CN2595064Y - Separateds single-stage power factor correcting converter - Google Patents
Separateds single-stage power factor correcting converter Download PDFInfo
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- CN2595064Y CN2595064Y CN 02293135 CN02293135U CN2595064Y CN 2595064 Y CN2595064 Y CN 2595064Y CN 02293135 CN02293135 CN 02293135 CN 02293135 U CN02293135 U CN 02293135U CN 2595064 Y CN2595064 Y CN 2595064Y
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- diode
- series circuit
- capacitor
- switch transformer
- negative pole
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Abstract
The utility model discloses a separated single-stage power factor correcting converter. A mains supply bridge type rectification circuit is connected with the front end of an inductor; the back end of the inductor, the upper end of a switch tube V#-[1], a positive pole of a capacitor C#-[2], and the upper end of an upper series circuit are connected; the lower end of the upper series circuit, a negative pole of a diode D#-[6], and a positive pole of a capacitor C#-[1]are connected; a negative pole of the capacitor C#-[1] earths; a negative pole of the capacitor c#-[2], a positive pole of the diode D#-[6], and the upper end of a lower series circuit are connected; the lower end of the lower series circuit earths; a primary winding N#-[p2] of a switch transformer is connected in series in the upper series circuit; a primary winding N#-[p1] is connected in series in the lower series circuit; a secondary winding is connected with a rectification filter output circuit. The utility model uses a single-stage circuit to achieve power factor correction and power conversion; the withstand voltage bore by the switch pipe is the peak value of the mains supply voltage; the utility model can cut the passing allowed zero voltage of the switch tube, can achieve medium and high power output, and can be used in the products of a power supply of a household appliance, a power supply of office automation equipment, etc.
Description
Technical field
The utility model relates to a kind of single-stage isolated form power factor correcting converter.
Background technology
Known single-stage isolated form power factor correcting converter (seeing " single-level power factor correction (PFC) converter " literary composition of " middle external power " magazine in August, 2002 publication).Advantage is when having realized that High Power Factor makes input and output voltage isolated, has solved the problem of step-down output.Its shortcoming is the twice that switch tube voltage stress will be higher than the civil power crest voltage, and the switching tube power consumption is big, and the cost height only can be accomplished small-power output.This does not satisfy the needs that some occasion reduces cost and raises the efficiency, as in products such as household electrical appliances power supply, business automation equipment power supply, electric ballast, communication power supply, inverter type welder.
Summary of the invention
The purpose of this utility model is that a kind of single-stage isolated form power factor correcting converter will be provided, and this device can make the switch tube voltage stress decrease to the line voltage peak value, the efficient height, and cost is low, and can realize high-power output.
The purpose of this utility model is achieved in that this device comprises city's bridge rectifier circuit and rectifying and wave-filtering output circuit, city's bridge rectifier circuit minus earth, the anodal inductance L that connects of city's bridge rectifier circuit
1Front end, inductance L
1Rear end, switching tube V
1Upper end, capacitor C
2Anodal reaching gone up series circuit upper end tandem, last series circuit lower end, diode D
6Negative pole and capacitor C
1Anodal tandem, capacitor C
1Minus earth, capacitor C
2Negative pole, diode D
6Anodal series circuit upper end tandem down, following series circuit lower end ground connection, the elementary winding N of switch transformer of reaching
P2Be connected in the series circuit the elementary winding N of switch transformer
P1Be connected on down in the series circuit, the secondary winding of switch transformer is connected to the rectifying and wave-filtering output circuit.
Described upward series circuit is the elementary winding N of the upper end of last series circuit by switch transformer
P2The upper end form, the mid point of last series circuit is by the elementary winding N of switch transformer
P2The lower end connect diode D
5Negative pole form, the lower end of last series circuit is by diode D
5Positive pole form.
The described series circuit of going up also can be the upper end of series circuit by diode D
5Negative pole form, the mid point of last series circuit is by diode D
5Positive pole and the elementary winding N of switch transformer
P2The upper end be connected to form, the lower end of last series circuit is by the elementary winding N of switch transformer
P2The lower end form.
The upper end that described series circuit down is a series circuit down is by diode D
7Negative pole form, the mid point of following series circuit is by diode D
7Positive pole and the elementary winding N of switch transformer
P1The upper end be connected to form, the lower end of following series circuit is by the elementary winding N of switch transformer
P1The lower end form.
Described series circuit down also can be down the elementary winding N of the upper end of series circuit by switch transformer
P1The upper end form, the mid point of following series circuit is by the elementary winding N of switch transformer
P1The lower end connect diode D
7Negative pole form, the lower end of following series circuit is by diode D
7Positive pole form.
