CN102025281A - Cuk-converter-based high-frequency isolated three-level alternating current (AC)-AC converter - Google Patents
Cuk-converter-based high-frequency isolated three-level alternating current (AC)-AC converter Download PDFInfo
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Abstract
The invention discloses a Cuk-converter-based high-frequency isolated three-level AC-AC converter. In the converter, two coupling capacitors in a non-isolated Cuk three-level topology are both divided into two parts between which a serial isolated transformer is inserted; the middle connecting points of the primary sides of the two transformers are connected with the middle points of two bidirectional power switch tubes on the left side and the middle points of the two bidirectional power switch tubes on the right side respectively; and a power supply end and an output end form a circuit topological structure capable of converting an unstable high-voltage current into a stable or adjustable common-frequency sinusoidal alternating current by combining an input filter and an output filter respectively. In the invention, the power conversion stage number is small, fewer power switch elements are used, a bidirectional power current can be realized, the converter has an electrical isolation property, the spectral characteristic of the front end voltage of the output filter is desirable, the conversion efficiency and power density are improved, a voltage regulation range is wide, voltage boosting and reducing regulation can be realized, and the volume and weight of the output filter can be realized.
Description
Technical field
The invention belongs to the Technics of Power Electronic Conversion technology, particularly a kind of high-frequency isolation formula three-level AC-AC-AC converter based on the Cuk converter.
Background technology
Friendship-friendship (AC-AC) converter technique is the applied power semiconductor device, convert the AC energy of a certain frequency and amplitude a kind of Semiconductor Converting Technology of the AC energy of same or another frequency and amplitude to, be widely used in national defence, industrial and mining enterprises, scientific research institutions, laboratory in colleges and universities and the daily life.
Up to now, the power electronics researcher mainly concentrates on two level A-A transducers such as non-electrical isolation formula, low frequency and high frequency electrical isolation formula for the research of A-A transducer both at home and abroad; Research for multi-level converter, mainly concentrate on many level straight-straight, straight-hand over and friendship-DC converter, research for many level A-A transducer is then considerably less, and only is confined to non-isolated, low frequency or many level of the isolated AC-DC-AC type of intermediate frequency A-A transducer, the non-isolated ac-ac type three-level AC-AC-AC converter of Buck type and the non-isolated ac-ac type three-level AC-AC-AC converter of Zeta type.Though many level of AC-DC-AC type A-A transducer, the non-isolated ac-ac type three-level AC-AC-AC converter of Buck type and each tool advantage of the non-isolated ac-ac type three-level AC-AC-AC converter of Zeta type, there are defectives such as circuit topology complexity, Power Conversion progression is many, the input side power factor is low, conversion efficiency is on the low side, power density is low in the former; Then there are defectives such as topological form is single, no electrical isolation in both.And the present isolated form of studying three level topological structure great majority have just reduced the voltage stress of switching tube, inreal three level of realizing of transformer secondary, can realize that the isolated form bridge-type three level topologys of real three level have used too much power tube, the transformer secondary also need use frequency converter, exists upper and lower bridge arm to lead directly to phenomenon.Nineteen eighty-three, the low ripple of a kind of novelty that SLOBODAN CUK proposes in ieee international conference is straight-and head straight for and close supply convertor (" A New Zero-Ripple Switching DC-to-DCConverter and Integrated Magnetics "), it is simple in structure, switching device is few, have only single-stage power progression, the power factor height can be realized electrical isolation, the voltage ratio that just switching tube bore is higher, can not extensive use and high-voltage great-current occasion.
Summary of the invention
Excessive for solving large power supply power switch pipe voltage stress, the general conversion progression of A-A transducer is many, circuit is complicated and do not have a shortcoming of electrical isolation function, the invention provides a kind of high-frequency isolation formula three-level AC-AC-AC converter based on the Cuk converter, it has, and the terminal voltage spectral characteristic is good before the single-stage power conversion, bidirectional power flow, output filter, liftable is pressed conversion, reduce the voltage stress of switching device, effectively realize advantage such as electrical isolation.
