CN100464484C - Pre-correcting power for power factor - Google Patents
Pre-correcting power for power factor Download PDFInfo
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- CN100464484C CN100464484C CNB2006101511014A CN200610151101A CN100464484C CN 100464484 C CN100464484 C CN 100464484C CN B2006101511014 A CNB2006101511014 A CN B2006101511014A CN 200610151101 A CN200610151101 A CN 200610151101A CN 100464484 C CN100464484 C CN 100464484C
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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
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
- Y02B70/10—Technologies improving the efficiency by using switched-mode power supplies [SMPS], i.e. efficient power electronics conversion e.g. power factor correction or reduction of losses in power supplies or efficient standby modes
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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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P80/00—Climate change mitigation technologies for sector-wide applications
- Y02P80/10—Efficient use of energy, e.g. using compressed air or pressurized fluid as energy carrier
Abstract
This invention relates to a buck-boost type power factor pre-correction supply, in which, the type of its control chip is MC33262 or 34262, a positive output of a bridge rectifying circuit is connected with the drain of a power switch tube, the gate of which is connected with pin 7 of the control chip, the source of the tube is connected with one end of the current sample resistor and pin 4 of the control chip, the other end of the current sample resistor is connected with one end of the inductor and one end of No.3 resistor, the other end of which is connected with one end of No.4 resistor and pin 1 of the control chip, No.4 resistor is connected with the other end of the inductor and the output end of the bridge rectifying circuit by the diode, pin 3 of the chip is connected with the output of a sine voltage reference signal generator and pin 5 of the chip is connected with the output of 555 vibration circuit.
Description
Technical field
The present invention relates to a kind of buck-boost type pre-correcting power for power factor.
Background technology
The MC33262/34262 cake core is a kind of high-performance, critical conduction, the current mode power factor controller that U.S. MOTOROLA company produces.Often be applied in the control of booster type BOOST circuit of power factor correction, be mainly used in the precorrection utmost point and the active preposing conversion device of off-line type of electric ballast.The preposing conversion device makes the electric main electric current be sinusoidal wave, and with the line voltage same-phase, power factor can be near 1.The circuit form of at present the most frequently used preposing conversion device is a BOOST type circuit.The shortcoming of BOOST type circuit is that power factor is lower when the direct voltage of the alternating voltage amplitude of input and output is more or less the same.Such as electric ballast for the 400V inlet wire, in order to obtain the bus direct voltage of 400V, adopt the boost circuit just can not obtain higher power factor, need to select the buck-boost circuit.But the characteristics of buck-boost circuit are: input polarity is opposite with output polarity, and promptly not altogether, this has caused very big difficulty for the realization of its control circuit.
Summary of the invention
The purpose of this invention is to provide a kind of pre-correcting power for power factor, to solve the difficulty that realization was caused that traditional buck-boost circuit input polarity and output polarity are given its control circuit on the contrary.The present invention is by control chip 1, power switch pipe Q, current sampling resistor R1, inductance L, filter capacitor C1, electric capacity of voltage regulation C2, No. three capacitor C 3, No. three resistance R 3, No. four resistance R 4, diode D, power supply VCC, 555 oscillating circuits 2, sinusoidal voltage reference signal generator 3 and bridge rectifier 4 are formed, the model of control chip 1 is MC33262 or 34262, the cathode output end of bridge rectifier 4 connects the drain electrode of power switch pipe Q, the control utmost point of power switch pipe Q connects the pin 7 of control chip 1, the source electrode of power switch pipe Q connects the end of current sampling resistor R1 and the pin 4 of control chip 1, the other end of current sampling resistor R1 connects an end of inductance L, the end of filter capacitor C1, one end of No. three resistance R 3 and an end and the ground connection of electric capacity of voltage regulation C2, the other end of No. three resistance R 3 connects an end of No. four resistance R 4 and the pin 1 of control chip 1, the other end of filter capacitor C1, the other end of No. four resistance R 4 is connected the negative electrode of diode D with the other end of electric capacity of voltage regulation C2, the anode of diode D connects the other end of inductance L, the cathode output end of bridge rectifier 4, the pin 2 of control chip 1 is by the pin 6 of No. three capacitor C 3 connection control chips 1, pin 6 ground connection of control chip 1, the pin 3 of control chip 1 connects the output of sinusoidal voltage reference signal generator 3, the pin 5 of control chip 1 connects the output of 555 oscillating circuits 2, and the pin 8 of control chip 1 connects the output of power supply VCC.
