CN104410347B - A kind of method for driving compressor and the device for driving compressor - Google Patents
A kind of method for driving compressor and the device for driving compressor Download PDFInfo
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- CN104410347B CN104410347B CN201410515948.0A CN201410515948A CN104410347B CN 104410347 B CN104410347 B CN 104410347B CN 201410515948 A CN201410515948 A CN 201410515948A CN 104410347 B CN104410347 B CN 104410347B
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- 238000000034 method Methods 0.000 title claims abstract description 30
- 238000001514 detection method Methods 0.000 claims description 11
- 230000003247 decreasing effect Effects 0.000 claims description 7
- 238000005516 engineering process Methods 0.000 description 5
- 238000004378 air conditioning Methods 0.000 description 4
- 230000004048 modification Effects 0.000 description 4
- 238000012986 modification Methods 0.000 description 4
- 230000005611 electricity Effects 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004146 energy storage Methods 0.000 description 1
- 238000010297 mechanical methods and process Methods 0.000 description 1
- 230000005226 mechanical processes and functions Effects 0.000 description 1
- 230000010355 oscillation Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P27/00—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage
- H02P27/04—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage using variable-frequency supply voltage, e.g. inverter or converter supply voltage
- H02P27/06—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage using variable-frequency supply voltage, e.g. inverter or converter supply voltage using DC to AC converters or inverters
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P27/00—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage
- H02P27/04—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage using variable-frequency supply voltage, e.g. inverter or converter supply voltage
- H02P27/06—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage using variable-frequency supply voltage, e.g. inverter or converter supply voltage using DC to AC converters or inverters
- H02P27/08—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage using variable-frequency supply voltage, e.g. inverter or converter supply voltage using DC to AC converters or inverters with pulse width modulation
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Control Of Ac Motors In General (AREA)
- Air Conditioning Control Device (AREA)
- Inverter Devices (AREA)
Abstract
The invention discloses a kind of method for driving compressor and the device of driving compressor, for reducing the noise produced when motor runs at high speed by the control to frequency, so as to improve the utilization rate of power supply, strengthen Consumer's Experience.According to the first DC voltage for inputting inverter in the convertible frequency air-conditioner, it is determined that the first driving frequency corresponding with the inverter；In the first time period from the first moment, with first driving frequency, the inverter is controlled to export the first driving voltage for driving motor in the compressor being connected with the inverter；According to the second DC voltage for inputting the inverter, it is determined that the second driving frequency corresponding with the inverter；In the second time period from the second moment after the first finish time of the first time period, with second driving frequency, the inverter is controlled to export the second driving voltage for driving the motor.
Description
Technical field
The present invention relates to electronic technology field, more particularly to a kind of method for driving compressor and the dress for driving compressor
Put.
Background technology
With the continuous development of scientific technology, the whole world is advocated " environmentally friendly low-carbon ", when environmentally friendly convertible frequency air-conditioner enters one newly
Generation, convertible frequency air-conditioner also arises at the historic moment.Convertible frequency air-conditioner refers to that the frequency of the working power of its compressor and the rotating speed of compressor are all
Variable air-conditioning, convertible frequency air-conditioner relies on the change of motor speed in compressor to reach the control to room temperature, therefore compressor is
The heart of air-conditioning, its rotating speed directly influences the service efficiency of air-conditioning, and frequency converter is exactly to be used for controlling and adjusting compressor rotary speed
Control system, be allowed to all the time be in optimal rotary regimes, so as to improve Energy Efficiency Ratio.
In the prior art, the driving of compressor is carried out by the electrically-controlled component in air-conditioning equipment, electrically-controlled component master
Refer to driving plate and governor circuit, the inverter that wherein driving plate includes can produce motor in driving compressor according to voltage
Electric current, so as to control the rotor of compressor to be operated.
Because the frequency of inverter in the prior art is fixed frequency so that motor is produced in rotation process in compressor
Raw noise is larger, while maintaining fixed high-frequency make it that the power consumption of convertible frequency air-conditioner is larger, power utilization rate is relatively low.
The content of the invention
The embodiment of the present invention provides a kind of method for driving compressor and the device for driving compressor, for realizing by dynamic
State changes the frequency of inverter to reduce noise of the motor of compressor in rotation process.
A kind of method for driving compressor, applied in convertible frequency air-conditioner, comprises the following steps：
According to the first DC voltage for inputting inverter in the convertible frequency air-conditioner, it is determined that corresponding with the inverter first
Driving frequency；
In the first time period from the first moment, with first driving frequency, controlling the inverter to export is used for
Drive the first driving voltage of motor in the compressor being connected with the inverter；
According to the second DC voltage for inputting the inverter, it is determined that the second driving frequency corresponding with the inverter；
In the second time period from the second moment after the first finish time of the first time period, with described second
Driving frequency, controls the inverter to export the second driving voltage for driving the motor.