The described diode D that goes up in the series circuit
5Be parallel with a switching tube V
2, switching tube V
2Upper end and diode D
5The negative pole tandem, switching tube V
2Lower end and diode D
5Anodal tandem; Diode D in the following series circuit
7Be parallel with a switching tube V
3, switching tube V
3Upper end and diode D
7The negative pole tandem, switching tube V
3Lower end and diode D
7Anodal tandem.
The utility model has the advantages that and use single-level circuit to realize power factor correction and Power Conversion, make the input and output voltage isolation and can realize buck or boost output.And switching tube bears the withstand voltage peak value of line voltage that is, and can realize the accurate zero passage voltage shutoff of switching tube, and high-power output in accomplishing, cost is low, power consumption is little, can be widely used in the products such as household electrical appliances power supply, business automation equipment power supply, electric ballast, communication power supply, inverter type welder.
Below in conjunction with drawings and Examples the utility model is elaborated.
Description of drawings
Fig. 1 is the circuit diagram of first embodiment of the present utility model.
Fig. 2 is the circuit diagram of second embodiment of the present utility model.
Fig. 3 is the circuit diagram of the 3rd embodiment of the present utility model.
Fig. 4 is the circuit diagram of the 4th embodiment of the present utility model.
Switching tube V among the figure
1, V
2, V
3Be IRF840, inductance L
1Be 1mH; Capacitor C
1=capacitor C
2Be 470 μ F/250V electrolytic capacitors; Switch becomes device T EC42 magnetic core, and it has two elementary winding N
P1, N
P2, a secondary winding N
s, two elementary winding N
P1, N
P2The number of turn is identical; Secondary winding N among Fig. 3 and Fig. 4
sHas mid point.
Embodiment
In Fig. 1, diode D
1Plus earth, mains supply V
iAn end, diode D
1Negative pole and diode D
3Anodal tandem; Diode D
2Plus earth, mains supply V
iThe other end, diode D
2Negative pole and diode D
4Anodal tandem; Diode D
3Negative pole, diode D
4Negative pole and inductance L
1The front end tandem constitute city's bridge rectifier circuit.
Inductance L
1Rear end, switching tube V
1Upper end, capacitor C
2Positive pole and the elementary winding N of switch transformer T
P2The upper end tandem.The elementary winding N of switch transformer T
P2Lower end and diode D
5The negative pole tandem constitute to go up series circuit.Diode D
5Positive pole, diode D
6Negative pole and capacitor C
1Anodal tandem, capacitor C
1Minus earth.Capacitor C
2Negative pole, diode D
6Positive pole and diode D
7The negative pole tandem, diode D
7Positive pole and the elementary winding N of switch transformer T
P1The upper end tandem constitute series circuit down, the elementary winding N of switch transformer T
P1Lower end ground connection.The secondary winding N of switch transformer T
sBe connected to the rectifying and wave-filtering output circuit.
The rectifying and wave-filtering output circuit is the secondary winding N of switch transformer T
sUpper end and diode D
8Anodal tandem, diode D
8Negative pole, diode D
9Negative pole and inductance L
2The front end tandem, inductance L
2Rear end, capacitor C
0Positive pole and output V
0The upper end tandem, the secondary winding N of switch transformer T
sLower end, diode D
9Positive pole, capacitor C
0Negative pole and output V
0The lower end tandem.
As at diode D
6The buffer network that the two ends parallel connection is made up of capacitor C, diode D, inductance L can make switching tube V
1Realize accurate no-voltage shutoff, then the efficient of circuit can be higher.
Switch transformer T among this embodiment is operated in normal shock (or anti-sharp) state, and circuit is simple.
In Fig. 2, this embodiment is that its difference has two: one is the elementary winding N of the switch transformer T in the last series circuit by embodiment variation shown in Figure 1 and next
P2With diode D
5Exchanged the position, i.e. inductance L
1Rear end, switching tube V
1Upper end, capacitor C
2Positive pole and diode D
5The negative pole tandem, diode D
5Positive pole and the elementary winding N of switch transformer T
P2The upper end tandem constitute and go up series circuit, the elementary winding N of switch transformer T
P2Lower end, diode D
6Negative pole and capacitor C
1Anodal tandem; Its two elementary winding N for the switch transformer T in the following series circuit
P1With diode D
7Exchanged the position, i.e. capacitor C
2Negative pole, diode D
6Positive pole and the elementary winding N of switch transformer T
P1The upper end tandem, the elementary winding Np of switch transformer T
1Lower end and diode D
7The negative pole tandem constitute series circuit down, diode D
7Plus earth.Remainder is with embodiment shown in Figure 1.
In embodiment illustrated in figures 1 and 2, by switching tube V
1, inductance L
1, diode D
1～D
4, diode D
6, capacitor C
1, capacitor C
2Form boost power factor correction circuit.By switching tube V
1, diode D
5, diode D
7, capacitor C
1, capacitor C
2, switch transformer T, diode D
8, diode D
9, inductance L
2And capacitor C
0Form normal shock (or anti-sharp) type power conversion circuit.Circuit is simple, and the course of work is identical.