The technical solution that realizes the object of the invention is: a kind of high-frequency isolation formula three-level AC-AC-AC converter based on the Cuk converter comprises that input ac power, input filter, the rheology of isolated Cuk three-level AC change unit, output filter, output AC load; Described input filter comprises input filter inductance, input filter capacitor, the input filter inductance is connected with input filter capacitor, the two joint lead-out wire is first output of input filter, the reference of another termination input ac power of input filter inductance is anodal, the reference negative pole of another termination input ac power of input filter capacitor, the reference minus earth of input ac power, input filter capacitor is second output of input filter with the port that input ac power links to each other with reference to negative pole; The rheology of isolated Cuk three-level AC is changed the unit and is comprised input energy storage inductor, the first two-way power switch pipe, the second two-way power switch pipe, the 3rd two-way power switch pipe, the 4th two-way power switch pipe, first coupling capacitance, second coupling capacitance, the 3rd coupling capacitance, the 4th coupling capacitance, first isolating transformer, second isolating transformer; First output of one termination input filter of input energy storage inductor, the input of another termination first two-way power switch pipe of input energy storage inductor and an end of first coupling capacitance, the former limit input of another termination first isolating transformer of first coupling capacitance, the former limit output termination first two-way power switch pipe output of first isolating transformer, and the input and the former limit of second isolating transformer input of the termination second two-way power switch pipe are drawn in both wiring, one end of the former limit output of second isolating transformer termination second coupling capacitance, the output of another termination second two-way power switch pipe of second coupling capacitance, and both joint lead-out wires connect second output of input filter; One end of secondary input termination the 3rd coupling capacitance of first isolating transformer, the input of another termination the 3rd two-way power switch pipe of the 3rd coupling capacitance, and termination output energy storage inductor one end is drawn in both wiring, and the other end of output energy storage inductor is first output that the unit is changed in the rheology of isolated Cuk three-level AC; The secondary output of output termination first isolating transformer of the 3rd two-way power switch pipe, and termination second isolating transformer secondary input and the 4th two-way power switch pipe input are drawn in both wiring; One end of second isolating transformer secondary output termination the 4th coupling capacitance, the output of another termination the 4th two-way power switch pipe of the 4th coupling capacitance, both wiring exits are second output that the unit is changed in the rheology of isolated Cuk three-level AC; Output filter comprises output filter capacitor, and the two ends of this electric capacity connect first output and second output that the unit is changed in the rheology of isolated Cuk three-level AC respectively; Output filter capacitor and output AC load are parallel with one another, and first output head grounding of unit is changed in the rheology of isolated Cuk three-level AC.
The present invention compared with prior art, its remarkable advantage: 1) unsettled High Level AC Voltage can be transformed into stable or adjustable sinusoidal ac, realized novel electric power electric transformer, the many level key application technical foundation in AC chopper, require the high-voltage large-capacity ac-ac conversion occasion of electrical isolation in AC voltage-stabilizing and civilian, industrial, national defence that exchanges continuous voltage regulating etc., be with a wide range of applications.Advantages such as it is few 2) to have Power Conversion progression, and the terminal voltage spectral characteristic is good before the bidirectional power flow, output filter, thereby improve conversion efficiency and power density, reduce volume and weight, range of regulation is wide, can realize the buck adjusting.3) take the first power switch tube S 1a, the 3rd power switch tube S 2a staggered 180 ° of conductings in the input ac power positive half period, the control strategy of the second power switch tube S 1b, the 4th power switch tube S 2b staggered 180 ° of conductings in the input ac power negative half-cycle, when many level MODAL TRANSFORMATION OF A, have only a power switch pipe to change state, switching loss is little, has improved the reliability of converter.
Below in conjunction with accompanying drawing the present invention is described in further detail.
Description of drawings
Accompanying drawing is the circuit topological structure figure of a kind of high-frequency isolation formula three-level AC-AC-AC converter based on the Cuk converter of the present invention.