On the other hand, this application provides a kind of device of driving compressor, including：
A kind of device for driving compressor, applied in convertible frequency air-conditioner, including：
Determining module, for according to the first DC voltage for inputting inverter in the convertible frequency air-conditioner, it is determined that with it is described inverse
Become corresponding first driving frequency of device；
Output module, in the first time period from the first moment, with first driving frequency, is controlled described inverse
Become the first driving voltage that device exports motor in the compressor being connected for driving with the inverter；
The determining module is additionally operable to according to the second DC voltage for inputting the inverter, it is determined that with the inverter pair
The second driving frequency answered；
The output module is additionally operable to second from the second moment after the first finish time of the first time period
In period, with second driving frequency, the inverter is controlled to export the second driving voltage for driving the motor.
Said one or multiple technical schemes in the embodiment of the present application, are at least imitated with following one or more technologies
Really：
In the technical scheme of the application, by inputting the first DC voltage to inverter so that inverter correspondence first is driven
Dynamic frequency, so that in first time period, the first driving voltage can be exported with the first driving frequency control inverter, so as to right
Motor in compressor is driven, and in second time period, can be used and be driven different from the second of the first driving frequency
Dynamic frequency control inverter exports the second driving voltage, so as to drive the motor of compressor to be operated.Due to the drive of inverter
Dynamic frequency is in dynamic change state, therefore, in the motor rotation process of driving compressor, can be subtracted by the control to frequency
The noise that few motor is produced when running at high speed, improves the utilization rate of power supply, strengthens Consumer's Experience.
Brief description of the drawings
Fig. 1 is the method flow diagram of driving compressor in application embodiment one；
Fig. 2 is the structural representation of the device of driving compressor in application embodiment two.
Embodiment
A kind of device for driving compressor method and driving compressor is provided in the embodiment of the present application, for by frequency
The control of rate reduces the noise produced when motor runs at high speed, so as to improve the utilization rate of power supply, improves Consumer's Experience.
In order to solve the above-mentioned technical problem, the technical scheme general thought that the application is provided is as follows：
According to the first DC voltage for inputting inverter in the convertible frequency air-conditioner, it is determined that corresponding with the inverter first
Driving frequency；
In the first time period from the first moment, with first driving frequency, controlling the inverter to export is used for
Drive the first driving voltage of motor in the compressor being connected with the inverter；
According to the second DC voltage for inputting the inverter, it is determined that the second driving frequency corresponding with the inverter；
In the second time period from the second moment after the first finish time of the first time period, with described second
Driving frequency, controls the inverter to export the second driving voltage for driving the motor.
In the technical scheme of the application, by inputting the first DC voltage to inverter so that inverter correspondence first is driven
Dynamic frequency, so that in first time period, the first driving voltage can be exported with the first driving frequency control inverter, so as to right
Motor in compressor is driven, and in second time period, can be used and be driven different from the second of the first driving frequency
Dynamic frequency control inverter exports the second driving voltage, so as to drive the motor of compressor to be operated.Due to the drive of inverter
Dynamic frequency is in dynamic change state, therefore, in the motor rotation process of driving compressor, can be subtracted by the control to frequency
The noise that few motor is produced when running at high speed, so as to improve the utilization rate of power supply, improves Consumer's Experience.
To make the purpose, technical scheme and 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
A part of embodiment of the present invention, rather than whole embodiments.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.
The terms "and/or", only a kind of incidence relation for describing affiliated partner, represents there may be three kinds of passes
System, for example, A and/or B, can be represented：Individualism A, while there is A and B, these three situations of individualism B.In addition, herein
Middle character "/", it is a kind of relation of "or" to typically represent forward-backward correlation object.
Embodiment one：
The application first aspect provides a kind of method for driving compressor, refers to Fig. 1, including：
S1：According to the first DC voltage for inputting inverter in the convertible frequency air-conditioner, it is determined that corresponding with the inverter
First driving frequency.
S2：In the first time period from the first moment, with first driving frequency, the inverter output is controlled to use
The first driving voltage of motor in the compressor that driving is connected with the inverter；
S3：According to the second DC voltage for inputting the inverter, it is determined that the second driving frequency corresponding with the inverter
Rate.
S4：In the second time period from the second moment after the first finish time of the first time period, with described
Second driving frequency, controls the inverter to export the second driving voltage for driving the motor.
