CN101867304A - Secondary side rectification circuit using DC converter of high-frequency three-phase transformer - Google Patents
Secondary side rectification circuit using DC converter of high-frequency three-phase transformer Download PDFInfo
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Abstract
The invention discloses a secondary side rectification circuit using a DC converter of a high-frequency three-phase transformer, which comprises 12 rectifier diodes and a high-frequency three-phase transformer, wherein the primary side winding of the high-frequency three-phase transformer is in triangular connection. The invention utilizes three full-bridge rectifier circuits connected in series to realize output boost, and compared with the conventional three-phase rectifier circuit, the backward voltage at both ends of each rectifier diode is one half of the output voltage.
Description
Technical field
The present invention relates to a kind of secondary side rectification circuit, be to use the secondary side rectification circuit of DC converter of high-frequency three-phase transformer specifically.
Background technology
The conventional secondary three phase rectifier high frequency transformer high-gain DC/DC converter that Δ/Y connects, comprise six power switch pipes, six output rectifier diodes, an input filter capacitor, an output inductor, an output filter capacitor, and a high-frequency three-phase transformer, the former limit winding of high-frequency three-phase transformer is that delta connection, secondary winding are star connection, Y connection.The source electrode of first power switch pipe links to each other with the drain electrode of the 4th power switch pipe and an end of the former triangle edge winding of high-frequency three-phase transformer, the source electrode of the 3rd power switch pipe links to each other with the drain electrode of the 6th power switch pipe and the other end of the former triangle edge winding of high-frequency three-phase transformer, the source electrode of the 5th power switch pipe links to each other with the drain electrode of second power switch pipe and last end of the former triangle edge winding of high-frequency three-phase transformer, the anode of first rectifier diode links to each other with the negative electrode of the 4th rectifier diode and an end of high-frequency three-phase transformer secondary star connection, Y connection winding, the anode of the 3rd rectifier diode links to each other with the negative electrode of the 6th rectifier diode and the other end of high-frequency three-phase transformer secondary star connection, Y connection winding, and the anode of the 5th rectifier diode links to each other with the negative electrode of second rectifier diode and last end of high-frequency three-phase transformer secondary star connection, Y connection winding.This converter is when steady operation, and the reverse voltage when the secondary rectifier diode ends equals output voltage.Generally speaking, output voltage is higher, thereby the secondary rectifier diode will bear higher voltage stress.
Summary of the invention
The object of the present invention is to provide a kind of secondary side rectification circuit that uses DC converter of high-frequency three-phase transformer, the high-gain isolated form DC/DC converter of connecting for high frequency transformer Δ/Y provides secondary rectifier diode two ends lower voltage stress, improves the operating efficiency of converter.
The secondary side rectification circuit of use DC converter of high-frequency three-phase transformer of the present invention, former limit power conversion circuit is identical with the high-gain DC/DC converter that the high frequency transformer Δ/Y of conventional secondary three phase rectifier connects, comprise six power switch pipes, an input filter capacitor, and a high-frequency three-phase transformer, the former limit winding of high-frequency three-phase transformer is delta connection.And the secondary diode rectifier circuit comprises an output inductor, an output filter capacitor, and 12 rectifier diodes, the anode of first rectifier diode links to each other with the negative electrode of second rectifier diode and an end of high-frequency three-phase transformer secondary first winding, the anode of the 3rd rectifier diode links to each other with the negative electrode of the 4th rectifier diode and the other end of high-frequency three-phase transformer secondary first winding, the anode of the 5th rectifier diode links to each other with the negative electrode of the 7th rectifier diode and an end of high-frequency three-phase transformer secondary second winding, the anode of the 6th rectifier diode links to each other with the negative electrode of the 8th rectifier diode and the other end of high-frequency three-phase transformer secondary second winding, the anode of the 11 rectifier diode links to each other with the negative electrode of the 9th rectifier diode and an end of the high-frequency three-phase transformer secondary tertiary winding, and the anode of the 12 rectifier diode links to each other with the negative electrode of the tenth rectifier diode and the other end of the high-frequency three-phase transformer secondary tertiary winding.The anode of second rectifier diode links to each other with the anode of the 4th rectifier diode, and the negative electrode of the 5th rectifier diode links to each other with the negative electrode of the 6th rectifier diode, both is linked to each other again; The anode of the 7th rectifier diode links to each other with the anode of the 8th rectifier diode, and the negative electrode of the 11 rectifier diode links to each other with the negative electrode of the 12 rectifier diode, both is linked to each other again.