In Fig. 3, this embodiment is changed by embodiment shown in Figure 1, and its difference has three: one is the diode D in the last series circuit
5On be parallel with switching tube V
2, switching tube V
2Upper end and diode D
5The negative pole tandem, switching tube V
2Lower end and diode D
5Anodal tandem; It two is the diode D in the following series circuit
7On be parallel with switching tube V
3, switching tube V
3Upper end and diode D
7The negative pole tandem, switching tube V
3Lower end and diode D
7Anodal tandem; It three is the secondary winding N of switch transformer T
sThe rectifying and wave-filtering output circuit that connects is the secondary winding N of switch transformer T
sUpper end and diode D
8Anodal tandem, the secondary winding N of switch transformer T
sLower end and diode D
9Anodal tandem, diode D
8Negative pole, diode D
9Negative pole and inductance L
2The front end tandem, inductance L
2Rear end, capacitor C
0Positive pole and output V
0The upper end tandem, the elementary winding N of switch transformer T
sMid point, capacitor C
0Negative pole and output V
0The lower end tandem.
As elementary winding NP at switch transformer T
2The lower end and the elementary winding NP of switch transformer T
1The upper end between insert the buffer network form by capacitor C, diode D, inductance L and can make switching tube V
2, switching tube V
3Realize accurate no-voltage shutoff, then the efficient of circuit can be higher.
Remainder is with embodiment shown in Figure 1.
In Fig. 4, this embodiment is changed by embodiment shown in Figure 3, and its difference has three: one is the elementary winding N of the switch transformer T in the last series circuit
P2Be parallel with switching tube V
2Diode D
5Exchanged the position, promptly by inductance L
1, switching tube V
1The upper end, be parallel with switching tube V
2Diode D
5Negative pole and capacitor C
2Anodal tandem, be parallel with switching tube V
2Two utmost point D
5Positive pole and the elementary winding N of switch transformer T
P2The upper end tandem constitute and go up series circuit, switching tube V
2Upper end and diode D
5The negative pole tandem, switching tube V
2Lower end and diode D
5Anodal tandem, the elementary winding N of switch transformer T
P2Lower end, capacitor C
1Positive pole and diode D
6The negative pole tandem; Its two elementary winding N for the switch transformer T in the following series circuit
P1Be parallel with switching tube V
3Diode D
7Exchanged the position, i.e. capacitor C
2Negative pole, diode D
6Positive pole and the elementary winding N of switch transformer T
P1The upper end tandem, the elementary winding N of switch transformer T
P1The lower end be parallel with switching tube V
3Diode D
7The negative pole tandem constitute series circuit down, switching tube V
3Upper end and diode D
7The negative pole tandem, switching tube V
3Lower end and diode D
7Anodal tandem, diode D
7Plus earth; It three is can be at the elementary winding NP of switch transformer T
2The upper end and the elementary winding NP of switch transformer T
1The lower end between insert the buffer network of forming by capacitor C, diode D, inductance L so that the efficient of circuit is higher.
Remainder is with embodiment shown in Figure 3.
In Fig. 3 and embodiment shown in Figure 4, by switching tube V
1, inductance L
1, diode D
1～D
4, diode D
6, capacitor C
1, capacitor C
2Form boost power factor correction circuit, by switching tube V
1, switching tube V
2And switching tube V
3, diode D
5, diode D
7, capacitor C
1, capacitor C
2, switch transformer T, diode D
8, diode D
9, inductance L
2And capacitor C
0Form power conversion circuit.
The concrete course of work describes with Fig. 3 and embodiment shown in Figure 4.
If output voltage V
0=110 volts, capacitor C
1, capacitor C
2On voltage be V
C1=V
C2=200 volts, switching tube V
1, switching tube V
2(switching tube V
3With switching tube V
2Conducting simultaneously or by) alternation, and make switching tube V
1, switching tube V
2Conducting or the width that ends equate, in case switch transformer T D.C. magnetic biasing.