Embodiment
In conjunction with the accompanying drawings, the circuit of a kind of high-frequency isolation formula three-level AC-AC-AC converter based on the Cuk converter of the present invention comprises that input ac power 1, input filter 2, the rheology of isolated Cuk three-level AC change unit 3, output filter 4, output AC load 5; This converter duty ratio was alternately exported two kinds of level greater than 0.5 o'clock, and duty ratio was alternately exported other two kinds of level less than 0.5 o'clock, and two level being exported obtain stable or adjustable sinusoidal voltage Uo after output filter filtering;
Described input filter 2 comprises input filter inductance Li, input filter capacitor Ci, input filter inductance Li is connected with input filter capacitor Ci, the two joint lead-out wire is the first output x of input filter 2, the reference of another termination input ac power 1 of input filter inductance Li is anodal, the reference negative pole of another termination input ac power 1 of input filter capacitor Ci, the reference minus earth of input ac power 1, input filter capacitor Ci is the second output y of input filter 2 with the port that input ac power 1 links to each other with reference to negative pole;
The rheology of isolated Cuk three-level AC is changed unit 3 and is comprised input energy storage inductor L1, the first two-way power switch pipe S1, the second two-way power switch pipe S2, the 3rd two-way power switch pipe S3, the 4th two-way power switch pipe S4, the first coupling capacitance C1, the second coupling capacitance C2, the 3rd coupling capacitance C3, the 4th coupling capacitance C4, the first isolating transformer T1, the second isolating transformer T2; The first output x of the termination input filter 2 of input energy storage inductor L1, the input a of another termination first two-way power switch pipe S1 of input energy storage inductor L1 and the end of the first coupling capacitance C1, the former limit input i of another termination first isolating transformer T1 of the first coupling capacitance C1, the former limit output j of the first isolating transformer T1 meets the first two-way power switch pipe S1 output b, and input c and the second isolating transformer T2 former limit input m of the termination second two-way power switch pipe S2 are drawn in both wiring, the second isolating transformer T2 former limit output n connects the end of the second coupling capacitance C2, the output d of another termination second two-way power switch pipe S2 of the second coupling capacitance C2, and both joint lead-out wires meet the second output y of input filter 2; The secondary input k of the first isolating transformer T1 connects the end of the 3rd coupling capacitance C3, the input e of another termination the 3rd two-way power switch pipe S3 of the 3rd coupling capacitance C3, and termination output energy storage inductor L2 one end is drawn in both wiring, and the other end of output energy storage inductor L2 is the first output u that unit 3 is changed in the rheology of isolated Cuk three-level AC; The Ausgang of the 3rd two-way power switch pipe S3 meets the secondary output s of the first isolating transformer T1, and termination second isolating transformer T2 secondary input p and the 4th two-way power switch pipe S4 input g are drawn in both wiring; The second isolating transformer T2 secondary output q connects the end of the 4th coupling capacitance C4, the output h of another termination the 4th two-way power switch pipe S4 of the 4th coupling capacitance C4, both wiring exits are the second output r that unit 3 is changed in the rheology of isolated Cuk three-level AC;
The above-mentioned first two-way power switch pipe S1, the second two-way power switch pipe S2, the 3rd two-way power switch pipe S3, the 4th two-way power switch pipe S4 have the two-way blocking-up function, and the first two-way power switch pipe S1 comprises the first power switch tube S 1a, the second power switch tube S 1b, the first diode p1, the second diode p2; The source electrode of the first power switch tube S 1a connects the drain electrode of the second power switch tube S 1b, the source electrode of the first power switch tube S 1a also connects the anode of the first diode p1, the drain electrode of the first power switch tube S 1a connects the first diode p1 negative electrode, the source electrode of the second power switch tube S 1b connects the anode of the second diode p2, the drain electrode of the second power switch tube S 1b connects the negative electrode of the second diode p2, the drain electrode of power switch tube S 1a is the input a of the first two-way power switch pipe S1, and the source electrode of power switch tube S 1b is the output b of the first two-way power switch pipe S1;