Former limit circuit is identical with the high-gain DC/DC converter that the high frequency transformer Δ/Y of conventional secondary three phase rectifier connects, be the three-phase bridge power conversion circuit, and the complementary symmetry work of upper and lower power switch pipe, can obtain one group of trapezoidal wave voltage at the transformer secondary, even the turn ratio of high-frequency three-phase transformer is less, still can obtain higher output voltage.
The secondary side rectification circuit of use DC converter of high-frequency three-phase transformer of the present invention comprises 12 rectifier diodes and a high-frequency three-phase transformer, and the former limit winding of high-frequency three-phase transformer connects for the △ type.The present invention has utilized the full bridge rectifier of three series connection to realize exporting and has boosted, conventional rectified three-phase circuit secondary rectifier diode by the time reverse voltage equal output voltage, and the reverse voltage that uses each rectifier diode two ends in the secondary side rectification circuit of high-frequency three-phase transformer DC/DC converter is half of output voltage.
The present invention compared with prior art has following advantage and effect: the present invention utilizes the notion of high-frequency three-phase transformer, and Transformer Winding is carried out Δ/Y and connect and realize the output of secondary staircase waveform, and has utilized the full bridge rectifier of three series connection to realize that output boosts.Compare with the secondary rectified three-phase circuit of routine, the reverse voltage at each rectifier diode two ends only is half of output voltage.
Description of drawings
Fig. 1 is the circuit diagram of the secondary side rectification circuit of use DC converter of high-frequency three-phase transformer of the present invention;
Fig. 2 is the steady operation oscillogram of the secondary side rectification circuit of use DC converter of high-frequency three-phase transformer of the present invention.
Embodiment
Referring to Fig. 1, the secondary side rectification circuit of use DC converter of high-frequency three-phase transformer of the present invention, former limit power conversion circuit is identical with the high-gain DC/DC converter that the high frequency transformer Δ/Y of conventional secondary three phase rectifier connects, comprise six power switch pipe Q1, Q2, Q3, Q4, Q5, Q6, an input filter capacitor Cin, and a high-frequency three-phase transformer TX1, the former limit winding of high-frequency three-phase transformer is delta connection.And the secondary diode rectifier circuit comprises an output inductor Lout, and an output filter capacitor Cout reaches 12 rectifier diode D1, D2, D3, D4, D5, D6, D7, D8, D9, D10, D11, D12.
The anode of D1 links to each other with an end of the negative electrode of D2 and high-frequency three-phase transformer secondary first winding, the anode of D3 links to each other with the other end of the negative electrode of D4 and high-frequency three-phase transformer secondary first winding, the anode of D5 links to each other with an end of the negative electrode of D7 and high-frequency three-phase transformer secondary second winding, the anode of D6 links to each other with the other end of the negative electrode of D8 and high-frequency three-phase transformer secondary second winding, the anode of D11 links to each other with an end of the negative electrode of D9 and the high-frequency three-phase transformer secondary tertiary winding, and the anode of D12 links to each other with the other end of the negative electrode of D10 and the high-frequency three-phase transformer secondary tertiary winding.The anode of D2 links to each other with the anode of D4, and the negative electrode of D5 links to each other with the negative electrode of D6, both is linked to each other again; The anode of D7 links to each other with the anode of D8, and the negative electrode of D11 links to each other with the negative electrode of D12, both is linked to each other again.
The duty ratio of power switch pipe is 0.5 o'clock, in the complete work period, uses the secondary side rectification circuit of DC converter of high-frequency three-phase transformer to have six operation modes, as shown in Figure 2.
T0～t1: power switch pipe Q1, Q6, Q5 conducting, A point voltage are input voltage V
In, the B point voltage is zero, the C point voltage is input voltage V
InSo, V
AB=V
In, V
BC=-V
In, V
CA=0, because V
A0=V
ABN, V
B0=V
BCN, V
C0=V
CAN, N=Ns/Np, Np are the number of turns of the former limit of transformer winding; Ns is the number of turns of transformer secondary winding.Therefore, can obtain V
Ab=2V
InN, V
Bc=-V
InN, V
Ca=-V
InN is because V
AbAbsolute value the highest, so secondary rectifier diode D6, D7, D1, D4 and D9～D12 conducting, output voltage during this period of time is V
Out=2V
InN.
