CN1431760A - Dual positive excitated DC-DC power transfer device with soft switch in three electrical levels - Google Patents
Dual positive excitated DC-DC power transfer device with soft switch in three electrical levels Download PDFInfo
- Publication number
- CN1431760A CN1431760A CN03115301A CN03115301A CN1431760A CN 1431760 A CN1431760 A CN 1431760A CN 03115301 A CN03115301 A CN 03115301A CN 03115301 A CN03115301 A CN 03115301A CN 1431760 A CN1431760 A CN 1431760A
- Authority
- CN
- China
- Prior art keywords
- high frequency
- frequency transformer
- converter
- soft switch
- rectification circuit
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Classifications
-
- 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
Abstract
Inserting the inductance between the secondary wilding of the high frequency tranformer and the input end of the rectification circuit of the existing DC-DC converter constitutes the invented DC-DC converter. The DC-DC converter includes the high frequency transformer and the combined type dual positive exciting circuit. The exciting circuit includes the switch parts, the capacitors and the didoes connected to the two primary coils, and the rectification circuit connected to the secondary coil of the high frequency transformer. The all power switches of the simple structured converter are working at the condition of soft switch state so as to reduce the switching loss, increase the efficiency, the working frequency and the power density.
Description
Technical field
The present invention relates to DC-DC converter, especially the soft switch in three electrical levels DC-DC converter.
Background technology
At present, three-level DC-DC converter such as Fig. 1 of adopting two forward converters to combine, it comprises high frequency transformer Tx and is connected to the switching device S1-S4 of two primary coils of high frequency transformer Tx, capacitor C s1-Cs4, the two forward converters of composite type of diode D1-D4 and the rectification circuit formation that is connected to high frequency transformer Tx secondary coil, wherein two of high frequency transformer Tx primary coils respectively with S1, S2, D1, D2 and S3, S4, D3, the unit 1 that D4 forms links to each other with the brachium pontis mid point of unit 2, the secondary winding of high frequency transformer Tx connects the input of the rectification circuit that is made of diode, V1 is a direct-current input power supplying among Fig. 1, C1, C2 is input dividing potential drop electric capacity, Lf is an output inductor, C is an output filter capacitor, and R is load.This DC-DC converter is applied to high voltage input occasion, though there is not the danger of bridge arm direct pass, circuit working is at the hard switching state, and the devices switch loss is big, has limited the raising of operating frequency, has reduced circuit efficiency.
Summary of the invention
The purpose of this invention is to provide a kind of occasion at high input direct voltage, the two forward DC-DC converter of safe and reliable soft switch in three electrical levels to reduce switching loss, improve circuit efficiency.
Technical solution of the present invention is: insert inductance between the input of the high frequency transformer secondary coil of the two forward DC-DC converter of existing three level and rectification circuit.
Two forward DC-the DC converter of soft switch in three electrical levels comprise high frequency transformer and are connected to switching device, electric capacity, the diode of two primary coils of high frequency transformer and are connected to the two forward converters of composite type that the rectification circuit of high frequency transformer secondary coil constitutes, it is characterized in that inserting inductance between the input of high frequency transformer secondary coil and rectification circuit.
The above-mentioned rectification circuit that is connected to the high frequency transformer secondary coil can be full bridge rectifier, full-wave rectifying circuit or current-doubling rectifier.For the multi-form rectification circuit of secondary, utilize inductance energy stored in a switch periods of this access, can realize the Zero-voltage soft switch of switching tube.
Two forward DC-the DC converter of soft switch in three electrical levels of the present invention, simple in structure, its all device for power switching all are operated in soft on off state, thereby reduced switching loss, can improve circuit efficiency, help improving operating frequency, and then improve power density.The circuit of this converter does not have bridge arm direct pass danger, and the reliability height need not the input capacitance Pressure and Control, can be used for that the prime rectifying device is that three-phase is not controlled rectification or three-phase power factor correcting circuit in the distributed power source.
Description of drawings
Fig. 1 is existing three-level DC-DC converter;
Fig. 2 is a kind of physical circuit example of the present invention;
Fig. 3 is the another kind of physical circuit example of the present invention;
Fig. 4 is another physical circuit example of the present invention;
Fig. 5 is the control impuls sequential chart of switching device among the present invention.