First, the first DC voltage of input can be obtained by the input interface section of inverter, the DC current can
To be the switch that is connected with inverter of input determined by pulse width modulation (Pulse-Width Modulation, PWM)
The voltage of power supply, may thereby determine that the first driving frequency corresponding with inverter.Wherein, the first driving frequency can be not super
8000Hz frequency is crossed, such as the first driving frequency can be 4000Hz, 6000Hz or 7000Hz.
In actual implementation process, the process in inverter for DC converting is by MOS switch pipe and energy storage inductor group
Into voltage conversion circuit, metal-oxide-semiconductor is driven to do switch motion after push-pull amplifier amplifies by the pulse of input so that direct current
Voltage carries out discharge and recharge to inductance, and the other end of such inductance is with regard to that can obtain alternating voltage.
Generally, in actual test, after PWM ripples are loaded into armature of direct current motor two ends, armature voltage waveform just occurs
Change：High level continues after T1, is rapidly decreased to negative electricity (very little), then rise very rapidly up at armature back-emf voltage, it is slow under
Drop, when starting with continueing to next cycle, since T1 high level, iterative cycles.Now, armature voltage should be high level
The average value of T1 and back-emf in a cycle.The size of the average value is relevant with PWM wave frequency rates, and the dutycycle of high level has
Close.
In the embodiment of the present invention, before S1, the first work electricity needed for present load in convertible frequency air-conditioner can also be detected
Pressure, so as to according to the first operating voltage, it is determined that the first DC voltage of input inverter.For example, according to the load of detection
Required operating voltage adjusts PWM ripples, improves the driving frequency of inverter, to drive the motor of compressor.
The frequency of inverter is higher in principle, and efficiency is also higher, but the requirement to some components is also accordingly improved.Example
Such as, high frequency magnetic core, if the parameter of also fast recovery diode is undesirable, efficiency can conversely be reduced.In addition, frequency
Too high, it is contemplated that resonance problems, these can all directly affect efficiency.
Next, in the second DC voltage according to input inverter, it may be determined that corresponding with inverter, different from the
Second driving frequency of one driving frequency.Specifically, it is determined that before the second driving frequency, can be by detecting present load institute
The second operating voltage needed, carrys out the second DC voltage of control input inverter, so that will corresponding with the second DC voltage the
Two driving frequencies as the motor of compressor driving frequency.
In the embodiment of the present invention, the first driving frequency corresponding with inverter and the second driving can be located at same preset
Frequency in frequency range, the predeterminated frequency scope can be no greater than 8000Hz.Then the second driving frequency can also take not high
Any frequency in 8000Hz 4000Hz, 6000Hz or 7000Hz.Because the first driving frequency and the second driving frequency can
To take frequency values different in the range of the predeterminated frequency respectively, therefore it is easy to control the driving frequency of inverter can be default one
Dynamically changed in frequency range.
It is determined that after the second driving frequency, performing S4, i.e. the second moment after the first finish time of first time period
In the second time period risen, control inverter exports the second driving voltage.Then compressor is being driven using second driving voltage
Motor when, the slewing rate of motor will be directly proportional to the second driving frequency in second time period.
In the embodiment of the present invention, within continuous two extremely short periods, by using the first different driving frequencies
Inverter is controlled respectively with the second driving frequency, so that the frequency of output AC voltage is differed, therefore can reduce driving
Electromagnetic noise or electric and magnetic oscillation during compressor electric motor, improve the utilization rate of power supply.
In actual mechanical process, driving frequency corresponding with inverter in each period can be detected in real time, with
It is easy to control and adjust in time the carrier frequency of input inverter, changes corresponding driving frequency, so that preferably controlling
Make the running of the direct voltage drive motor of output.Specifically, can be corresponding with inverter in detection the i-th period of acquisition
Whether the i-th driving frequency is more than or equal to the corresponding peak frequency of predeterminated frequency scope, and i is positive integer；If being more than or equal to,
In the j period after the i periods, i-th driving frequency is decreased to according to first method to preset more than or equal to second
I-th+j driving frequencies of threshold value, wherein the second predetermined threshold value is the corresponding minimum value of predeterminated frequency scope, such as 4000Hz.This
When first method can refer to the mode of linear decrease, i.e., when reaching the maximum in the range of predeterminated frequency, can control
Driving frequency corresponding with inverter adjusts frequency in the way of linear decrease.