As shown in Figure 1, the pulse signal that is sent by 555 oscillating circuits 2 is given the zero current cross detection signal input pin 5 of control chip 1, as the zero current reference signal of power switch pipe Q conducting.555 oscillating circuits 2 send the square-wave signal of deciding frequency, the trailing edge of pulse, make the pin 7 of control chip 1 send high level, power switch pipe Q conducting, current path is: the cathode output end of the cathode output end of bridge rectifier 4-power switch pipe Q-inductance L-bridge rectifier 4.Current sampling resistor R1 is connected on the source electrode of power switch pipe Q, is used to detect out the electric current of power switch pipe Q, at t
1Constantly, rise to the inductive current peak that R1 limits: I when electric current
LPK=1.5V/R, the error amplifier output counter-rotating of control chip 1 internal current ring, the drive signal that multiplier and the sequential logical circuit of control chip 1 by inside sends its pin 7 becomes low level, and power switch pipe Q turn-offs, thereby realizes the closed-loop control to input current.As shown in Figure 1, give the input pin of the error amplifier of control chip 1 inside, constitute closed-loop control output voltage by the output voltage of R3, R4 sampling.The present invention utilizes the MC33262/34262 chip to solve the voltage close loop control problem of buck-boost circuit cleverly, make direct voltage that the present invention exports highly stable when 340V～450V input voltage and very wide loading range (200W-700W), output busbar voltage ripple is less than 10V.The present invention utilizes structure and the operation principle of MC33262/34262, be applied in the circuit of power factor correction of buck-boost type after being transformed, the inlet wire alternating voltage is 400V, dc bus is output as 400V, maximum power is 700W, the power factor that obtains is applied to the preceding utmost point power factor correction of electric ballast greater than 0.96, has obtained good effect.
Description of drawings
Fig. 1 is a structural representation of the present invention, Fig. 2 to Fig. 4 is the operation principle schematic diagram of buck-boost circuit, Fig. 5 is the electric current on the power switch S of flowing through in the buck-boost circuit, the timing diagram of waveform between the electric current on power switch S both end voltage and the inductance L, Fig. 6 is the timing diagram of waveform between the electric current of the voltage exported of pulse signal and the control chip of 555 oscillating circuits output and inductance L, Fig. 7 is a variation relation schematic diagram between experiment power factor of the present invention of gained and the input power, and Fig. 8 is a variation relation schematic diagram between the power factor of the present invention of experiment gained and the input voltage.
Embodiment
Embodiment one: specify present embodiment below in conjunction with Fig. 1.Present embodiment is by control chip 1, power switch pipe Q, current sampling resistor R1, inductance L, filter capacitor C1, electric capacity of voltage regulation C2, No. three capacitor C 3, No. three resistance R 3, No. four resistance R 4, diode D, power supply VCC, 555 oscillating circuits 2, sinusoidal voltage reference signal generator 3 and bridge rectifier 4 are formed, the model of control chip 1 is MC33262 or 34262, the cathode output end of bridge rectifier 4 connects the drain electrode of power switch pipe Q, the control utmost point of power switch pipe Q connects the pin 7 of control chip 1, the source electrode of power switch pipe Q connects the end of current sampling resistor R1 and the pin 4 of control chip 1, the other end of current sampling resistor R1 connects an end of inductance L, the end of filter capacitor C1, one end of No. three resistance R 3 and an end and the ground connection of electric capacity of voltage regulation C2, the other end of No. three resistance R 3 connects an end of No. four resistance R 4 and the pin 1 of control chip 1, the other end of filter capacitor C1, the other end of No. four resistance R 4 is connected the negative electrode of diode D with the other end of electric capacity of voltage regulation C2, the anode of diode D connects the other end of inductance L, the cathode output end of bridge rectifier 4, the pin 2 of control chip 1 is by the pin 6 of No. three capacitor C 3 connection control chips 1, pin 6 ground connection of control chip 1, the pin 3 of control chip 1 connects the output of sinusoidal voltage reference signal generator 3, the pin 5 of control chip 1 connects the output of 555 oscillating circuits 2, and the pin 8 of control chip 1 connects the output of power supply VCC.Consider that the reverse voltage that pipe bears has 1100V, power switch pipe selects IGBT:20N120CND, and operating frequency is 25KHz.