Embodiment
Two forward DC-the DC converter of soft switch in three electrical levels of the present invention are access inductance L s and constituting between the input of the high frequency transformer Tx secondary coil of the two forward DC-DC converter of existing three level and rectification circuit.It comprises high frequency transformer Tx and is connected to the switching device S1-S4 of two primary coil Np of high frequency transformer Tx, capacitor C s1-Cs4, diode D1-D4, the circuit that is connected on the former limit of high frequency transformer Tx part is identical with the circuit that existing three-level DC-DC converter is connected on the former limit of high frequency transformer Tx part.In the example shown in Figure 2, between the input of the secondary coil Ns of high frequency transformer and the full bridge rectifier that constitutes by diode D5-D8, meet an inductance L s.The low pass filter that the output termination of full bridge rectifier is made up of inductance L f, capacitor C, two termination load R of capacitor C.It can be applicable to high voltage input occasion.Shown in Figure 3, the full-wave rectifying circuit of rectification circuit for constituting by diode D5, D6, high frequency transformer has two secondary winding Ns, respectively is connected in series inductance L s, a Ls ' that size is identical in each secondary coil and the junction of rectifier diode anode.Shown in Figure 4, rectification circuit is for doubly flowing rectification form, meets inductance L s between the input of high frequency transformer secondary coil Ns and the current-doubling rectifier that is made of diode D5, D6.For the multi-form rectification circuit of secondary, utilize the inductance that is connected between high frequency transformer secondary coil and the rectification circuit input end all can realize the soft switch of the former limit of high frequency transformer switching tube.
Below be example with Fig. 2, describe its course of work in detail, the circuit working process of other form rectification circuits is similar, omits at this.
Half period can be divided into 6 stages before the two forward DC-DC converter of soft switch in three electrical levels, and the working condition of back half period and preceding half period are similar.The wherein control timing of S1-S4 such as Fig. 5, establishing input voltage is 2E, and the high frequency transformer no-load voltage ratio is n (Np/Ns), and two primary coil electric currents are respectively ip1, ip2.
Stage 1 (t
0-t
1)
At t
0Constantly, S1, S2 conducting, S3, S4 turn-off.Rectifier diode D5, D8 conducting, the former limit of high frequency transformer provides energy to load.At t
0Constantly turn-off S1, ip1 charges to Cs1, and ip2 gives Cs3, Cs4 discharge.The linear rising because the existence of capacitor C s1, the voltage on the S1 are started from scratch, thereby S1 is that no-voltage is turn-offed.The voltage of S3, S4 begins linear decline from E.
Stages 2 (t
1-t
2)
At t
1Constantly, Cs1 voltage rises to E, and the voltage on S3, the S4 is that Cs3, Cs4 voltage rise to E/2, then the conducting of D1 nature, D6, D7, D5 and D8 conducting.After the D1 conducting, current i p1 is through S2, the former limit of high frequency transformer and D1 circulation.
Stages 3 (t
2-t
3)
At t
2Constantly, turn-off S2, ip1 charges to Cs2, and ip2 gives Cs3, Cs4 discharge simultaneously.Because rectifying tube D5, D6, D7 and D8 are conductings simultaneously, inductance L s and Cs2, Cs3, Cs4 resonance work together during this period.At t
3Constantly, the voltage of Cs2 rises to E, and the voltage of Cs3, Cs4 drops to 0, for the no-voltage of S3, S4 is opened the condition created.
Stages 4 (t
3-t
4)
At t3 constantly, inverse parallel diode current flow in S3, the S4 body to zero, at this moment applies driving pulse to S3, S4 with the voltage clamp of S3, S4, but S3, S4 no-voltage are open-minded.Ip1, ip2 flow through inverse parallel diode in D1, D2 and S3, the S4 body respectively, because the conductings simultaneously of four rectifier diodes of secondary, being added in the resonant inductance both end voltage is E/n, and ip1, ip2 are linear to descend.
