CN2930084Y - Active power factor corrector - Google Patents
Active power factor corrector Download PDFInfo
- Publication number
- CN2930084Y CN2930084Y CNU2006200870458U CN200620087045U CN2930084Y CN 2930084 Y CN2930084 Y CN 2930084Y CN U2006200870458 U CNU2006200870458 U CN U2006200870458U CN 200620087045 U CN200620087045 U CN 200620087045U CN 2930084 Y CN2930084 Y CN 2930084Y
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- CN
- China
- Prior art keywords
- power factor
- dsp chip
- output
- active power
- analog
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E40/00—Technologies for an efficient electrical power generation, transmission or distribution
- Y02E40/30—Reactive power compensation
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- Dc-Dc Converters (AREA)
Abstract
The utility model discloses an active power factor rectifier which comprises a bridge type current rectifying circuit which transforms the alternating current power supply to the direct current and connects the positive pole output end with a half wave rectifying diode through a wave filtering sensor on one hand and with the ground through switch MOS transistor on the other hand. The controller adopting the DSP chip as the active power factor rectifying circuit realizes the power supply power factor rectification by collecting and analogue/digital conversing the output voltage of the bridge type rectifying circuit in the air conditioner power supply circuit, the input current of the wave filtering sensor and the output direct current voltage of the half wave current rectifying diode and through the PWM signal with a certain dutycycle output by an inner and an outer closed loop adjusters to make the power factor reach 0.99, reduce the public electricity network pollution and effectively reduce the overall cost of the air conditioner.
Description
Technical field
The utility model relates to a kind of power factor corrector, specifically, relates to a kind of being applied in the air conditioner circuit, adopts the APFC of DSP control.
Background technology
Power factor corrector PFC divides two kinds of active control mode and Passive Shape Control modes, the Passive Shape Control mode is separated components and parts by inductance with electric capacity etc. and is formed, circuit structure is simple and easy to realize, but, be difficult to realize higher power factor, only can be corrected to 0.7, utility network has been caused pollution to a certain degree.Adopt active control mode then to be easy to realize higher power factor, the method that extensively adopts is the PFC scheme of Hitachi, Ltd at present, though its power factor recoverable to 0.99, but, its cost is higher, and job insecurity, is unsuitable for promoting the use of in the air-conditioning product.
Summary of the invention
The utility model is in order to solve existing Active Power Factor Correction control circuit cost height, the problem of job insecurity, the APFC that provides a kind of novel employing DSP to control, controller adopts the dsp chip of TI company, can realize higher power factor, and effectively reduce the complete machine cost of air conditioner.
For solving the problems of the technologies described above, the utility model is achieved by the following technical solutions:
A kind of active power factor corrector comprises bridge rectifier, and described bridge rectifier is rectified into direct current with AC power, connects the halfwave rectifier diode by its cathode output end on the one hand through filter inductance, on the other hand through switch MOS pipe ground connection; Wherein, be input to the analog-to-digital conversion input port of a dsp chip by the rectifier output voltage of described bridge rectifier cathode output end output; The input current that flows through filter inductance is input to another analog-to-digital conversion input port of described dsp chip after sampling; The 3rd the analog-to-digital conversion input port that connects dsp chip through the direct voltage of described halfwave rectifier diode output; The pwm signal output of described dsp chip connects the grid of described switch MOS pipe.
As the further qualification to technique scheme, the cathode output end of described bridge rectifier is through current sampling resistor ground connection, and the voltage difference that described sampling resistor two ends form is input to the analog-to-digital conversion input port of described dsp chip.The direct voltage of described rectifier output voltage and halfwave rectifier diode output is connected the analog-to-digital conversion input port of described dsp chip respectively by a resistance pressure-dividing network.
As the further qualification again to technique scheme, described dsp chip is exported the pwm signal with certain duty ratio according to the voltage signal that receives, and connects the grid of described switch MOS pipe through gate drive circuit.