The second two-way power switch pipe S2 comprises the 3rd power switch tube S 2a, the 4th power switch tube S 2b, the 3rd diode p3, the 4th diode p4, the source electrode of the 3rd power switch tube S 2a connects the drain electrode of the 4th power switch tube S 2b, the source electrode of the 3rd power switch tube S 2a also connects the anode of the 3rd diode p3, the drain electrode of the 3rd power switch tube S 2a connects the negative electrode of the 3rd diode p3, the source electrode of the 4th power switch tube S 2b connects the 4th diode p4 negative electrode, the drain electrode of the 4th power switch tube S 2b connects the 4th diode p4 anode, the drain electrode of the 3rd power switch tube S 2a is the input c of the second two-way power switch pipe S2, and the source electrode of the 4th power switch tube S 2b is the output d of the second two-way power switch pipe S2;
The 3rd two-way power switch pipe S3 comprises the 5th power switch tube S 3a, the 6th power switch tube S 3b, the 5th diode p5, the 6th diode p6, the source electrode of the 5th power switch tube S 3a connects the drain electrode of the 6th power switch tube S 3b, the source electrode of the 5th power switch tube S 3a also connects the anode of the 5th diode p5, the drain electrode of the 5th power switch tube S 3a connects the negative electrode of the 5th diode p5, the source electrode of the 6th power switch tube S 3b connects the 6th diode p6 negative electrode, the drain electrode of the 6th power switch tube S 3b connects the 6th diode p6 anode, the drain electrode of the 5th power switch tube S 3a is the input e of the 3rd two-way power switch pipe S3, and the source electrode of the 6th power switch tube S 3b is the Ausgang of the 3rd two-way power switch pipe S3;
The 4th two-way power switch pipe S4 comprises the 7th power switch tube S 4a, the 8th power switch tube S 4b, the 7th diode p7, the 8th diode p8, the source electrode of the 7th power switch tube S 4a connects the drain electrode of the 8th power switch tube S 4b, the source electrode of the 7th power switch tube S 4a also connects the anode of the 7th diode p7, the drain electrode of the 7th power switch tube S 4a connects the negative electrode of the 7th diode p7, the source electrode of the 8th power switch tube S 4b connects the 8th diode p8 negative electrode, the drain electrode of the 8th power switch tube S 4b connects the 8th diode p8 anode, the drain electrode of the 7th power switch tube S 4a is the input g of the 4th two-way power switch pipe S4, and the source electrode of the 8th power switch tube S 4b is the output h of the 4th two-way power switch pipe S4.
The present invention is based in the high-frequency isolation formula three-level AC-AC-AC converter of Cuk converter the first two-way power switch pipe S1 and second two-way power switch pipe S2 series connection forms input ac power and gives input energy storage inductor L1 charging paths, also form simultaneously the first coupling capacitance C1, the second coupling capacitance C2 gives the first isolating transformer T1, the former edge discharge branch road of the second isolating transformer T2, the 3rd two-way power switch pipe S3 and the 4th two-way power switch pipe S4 series connection form the first isolating transformer T1, the second isolating transformer T2 secondary is given the 3rd coupling capacitance C3, the charging paths of the 4th coupling capacitance C4, also formed simultaneously output energy storage inductor L2 and given output AC load afterflow branch road, and above-mentioned branch road can both realize exchanging the positive-negative half-cycle conversion.The first power switch tube S 1a and the 3rd power switch tube S 2a alternately open shutoff for mutual wrong 180 ° at the input ac power positive half period, and the second power switch tube S 1b and the 4th power switch tube S 2b alternately open shutoff for mutual wrong 180 ° at the input ac power negative half-cycle.
When the duty ratio D of power switch pipe less than 0.5 the time, as follows based on the course of work of high-frequency isolation formula three-level AC-AC-AC converter switch periods in input power supply positive half period of Cuk converter:
1) generation of first level, the first power switch tube S 1a closure, the second power switch tube S 1b closure, the 3rd power switch tube S 2a disconnects, the 4th power switch tube S 2b closure, the 5th power switch tube S 3a disconnects, the 6th power switch tube S 3b closure, the 7th power switch tube S 4a closure, the 8th power switch tube S 4b closure, the loop is arranged this moment: the input ac power Ui-input filter inductance Li-input energy storage inductor L1-first two-way power switch pipe S1-second isolating transformer T2 former limit-second coupling capacitance C2, the energy of second isolating transformer T2 secondary induction forms charge circuit by the 4th two-way power switch pipe S4 to the 4th coupling capacitance C4; The first coupling capacitance C1 forms discharge loop by the first two-way power switch pipe S1 and the former limit of the first isolating transformer T1, and the energy of first isolating transformer T1 secondary induction passes through the loop: first isolating transformer T1 secondary-Di, three coupling capacitance C3-output energy storage inductor L2-output AC load Z
L-Di four two-way power switch pipe S4 discharge to output loading.