Stages 5 (t
4-t
5)
Drop to zero to the t4 moment ip1, ip2, the inverse parallel diode automatically shuts down in D1, D2 and S3, the S4 body.Current i p2 begins positive flow and crosses S3, S4, because this moment, ip2 still was not enough to provide load current, load current still provides the loop by four rectifier diodes.The voltage that is added on the inductance L s is E/n, and current i p2 reverse linear increases.To t
5Constantly, ip2 reaches the value that load current is converted former limit, and D5, D8 turn-off, and D6, D7 flow through whole load currents.
Provide energy from the t6 power supply to load, half cycling in back begins.Working condition is identical with preceding half period.
In sum, the present invention utilizes the energy on the inductance L s that the voltage on the switching tube shunt capacitance is arrived zero clearly, realizes that the no-voltage of switching device is open-minded.Can widen the scope of soft switch by the value that increases Ls.
Claims (2)
1. two forward DC-DC converter of soft switch in three electrical levels, comprise high frequency transformer (Tx) and be connected to the switching device (S1-S4) of two primary coils of high frequency transformer (Tx), electric capacity (Cs1-Cs4), diode (D1-D4) and be connected to the two forward converters of composite type that the rectification circuit of high frequency transformer (Tx) secondary coil constitutes is characterized in that inserting inductance (Ls) between the input of high frequency transformer (Tx) secondary coil and rectification circuit.
2. the two forward DC-DC converter of soft switch in three electrical levels according to claim 1 is characterized in that said rectification circuit is full bridge rectifier, full-wave rectifying circuit or current-doubling rectifier.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB031153011A CN1215638C (en) | 2003-01-27 | 2003-01-27 | Dual positive excitated DC-DC power transfer device with soft switch in three electrical levels |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB031153011A CN1215638C (en) | 2003-01-27 | 2003-01-27 | Dual positive excitated DC-DC power transfer device with soft switch in three electrical levels |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1431760A true CN1431760A (en) | 2003-07-23 |
| CN1215638C CN1215638C (en) | 2005-08-17 |
Family
ID=4790622
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB031153011A Expired - Fee Related CN1215638C (en) | 2003-01-27 | 2003-01-27 | Dual positive excitated DC-DC power transfer device with soft switch in three electrical levels |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1215638C (en) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100386959C (en) * | 2004-12-16 | 2008-05-07 | 西安交通大学 | Five-level high-frequency DC. converter |
| CN100440706C (en) * | 2004-06-30 | 2008-12-03 | 通用汽车公司 | DC converter circuit with overshoot protection |
| CN1866713B (en) * | 2006-05-16 | 2010-05-12 | 中国科学院电工研究所 | Three-level zero-voltage switch DC convertor and control method thereof |
| CN101534061B (en) * | 2009-04-09 | 2011-09-07 | 福州大学 | A double-isolation boosting multi-input direct current convertor |
| CN102255549A (en) * | 2011-07-20 | 2011-11-23 | 珠海金电电源工业有限公司 | Switching power supply application circuit |
| CN102055340B (en) * | 2009-11-03 | 2013-03-20 | 络能(上海)电子技术有限公司 | Method for controlling full-bridge direct current-direct current converter |
| CN103151931A (en) * | 2013-01-30 | 2013-06-12 | 西安爱科赛博电气股份有限公司 | No-voltage no-current three-level inverters direct current converter circuit |
| CN104065269A (en) * | 2013-03-20 | 2014-09-24 | 成都世旗电子科技有限公司 | Double forward converter circuit |
| CN106533165A (en) * | 2017-01-06 | 2017-03-22 | 深圳市核达中远通电源技术有限公司 | Voltage-sharing circuit used for converter |
| CN108063562A (en) * | 2016-11-09 | 2018-05-22 | 文科泰克(德国)有限责任公司 | Active three level neutral points clamper conversion module |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100346564C (en) * | 2005-11-01 | 2007-10-31 | 南京航空航天大学 | Zero-voltage switch push-pull ortho-exciting three-level DC inverter main circuit and control method thereof |
