CN203233305U - Power factor correcting circuit of single-phase arc welding inverter - Google Patents
Power factor correcting circuit of single-phase arc welding inverter Download PDFInfo
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- CN203233305U CN203233305U CN2013201923310U CN201320192331U CN203233305U CN 203233305 U CN203233305 U CN 203233305U CN 2013201923310 U CN2013201923310 U CN 2013201923310U CN 201320192331 U CN201320192331 U CN 201320192331U CN 203233305 U CN203233305 U CN 203233305U
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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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Abstract
The utility model discloses a power factor correcting circuit of a single-phase arc welding inverter and the power factor correcting circuit comprises a control circuit and a boost circuit. The boost circuit comprises a fifth diode, a sixth diode, a seventh diode, an eighth diode and a second inductor; a first input terminal of alternating current is connected with a positive electrode of the fifth diode and a negative electrode of the seventh electrode; a second input terminal of the alternating current is connected with a positive electrode of the sixth diode and a negative electrode of the eighth electrode; a positive electrode of the fifth diode is connected with a negative electrode of the sixth diode and a first terminal of the second inductor; and a positive electrode of the seventh diode is connected with a positive electrode of the eighth diode. The use of a lossless absorption circuit in the power factor correcting circuit of the single-phase arc welding inverter achieves the stress reduction of a power switching device of voltage circuits, the efficiency improvement of a converter circuit and the electromagnetic interference reduction of the converter circuit.
Description
Technical field
The utility model relates to a kind of power factor correction circuit, relates in particular to a kind of power factor correction circuit of single-phase arc welding inverter.
Background technology
At present, the electric/electronic device in American-European market will be forced the relevant criterion of the border electrician committee of state of enforcement, in order to satisfy the relevant criterion of IEC6300, concerning the single-phase inversion welding machine, adopts the power factor (PF) circuit to be one and selects preferably.Existing power factor (PF) circuit is very ripe, adopts two closed-loop control strategies of outer voltage, current inner loop mostly, and the mode of the degenerative booster circuit of average current realizes.But the power switch of booster circuit is hard switching, power switch can bear bigger stress, also can cause the electromagnetic interference that religion is big, the soft switch technique of existing zero voltage transition or zero current transition, though can realize the soft switch of main switch, but auxiliary switch remains hard switching, and additional circuit makes control circuit more complicated.Conventional appearance resistance absorbs circuit, though can reduce switch stress, again the energy of absorption circuit is passed to power supply or load, improves efficient and the Electro Magnetic Compatibility of system.
The utility model content
The purpose of this utility model just is to provide in order to address the above problem the power factor correction circuit of a kind of high efficiency, jamproof single-phase arc welding inverter.
In order to achieve the above object, the utility model has adopted following technical scheme:
A kind of power factor correction circuit of single-phase arc welding inverter, comprise control circuit and booster circuit, described booster circuit comprises the 5th diode, the 6th diode, the 7th diode, the 8th diode and second inductance, the first input end of alternating current is connected with the positive pole of described the 5th diode and the negative pole of described the 7th diode respectively, second input of alternating current is connected with the positive pole of described the 6th diode and the negative pole of described the 8th diode respectively, the negative pole of described the 5th diode is connected with the negative pole of described the 6th diode and first end of described second inductance respectively, and the positive pole of described the 7th diode is connected with the positive pole of described the 8th diode.