T1～t2: power switch pipe Q2, Q1, Q6 conducting, A point voltage are input voltage V
In, the B point voltage is zero, the C point voltage is an input voltage zero, so V
AB=V
In, V
BC=0, V
CA=-V
In, because V
A0=V
ABN, V
B0=V
BCN, V
C0=V
CAN.Therefore, can obtain V
Ab=V
InN, V
Bc=V
InN, V
Ca=-2V
InN is because V
CaAbsolute value the highest, so secondary rectifier diode D1, D4, D9, D12 and D5～D8 conducting, output voltage during this period of time is V
Out=2V
InN.
T2～t3: power switch pipe Q3, Q2, Q1 conducting, A point voltage are input voltage V
In, the B point voltage is input voltage V
In, the C point voltage is zero, so V
AB=0, V
BC=V
In, V
CA=-V
In, because V
A0=V
ABN, V
B0=V
BCN, V
C0=V
CAN.Therefore, can obtain V
Ab=-V
InN, V
Bc=2V
InN, V
Ca=-V
InN is because V
BcAbsolute value the highest, so secondary rectifier diode D9, D12, D5, D8 and D1～D4 conducting, output voltage during this period of time is V
Out=2V
InN.
T3～t4: power switch pipe Q4, Q3, Q2 conducting, A point voltage are zero, and the B point voltage is input voltage V
In, the C point voltage is zero, so V
AB=-V
In, V
BC=V
In, V
CA=0, because V
A0=V
ABN, V
B0=V
BCN, V
C0=V
CAN.Therefore, can obtain V
Ab=-2V
InN, V
Bc=V
InN, V
Ca=V
InN is because V
AbAbsolute value the highest, so secondary rectifier diode D5, D8, D2, D3 and D9～D12 conducting, output voltage during this period of time is V
Out=2V
InN.
T4～t5: power switch pipe Q5, Q4, Q3 conducting, A point voltage are zero, and the B point voltage is input voltage V
In, the C point voltage is input voltage V
InSo, V
AB=-V
In, V
BC=0, V
CA=V
In, because V
A0=V
ABN, V
B0=V
BCN, V
C0=V
CAN.Therefore, can obtain V
Ab=-V
InN, V
Bc=-V
InN, V
Ca=2V
InN is because V
CaAbsolute value the highest, so secondary rectifier diode D2, D3, D10, D11 and D5～D8 conducting, output voltage during this period of time is V
Out=2V
InN.
T5～t6: power switch pipe Q6, Q5, Q4 conducting, A point voltage are zero, and the B point voltage is zero, and the C point voltage is input voltage V
InSo, V
AB=0, V
BC=-V
In, V
CA=V
In, because V
A0=V
ABN, V
B0=V
BCN, V
C0=V
CAN.Therefore, can obtain V
Ab=V
InN, V
Bc=-2V
InN, V
Ca=V
InN is because V
BcAbsolute value the highest, so secondary rectifier diode D10, D11, D6, D7 and D1～D4 conducting, output voltage during this period of time is V
Out=2V
InN.
From above analytic process as can be seen, V is all arranged all the time in each operation mode
Out=2V
InN, the high-gain DC/DC converter that connects with the high frequency transformer Δ/Y of conventional secondary three phase rectifier is identical, and the secondary winding still can obtain the voltage trapezoidal wave, thereby can realize multiplication of voltage output.The filter inductance Lout of output and filter capacitor Cout be the commutation course of secondary rectifier diode smoothly, reduces output current ripple.Conventional rectified three-phase circuit secondary rectifier diode by the time reverse voltage equal output voltage, and high frequency transformer Δ/Y to connect the reverse voltage at each rectifier diode two ends in the secondary side rectification circuit of DC/DC converter be half of output voltage.