Compared with prior art, advantage of the present utility model and good effect are: the utility model adopts the controller of dsp chip as APFC, by gathering the output voltage of bridge rectifier in the air conditioner power circuit, the direct voltage of filter inductance input current and the output of halfwave rectifier diode, and after it is carried out analog-to-digital conversion, by interior, the pwm signal that outer two closed-loop adjustment output has certain duty ratio, the make-and-break time of switch MOS pipe in the control air conditioner power circuit, and then realization is to the correction of electrical source power factor, make power factor reach 0.99, reduce pollution utility network.APFC of the present utility model has been owing to broken away from dependence to the PFC of Hitachi, Ltd scheme, thereby effectively reduces the complete machine cost of air conditioner, improved the stability of its work.
Description of drawings
Fig. 1 is an APFC schematic diagram of the present utility model.
Embodiment
Below in conjunction with the drawings and specific embodiments the utility model is described in further detail.
APFC of the present utility model adopts the dsp chip of TI company as controller, and its physical circuit schematic diagram is referring to shown in Figure 1.AC power V
ACThe input that connects bridge rectifier through electromagnetic interface filter, described bridge rectifier is formed by connecting by four diode D1～D4, its cathode output end output rectifier output voltage Vin is connected halfwave rectifier diode D5 with electric current I on the one hand through filter inductance L, on the other hand through drain electrode and the source ground of switch MOS pipe Q.In order to realize adjusting to electrical source power factor, dsp chip need be gathered 3 signals, be respectively: the direct voltage Vo of rectifier output voltage Vin, the input current Iin that flows through filter inductance L and halfwave rectifier diode D5 output, and do inside and outside pair of closed-loop control according to the sampled value of input.Wherein, rectifier output voltage Vin outputs to the analog-to-digital conversion input port ADCINO of dsp chip after divider resistance R1, R2 dividing potential drop, analog signal conversion is become the intermediate parameters A of digital signal as the dsp chip internal processing program; Under the dividing potential drop effect of direct voltage Vo at divider resistance R3, R4 of halfwave rectifier diode D5 output, output to the analog-to-digital conversion input port ADCIN1 of dsp chip, analog signal conversion is become the input value of digital signal as outer shroud control in the dsp chip internal processing program; The input current Iin that flows through filter inductance L is equal to the electric current of bridge rectifier cathode output end, through sampling resistor Rs ground connection, the sampled voltage of its formation outputs to the analog-to-digital conversion input port ADCIN2 of dsp chip through signal conditioner, and analog signal conversion is become the input value of digital signal as ring control in the dsp chip internal processing program.
In described dsp chip, direct voltage Vo and reference voltage V
RefCompare, its difference signal is input among the Voltage loop controller Gvea, then output signal B; After multiplying each other respectively, B and signal C and signal A draw the reference current I of internal current ring
RefC is by formula C=1/V
Dc* V
DcDraw, wherein, V
DcArithmetic mean for Vin.I
RefBe input among the current controller Gca with the difference of Iin, the pwm signal that output has certain duty ratio connects the grid of described switch MOS pipe by gate driver, controls the time of its conducting and shutoff, thereby regulate input current Iin, it is approached with reference to sinusoidal current curve I
Ref, and then realization is to the correction of electrical source power factor.
The utility model has been realized the correction of active power factor by adopting above-mentioned simple circuit configuration, not only makes the power factor after the correction reach 0.99, and has effectively lowered circuit cost, has improved the stability of air conditioner operation.Certainly; above-mentioned explanation is not to be to restriction of the present utility model; the utility model also is not limited in above-mentioned giving an example, and variation, remodeling, interpolation or replacement that those skilled in the art are made in essential scope of the present utility model also should belong to protection range of the present utility model.
Claims (5)
1. active power factor corrector, comprise bridge rectifier, described bridge rectifier is rectified into direct current with AC power, connects halfwave rectifier diode (D5) by its cathode output end on the one hand through filter inductance (L), on the other hand through switch MOS pipe (Q) ground connection; It is characterized in that: the analog-to-digital conversion input port (ADCIN0) that is input to a dsp chip by the rectifier output voltage (Vin) of described bridge rectifier cathode output end output; The input current (Iin) that flows through filter inductance (L) is input to another analog-to-digital conversion input port (ADCIN2) of described dsp chip after sampling; The 3rd the analog-to-digital conversion input port (ADCIN1) that connects dsp chip through the direct voltage (Vo) of described halfwave rectifier diode (D5) output; The pwm signal output of described dsp chip connects the grid of described switch MOS pipe (Q).
