CN103151931A - No-voltage no-current three-level inverters direct current converter circuit - Google Patents
No-voltage no-current three-level inverters direct current converter circuit Download PDFInfo
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- CN103151931A CN103151931A CN2013100362830A CN201310036283A CN103151931A CN 103151931 A CN103151931 A CN 103151931A CN 2013100362830 A CN2013100362830 A CN 2013100362830A CN 201310036283 A CN201310036283 A CN 201310036283A CN 103151931 A CN103151931 A CN 103151931A
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Abstract
The invention relates to a no-voltage no-current three-level inverters direct current converter circuit which comprises a converter primary side circuit and a converter assistant side circuit. A collector of a self-turn-off device S1, one end of an input capacitance code interface node1 and a positive pole of a power supply are connected, and the other end of the input capacitance Cin1, an emitter of a self-turn-off device S2, a positive pole of D3 and one end of Cin2 are connected. The other end of the Cin2, an emitter of S4 and a negative pole of the power supply are connected. An emitter of the S1, a collector of the S2 and one end of center back line (CBL) are connected. A collector of a self-turn-off device S3 and a negative pole of the D3 are connected. An emitter of the S3, a positive pole of D4 and one end of a transformer primary side winding transient receptor potential (Trp). A collector of the S4 and a negative pole of the D4 are connected. The other end of the Trp is connected with the other end of a capacitance CBL. A diode D1 and a capacitance C1 are connected in parallel between the collector and the emitter of the S1. A diode D2 and a capacitance C2 are connected in parallel between the collector and the emitter of the S2. The technical problem that the existing circuit is complex in structure is solved. The no-voltage no-current three-level inverters direct current converter circuit is simple in structure, and a clamping device is not arranged in the converter primary circuit.
Description
Technical field
The present invention relates to a kind of zero-voltage zero-current three-level DC converter circuit, this circuit can be used for the direct-current switch power supply field.
Background technology
Three Level Technology are hot technologys of power electronic technology.In power electronics is used, be subject to the impact of device voltage quota, the inevitable version that adopts the device series connection in circuit is for the static state, the dynamic voltage balancing problem that solve the device series connection must be added equalizer circuit.The research of three-level DC converter starts from 1992, and the type circuit is widely used in high voltage direct current conversion field, and Chinese patent 200610096757 is one of such technology.
At present, contain the three-level DC converter that single group DC converter contains 4 switching devices and be widely used due to simple in structure, but there are 2 subject matters in such circuit: one, the clamp circuit on former limit cause circuit structure complicated; Its two, the soft switch of lagging leg is realized difficulty.
Summary of the invention
The technical problem that existing three-level DC converter circuit structure is complicated in order to solve, the soft switch of lagging leg is realized difficulty the invention provides a kind of zero-voltage zero-current three-level DC converter circuit.
To achieve these goals, the present invention adopts following technical solution:
Zero-voltage zero-current three-level DC converter circuit comprises transformer primary side circuit and transformer secondary circuit, and described transformer primary side circuit is connected with direct-current input power supplying, and described transformer secondary circuit is connected with dc output end, and its special character is:
Described transformer primary side circuit comprises the first input capacitance C
in1, the second input capacitance C
in2, the first self-turn-off device S
1, the second self-turn-off device S
2, the 3rd self-turn-off device S
3, four selfs turn-off device S
4, the 3rd diode D
3, the 4th diode D
4, capacitance C
BLAnd transformer primary side winding T
rp,
Described the first self-turn-off device S
1Collector electrode, the first input capacitance C
in1An end and the positive pole of direct-current input power supplying be connected in 1 node, described the first input capacitance C
in1The other end, the second self-turn-off device S
2Emitter, the 3rd diode D
3Anode and the second input capacitance C
in2An end be connected in 2 nodes, described the second input capacitance C
in2The other end, four selfs turn-off device S
4Emitter and the negative pole of direct-current input power supplying be connected in 3 nodes, described the first self-turn-off device S
1Emitter, the second self-turn-off device S
2Collector electrode and capacitance C
BLAn end be connected in 4 nodes, described the 3rd self-turn-off device S
3Collector electrode and the 3rd diode D
3Negative electrode be connected in 5 nodes, described the 3rd self-turn-off device S
3Emitter, the 4th diode D
4Anode and transformer primary side winding T
rpAn end be connected in 6 nodes, described four selfs are turn-offed device S
4Collector electrode and the 4th diode D
4Negative electrode be connected in 7 nodes, described transformer primary side winding T
rpThe other end and capacitance C
BLThe other end be connected in 8 nodes,
Described the first self-turn-off device S
1Collector and emitter between be parallel with diode D
1And capacitor C
1, described the second self-turn-off device S
2Collector and emitter between be parallel with diode D
2And capacitor C
2
Above-mentioned transformer secondary circuit comprises the first secondary winding T
rs1, the second secondary winding T
rs2, the first diode D
o1, the first diode D
o2, capacitor C
oAnd outputting inductance L
o
Described the first secondary winding T
rs1One end, the first diode D
o1Anodic bonding in 9 nodes, described the first secondary winding T
rs1One end, the second secondary winding T
rs2An end, capacitor C
oAn end and the negative pole of dc output end be connected in 10 nodes.The second secondary winding T
rs2The other end and the first diode D
o2Anodic bonding in 11 nodes, the first diode D
o1Negative electrode and outputting inductance L
oAn end be connected in 12 nodes, described outputting inductance L
oThe other end, capacitor C
oThe other end and the positive pole of dc output end be connected in 13 nodes.