For example, the first predetermined threshold value set is 8000Hz, the second predetermined threshold value is 3000Hz, if the i-th driving measured
Frequency is 8000Hz, then the corresponding i+1 driving frequency of inverter in the i+1 period can be adjusted for 7000Hz, when i-th+2
Between in section corresponding the i-th+2 driving frequencies of inverter be 6000Hz ... until the i-th+j periods corresponding i-th+j drivings frequency
Rate is minimum value corresponding not less than predeterminated frequency scope, such as 4000HZ.
Optionally, in the embodiment of the present invention, the i-th driving frequency is being decreased to the i-th+j driving frequencies according to first method
Afterwards, the i-th+j driving frequencies can also gradually be increased according to linear mode, for example, carrying out in a period of time
Increase, then reduce again within two periods etc..Therefore in control process, the corresponding driving frequency of inverter can be one
Linear mode increasing or decreasing in the section time, or, if the time is longer, the corresponding driving frequency of inverter in whole process
It is in nonlinear change that rate, which can also be, so that the motor preferably in driving compressor, so as to reduce because fixed high frequency is made
Into motor operation course in noise large effect, improve user experience.
Embodiment two：
Input module 201 and output mould can be included by referring to the device of the driving compressor in Fig. 2, the embodiment of the present application
Block 202.
The input module 201 can be used for the first DC voltage according to inverter in the input convertible frequency air-conditioner, really
Fixed the first driving frequency corresponding with the inverter.
The output module 202 can be used in the first time period from the first moment, with first driving frequency,
The inverter is controlled to export the first driving voltage for driving motor in the compressor being connected with the inverter.
The input module 201 can be also used for according to the second DC voltage for inputting the inverter, it is determined that with it is described
Corresponding second driving frequency of inverter.
The output module 202 can be also used for from the second moment after the first finish time of the first time period
Second time period in, with second driving frequency, control the inverter to export for driving the second of the motor to drive
Dynamic voltage.
Optionally, in the embodiment of the present invention, described device also includes：First detection unit, is detected in the convertible frequency air-conditioner
The first operating voltage needed for present load, and according to first operating voltage, it is determined that inputting described the of the inverter
One DC voltage.
Optionally, in the embodiment of the present invention, first detection can be also used for detecting the convertible frequency air-conditioner present load
The second current desired operating voltage, and according to second operating voltage, it is determined that input the inverter described second is straight
Flow voltage.
Optionally, in the embodiment of the present invention, first driving frequency and second driving frequency are in default
Frequency in frequency range, and first driving frequency is different from the second driving frequency.
Optionally, in the embodiment of the present invention, described device can also include：
Second detection unit, detection obtains whether the i-th driving frequency corresponding with the inverter in the i-th period is more than
Equal to the first predetermined threshold value；Wherein, first predetermined threshold value is the corresponding peak frequency of the predeterminated frequency scope, and i is just
Integer；
Control unit, if being more than or equal to first predetermined threshold value for i-th driving frequency, at described i-th
Between in j period after section, i-th driving frequency is decreased to according to first method to be more than or equal to the second predetermined threshold value
The i-th+j driving frequencies, second predetermined threshold value be the corresponding minimum value of the predeterminated frequency scope.
, but those skilled in the art once know basic creation although preferred embodiments of the present invention have been described
Property concept, then can make other change and modification to these embodiments.So, appended claims are intended to be construed to include excellent
Select embodiment and fall into having altered and changing for the scope of the invention.
Obviously, those skilled in the art can carry out the essence of various changes and modification without departing from the present invention to the present invention
God and scope.So, if these modifications and variations of the present invention 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 including these changes and modification.
Claims (8)
1. a kind of method for driving compressor, applied in convertible frequency air-conditioner, it is characterised in that methods described includes：
According to the first DC voltage for inputting inverter in the convertible frequency air-conditioner, it is determined that the first driving corresponding with the inverter
Frequency；
In the first time period from the first moment, with first driving frequency, the inverter is controlled to export for driving
First driving voltage of motor in the compressor being connected with the inverter；
According to the second DC voltage for inputting the inverter, it is determined that the second driving frequency corresponding with the inverter；
In the second time period from the second moment after the first finish time of the first time period, with the described second driving
Frequency, controls the inverter to export the second driving voltage for driving the motor；
Detection obtains whether the i-th driving frequency corresponding with the inverter in the i-th period is more than or equal to the first predetermined threshold value；
Wherein, first predetermined threshold value is the corresponding peak frequency of the predeterminated frequency scope, and i is positive integer；
If being more than or equal to, within the j period after i-th period, frequency is driven by described i-th according to first method
Rate is decreased to the i-th+j driving frequencies more than or equal to the second predetermined threshold value, and second predetermined threshold value is the predeterminated frequency model
Enclose corresponding minimum value.