| CN1866669B (en) * | 2006-05-16 | 2010-10-27 | 中国科学院电工研究所 | Two-way multi-level soft switch DC/DC for superconducting magnetic energy storage and its current side phase shift control method |
-
2003
- 2003-01-27 CN CNB031153011A patent/CN1215638C/en not_active Expired - Fee Related
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100440706C (en) * | 2004-06-30 | 2008-12-03 | 通用汽车公司 | DC converter circuit with overshoot protection |
| CN100386959C (en) * | 2004-12-16 | 2008-05-07 | 西安交通大学 | Five-level high-frequency DC. converter |
| CN1866713B (en) * | 2006-05-16 | 2010-05-12 | 中国科学院电工研究所 | Three-level zero-voltage switch DC convertor and control method thereof |
| CN101534061B (en) * | 2009-04-09 | 2011-09-07 | 福州大学 | A double-isolation boosting multi-input direct current convertor |
| CN102055340B (en) * | 2009-11-03 | 2013-03-20 | 络能(上海)电子技术有限公司 | Method for controlling full-bridge direct current-direct current converter |
| CN102255549A (en) * | 2011-07-20 | 2011-11-23 | 珠海金电电源工业有限公司 | Switching power supply application circuit |
| CN103151931A (en) * | 2013-01-30 | 2013-06-12 | 西安爱科赛博电气股份有限公司 | No-voltage no-current three-level inverters direct current converter circuit |
| CN104065269A (en) * | 2013-03-20 | 2014-09-24 | 成都世旗电子科技有限公司 | Double forward converter circuit |
| CN108063562A (en) * | 2016-11-09 | 2018-05-22 | 文科泰克(德国)有限责任公司 | Active three level neutral points clamper conversion module |
| CN106533165A (en) * | 2017-01-06 | 2017-03-22 | 深圳市核达中远通电源技术有限公司 | Voltage-sharing circuit used for converter |
| CN106533165B (en) * | 2017-01-06 | 2019-11-08 | 深圳市核达中远通电源技术股份有限公司 | A kind of equalizer circuit for converter |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1215638C (en) | 2005-08-17 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US8295069B2 (en) | Power conversion with added pseudo-phase | |
| CN1242539C (en) | DC/DC converter with LLC serial resonance | |
| CN100571008C (en) | Series resonant dc-dc converter | |
| CN1808832B (en) | Circuit apparatus applicable to middle and high power UPS | |
| EP2677650A1 (en) | Interleaving three-level dc/dc converter and ac/dc converter | |
| CN100379132C (en) | Soft-switch PWM interleaving shunt-wound two-transistor forward power converter | |
| EP1580871A1 (en) | A quasi-active power factor correction circuit for switching power supply | |
| CA2661533A1 (en) | Switch mode power converter having multiple inductor windings equipped with snubber circuits | |
| CN1215638C (en) | Dual positive excitated DC-DC power transfer device with soft switch in three electrical levels | |
| KR102344534B1 (en) | Power converter | |
| CN1197554A (en) | Low-loss power current inverter | |
| CN1866704A (en) | Dual-tube dual-forward-excitation boosting type single-stage power factor correction circuit | |
| CN1286521A (en) | Three-level DC converter of zero-voltage switch with clamping diode | |
| WO2011012689A2 (en) | A high-voltage frequency conversion device | |
| CN1592061A (en) | Push-pull converter and method for power supply device and uninterrupted power supply system | |
| EP1794874A1 (en) | Bipolar power supply with lossless snubber | |
| CN1305210C (en) | DC-DC power transfer device with zero voltage soft switch | |
| CN1455982A (en) | High-efficiency AC-DC converter with power factor corrector | |
| CN1120562C (en) | Minimum voltage type active clamp DC-DC converter | |
| JP7121971B2 (en) | Three-phase AC-DC converter | |
| CN1734904A (en) | Single switch double output booster converter | |
| CN1728517A (en) | Main circuit of interleaving inverse excitation type converter with clamping capacitance | |
| CN1336715A (en) | Mixed bridge-type zero-voltage and zero-current switch three level DC converter | |
| CN1635696A (en) | Minimum voltage active clamping three-phase AC-DC power factor correction converter | |
| CN112821790B (en) | Three-phase converter and control method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| 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: 20050817 Termination date: 20140127 |