Above-mentioned transformer secondary circuit comprises secondary winding T
rs, the 5th diode D
o5, the 6th diode D
o6, the 7th diode D
o7, the 8th diode D
o8, output capacitance C
Out1And the first outputting inductance L
o1,
Described secondary winding T
rsAn end, the 5th diode D
o5Anode and the 6th diode D
o6Negative electrode be connected in 14 nodes, described secondary winding T
rsThe other end, the 7th diode D
o7Anode and the 8th diode D
o8Negative electrode be connected in 15 nodes, described the 5th diode D
o5Negative electrode, the 7th diode D
o7Negative electrode and the first outputting inductance L
o1An end be connected in 16 nodes, described the first outputting inductance L
o1The other end and the positive pole of dc output end be connected in 17 nodes, described the 6th diode D
o6Anode, the 8th diode D
o8Anode, output capacitance C
Out1An end and the negative pole of dc output end be connected in 18 nodes.
Advantage that the present invention has:
1, simple in structure, there is no clamps in the transformer primary side circuit;
2, to bear voltage stress low for device, and each switching device bears V
in/ 2 voltage stress is applicable to the high voltage direct current conversion;
3, control simply, adopt ripe phase-shift control mode, have very strong practicality;
4, the S that adopts in circuit of the present invention
1And S
2Be zero voltage switch, S
3And S
4Be Zero Current Switch, power supply conversion efficiency is high.This circuit can be widely used in high pressure DC-DC conversion field.
Description of drawings
Fig. 1 is the first circuit structure diagram of the present invention.
Fig. 2 is the second circuit structure diagram of the present invention.
Fig. 3 is the circuit structure diagram that is applied in the embodiment of three-phase alternating-current supply.
Fig. 4 be in embodiment converter at V
inConducting schematic diagram under/2k pattern.
Fig. 5 is converter conducting schematic diagram under 0 pattern in embodiment.
Fig. 6 is converter conducting schematic diagram under 0 pattern in embodiment.
Fig. 7 be in embodiment converter at-V
inConducting schematic diagram under/2k pattern.
Fig. 8 is transformer primary side output waveform principle schematic in embodiment.
Embodiment
The below describes structure of the present invention and operation principle in detail according to embodiment
4 self-turn-off devices of this circuit (the first self-turn-off device S
1, the second self-turn-off device S
2, the 3rd self-turn-off device S
3, four selfs turn-off device S
4), 1 capacitance C
BL, 2 blocking diodes (the 3rd diode D3, the 4th diode D4), 1 high frequency transformer and output rectification filter unit form.
As shown in Figure 1, the transformer secondary circuit is way of full-wave rectification.The first secondary winding T
rs1An end and D
o1Anode connect and 9; The first secondary winding T
rs1The other end, the second secondary winding T
rs2An end and C
oAn end connect and 10; The second secondary winding T
rs2The other end and D
o2Anode connect and 11; D
o1And D
o2Negative electrode and L
oAn end be connected in 12; L
oThe other end and capacitor C
oThe other end be connected in 13.
