CN100343592C - Running controlling apparatus and its method for variable frequency air conditioner - Google Patents
Running controlling apparatus and its method for variable frequency air conditioner Download PDFInfo
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- CN100343592C CN100343592C CNB031298109A CN03129810A CN100343592C CN 100343592 C CN100343592 C CN 100343592C CN B031298109 A CNB031298109 A CN B031298109A CN 03129810 A CN03129810 A CN 03129810A CN 100343592 C CN100343592 C CN 100343592C
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Abstract
The present invention discloses an operation control device of a variable frequency air conditioner, and a method of the operation control device. The device comprises a power supply, a filter, a current transformer, an inverter, a compressor, a miniature controller generating heat water, and a PWM waveform generator for stochastic pulse-width coding and modulating, wherein PWM control signals for the stochastic pulse-width coding and modulating are equivalent to operation frequency which is determined by the miniature controller. The control method comprises the stages that when the power supply is switched on, the heat water is generated; stochastic operation frequency is detected at intervals, wherein the stochastic operation frequency generates along with the generation of the heat water; the PWM control signals for the stochastic pulse-width coding and modulating, which are equivalent to the stochastic operation frequency; are output; the PWM control signals for the stochastic pulse-width coding and modulating are used for controlling the switching on and the switching of the inverter; through the control function of the switch, the compressor is driven. The present invention can reduce high frequency noise generated in a specific region when the compressor is driven, and therefore, the present invention can satisfy the requirements of users largely.
Description
Technical field
The present invention relates to a kind of transducer air conditioning.Relate to a kind of operating control device and method thereof of the high frequency noise transducer air conditioning that takes place in order to reduce transducer air conditioning and to drive furtherly.
Background technology
Introduce the operating control device and the method thereof of traditional frequency conversion air-conditioner below in detail.
Fig. 1 is that the control of traditional frequency conversion air-conditioner constitutes schematic diagram; Fig. 2 is the control operation process schematic diagram that control traditional frequency conversion air-conditioner drives.
As shown in Figure 1, the traditional frequency conversion air-conditioner be by, the supply unit 1 of power supply is provided and reduces the filter 2 of power noise to product; AC power by filter 2 is transformed into the current transformer 3 of dc source; And inverter 4 compositions, wherein inverter 4 makes the power conversion by current transformer 3 become to meet the variable frequency of compressor operation frequency and the AC power of variable voltage.
Above-mentioned transducer air conditioning also comprises: microcontroller 6 and single pulsewidth coding modulation (PWM) generator 7.Wherein, microcontroller 6 output drive signals make 6 power transistors on the inverter 4 take turns to be switched on or switched off, and the running of control transducer air conditioning; Single pulsewidth coding modulation (PWM) generator 7 is to inverter 4 outputs pulsewidth coding modulation (PWM) control signal with operating frequency, and above-mentioned pulsewidth coding modulation (PWM) control signal is by microcontroller 6 outputs.
The driving process of forming transducer air conditioning from above-mentioned control.As shown in Figure 2, if connect power supply (the 100th stage) to product, its electric current is delivered to filter 2 by supply unit 1, removes the noise that is included in AC power.The AC power that is removed noise is delivered to current transformer 3.The AC power that is delivered to current transformer 3 is transformed to dc source, and passes to inverter 4.Pass to the controlled three-phase alternating-current supply that is transformed to of dc source of inverter 4.
On the other hand, single pulsewidth coding modulation (PWM) generator 7 is for dynamo-electric machine output pulse width coded modulation (PWM) control signal of drive compression, and pulsewidth coding modulation (PWM) control signal makes 6 power transistors take turns to be switched on or switched off.At this moment, for the dynamo-electric machine of drive compression, its operating frequency is set in 6 li of microcontrollers (the 110th stage) with identical fixed value.By single pulsewidth coding modulation (PWM) generator 7, to the pulsewidth coding modulation (PWM) control signal (120th stage) of inverter 4 outputs with operating frequency.And along with the pulsewidth coding modulation (PWM) control signal to inverter 4 outputs, compressor electric motor is through driving (the 130th stage) again after three phase inversion.