Specify the buck-boost circuit below in conjunction with Fig. 2 to Fig. 5, in the drawings, S represents power switch pipe, U
1The voltage of representative after bridge rectifier 4 rectifications.The characteristics of buck-boost circuit: input polarity and output polarity (being the output voltage at R two ends) are opposite, and promptly not altogether, this has caused great difficulty for the realization of its control circuit.This patent utilizes the MC33262/34262 chip to solve the voltage close loop control problem of buck-boost circuit cleverly.As shown in Figure 1, by divider resistance R3, the output voltage of R4 sampling is given the pin 1 of control chip, constitutes the closed-loop control to output voltage, its effect from Fig. 7 and Fig. 8 as seen, power factor reaches very high numerical value.
Embodiment two: specify present embodiment below in conjunction with Fig. 1.The difference of present embodiment and execution mode one is: sinusoidal voltage reference signal generator 3 is by transformer B, a rectifier bridge 7, No. four capacitor C 4, No. five capacitor C 5, No. five resistance R 5 and No. six resistance R 6 are formed, the two ends of the transformer B first secondary coil S2 are connected on two inputs of a rectifier bridge 7, the cathode output end of a rectifier bridge 7 connects an end of No. four capacitor C 4 and an end of No. five resistance R 5, the other end of No. five resistance R 5 connects the pin 3 of control chip 1, one end of No. five capacitor C 5 and an end of No. six resistance R 6, the cathode output end of a rectifier bridge 7 connects the other end of No. four capacitor C 4, the other end of the other end of No. five capacitor C 5 and No. six resistance R 6 and ground connection.The signal that present embodiment is input to control chip 1 is a dc pulse signal.The two ends of present embodiment transformer primary coil S1 are connected on two outputs of AC power AC, adopt isolating transformer B will import isolated from power and obtain the sinusoidal voltage reference signal.Like this ground of control chip 1 can with the output of buck-boost circuit ground with ground, isolate with the ground of input power supply.Other composition is identical with execution mode one with connected mode.
Embodiment three: specify present embodiment below in conjunction with Fig. 1.The difference of present embodiment and execution mode two is: described power supply VCC is made up of the transformer B second secondary coil S3 and No. two rectifier bridges 9, the two ends of the transformer B second secondary coil S3 are connected on two inputs of No. two rectifier bridges 9, the cathode output end of No. two rectifier bridges 9 connects the cathode output end ground connection of 8, No. two rectifier bridges 9 of pin of control chip 1.So be provided with, finished the power supply of control chip 1 and the isolation of input voltage by transformer B.Other composition is identical with execution mode two with connected mode.
Claims (3)
1. pre-correcting power for power factor, it is characterized in that it is by control chip (1), power switch pipe (Q), current sampling resistor (R1), inductance (L), filter capacitor (C1), electric capacity of voltage regulation (C2), No. three electric capacity (C3), No. three resistance (R3), No. four resistance (R4), diode (D), power supply (VCC), 555 oscillating circuits (2), sinusoidal voltage reference signal generator (3) and bridge rectifier (4) are formed, the model of control chip (1) is MC33262 or 34262, the cathode output end of bridge rectifier (4) connects the drain electrode of power switch pipe (Q), the control utmost point of power switch pipe (Q) connects the pin 7 of control chip (1), the source electrode of power switch pipe (Q) connects an end of current sampling resistor (R1) and the pin 4 of control chip (1), the other end of current sampling resistor (R1) connects an end of inductance (L), one end of filter capacitor (C1), one end and the ground connection of one end of No. three resistance (R3) and electric capacity of voltage regulation (C2), the other end of No. three resistance (R3) connects an end of No. four resistance (R4) and the pin 1 of control chip (1), the other end of filter capacitor (C1), the other end of No. four resistance (R4) is connected the negative electrode of diode (D) with the other end of electric capacity of voltage regulation (C2), the anode of diode (D) connects the other end of inductance (L), the cathode output end of bridge rectifier (4), the pin 2 of control chip (1) connects the pin 6 of control chip (1) by No. three electric capacity (C3), pin 6 ground connection of control chip (1), the pin 3 of control chip (1) connects the output of sinusoidal voltage reference signal generator (3), the pin 5 of control chip (1) connects the output of 555 oscillating circuits (2), and the pin 8 of control chip (1) connects the output of power supply (VCC).