Particularly, described control circuit comprises drive circuit, hall device, comparator, the current error amplifier, voltage error amplifier, multiplier, metal-oxide-semiconductor, first inductance, first electric capacity, second electric capacity, the 3rd electric capacity, first diode, second diode, the 3rd diode, the 4th diode and resistance, the drain electrode of described metal-oxide-semiconductor respectively with second end of described second inductance, the positive pole of described the 4th diode, first end of the positive pole of described first diode and described the 3rd electric capacity is connected, the negative pole of described the 4th diode respectively with the negative pole of described the 3rd diode, first end of described second electric capacity, first end of described resistance and the signal input part of described voltage error amplifier are connected, second end of described the 3rd electric capacity is connected with the positive pole of described the 3rd diode and the negative pole of described second diode respectively, the negative pole of described first diode is connected with first end of described first electric capacity and first end of described first inductance respectively, second end of described first inductance is connected with the positive pole of described second diode, second end of described first electric capacity respectively with first end of described hall device, the source electrode of described metal-oxide-semiconductor, second end of described second electric capacity and second end of described resistance are connected, second end of described hall device is connected with the positive pole of described the 7th diode, the 3rd end of described hall device is connected with the signal input part of described current error amplifier and the signal output part of described multiplier respectively, the signal output part of described current error amplifier is connected with the in-phase output end of described comparator, the signal output part of described comparator is connected with the signal input part of described drive circuit, the signal output part of described drive circuit is connected with the grid of described metal-oxide-semiconductor, and the signal input part of described multiplier is connected with the negative pole of described the 5th diode and the signal output part of described voltage error amplifier respectively.
The beneficial effects of the utility model are:
The power factor correction circuit of the single-phase arc welding inverter of the utility model adopts lossless absorption circuit, reduces the stress of potential circuit device for power switching, has improved the efficient of translation circuit, has reduced the electromagnetic interference of translation circuit.
Description of drawings
Fig. 1 is the circuit diagram of the power factor correction circuit of the single-phase arc welding inverter of the utility model.
Embodiment
The utility model is described in further detail below in conjunction with accompanying drawing:
As shown in Figure 1, the power factor correction circuit of the single-phase arc welding inverter of the utility model, comprise control circuit and booster circuit, booster circuit comprises the 5th diode D5, the 6th diode D6, the 7th diode D7, the 8th diode D8 and second inductance L 2, the first input end of alternating current is connected with the positive pole of the 5th diode D5 and the negative pole of the 7th diode D7 respectively, second input of alternating current is connected with the positive pole of the 6th diode D6 and the negative pole of the 8th diode D8 respectively, the negative pole of the 5th diode D5 is connected with the negative pole of the 6th diode D6 and first end of second inductance L 2 respectively, and the positive pole of the 7th diode D7 is connected with the positive pole of the 8th diode D8.
Control circuit comprises drive circuit, hall device, comparator IC1, current error amplifier IC2, voltage error amplifier IC3, multiplier, metal-oxide-semiconductor M, first inductance L 1, first capacitor C 1, second capacitor C 2, the 3rd capacitor C 3, the first diode D1, the second diode D2, the 3rd diode D3, the 4th diode D4 and resistance R, the drain electrode of metal-oxide-semiconductor M respectively with second end of second inductance L 2, the positive pole of the 4th diode D4, the positive pole of the first diode D1 is connected with first end of the 3rd capacitor C 3, the negative pole of the 4th diode D4 respectively with the negative pole of the 3rd diode D3, first end of second capacitor C 2, first end of resistance R is connected with the signal input part of voltage error amplifier IC3, second end of the 3rd capacitor C 3 is connected with the positive pole of the 3rd diode D3 and the negative pole of the second diode D2 respectively, the negative pole of the first diode D1 is connected with first end of first capacitor C 1 and first end of first inductance L 1 respectively, second end of first inductance L 1 is connected with the positive pole of the second diode D2, second end of first capacitor C 1 respectively with first end of hall device, the source electrode of metal-oxide-semiconductor M, second end of second capacitor C 2 and second end of resistance R are connected, second end of hall device is connected with the positive pole of the 7th diode D7, the 3rd end of hall device is connected with the signal input part of current error amplifier IC2 and the signal output part of multiplier respectively, the signal output part of current error amplifier IC2 is connected with the in-phase output end of comparator IC1, the signal output part of comparator IC1 is connected with the signal input part of drive circuit, the signal output part of drive circuit is connected with the grid of metal-oxide-semiconductor M, and the signal input part of multiplier is connected with the negative pole of the 5th diode D5 and the signal output part of voltage error amplifier IC3 respectively.