2. the method as described in claim 1, it is characterised in that straight according to input inverter in the convertible frequency air-conditioner first
Voltage is flowed, it is determined that before the first driving frequency corresponding with the inverter, methods described also includes：
Detect the first operating voltage needed for present load in the convertible frequency air-conditioner；
According to first operating voltage, it is determined that inputting first DC voltage of the inverter.
3. method as claimed in claim 2, it is characterised in that according to the second DC voltage for inputting the inverter, really
Before fixed the second driving frequency corresponding with the inverter, methods described also includes：
Detect the second current desired operating voltage of the convertible frequency air-conditioner present load；
According to second operating voltage, it is determined that inputting second DC voltage of the inverter.
4. the method as described in any claims of claim 1-3, it is characterised in that first driving frequency and described second is driven
Dynamic frequency is the frequency in the range of predeterminated frequency, and first driving frequency is different from the second driving frequency.
5. a kind of device of driving compressor, applied in convertible frequency air-conditioner, it is characterised in that described device includes：
Input module, for according to the first DC voltage for inputting inverter in the convertible frequency air-conditioner, it is determined that with the inverter
Corresponding first driving frequency；
Output module, in the first time period from the first moment, with first driving frequency, controls the inverter
Export the first driving voltage for driving motor in the compressor being connected with the inverter；
The input module is additionally operable to according to the second DC voltage for inputting the inverter, it is determined that corresponding with the inverter
Second driving frequency；
The output module is additionally operable to the second time from the second moment after the first finish time of the first time period
In section, with second driving frequency, the inverter is controlled to export the second driving voltage for driving the motor；
Second detection unit, detection obtains whether the i-th driving frequency corresponding with the inverter in the i-th period is more than or equal to
First predetermined threshold value；Wherein, first predetermined threshold value is the corresponding peak frequency of the predeterminated frequency scope, and i is positive integer；
Control unit, if being more than or equal to first predetermined threshold value for i-th driving frequency, in i-th period
In the j period afterwards, i-th driving frequency is decreased to the more than or equal to the second predetermined threshold value according to first method
I+j driving frequencies, second predetermined threshold value is the corresponding minimum value of the predeterminated frequency scope.
6. device as claimed in claim 5, it is characterised in that described device also includes：
First detection unit, detects the first operating voltage needed for present load in the convertible frequency air-conditioner, and according to described first
Operating voltage, it is determined that inputting first DC voltage of the inverter.
7. device as claimed in claim 6, it is characterised in that first detection unit is additionally operable to detect the convertible frequency air-conditioner
The second current desired operating voltage of present load, and according to second operating voltage, it is determined that inputting the institute of the inverter
State the second DC voltage.
8. the device as described in any claims of claim 5-7, it is characterised in that first driving frequency and described second is driven
Dynamic frequency is the frequency in the range of predeterminated frequency, and first driving frequency is different from the second driving frequency.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410515948.0A CN104410347B (en) | 2014-09-29 | 2014-09-29 | A kind of method for driving compressor and the device for driving compressor |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410515948.0A CN104410347B (en) | 2014-09-29 | 2014-09-29 | A kind of method for driving compressor and the device for driving compressor |
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| CN104410347A CN104410347A (en) | 2015-03-11 |
| CN104410347B true CN104410347B (en) | 2017-10-17 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP2019143900A (en) * | 2018-02-21 | 2019-08-29 | パナソニックＩｐマネジメント株式会社 | Freezing device |
| CN112910368B (en) * | 2018-12-29 | 2023-03-24 | 追觅创新科技(苏州)有限公司 | Method and device for driving brush motor and computer readable storage medium |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1084627A (en) * | 1992-06-17 | 1994-03-30 | 大金工业株式会社 | Operation control device for air conditioner |
| CN1543047A (en) * | 2003-03-25 | 2004-11-03 | ���µ�����ҵ��ʽ���� | Inverter control device for motor drive and air conditioner using same |
| CN102575657A (en) * | 2009-11-18 | 2012-07-11 | Lg电子株式会社 | Linear compressor |
-
2014
- 2014-09-29 CN CN201410515948.0A patent/CN104410347B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1084627A (en) * | 1992-06-17 | 1994-03-30 | 大金工业株式会社 | Operation control device for air conditioner |
| CN1543047A (en) * | 2003-03-25 | 2004-11-03 | ���µ�����ҵ��ʽ���� | Inverter control device for motor drive and air conditioner using same |
| CN102575657A (en) * | 2009-11-18 | 2012-07-11 | Lg电子株式会社 | Linear compressor |
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| CN104410347A (en) | 2015-03-11 |
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