2. a kind of pre-correcting power for power factor according to claim 1, it is characterized in that sinusoidal voltage reference signal generator (3) is by transformer (B), a rectifier bridge (7), No. four electric capacity (C4), No. five electric capacity (C5), No. five resistance (R5) and No. six resistance (R6) are formed, the two ends of transformer (B) first secondary coil (S2) are connected on two inputs of a rectifier bridge (7), the cathode output end of a rectifier bridge (7) connects an end of No. four electric capacity (C4) and an end of No. five resistance (R5), the other end of No. five resistance (R5) connects the pin 3 of control chip (1), one end of one end of No. five electric capacity (C5) and No. six resistance (R6), the cathode output end of a rectifier bridge (7) connects the other end of No. four electric capacity (C4), the other end and the ground connection of the other end of No. five electric capacity (C5) and No. six resistance (R6).
3. a kind of pre-correcting power for power factor according to claim 2, it is characterized in that described power supply (VCC) is made up of transformer (B) second secondary coil (S3) and No. two rectifier bridges (9), the two ends of transformer (B) second secondary coil (S3) are connected on two inputs of No. two rectifier bridges (9), the cathode output end of No. two rectifier bridges (9) connects the cathode output end ground connection of 8, No. two rectifier bridges of pin (9) of control chip (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006101511014A CN100464484C (en) | 2006-12-06 | 2006-12-06 | Pre-correcting power for power factor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006101511014A CN100464484C (en) | 2006-12-06 | 2006-12-06 | Pre-correcting power for power factor |
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| Publication Number | Publication Date |
|---|---|
| CN1988340A CN1988340A (en) | 2007-06-27 |
| CN100464484C true CN100464484C (en) | 2009-02-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2006101511014A Expired - Fee Related CN100464484C (en) | 2006-12-06 | 2006-12-06 | Pre-correcting power for power factor |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101631415B (en) * | 2009-08-14 | 2013-02-20 | 上海美丽灯饰有限公司 | Electronic rectifier of fluorescent lamp |
| CN107994764A (en) * | 2016-10-26 | 2018-05-04 | 上海儒竞自动控制系统有限公司 | Single phase power factor correcting circuit |
| CN109044573B (en) * | 2018-08-31 | 2020-11-06 | 东北电力大学 | Wearable bone stress real-time monitoring system |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2333138Y (en) * | 1998-05-12 | 1999-08-11 | 北京国际技术合作中心 | High strength gas discharge lamp electronic ballast |
| CN1805645A (en) * | 2005-11-29 | 2006-07-19 | 哈尔滨工业大学 | Electronic ballast applicable to 400V/600W high voltage sodium lamps for agricultural use |
-
2006
- 2006-12-06 CN CNB2006101511014A patent/CN100464484C/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2333138Y (en) * | 1998-05-12 | 1999-08-11 | 北京国际技术合作中心 | High strength gas discharge lamp electronic ballast |
| CN1805645A (en) * | 2005-11-29 | 2006-07-19 | 哈尔滨工业大学 | Electronic ballast applicable to 400V/600W high voltage sodium lamps for agricultural use |
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| Publication number | Publication date |
|---|---|
| CN1988340A (en) | 2007-06-27 |
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Granted publication date: 20090225 Termination date: 20211206 |