The frequency that Fig. 3 takes place when being the driving of traditional frequency conversion air-conditioner and the graph of a relation of noise.Connect power supply to transducer air conditioning, for the driving of compressor, with single operating frequency output pulse width coded modulation (PWM) control signal.Frequency noise when at this moment, compressor 5 drives as shown in Figure 3.Shown in frequency noise in, the strong especially high frequency noise band territory of noise has taken place in specific band territory.So it is discontented that the user produces the traditional frequency conversion air-conditioner.
Summary of the invention
Technical problem to be solved by this invention is, a kind of operating control device and method thereof of transducer air conditioning of the specific high frequency noise band territory that can control and reduce the traditional frequency conversion air-conditioner is provided.
The technical solution adopted in the present invention is: a kind of operating control device of transducer air conditioning comprises: the supply unit that power supply is provided; Remove the filter of connecting power noise; To become the current transformer of dc source by the power conversion of filter; Dc source is transformed into the inverter of AC power; Under the switch control action of inverter and compressor driven; Also have: produce the microcontroller that warm water and each fixed cycle are determined operating frequency when connecting power supply, microcontroller is by pulsewidth coding modulation waveform generator and coupled warm water generator constitute at random, wherein the pulsewidth coding modulation waveform generator links to each other with inverter at random, the modulator control signal of pulsewidth coding at random of output is sent into inverter, and the described modulator control signal of pulsewidth coding at random is equivalent to the operating frequency definite by microcontroller.
The progress control method of transducer air conditioning of the present invention is as follows: when connecting power supply, take place the stage of warm water; Each fixed cycle detects the stage of operating frequency at random, and wherein above-mentioned operating frequency at random produces because of the generation of warm water; Output is equivalent to the stage of the modulation (PWM) of the pulsewidth coding at random control signal of above-mentioned operating frequency at random; By the stage of the above-mentioned modulation (PWM) of pulsewidth coding at random control signal control inverter switch; By the control action of above-mentioned switch, the stage of drive compression machine.
The operating control device of transducer air conditioning of the present invention and method thereof have following effect.The high frequency noise that in specific band territory, takes place when the present invention can reduce driven compressor.Therefore, can satisfy the required of user greatly.
Description of drawings
Fig. 1 is that the control of traditional frequency conversion air-conditioner constitutes schematic diagram;
Fig. 2 is the control operation process schematic diagram that control traditional frequency conversion air-conditioner drives;
The frequency that Fig. 3 takes place when being the driving of traditional frequency conversion air-conditioner and the graph of a relation of noise;
Fig. 4 is that the control of transducer air conditioning of the present invention constitutes schematic diagram;
Fig. 5 is the control operation process schematic diagram that control transducer air conditioning of the present invention drives;
Fig. 6 is the frequency that takes place when driving of transducer air conditioning of the present invention and the graph of a relation of noise.
Wherein:
1,10: supply unit 2,20: filter
3,30: unsteady flow 4,40: inverter
5,50: compressor 6,60: microcontroller
7: single pulsewidth coding modulation (PWM) generator 80: warm water generator
90: (PWM) waveform generator is modulated in pulsewidth coding at random
The specific embodiment
Below, be described with reference to the accompanying drawings the operating control device and the method thereof of transducer air conditioning of the present invention.
Fig. 4 is that the control of transducer air conditioning of the present invention constitutes schematic diagram.As shown in Figure 4, the control of transducer air conditioning of the present invention formation comprises: supply unit 10 from power supply to product that connect; Remove the filter 20 of input power noise; AC power by filter 20 is transformed into the current transformer 30 of dc source; And inverter 40, wherein inverter 40 makes the power conversion by current transformer 30 become to meet the variable frequency of compressor operation frequency and the AC power of variable voltage, and provides to compressor.
And transducer air conditioning also comprises microcontroller 60.Wherein, microcontroller 60 output drive signals make 6 power transistors on the inverter 40 take turns to be switched on or switched off, and the running of control transducer air conditioning.Microcontroller 60 comprises: warm water generator 80 and at random pulsewidth coding modulate (PWM) waveform generator 90.The warm water of wherein warm water generator 80 each fixed cycle output; Pulsewidth coding modulation (PWM) waveform generator 90 is exported the modulation of pulsewidth coding at random (PWM) control signal of the operating frequency of determining because of warm water to inverter 40 outputs at random.