Claims (2)
1. secondary side rectification circuit that uses DC converter of high-frequency three-phase transformer, it is characterized in that comprising an output inductor (Lout), an output filter capacitor (Cout), and 12 rectifier diode (D1, D2, D3, D4, D5, D6, D7, D8, D9, D10, D11, D12), the anode of first rectifier diode (D1) links to each other with the negative electrode of second rectifier diode (D2) and an end of high-frequency three-phase transformer secondary first winding, the anode of the 3rd rectifier diode (D3) links to each other with the negative electrode of the 4th rectifier diode (D4) and the other end of high-frequency three-phase transformer secondary first winding, the anode of the 5th rectifier diode (D5) links to each other with the negative electrode of the 7th rectifier diode (D7) and an end of high-frequency three-phase transformer secondary second winding, the anode of the 6th rectifier diode (D6) links to each other with the negative electrode of the 8th rectifier diode (D8) and the other end of high-frequency three-phase transformer secondary second winding, the anode of the 11 rectifier diode (D11) links to each other with the negative electrode of the 9th rectifier diode (D9) and an end of the high-frequency three-phase transformer secondary tertiary winding, and the anode of the 12 rectifier diode (D12) links to each other with the negative electrode of the tenth rectifier diode (D10) and the other end of the high-frequency three-phase transformer secondary tertiary winding.The anode of second rectifier diode (D2) links to each other with the anode of the 4th rectifier diode (D4), and the negative electrode of the 5th rectifier diode (D5) links to each other with the negative electrode of the 6th rectifier diode (D6), both is linked to each other again; The anode of the 7th rectifier diode (D7) links to each other with the anode of the 8th rectifier diode (D8), and the negative electrode of the 11 rectifier diode (D11) links to each other with the negative electrode of the 12 rectifier diode (D12), both is linked to each other again.
2. rectification circuit according to claim 1, it is characterized in that former limit circuit is identical with the high-gain DC/DC converter that the high frequency transformer Δ/Y of conventional secondary three phase rectifier connects, be the three-phase bridge power conversion circuit, and the complementary symmetry work of upper and lower power switch pipe can obtain one group of trapezoidal wave voltage at the transformer secondary.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010206633 CN101867304A (en) | 2010-06-21 | 2010-06-21 | Secondary side rectification circuit using DC converter of high-frequency three-phase transformer |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010206633 CN101867304A (en) | 2010-06-21 | 2010-06-21 | Secondary side rectification circuit using DC converter of high-frequency three-phase transformer |
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| CN101867304A true CN101867304A (en) | 2010-10-20 |
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|---|---|---|---|
| CN 201010206633 Pending CN101867304A (en) | 2010-06-21 | 2010-06-21 | Secondary side rectification circuit using DC converter of high-frequency three-phase transformer |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9019732B2 (en) | 2011-07-04 | 2015-04-28 | Abb Technology Ag | High voltage DC/DC converter |
| RU2660131C1 (en) * | 2017-04-06 | 2018-07-05 | Федеральное государственное унитарное предприятие "Крыловский государственный научный центр" | Multilevel voltage rectifier |
| CN113949274A (en) * | 2021-09-26 | 2022-01-18 | 杭州云视物联科技有限公司 | Multi-input-port DC-DC conversion circuit |
| CN114884363A (en) * | 2022-05-10 | 2022-08-09 | 西南交通大学 | Double LLC resonant converter with six-time gain ratio and control method thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2492005Y (en) * | 2001-04-27 | 2002-05-15 | 尤大千 | Three-phase series boosting power rectifier |
| CN101521468A (en) * | 2008-11-14 | 2009-09-02 | 浙江大学 | High-frequency three-phase medium-voltage power supply rectifier |
| KR20100055233A (en) * | 2008-11-17 | 2010-05-26 | 한국에너지기술연구원 | Current-fed three phase half-bridge dc-dc converter for power conversion apparatus |
-
2010
- 2010-06-21 CN CN 201010206633 patent/CN101867304A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2492005Y (en) * | 2001-04-27 | 2002-05-15 | 尤大千 | Three-phase series boosting power rectifier |
| CN101521468A (en) * | 2008-11-14 | 2009-09-02 | 浙江大学 | High-frequency three-phase medium-voltage power supply rectifier |
| KR20100055233A (en) * | 2008-11-17 | 2010-05-26 | 한국에너지기술연구원 | Current-fed three phase half-bridge dc-dc converter for power conversion apparatus |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9019732B2 (en) | 2011-07-04 | 2015-04-28 | Abb Technology Ag | High voltage DC/DC converter |
| RU2660131C1 (en) * | 2017-04-06 | 2018-07-05 | Федеральное государственное унитарное предприятие "Крыловский государственный научный центр" | Multilevel voltage rectifier |
| CN113949274A (en) * | 2021-09-26 | 2022-01-18 | 杭州云视物联科技有限公司 | Multi-input-port DC-DC conversion circuit |
| CN113949274B (en) * | 2021-09-26 | 2023-10-03 | 杭州云视物联科技有限公司 | DC-DC conversion circuit with multiple input ports |
| CN114884363A (en) * | 2022-05-10 | 2022-08-09 | 西南交通大学 | Double LLC resonant converter with six-time gain ratio and control method thereof |
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Application publication date: 20101020 |