2. active power factor corrector according to claim 1, it is characterized in that: the cathode output end of described bridge rectifier is through current sampling resistor (Rs) ground connection, and the voltage difference that sampling resistor (Rs) two ends form is input to the analog-to-digital conversion input port (ADCIN2) of described dsp chip.
3. active power factor corrector according to claim 2 is characterized in that: the pwm signal output of described dsp chip connects the grid of described switch MOS pipe (Q) through gate drive circuit.
4. active power factor corrector according to claim 3 is characterized in that: described rectifier output voltage (Vin) connects the analog-to-digital conversion input port (ADCIN0) of described dsp chip through a resistance pressure-dividing network (R1, R2).
5. active power factor corrector according to claim 4 is characterized in that: the direct voltage (Vo) of described halfwave rectifier diode (D5) output connects the analog-to-digital conversion input port (ADCIN1) of described dsp chip through another resistance pressure-dividing network (R3, R4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2006200870458U CN2930084Y (en) | 2006-07-17 | 2006-07-17 | Active power factor corrector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2006200870458U CN2930084Y (en) | 2006-07-17 | 2006-07-17 | Active power factor corrector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2930084Y true CN2930084Y (en) | 2007-08-01 |
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ID=38308454
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2006200870458U Expired - Fee Related CN2930084Y (en) | 2006-07-17 | 2006-07-17 | Active power factor corrector |
Country Status (1)
| Country | Link |
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| CN (1) | CN2930084Y (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101599660B (en) * | 2008-06-06 | 2011-05-18 | 海洋王照明科技股份有限公司 | Method and system for randomly switching alternating current |
| CN101382815B (en) * | 2008-10-23 | 2012-02-01 | 上海儒竞电子科技有限公司 | Controller for correcting hysteresis current by single-phase power factor |
| CN103378600A (en) * | 2012-04-24 | 2013-10-30 | 张佩佩 | Three-phase power factor correcting circuit and power factor improving method thereof |
| CN102187560B (en) * | 2008-11-25 | 2013-12-11 | 株式会社村田制作所 | PFC converter |
| CN104578731A (en) * | 2015-01-26 | 2015-04-29 | 湖南城市学院 | Harmonic suppression double closed loop control circuit and harmonic suppression device |
-
2006
- 2006-07-17 CN CNU2006200870458U patent/CN2930084Y/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101599660B (en) * | 2008-06-06 | 2011-05-18 | 海洋王照明科技股份有限公司 | Method and system for randomly switching alternating current |
| CN101382815B (en) * | 2008-10-23 | 2012-02-01 | 上海儒竞电子科技有限公司 | Controller for correcting hysteresis current by single-phase power factor |
| CN102187560B (en) * | 2008-11-25 | 2013-12-11 | 株式会社村田制作所 | PFC converter |
| CN103378600A (en) * | 2012-04-24 | 2013-10-30 | 张佩佩 | Three-phase power factor correcting circuit and power factor improving method thereof |
| CN104578731A (en) * | 2015-01-26 | 2015-04-29 | 湖南城市学院 | Harmonic suppression double closed loop control circuit and harmonic suppression device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: QINGDAO HISENSE AIR CONDITIONING CO. Free format text: FORMER OWNER: HAIXIN GROUP CO., LTD.; PATENTEE Effective date: 20071012 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20071012 Address after: 266071 Shandong city of Qingdao province Jiangxi City Road No. 11 Patentee after: Haisense Air Conditioner Co., Ltd., Qingdao Address before: 266071 Shandong city of Qingdao province Jiangxi City Road No. 11 Co-patentee before: Haisense Air Conditioner Co., Ltd., Qingdao Patentee before: Hisense Group Co., Ltd. |
|
| ASS | Succession or assignment of patent right |
Owner name: HISENSE( SHANDONG ) AIR CONDITIONING CO., LTD. Free format text: FORMER OWNER: QINGDAO HISENSE AIR CONDITIONING CO. Effective date: 20080425 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20080425 Address after: Shandong City, Qingdao province Jiangxi City Road 11, zip code: 266071 Patentee after: Hisense (Shandong) Air-Conditioning Co., Ltd. Address before: Shandong City, Qingdao province Jiangxi City Road 11, zip code: 266071 Patentee before: Haisense Air Conditioner Co., Ltd., Qingdao |
|
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20070801 Termination date: 20130717 |