In order to remove the high frequency noise that produces when transducer air conditioning drives, its operation control procedure is as follows.
Fig. 5 is the control operation process schematic diagram that control transducer air conditioning of the present invention drives.
If connect power supply to transducer air conditioning, its electric current is delivered to filter 20 by supply unit, and removes the noise that is included in AC power.The AC power that is removed noise is delivered to current transformer 30.The AC power that is delivered to current transformer 30 is transformed into dc source, and dc source is delivered to inverter 40 again.Be delivered to the controlled three-phase alternating-current supply that is transformed to of dc source of inverter 40.
On the other hand, pulsewidth coding modulation (PWM) waveform generator 90 output pulse width coded modulation pwm control signals make 6 power transistors that are arranged in the inversion 40 take turns to be switched on or switched off at random, and then the dynamo-electric machine of drive compression.For this reason, the warm water generator 80 of microcontroller 60 controls makes warm water by warm water generator 80 outputs (the 200th stage); And operating frequency (the 210th stage) is at random determined in the output of warm water.When compressor 50 is driven, and its swing circle reaches after the some cycles, and above-mentioned operating frequency at random is defined as new operating frequency (the 220th stage) once more.
In the 220th stage, agree to the compressor 50 of machine operating frequency, if do not drive, returned for the 200th stage so in the time period of some cycles, the warm water of output drives the compressor 50 according to operating frequency.If compressor 50 drives the time period that reaches some cycles, in output pulse width coded modulation PWM waveform, reentered for the 200th stage so.
Agree to the compressor 50 of machine operating frequency to drive (the 220th stage) after time period of some cycles, produce pulsewidth coding modulation (PWM) waveform (the 230th stage) at random, wherein operating frequency was determined in the 210th stage at random.Pulsewidth coding modulation (PWM) control signal is by pulsewidth coding modulation (PWM) waveform generator output at random, and 6 power transistors on the driving inverter 40, makes compressor electric motor three phase inversion, and drive compression machine 50.Then, got back to for the 200th stage again, and produce new warm water, and then determine new operating frequency.
As mentioned above, repeat, and disperse the noise band territory of operating frequency with operating frequency at random from the process in 230 stages of the 200th stage to the.(the 240th stage) stops the driving of compressor 50 when reaching the concluding time.
Fig. 6 is the frequency that takes place when driving of transducer air conditioning of the present invention and the graph of a relation of noise.
In Fig. 3, be shown with the frequency noise of the operating frequency that takes place during according to driven compressor.In above-mentioned frequency noise, strong especially high frequency noise band territory takes place in its specific band territory.
In the control method of transducer air conditioning of the present invention, agree to the pulsewidth coding modulation (PWM) control signal output of machine operating frequency after, compressor is driven.Simultaneously as shown in Figure 6, the operating frequency at random that the high frequency noise band territory that takes place in specific band territory is output disperses, and then prevents the generation of high frequency noise.
Aforesaid the present invention, the noise band territory of its operating frequency reaches after the high frequency noise band territory, output operating frequency at random, and then output is according to the pulsewidth coding modulation (PWM) control signal of above-mentioned operating frequency, noise band territory is disperseed, and reduce the noise that causes by CF.
Protection scope of the present invention is not limited to the embodiment of above-mentioned explanation, and is defined by the claim of claims record.In field of the present invention, have and know that usually the knowledgeable can make various distortion and improvement in the claim scope of claims record.
Claims (2)
1. the operating control device of a transducer air conditioning comprises: the supply unit (10) that power supply is provided; Remove the filter (20) of connecting power noise; To become the current transformer (30) of dc source by the power conversion of filter (20); Dc source is transformed into the inverter (40) of AC power; Under the switch control action of inverter (40) and compressor driven (50); It is characterized in that, also be provided with: produce the microcontroller (60) that warm water and each fixed cycle are determined operating frequency when connecting power supply, and microcontroller (60) is by pulsewidth coding modulation waveform generator (90) and coupled warm water generator (80) constitute at random, wherein pulsewidth coding modulation waveform generator (90) links to each other with inverter (40) at random, the modulator control signal of pulsewidth coding at random of output is sent into inverter (40), and the described modulator control signal of pulsewidth coding at random is equivalent to the operating frequency definite by microcontroller.