As switching tube V
1(the switching tube V of conducting under the switching signal effect
2, switching tube V
3By) time finish two functions: the one, the energy storage that mains supply Vi is imported is in inductance L
1In, the 2nd, by the elementary winding N of switch transformer T
P1, elementary winding N
P2, diode D
5, diode D
7, capacitor C
1, capacitor C
2Form the loop capacitor C
1, capacitor C
2The energy of middle storage is coupled to output by switch transformer T, sets up output voltage V
0As switching tube V
1After ending under the effect of switching signal, switching tube V
2, switching tube V
3Conducting simultaneously, inductance L
1The energy of middle storage discharges by three paths, and one is to pass through inductance L
1, capacitor C
2, diode D
6, capacitor C
1, diode D
2(or diode D
1), mains supply Vi, diode D
3(or diode D
4) form the loop, inductance L
1In energy storage at capacitor C
1, capacitor C
2In; The 2nd, pass through inductance L
1, switch transformer T elementary winding N
P2, switching tube V
2, capacitor C
1, diode D
2(diode D
1), mains supply Vi, diode D
3(or diode D
4) pass through the coupling of switch transformer T inductance L
1In energy directly pass to output; The 3rd, pass through inductance L
1, capacitor C
2, switching tube V
3, switch transformer T elementary winding N
P1, diode D
2(or diode D
1), mains supply Vi, diode D
3(or diode D
4) being split into the loop, the coupling by opening transformer T is L
1Energy directly pass to output, improved energy transmission efficiency, reduced switching tube V
1Current stress; As switching tube V
2, switching tube V
3After the switching signal effect ended, this circuit had been finished a work period to this.
After the course of work of having understood Fig. 3 and embodiment shown in Figure 4, the course of work of embodiment illustrated in figures 1 and 2 is readily appreciated that, no longer narration.
Claims (6)
1. single-stage isolated form power factor correcting converter, this device comprises city's bridge rectifier circuit and rectifying and wave-filtering output circuit, city's bridge rectifier circuit minus earth, the anodal inductance L that connects of city's bridge rectifier circuit
1Front end is characterized in that inductance L
1Rear end, switching tube V
1Upper end, capacitor C
2Anodal reaching gone up series circuit upper end tandem, last series circuit lower end, diode D
6Negative pole and capacitor C
1Anodal tandem, capacitor C
1Minus earth, capacitor C
2Negative pole, diode D
6Anodal series circuit upper end tandem down, following series circuit lower end ground connection, the elementary winding N of switch transformer of reaching
P2Be connected in the series circuit the elementary winding N of switch transformer
P1Be connected on down in the series circuit, the secondary winding of switch transformer is connected to the rectifying and wave-filtering output circuit.
2. single-stage isolated form power factor correcting converter according to claim 1 is characterized in that series circuit is the elementary winding N of the upper end of last series circuit by switch transformer
P2The upper end form, the mid point of last series circuit is by the elementary winding N of switch transformer
P2The lower end connect diode D
5Negative pole form, the lower end of last series circuit is by diode D
5Positive pole form.
3. single-stage isolated form power factor correcting converter according to claim 1 is characterized in that series circuit also can be the upper end of series circuit by diode D
5Negative pole form, the mid point of last series circuit is by diode D
5Positive pole and the elementary winding N of switch transformer
P2The upper end be connected to form, the lower end of last series circuit is by the elementary winding N of switch transformer
P2The lower end form.
4. single-stage isolated form power factor correcting converter according to claim 1 is characterized in that following series circuit is to descend the upper end of series circuit by diode D
7Negative pole form, the mid point of following series circuit is by diode D
7Positive pole and the elementary winding N of switch transformer
P1The upper end be connected to form, the lower end of following series circuit is by the elementary winding N of switch transformer
P1The lower end form.
5. single-stage isolated form power factor correcting converter according to claim 1 is characterized in that series circuit also can be down the elementary winding N of the upper end of series circuit by switch transformer down
P1The upper end form, the mid point of following series circuit is by the elementary winding N of switch transformer
P1The lower end connect diode D
7Negative pole form, the lower end of following series circuit is by diode D
7Positive pole form.
6. single-stage isolated form power factor correcting converter according to claim 1 is characterized in that the diode D in the series circuit
5Be parallel with a switching tube V
2, switching tube V
2Upper end and diode D
5The negative pole tandem, switching tube V
2Lower end and diode D
5Anodal tandem; Diode D in the following series circuit
7Be parallel with a switching tube V
3, switching tube V
3Upper end and diode D
7The negative pole tandem, switching tube V
3Lower end and diode D
7Anodal tandem.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02293135 CN2595064Y (en) | 2002-12-28 | 2002-12-28 | Separateds single-stage power factor correcting converter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02293135 CN2595064Y (en) | 2002-12-28 | 2002-12-28 | Separateds single-stage power factor correcting converter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2595064Y true CN2595064Y (en) | 2003-12-24 |
Family
ID=33751225
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02293135 Expired - Fee Related CN2595064Y (en) | 2002-12-28 | 2002-12-28 | Separateds single-stage power factor correcting converter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2595064Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102714460A (en) * | 2010-10-07 | 2012-10-03 | 富士电机株式会社 | Power transformer device |
-
2002
- 2002-12-28 CN CN 02293135 patent/CN2595064Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102714460A (en) * | 2010-10-07 | 2012-10-03 | 富士电机株式会社 | Power transformer device |
| CN102714460B (en) * | 2010-10-07 | 2016-06-22 | 富士电机株式会社 | Power converter |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |