CN1967993A - Double buck/boost two-way AC chopper - Google Patents
Double buck/boost two-way AC chopper Download PDFInfo
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- CN1967993A CN1967993A CN 200610096870 CN200610096870A CN1967993A CN 1967993 A CN1967993 A CN 1967993A CN 200610096870 CN200610096870 CN 200610096870 CN 200610096870 A CN200610096870 A CN 200610096870A CN 1967993 A CN1967993 A CN 1967993A
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- switch
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- 230000015572 biosynthetic process Effects 0.000 claims description 2
- 239000003990 capacitor Substances 0.000 abstract description 9
- 230000002457 bidirectional effect Effects 0.000 abstract description 3
- 238000006243 chemical reaction Methods 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 4
- 230000006837 decompression Effects 0.000 description 3
- 230000009466 transformation Effects 0.000 description 3
- 230000003750 conditioning effect Effects 0.000 description 2
- 238000011217 control strategy Methods 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 230000001939 inductive effect Effects 0.000 description 2
- 239000011159 matrix material Substances 0.000 description 2
- 230000000630 rising effect Effects 0.000 description 2
- 238000005070 sampling Methods 0.000 description 2
- HEZMWWAKWCSUCB-PHDIDXHHSA-N (3R,4R)-3,4-dihydroxycyclohexa-1,5-diene-1-carboxylic acid Chemical compound O[C@@H]1C=CC(C(O)=O)=C[C@H]1O HEZMWWAKWCSUCB-PHDIDXHHSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004146 energy storage Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 230000002441 reversible effect Effects 0.000 description 1
- 230000003245 working effect Effects 0.000 description 1
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Abstract
The invention relates to a buck/boost bidirectional alterative-current chopper, which comprises power circuit formed by capacitor with one end connected to ground and one parallel alterative-current sine voltage power source; the first buck/boost circuit, and the second buck/boost circuit. The invention has the advantages that: the whole circuit has non arm direct connection, to solve current diversion; and it can realize voltage-decrease voltage-increase AC/AC conversion, to bidirectional transmit energy; and it has low circuit consumption with simple control; and it outputs average voltage value or effective loop-close adjustment.
Description
One, technical field
The present invention relates to a kind of A-A transducer, relate in particular to a kind of two-way AC chopper.
Two, background technology
The friendship alternation changes an important component part as electric and electronic technical field, has obtained a large amount of research in recent years.Tradition AC/AC direct converter research focus is mainly in matrix converter and this two big class of high frequency ac link AC/AC converter.Matrix converter has that input current waveform is good, input power factor is high, harmonic pollution is little, the efficient advantages of higher, but its circuit structure is very complicated, and the control difficulty has limited its application in the middle of actual.High frequency ac link AC/AC variator exists circuit and control complicated problems equally.In recent years, obtained paying attention to and research based on the AC/AC Direct Transform of DC/DC simple topology, its basic ideas are to realize two-wayization of power switch, make basic DC/DC simple topology can realize that AC/AC changes.The bidirectional switch that this quasi-converter uses is that MOS type device and the diode combinations by unidirectional blocking-up in the reality obtains, and the plurality of optional scheme is arranged, and this makes that the quantity of power device is more in this quasi-converter, and this has also increased the complexity of circuit.Must follow strict change of current order when the switch change of current, control is complicated, has big due to voltage spikes during the switching tube change of current.Switching tube change of current problem is the difficult point that the AC/AC converter is realized.And the conventional AC chopper nearly all can only be realized a kind of of decompression transformation or boosting inverter.
Three, summary of the invention
1, technical problem: the technical problem to be solved in the present invention is to solve the difficult problem that the change of current exists in the AC/AC converter, provides a kind of and can realize decompression transformation or boosting inverter simultaneously, realizes two buck/boost two-way AC choppers of energy transmitted in both directions.
2, technical scheme: in order to solve above-mentioned technical problem, of the present invention pair of buck/boost two-way AC chopper comprises by the electric capacity of the end ground connection power circuit that constitutes in parallel with the AC sinusoidal voltage power supply, also comprise a buck/boost circuit and the 2nd buck/boost circuit, in the one buck/boost circuit, the anode of first switch is connected with the output of power circuit, and the negative electrode of first switch is connected with the negative electrode of second switch and by the first inductance ground connection; In the 2nd buck/boost circuit, the negative electrode of the 3rd switch is connected with the output of power circuit, and the anode of the 3rd switch is connected with the anode of the 4th switch and passes through and the second inductance ground connection; The anode of second switch is connected with the negative electrode of the 4th switch in the 2nd buck/boost circuit in the one buck/boost circuit, and one of extraneous load circuit is terminated between the negative electrode of the anode of second switch and the 4th switch.The structure of extraneous load circuit is generally filter capacitor and load is in parallel constitutes, the other end of filter capacitor and load be connected to simultaneously " ".
First switch is connected and composed by the negative electrode of first power diode and the anode of first power switch pipe, second single-way switch is connected and composed by the anode of second power diode and the negative electrode of second power switch pipe, the 3rd single-way switch is connected and composed by the anode of the 3rd power diode and the negative electrode of the 3rd power switch pipe, and the 4th single-way switch is connected and composed by the negative electrode of the 4th power diode and the anode of the 4th power switch pipe.
First single-way switch can be connected and composed by the anode of first power diode and the negative electrode of first power switch pipe; Second single-way switch can be connected and composed by the negative electrode of second power diode and the anode of second power switch pipe; The 3rd single-way switch can be connected and composed by the negative electrode of the 3rd power diode and the anode of the 3rd power switch pipe; The 4th single-way switch can be connected and composed by the anode of the 4th power diode and the negative electrode of the 4th power switch pipe.
Two buck/boost two-way AC choppers that the present invention adopts comprise two buck/boost bridge arm circuit unit, its input side joint power circuit unit, its output side joint output filter capacitor and load circuit, by with two DCDC substantially topology (buck/boost circuit) carry out parallel connection and obtain, can be referred to AC/AC converter based on simple topology, but its starting point is not as being to realize by switch two-wayization based on the AC/AC converter of simple topology, its basic thought is to use the half cycle control strategy, by two buck/boost circuit respectively half period work obtain the output voltage of half, thereby realize the purpose of AC/AC Direct Transform.Since the inherent characteristics of its circuit, the possibility of no bridge arm direct pass, each switching tube drives and need not to be provided with the dead band, can be open-minded simultaneously, fundamentally solved switching tube change of current problem.And can realize the zero current turning-on of part switching tube.Because adopt buck/boost circuits built main circuit topology, converter promptly can be realized decompression transformation, also can realize boosting inverter.The input and the output of this circuit are exchanged, and promptly at original output applied voltage, as output, chopper is the energy operate as normal equally, so this converter is a kind of reversible transducer original power circuit end.
3, beneficial effect: advantage of the present invention is: (1) entire circuit does not have the bridge arm direct pass possibility, need not control dead area, and the afterflow of inductive current nature has fundamentally solved electric current commutation problem; (2) can realize the step-down or the AC/AC conversion of boosting; (3) can realize the energy transmitted in both directions, be a kind of two-way AC chopper; (4) belong in the AC/AC circuit and use device less, circuit loss is little; (5) circuit working is in the half period pattern, and control realizes simple, has also stopped the possibility that circulation produces; (6) can carry out output voltage average value or effective value closed-loop adjustment.
Four, description of drawings]
Fig. 1 is an of the present invention pair of buck/boost two-way AC chopper electrical block diagram;
Fig. 2 is each switch mode schematic diagram of of the present invention pair of buck/boost two-way AC chopper;
Fig. 3 is the main waveform schematic diagram of of the present invention pair of buck/boost two-way AC chopper;
Fig. 4 is the control block diagram that of the present invention pair of buck/boost two-way AC chopper adopts.
Label title among Fig. 1: 1. power circuit; 2. a buck/boost circuit; 3. output filter circuit and load; 4. the 2nd buck/boost circuit;
Main designation in the above-mentioned accompanying drawing: C
1～C
2---filter capacitor.D
1～D
4---power diode.D1～d4---power switch pipe Q
1～Q
4Drive waveforms.Ir---Voltage loop output.Il1---filter inductance L
1Current waveform.Il2---filter inductance L
2Current waveform.L
1～L
2---energy storage inductor.Q
1～Q
4---power switch pipe.R---load impedance.S
1～S
4---single-way switch.u
i---the chopper input voltage.u
o---the chopper output voltage.
Five, embodiment
As shown in Figure 1, two buck/boost two-way AC choppers of present embodiment comprise the capacitor C by an end ground connection
1With the power circuit 1 of AC sinusoidal voltage power supply formation in parallel, also comprise in a buck/boost circuit 2 and the 2nd buck/boost circuit 4, the one buck/boost circuit 2 first switch S
1Anode be connected first switch S with the output of power circuit 1
1Negative electrode and second switch S
2Negative electrode connect and by first inductance L
1Ground connection; In the 2nd buck/boost circuit 4, the 3rd switch S
3Negative electrode be connected the 3rd switch S with the output of power circuit 1
3Anode and the 4th switch S
4Anode connect and by and second inductance L
2Ground connection; Second switch S in the one buck/boost circuit 2
2Anode and the 2nd buck/boost circuit 4 in the 4th switch S
4Negative electrode connect, one of extraneous load circuit 3 is terminated at second switch S
2Anode and the 4th switch S
4Negative electrode between.One of extraneous load circuit 3 is terminated at second switch S
2Anode and the 4th switch S
4Negative electrode between, extraneous load circuit 3 is by filter capacitor C
2Constitute filter capacitor C with load R is in parallel
2Be connected to simultaneously with the other end of load R " ".
First switch S
1By the first power diode D
1The negative electrode and the first power switch pipe Q
1Anode connect and compose the second single-way switch S
2By the second power diode D
2The anode and the second power switch pipe Q
2Negative electrode connect and compose the 3rd single-way switch S
3By the 3rd power diode D
3Anode and the 3rd power switch pipe Q
3Negative electrode connect and compose the 4th single-way switch S
4By the 4th power diode D
4Negative electrode and the 4th power switch pipe Q
4Anode connect and compose.The first single-way switch S
1Also can be by the first power diode D
1The anode and the first power switch pipe Q
1Negative electrode connect and compose; The second single-way switch S
2Also can be by the second power diode D
2The negative electrode and the second power switch pipe Q
2Anode connect and compose; The 3rd single-way switch S
3Also can be by the 3rd power diode D
3Negative electrode and the 3rd power switch pipe Q
3Anode connect and compose; The 4th single-way switch S
4Also can be by the 4th power diode D
4Anode and the 4th power switch pipe Q
4Negative electrode connect and compose.
When the half period of the chopper output negative pole electric current of present embodiment, in the buck/boost circuit 2 of conditioning work, first switch S
1Negative electrode and second switch S
2Negative electrode connect and with first inductance L
1An end connect first switch S
1Anode meet power supply u
iOutput, the first filter inductance L
1Another termination " ".When the half period of chopper output cathode electric current, in the 2nd buck/boost circuit 4 of conditioning work, the 3rd switch S
3Anode and the 4th switch S
4Anode connect and with second inductance L
2An end connect the 3rd switch S
3Negative electrode meet power supply u
iOutput, the second filter inductance L
2Another termination " ".
As shown in Figure 2, be the concrete operation principle and the operation mode of two buck/boost two-way AC choppers:
(comprise filter capacitor C at output current
2Electric current) minus negative half period, a buck/boost circuit (2) work, the 2nd buck/boost circuit (4) is not worked the 3rd switch S
3Normally closed, the 4th switch S
4Normally closed.This moment, circuit comprised two operation modes:
1. operation mode I
Shown in accompanying drawing 2 (a), first switch S
1Open-minded, inductance L
1Current i
L1Linear rising, second switch S
2End.
2. operation mode II
Shown in accompanying drawing 2 (b), first switch S
1Turn-off first switch S
2Conducting, i
L1From second switch S
2Afterflow, linear decline.
Greater than zero positive half cycle, the 2nd buck/boost circuit (4) is worked at output current, and a buck/boost circuit (2) is not worked the 3rd switch S
3Normally closed, the 4th switch S 4 is normally closed.This moment, circuit comprised two operation modes:
3. operation mode III
Shown in accompanying drawing 2 (c), the 3rd switch S
3Open-minded, inductance L
2Current i
L2Linear rising, the 4th switch S
4End.
4. operation mode IV
Shown in accompanying drawing 2 (d), the 3rd switch S
3Turn-off the 4th switch S
4Conducting, i
L2From the 4th switch S
4Afterflow, linear decline.
The circuit key waveforms as shown in Figure 3.At output current zero passage place, i.e. two buck circuit workings positions of switching are owing to exist the inductive current zero passage zone of switching back and forth, when particularly load current is very little when for example unloaded, exist two buck circuit alternately to nurse one's health the section of work, to keep output voltage waveforms.
For realizing above operation principle, two buck/boost two-way AC choppers adopt controlling schemes as shown in Figure 4: sampling and outputting voltage carries out rectifying and wave-filtering and obtains output voltage average value U
Av, with voltage reference U
rObtain Voltage loop output i through the PI computing
r, obtain the PWM modulation signal after Voltage loop output ir and the triangular wave handing-over; The sampling output current carries out logic determines, and the PWM modulation signal is carried out the logic phase-splitting, makes output current S less than zero time
1, S
2Conditioning work, S
3, S
4Turn-off output current S greater than zero time
3, S
4Conditioning work, S
1, S
2Turn-off, above control strategy has well been realized the half period mode of operation of circuit and to the average value of output voltage closed-loop adjustment.
Claims (2)
1, a kind of pair of buck/boost two-way AC chopper comprises the electric capacity (C by an end ground connection
1) with the power circuit (1) of AC sinusoidal voltage power supply formation in parallel, it is characterized in that, also comprise a buck/boost circuit (2) and the 2nd buck/boost circuit (4), in the buck/boost circuit (2), the first switch (S
1) anode be connected the first switch (S with the output of power circuit (1)
1) negative electrode and second switch (S
2) negative electrode connect and by the first inductance (L
1) ground connection; In the 2nd buck/boost circuit (4), the 3rd switch (S
3) negative electrode be connected the 3rd switch (S with the output of power circuit (1)
3) anode and the 4th switch (S
4) anode connect and by and the second inductance (L
2) ground connection; Second switch (S in the one buck/boost circuit (2)
2) anode and the 2nd buck/boost circuit (4) in the 4th switch (S
4) negative electrode connect, one of extraneous load circuit (3) is terminated at second switch (S
2) anode and the 4th switch (S
4) negative electrode between.
2, as claimed in claim 1 pair of buck/boost two-way AC chopper is characterized in that, the first switch (S
1) by the first power diode (D
1) the negative electrode and the first power switch pipe (Q
1) anode connect and compose the second single-way switch (S
2) by the second power diode (D
2) the anode and the second power switch pipe (Q
2) negative electrode connect and compose the 3rd single-way switch (S
3) by the 3rd power diode (D
3) anode and the 3rd power switch pipe (Q
3) negative electrode connect and compose the 4th single-way switch (S
4) by the 4th power diode (D
4) negative electrode and the 4th power switch pipe (Q
4) anode connect and compose.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100968709A CN100433522C (en) | 2006-10-23 | 2006-10-23 | Double buck/boost two-way AC chopper |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100968709A CN100433522C (en) | 2006-10-23 | 2006-10-23 | Double buck/boost two-way AC chopper |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1967993A true CN1967993A (en) | 2007-05-23 |
| CN100433522C CN100433522C (en) | 2008-11-12 |
Family
ID=38076593
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2006100968709A Expired - Fee Related CN100433522C (en) | 2006-10-23 | 2006-10-23 | Double buck/boost two-way AC chopper |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100433522C (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2008022513A1 (en) * | 2006-08-14 | 2008-02-28 | Lasheng Han | A voltage adjustable driver for a sine wave ac power supply |
| CN101860230A (en) * | 2010-04-01 | 2010-10-13 | 重庆大学 | Novel AC-DC-AC converter and control method thereof |
| CN102821531A (en) * | 2012-08-29 | 2012-12-12 | 湖北宝努斯照明电器有限公司 | 'AC-AC (alternating current) regulation and control' based numerical-control HID (high intensity discharge) driving method and driver applying same |
| CN102882401A (en) * | 2012-09-19 | 2013-01-16 | 华为技术有限公司 | Inverter with wide voltage input range and input-stage circuit thereof |
| WO2015085926A1 (en) * | 2013-12-10 | 2015-06-18 | Neal George Stewart | Improved high frequency series ac voltage regulator |
| CN107359783A (en) * | 2017-07-06 | 2017-11-17 | 中国计量大学 | A kind of multi-functional convertor circuit and its control method |
| CN107884652A (en) * | 2017-11-30 | 2018-04-06 | 合肥科威尔电源系统有限公司 | A kind of high-pressure type direct current feed-back type electronic load control system |
| US11463018B2 (en) * | 2017-03-23 | 2022-10-04 | Solaredge Technologies Ltd. | AC to AC converter |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001224164A (en) * | 2000-02-08 | 2001-08-17 | Yuasa Corp | Bidirectional chopper circuit |
| JP4196867B2 (en) * | 2004-03-31 | 2008-12-17 | 株式会社デンソー | Bidirectional buck-boost chopper circuit, inverter circuit using the same, and DC-DC converter circuit |
| JP2006006061A (en) * | 2004-06-18 | 2006-01-05 | Toshiba Corp | Bidirectional chopper circuit |
| JP2006254518A (en) * | 2005-03-08 | 2006-09-21 | Yaskawa Electric Corp | Chopper device and control method for the same |
-
2006
- 2006-10-23 CN CNB2006100968709A patent/CN100433522C/en not_active Expired - Fee Related
Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2008022513A1 (en) * | 2006-08-14 | 2008-02-28 | Lasheng Han | A voltage adjustable driver for a sine wave ac power supply |
| CN101860230A (en) * | 2010-04-01 | 2010-10-13 | 重庆大学 | Novel AC-DC-AC converter and control method thereof |
| CN101860230B (en) * | 2010-04-01 | 2012-01-11 | 重庆大学 | Novel AC-DC-AC converter and control method thereof |
| CN102821531A (en) * | 2012-08-29 | 2012-12-12 | 湖北宝努斯照明电器有限公司 | 'AC-AC (alternating current) regulation and control' based numerical-control HID (high intensity discharge) driving method and driver applying same |
| CN102821531B (en) * | 2012-08-29 | 2015-03-11 | 孝感市捷能特种光源照明器具有限公司 | 'AC-AC (alternating current) regulation and control' based numerical-control HID (high intensity discharge) driving method and driver applying same |
| CN102882401A (en) * | 2012-09-19 | 2013-01-16 | 华为技术有限公司 | Inverter with wide voltage input range and input-stage circuit thereof |
| WO2015085926A1 (en) * | 2013-12-10 | 2015-06-18 | Neal George Stewart | Improved high frequency series ac voltage regulator |
| CN105874701A (en) * | 2013-12-10 | 2016-08-17 | 逸节电子有限公司 | Improved high frequency series AC voltage regulator |
| US9819279B2 (en) | 2013-12-10 | 2017-11-14 | Edge Electrons Limited | High frequency series AC voltage regulator |
| CN105874701B (en) * | 2013-12-10 | 2019-10-29 | 逸节电子有限公司 | High frequency serial AC voltage regulator |
| CN110739861B (en) * | 2013-12-10 | 2021-11-02 | 逸节电子有限公司 | High-frequency series AC voltage regulator |
| US11463018B2 (en) * | 2017-03-23 | 2022-10-04 | Solaredge Technologies Ltd. | AC to AC converter |
| US11949344B2 (en) | 2017-03-23 | 2024-04-02 | Solaredge Technologies Ltd. | DC-to-DC power converter |
| CN107359783A (en) * | 2017-07-06 | 2017-11-17 | 中国计量大学 | A kind of multi-functional convertor circuit and its control method |
| CN107884652A (en) * | 2017-11-30 | 2018-04-06 | 合肥科威尔电源系统有限公司 | A kind of high-pressure type direct current feed-back type electronic load control system |
Also Published As
| Publication number | Publication date |
|---|---|
| CN100433522C (en) | 2008-11-12 |
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