The operation principle of the power factor correction circuit of the single-phase arc welding inverter of use the utility model is as follows:
Defeated people's single-phase alternating current process bridge diode rectification, if the metal-oxide-semiconductor M of power factor (PF) circuit is in conducting state, second inductance L 2 stored energy from electrical network, arc welding inverter institute energy requirement is provided by output capacitance; If metal-oxide-semiconductor M turn-offs, the alternating current of input and second inductance L 2 are together, be the power supply of output capacitance and arc welding inverter by the 4th diode D4, alternating current maximum input voltage 270V, requirement according to booster circuit, the direct voltage of determining output is 400V, arc welding inverter power supply for the back, control circuit adopts two closed-loop controls of two standards, outer shroud is the voltage negative feedback control loop, and the output voltage that is used for stablizing pfc circuit is 400V, and interior ring is the Current Negative Three-Point Capacitance control ring, be used for following the tracks of the sine wave of electrical network, realize Active PFC.
Claims (2)
1. the power factor correction circuit of a single-phase arc welding inverter, it is characterized in that: comprise control circuit and booster circuit, described booster circuit comprises the 5th diode, the 6th diode, the 7th diode, the 8th diode and second inductance, the first input end of alternating current is connected with the positive pole of described the 5th diode and the negative pole of described the 7th diode respectively, second input of alternating current is connected with the positive pole of described the 6th diode and the negative pole of described the 8th diode respectively, the negative pole of described the 5th diode is connected with the negative pole of described the 6th diode and first end of described second inductance respectively, and the positive pole of described the 7th diode is connected with the positive pole of described the 8th diode.
2. the power factor correction circuit of single-phase arc welding inverter according to claim 1, it is characterized in that: described control circuit comprises drive circuit, hall device, comparator, the current error amplifier, voltage error amplifier, multiplier, metal-oxide-semiconductor, first inductance, first electric capacity, second electric capacity, the 3rd electric capacity, first diode, second diode, the 3rd diode, the 4th diode and resistance, the drain electrode of described metal-oxide-semiconductor respectively with second end of described second inductance, the positive pole of described the 4th diode, first end of the positive pole of described first diode and described the 3rd electric capacity is connected, the negative pole of described the 4th diode respectively with the negative pole of described the 3rd diode, first end of described second electric capacity, first end of described resistance and the signal input part of described voltage error amplifier are connected, second end of described the 3rd electric capacity is connected with the positive pole of described the 3rd diode and the negative pole of described second diode respectively, the negative pole of described first diode is connected with first end of described first electric capacity and first end of described first inductance respectively, second end of described first inductance is connected with the positive pole of described second diode, second end of described first electric capacity respectively with first end of described hall device, the source electrode of described metal-oxide-semiconductor, second end of described second electric capacity and second end of described resistance are connected, second end of described hall device is connected with the positive pole of described the 7th diode, the 3rd end of described hall device is connected with the signal input part of described current error amplifier and the signal output part of described multiplier respectively, the signal output part of described current error amplifier is connected with the in-phase output end of described comparator, the signal output part of described comparator is connected with the signal input part of described drive circuit, the signal output part of described drive circuit is connected with the grid of described metal-oxide-semiconductor, and the signal input part of described multiplier is connected with the negative pole of described the 5th diode and the signal output part of described voltage error amplifier respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013201923310U CN203233305U (en) | 2013-04-17 | 2013-04-17 | Power factor correcting circuit of single-phase arc welding inverter |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013201923310U CN203233305U (en) | 2013-04-17 | 2013-04-17 | Power factor correcting circuit of single-phase arc welding inverter |
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| Publication Number | Publication Date |
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| CN203233305U true CN203233305U (en) | 2013-10-09 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2013201923310U Expired - Fee Related CN203233305U (en) | 2013-04-17 | 2013-04-17 | Power factor correcting circuit of single-phase arc welding inverter |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107659139A (en) * | 2017-11-08 | 2018-02-02 | 浙江颐顿机电有限公司 | A kind of passive power factor corrective circuit |
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2013
- 2013-04-17 CN CN2013201923310U patent/CN203233305U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107659139A (en) * | 2017-11-08 | 2018-02-02 | 浙江颐顿机电有限公司 | A kind of passive power factor corrective circuit |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20131009 Termination date: 20140417 |