end point of line frequency curve, driven compressor carrier frequency curve and compressor operating frequency curve
It is to be overlapped in zero crossing, as shown in figure 4, bring effect in this way is in each driven compressor radio-cycle, electric current is adopted
Sample signal, control signal etc. are all the useful signals in this period, will not sample the signal of adjacent periods, will not generate
Periodic noise spectrum, and then can be improved the EMC performance and noiseproof feature of equipment, realize being precisely controlled for frequency control,
Be conducive to be promoted the quality of product.
In the embodiment of the present application, step S11 and step S12 are defined as driven compressor carrier frequency self-regulation mode phases, and
Whether compressor, which enters mode phases execution, then has following judgment step S10: judging whether compressor operating frequency reaches
To threshold frequency；Namely a threshold frequency is defined, and on the compressor after electricity, in compressor operating frequency uphill process,
When compressor operating frequency does not rise to threshold frequency, to set fixed frequency as driven compressor carrier frequency, rising to
After threshold frequency, just enter driven compressor carrier frequency self-regulation mode phases.
When comprehensively considering the factors such as switching power loss, setting adjusts carrier frequency and compressor operating frequency meets following relationship:
When compressor operating frequency is less than first frequency, adjusting carrier frequency is the first secured adjusted carrier frequency；Compressor operating frequency is greater than the
One frequency and when being less than second frequency, adjusts carrier frequency and compressor operating frequency and meets F=af；A is setting slope；Compressor fortune
When line frequency is greater than second frequency, adjusting carrier frequency is the second secured adjusted carrier frequency；Wherein, the second secured adjusted carrier frequency is greater than first
Secured adjusted carrier frequency.As shown in figure 5, adjusting carrier frequency is 3000HZ when compressor operating frequency is less than 20HZ；When compressor is transported
When line frequency is greater than 20HZ less than 60HZ, adjusts carrier frequency and take and 50 times of proportionate relationships of compressor operating frequency namely a=50；Work as pressure
When contracting machine running frequency is greater than 60HZ, adjusting carrier frequency is 5000HZ；Certainly above-mentioned to first have to be limited to adjusting frequency and compressor
Running frequency is under conditions of even multiples relationship.
Based on permanent magnet synchronous motor carrier frequency control method set forth above, the application also proposes that a kind of permanent magnet synchronous electric is airborne
Frequency control system, as shown in Fig. 2, including carrier frequency self-regulation judgment module 21, carrier frequency self-regulation module 22 and carrier frequency control module
23。
Carrier frequency self-regulation judgment module 21 is for judging whether compressor operating frequency is consistent with target operating frequency；If
It is that then carrier frequency self-regulation module 22 adjusts carrier frequency F=2nf for adjusting driven compressor carrier frequency；Wherein, f is object run load
Frequently, n is positive integer；If it is not, then carrier frequency control module 23 is for keeping to set fixed frequency as driven compressor carrier frequency.
The system further includes compressor operating frequency judgment module 24, in the carrier frequency self-regulation judgement pressure of judgment module 21
Before whether contracting machine running frequency is consistent with target operating frequency, judge whether compressor operating frequency reaches threshold frequency；If
It is that then carrier frequency self-regulation judgment module 21 judges whether compressor operating frequency is consistent with target operating frequency；If it is not, then carrier frequency
Control module 23 is to set fixed frequency as driving carrier frequency in one's power.
The system further includes adjusting carrier frequency setting module 25, for set adjust carrier frequency and compressor operating frequency meet with
Lower relationship: when compressor operating frequency is less than first frequency, adjusting carrier frequency is the first secured adjusted carrier frequency；Compressor operating frequency
When greater than first frequency and being less than second frequency, adjusts carrier frequency and compressor operating frequency meets F=af；A is setting slope；Pressure
When contracting machine running frequency is greater than second frequency, adjusting carrier frequency is the second secured adjusted carrier frequency；Wherein, the second secured adjusted carrier frequency is big
In the first secured adjusted carrier frequency.
Specific system is to the control mode of driven compressor carrier frequency in permanent magnet synchronous motor carrier frequency set forth above
It is described in detail in control method, it will not go into details herein.
In the permanent magnet synchronous motor carrier frequency control method and system that above-mentioned the application proposes, rise in compressor operating frequency
To threshold frequency, driven compressor carrier frequency self-regulation mode is entered to the control of compressor, when compressor operating frequency reaches
After target operating frequency, adjusts driven compressor carrier frequency and compressor operating frequency is in even multiples relationship, so that compressor drives
Dynamic load frequency is synchronous with compressor operating frequency, so as to improve compressor running noises, improves EMC performance and noiseproof feature,
Help to improve product quality.
It should be noted that the above description is not a limitation of the present invention, the present invention is also not limited to the example above,
The variations, modifications, additions or substitutions that those skilled in the art are made within the essential scope of the present invention, are also answered
It belongs to the scope of protection of the present invention.
Claims (6)
1. a kind of permanent magnet synchronous motor carrier frequency control method characterized by comprising
Judge whether compressor operating frequency is consistent with target operating frequency；If so,
Adjusting driven compressor carrier frequency is to adjust carrier frequency F=2Nf；Wherein, f is the target operating frequency, and N is positive integer；If
It is no,
It keeps to set fixed frequency as driven compressor carrier frequency.
2. permanent magnet synchronous motor carrier frequency control method according to claim 1, which is characterized in that judging compressor operation
Before whether frequency is consistent with target operating frequency, the method also includes:
Judge whether the compressor operating frequency reaches threshold frequency, if so, judge compressor operating frequency whether with mesh
It is consistent to mark running frequency；If it is not, then using the setting fixed frequency as the driven compressor carrier frequency.
3. permanent magnet synchronous motor carrier frequency control method according to claim 1, which is characterized in that the adjusting carrier frequency and institute
It states compressor operating frequency and meets following relationship:
When the compressor operating frequency is less than first frequency, the adjusting carrier frequency is the first secured adjusted carrier frequency；
When the compressor operating frequency is greater than the first frequency and is less than second frequency, the adjusting carrier frequency and the compression
Machine running frequency meets F=af；The a is setting slope；
When the compressor operating frequency is greater than the second frequency, the adjusting carrier frequency is the second secured adjusted carrier frequency；Wherein,
The second secured adjusted carrier frequency is greater than the first secured adjusted carrier frequency.
4. a kind of permanent magnet synchronous motor carrier frequency control system, which is characterized in that including carrier frequency self-regulation judgment module, carrier frequency self-regulated
Save module and carrier frequency control module；
The carrier frequency self-regulation judgment module, for judging whether compressor operating frequency is consistent with target operating frequency；If so,
Then
The carrier frequency self-regulation module, adjusts carrier frequency F=2nf for adjusting driven compressor carrier frequency；Wherein, f is the target
Carrier frequency is run, n is positive integer；If it is not, then
The carrier frequency control module, for keeping to set fixed frequency as driven compressor carrier frequency.
5. permanent magnet synchronous motor carrier frequency control system according to claim 4, which is characterized in that the system also includes pressures
Contracting machine running frequency judgment module；
The compressor operating frequency judgment module, for judging compressor operating frequency in carrier frequency self-regulation judgment module
Whether it is consistent with target operating frequency before, judge whether the compressor operating frequency reaches threshold frequency；If so, described
Carrier frequency self-regulation judgment module judges whether compressor operating frequency is consistent with target operating frequency；If it is not, the then carrier frequency control
Molding block is using the setting fixed frequency as driven compressor carrier frequency.
6. permanent magnet synchronous motor carrier frequency control system according to claim 4, which is characterized in that the system also includes tune
Save carrier frequency setting module；
The adjusting carrier frequency setting module meets for setting the adjusting carrier frequency and the compressor operating frequency with ShiShimonoseki
System: when the compressor operating frequency is less than first frequency, the adjusting carrier frequency is the first secured adjusted carrier frequency；
When the compressor operating frequency is greater than the first frequency and is less than second frequency, the adjusting carrier frequency and the compression
Machine running frequency meets F=af；The a is setting slope；
When the compressor operating frequency is greater than the second frequency, the adjusting carrier frequency is the second secured adjusted carrier frequency；Wherein,
The second secured adjusted carrier frequency is greater than the first secured adjusted carrier frequency.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201711172834.0A CN108005890B (en) | 2017-11-22 | 2017-11-22 | A kind of permanent magnet synchronous motor carrier frequency control method and system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201711172834.0A CN108005890B (en) | 2017-11-22 | 2017-11-22 | A kind of permanent magnet synchronous motor carrier frequency control method and system |
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| CN108005890A CN108005890A (en) | 2018-05-08 |
| CN108005890B true CN108005890B (en) | 2019-09-27 |
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| CN110307141B (en) * | 2019-06-05 | 2020-10-16 | 珠海格力节能环保制冷技术研究中心有限公司 | Variable frequency compressor and control method thereof |
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| JPH0274168A (en) * | 1988-09-09 | 1990-03-14 | Komatsu Ltd | Pwm inverter apparatus |
| JP2007110837A (en) * | 2005-10-13 | 2007-04-26 | Denso Corp | Method for estimating magnetic pole position and motor controller |
| CN101917152A (en) * | 2010-07-29 | 2010-12-15 | 宁波奥克斯空调有限公司 | Start-up method of permanent magnet synchronous compressor for inverter air conditioner |
| CN102472532A (en) * | 2009-08-10 | 2012-05-23 | 三菱电机株式会社 | Air conditioner |
| CN102843090A (en) * | 2011-06-21 | 2012-12-26 | 株洲南车时代电气股份有限公司 | Open-loop control method and open-loop control system of permanent magnet synchronous motor based on space vector pulse width modulation (SVPWM) |
| JP5975822B2 (en) * | 2012-09-28 | 2016-08-23 | 株式会社日立製作所 | PWM control method and drive system for AC motor |
| CN106330011A (en) * | 2016-09-05 | 2017-01-11 | 北京新能源汽车股份有限公司 | Electromagnetic interference suppression method and device for motor, motor controller and electric vehicle |
-
2017
- 2017-11-22 CN CN201711172834.0A patent/CN108005890B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0274168A (en) * | 1988-09-09 | 1990-03-14 | Komatsu Ltd | Pwm inverter apparatus |
| JP2007110837A (en) * | 2005-10-13 | 2007-04-26 | Denso Corp | Method for estimating magnetic pole position and motor controller |
| CN102472532A (en) * | 2009-08-10 | 2012-05-23 | 三菱电机株式会社 | Air conditioner |
| CN101917152A (en) * | 2010-07-29 | 2010-12-15 | 宁波奥克斯空调有限公司 | Start-up method of permanent magnet synchronous compressor for inverter air conditioner |
| CN102843090A (en) * | 2011-06-21 | 2012-12-26 | 株洲南车时代电气股份有限公司 | Open-loop control method and open-loop control system of permanent magnet synchronous motor based on space vector pulse width modulation (SVPWM) |
| JP5975822B2 (en) * | 2012-09-28 | 2016-08-23 | 株式会社日立製作所 | PWM control method and drive system for AC motor |
| CN106330011A (en) * | 2016-09-05 | 2017-01-11 | 北京新能源汽车股份有限公司 | Electromagnetic interference suppression method and device for motor, motor controller and electric vehicle |
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Address after: 266100 Zhuzhou Road, Laoshan District, Qingdao, Shandong Province, No. 151 Applicant after: HISENSE (SHANDONG) AIR-CONDITIONING Co.,Ltd. Address before: 266700 Haixin Road, Nancun Town, Pingdu City, Qingdao City, Shandong Province Applicant before: HISENSE (SHANDONG) AIR-CONDITIONING Co.,Ltd. |
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Address after: No.1 Haixin Road, Nancun Town, Pingdu City, Qingdao City, Shandong Province Patentee after: Hisense Air Conditioning Co.,Ltd. Country or region after: China Address before: No. 151, Zhuzhou Road, Laoshan District, Qingdao, Shandong Patentee before: HISENSE (SHANDONG) AIR-CONDITIONING Co.,Ltd. Country or region before: China |
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