As shown in Figure 2, the transformer secondary circuit is the full-bridge rectification mode.T
rsOne end of secondary winding, D
o6Negative electrode and D
o5Anode connect and 14; T
rs1The other end of secondary winding, D
o7Anode and D
o8Negative electrode connect and 15; D
o5And D
o7Negative electrode and L
o1An end be connected in 16; L
o1The other end, C
oAn end be connected in 17; D
o6And D
o8Negative electrode and C
oThe other end be connected in 18.
Embodiment:
This example is to adopt the Switching Power Supply of zero-voltage zero-current three-level DC converter.
Referring to Fig. 3, three-phase alternating-current supply is through diode rectifier circuit D
in1-D
in6Become direct current, DC side is anodal through inductance L
inConnect with 1 end of described circuit; The negative pole of DC side is connected with 3 ends of described circuit.
Through controlling C
BLBoth end voltage can be controlled to be V
in/ 2, its groundwork state is summarized as follows:
Referring to Fig. 4, switch S
1, S
4Conducting, transformer T
rThe voltage that bear at winding two ends, former limit is V
in/ 2; Transformer secondary output V
in/ 2k level.D is passed through in input
o1With output filtering unit powering load.
Referring to Fig. 5, switch S
1Turn-off transformer T
rThe voltage that bear at winding two ends, former limit is 0; Transformer secondary output 0 level, secondary is in the afterflow stage.D
2Conducting, S at this moment
2For no-voltage open-minded.
Referring to Fig. 6, switch S
4Turn-off transformer T
rThe voltage that bear at winding two ends, former limit is 0; Transformer secondary output 0 level, secondary is in the afterflow stage.At this moment, the transformer primary side electric current is reduced to 0, S
4Zero-current switching.
Referring to Fig. 7, switch S
3Conducting, transformer T
rThe voltage that bear at winding two ends, former limit is-V
in/ 2; Transformer secondary output-V
in/ 2k level.C
BLOn energy storage pass through D
o2With output filtering unit powering load.
Referring to Fig. 8, be transformer primary polygonal voltage, current waveform.
Claims (3)
1. zero-voltage zero-current three-level DC converter circuit, comprise transformer primary side circuit and transformer secondary circuit, and described transformer primary side circuit is connected with direct-current input power supplying, and described transformer secondary circuit is connected with dc output end, it is characterized in that:
Described transformer primary side circuit comprises the first input capacitance C
in1, the second input capacitance C
in2, the first self-turn-off device S
1, the second self-turn-off device S
2, the 3rd self-turn-off device S
3, four selfs turn-off device S
4, the 3rd diode D
3, the 4th diode D
4, capacitance C
BLAnd transformer primary side winding T
rp,
Described the first self-turn-off device S
1Collector electrode, the first input capacitance C
in1An end and the positive pole of direct-current input power supplying be connected in 1 node, described the first input capacitance C
in1The other end, the second self-turn-off device S
2Emitter, the 3rd diode D
3Anode and the second input capacitance C
in2An end be connected in 2 nodes, described the second input capacitance C
in2The other end, four selfs turn-off device S
4Emitter and the negative pole of direct-current input power supplying be connected in 3 nodes, described the first self-turn-off device S
1Emitter, the second self-turn-off device S
2Collector electrode and capacitance C
BLAn end be connected in 4 nodes, described the 3rd self-turn-off device S
3Collector electrode and the 3rd diode D
3Negative electrode be connected in 5 nodes, described the 3rd self-turn-off device S
3Emitter, the 4th diode D
4Anode and transformer primary side winding T
rpAn end be connected in 6 nodes, described four selfs are turn-offed device S
4Collector electrode and the 4th diode D
4Negative electrode be connected in 7 nodes, described transformer primary side winding T
rpThe other end and capacitance C
BLThe other end be connected in 8 nodes,
Described the first self-turn-off device S
1Collector and emitter between be parallel with diode D
1And capacitor C
1, described the second self-turn-off device S
2Collector and emitter between be parallel with diode D
2And capacitor C
2
2. zero-voltage zero-current three-level DC converter circuit according to claim 1, it is characterized in that: described transformer secondary circuit comprises the first secondary winding T
rs1, the second secondary winding T
rs2, the first diode D
o1, the first diode D
o2, capacitor C
oAnd outputting inductance L
o
Described the first secondary winding T
rs1One end, the first diode D
o1Anodic bonding in 9 nodes, described the first secondary winding T
rs1One end, the second secondary winding T
rs2An end, capacitor C
oAn end and the negative pole of dc output end be connected in 10 nodes.The second secondary winding T
rs2The other end and the first diode D
o2Anodic bonding in 11 nodes, the first diode D
o1Negative electrode and outputting inductance L
oAn end be connected in 12 nodes, described outputting inductance L
oThe other end, capacitor C
oThe other end and the positive pole of dc output end be connected in 13 nodes.