2. the progress control method of a transducer air conditioning is characterized in that, this control method comprised as the next stage: when connecting power supply, take place the stage of warm water; Each fixed cycle detects the stage of operating frequency at random, and wherein above-mentioned operating frequency at random produces because of the generation of warm water; Output is equivalent to the stage of the modulator control signal of pulsewidth coding at random of above-mentioned operating frequency at random; By the stage of the above-mentioned modulator control signal of pulsewidth coding at random control inverter switch; By the control action of above-mentioned switch, the stage of drive compression machine.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB031298109A CN100343592C (en) | 2003-05-20 | 2003-05-20 | Running controlling apparatus and its method for variable frequency air conditioner |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB031298109A CN100343592C (en) | 2003-05-20 | 2003-05-20 | Running controlling apparatus and its method for variable frequency air conditioner |
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| Publication Number | Publication Date |
|---|---|
| CN1548832A CN1548832A (en) | 2004-11-24 |
| CN100343592C true CN100343592C (en) | 2007-10-17 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNB031298109A Expired - Fee Related CN100343592C (en) | 2003-05-20 | 2003-05-20 | Running controlling apparatus and its method for variable frequency air conditioner |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FI121307B (en) * | 2008-04-07 | 2010-09-30 | Kone Corp | Power supply unit and power supply arrangement |
| CN104132429B (en) * | 2014-08-14 | 2017-06-30 | 珠海格力电器股份有限公司 | The control method of convertible frequency air-conditioner, apparatus and system |
| 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 |
| CN109756172B (en) * | 2018-12-29 | 2021-03-09 | 追创科技(苏州)有限公司 | Method and device for driving brush motor and computer readable storage medium |
| CN112009403B (en) * | 2020-08-31 | 2021-09-28 | 安徽江淮汽车集团股份有限公司 | Compressor driving circuit, control method and vehicle-mounted air conditioning system |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5088297A (en) * | 1989-09-27 | 1992-02-18 | Hitachi, Ltd. | Air conditioning apparatus |
| JPH06169574A (en) * | 1992-11-30 | 1994-06-14 | Matsushita Electric Ind Co Ltd | Pwm inverter device |
| CN2206519Y (en) * | 1994-07-16 | 1995-08-30 | 清华大学 | Frequency conversion speed regulator for compression engine of signal-phase air conditioner |
| JPH08228487A (en) * | 1994-12-07 | 1996-09-03 | Mitsubishi Electric Corp | Inverter of air conditioner |
| CN1320297A (en) * | 1998-08-31 | 2001-10-31 | 株式会社日立制作所 | Controller for PWM/PAM motor and method for controlling air conditioner and motor having controller |
| JP2002125379A (en) * | 2001-08-07 | 2002-04-26 | Hitachi Ltd | Pwm/pam control type motor drive device and air conditioner using the same |
-
2003
- 2003-05-20 CN CNB031298109A patent/CN100343592C/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5088297A (en) * | 1989-09-27 | 1992-02-18 | Hitachi, Ltd. | Air conditioning apparatus |
| JPH06169574A (en) * | 1992-11-30 | 1994-06-14 | Matsushita Electric Ind Co Ltd | Pwm inverter device |
| CN2206519Y (en) * | 1994-07-16 | 1995-08-30 | 清华大学 | Frequency conversion speed regulator for compression engine of signal-phase air conditioner |
| JPH08228487A (en) * | 1994-12-07 | 1996-09-03 | Mitsubishi Electric Corp | Inverter of air conditioner |
| CN1320297A (en) * | 1998-08-31 | 2001-10-31 | 株式会社日立制作所 | Controller for PWM/PAM motor and method for controlling air conditioner and motor having controller |
| JP2002125379A (en) * | 2001-08-07 | 2002-04-26 | Hitachi Ltd | Pwm/pam control type motor drive device and air conditioner using the same |
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| CN1548832A (en) | 2004-11-24 |
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