3. zero-voltage zero-current three-level DC converter circuit according to claim 1, it is characterized in that: described transformer secondary circuit comprises secondary winding T
rs, the 5th diode D
o5, the 6th diode D
o6, the 7th diode D
o7, the 8th diode D
o8, output capacitance C
Out1And the first outputting inductance L
o1,
Described secondary winding T
rsAn end, the 5th diode D
o5Anode and the 6th diode D
o6Negative electrode be connected in 14 nodes, described secondary winding T
rsThe other end, the 7th diode D
o7Anode and the 8th diode D
o8Negative electrode be connected in 15 nodes, described the 5th diode D
o5Negative electrode, the 7th diode D
o7Negative electrode and the first outputting inductance L
o1An end be connected in 16 nodes, described the first outputting inductance L
o1The other end and the positive pole of dc output end be connected in 17 nodes, described the 6th diode D
o6Anode, the 8th diode D
o8Anode, output capacitance C
Out1An end and the negative pole of dc output end be connected in 18 nodes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013100362830A CN103151931A (en) | 2013-01-30 | 2013-01-30 | No-voltage no-current three-level inverters direct current converter circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013100362830A CN103151931A (en) | 2013-01-30 | 2013-01-30 | No-voltage no-current three-level inverters direct current converter circuit |
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| Publication Number | Publication Date |
|---|---|
| CN103151931A true CN103151931A (en) | 2013-06-12 |
Family
ID=48549850
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013100362830A Pending CN103151931A (en) | 2013-01-30 | 2013-01-30 | No-voltage no-current three-level inverters direct current converter circuit |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111884521A (en) * | 2020-08-05 | 2020-11-03 | 中南大学 | Single-stage Boost full-bridge Boost zero-current switch direct-current converter and control method thereof |
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| CN2415540Y (en) * | 2000-01-24 | 2001-01-17 | 南京航空航天大学 | Three-level DC Converter of zero-voltage zero-current switch |
| CN1431760A (en) * | 2003-01-27 | 2003-07-23 | 浙江大学 | Dual positive excitated DC-DC power transfer device with soft switch in three electrical levels |
| JP2005110336A (en) * | 2003-09-26 | 2005-04-21 | Toshiba Mitsubishi-Electric Industrial System Corp | Power conversion apparatus |
| CN1988348A (en) * | 2006-12-08 | 2007-06-27 | 南京航空航天大学 | PWM combined three level DC converter for zero voltage current switch |
| CN101478238A (en) * | 2009-01-12 | 2009-07-08 | 浙江大学 | Three-level parallel resonance dc-dc current transformer |
| CN102684504A (en) * | 2012-05-28 | 2012-09-19 | 西安爱科赛博电气股份有限公司 | Three-level direct current-direct current (dc-dc) converter |
-
2013
- 2013-01-30 CN CN2013100362830A patent/CN103151931A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2415540Y (en) * | 2000-01-24 | 2001-01-17 | 南京航空航天大学 | Three-level DC Converter of zero-voltage zero-current switch |
| CN1431760A (en) * | 2003-01-27 | 2003-07-23 | 浙江大学 | Dual positive excitated DC-DC power transfer device with soft switch in three electrical levels |
| JP2005110336A (en) * | 2003-09-26 | 2005-04-21 | Toshiba Mitsubishi-Electric Industrial System Corp | Power conversion apparatus |
| CN1988348A (en) * | 2006-12-08 | 2007-06-27 | 南京航空航天大学 | PWM combined three level DC converter for zero voltage current switch |
| CN101478238A (en) * | 2009-01-12 | 2009-07-08 | 浙江大学 | Three-level parallel resonance dc-dc current transformer |
| CN102684504A (en) * | 2012-05-28 | 2012-09-19 | 西安爱科赛博电气股份有限公司 | Three-level direct current-direct current (dc-dc) converter |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111884521A (en) * | 2020-08-05 | 2020-11-03 | 中南大学 | Single-stage Boost full-bridge Boost zero-current switch direct-current converter and control method thereof |
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Application publication date: 20130612 |