2) generation of second level, the first power switch tube S 1a disconnects, the second power switch tube S 1b closure, the 3rd power switch tube S 2a disconnects, the 4th power switch tube S 2b closure, the 5th power switch tube S 3a closure, the 6th power switch tube S 3b closure, the 7th power switch tube S 4a closure, the 8th power switch tube S 4b closure, the loop is arranged: the input ac power Ui-input filter inductance Li-input energy storage inductor L1-second coupling capacitance C2-first isolating transformer T1 former limit-second isolating transformer T2 former limit-second coupling capacitance C2 this moment, input energy storage inductor L1 discharge, the first isolating transformer T1, the energy of second isolating transformer T2 secondary induction forms the loop by the 3rd coupling capacitance C3-the 3rd two-way power switch pipe S3-the 4th two-way power switch pipe S4-the 4th coupling capacitance C4 and to the 3rd coupling capacitance C3 and the 4th coupling capacitance C4 charging, the loop is also passed through in output AC load simultaneously: output AC load-output energy storage inductor L2-the 3rd two-way power switch pipe 3-the 4th two-way power switch pipe S4 afterflow;
3) the another kind of switch mode of first level, the first power switch tube S 1a disconnects, the second power switch tube S 1b closure, the 3rd power switch tube S 2a closure, the 4th power switch tube S 2b closure, the 5th power switch tube S 3a closure, the 6th power switch tube S 3b closure, the 7th power switch tube S 4a disconnects, the 8th power switch tube S 4b closure, the loop is arranged this moment: the input ac power Ui-input filter inductance Li-input energy storage inductor L1-first coupling capacitance C1-first isolating transformer T1 former limit-second two-way power switch pipe S2, the energy of first isolating transformer T1 secondary induction forms charge circuit by the 3rd two-way power switch pipe S3 to the 3rd coupling capacitance C3; The second coupling capacitance C2 forms discharge loop by the former limit of the second two-way power switch pipe S2, the second isolating transformer T2, and the energy of second isolating transformer T2 secondary induction is by loop second isolating transformer T2 secondary-Di, four coupling capacitance C4-output AC load Z
L-output energy storage inductor L2-the 3rd two-way power switch pipe S3 is to the output AC load discharge;
4) generation of second level, the switch mode (2) in this switch mode and this cycle is identical.
The course of work of a switch periods is similarly in the input ac power negative half-cycle:
A) generation of first level, the first power switch tube S 1a closure, the second power switch tube S 1b closure, the 3rd power switch tube S 2a closure, the 4th power switch tube S 2b disconnect, the 5th power switch tube S 3a closure, the 6th power switch tube S 3b disconnect the 7th power switch tube S 4a closure, the 8th power switch tube S 4b closure;
B) generation of second level, the first power switch tube S 1a closure, the second power switch tube S 1b disconnect, the 3rd power switch tube S 2a closure, the 4th power switch tube S 2b disconnect, the 5th power switch tube S 3a closure, the 6th S3b closure, the 7th power switch tube S 4a closure, the 8th power switch tube S 4b closure;
C) the another kind of switch mode of first level, the first power switch tube S 1a closure, the second power switch tube S 1b disconnect, the 3rd power switch tube S 2a closure, the 4th power switch tube S 2b closure, the 5th power switch tube S 3a closure, the 6th power switch tube S 3b closure, the 7th power switch tube S 4a closure, the 8th power switch tube S 4b disconnect;
D) generation of second level, the switch mode b in this switch mode and this cycle) identical.
Two level of this translation circuit are output alternately, passes through to change the width of output time between them, thereby reach the purpose of regulating output voltage, and two level of output obtain stable or adjustable same frequency sinusoidal voltage Uo after output filter filtering.
Claims (2)
1. high-frequency isolation formula three-level AC-AC-AC converter based on the Cuk converter, it is characterized in that, comprise that input ac power [1], input filter [2], the rheology of isolated Cuk three-level AC change unit [3], output filter [4], output AC load [5]; Described input filter [2] comprises input filter inductance [Li], input filter capacitor [Ci], input filter inductance [Li] is connected with input filter capacitor [Ci], the two joint lead-out wire is first output [x] of input filter [2], the reference of another termination input ac power [1] of input filter inductance [Li] is anodal, the reference negative pole of another termination input ac power [1] of input filter capacitor [Ci], the reference minus earth of input ac power [1], input filter capacitor [Ci] is second output [y] of input filter [2] with the port that input ac power [1] links to each other with reference to negative pole;
The rheology of isolated Cuk three-level AC is changed unit [3] and is comprised input energy storage inductor [Ll], the first two-way power switch pipe [Sl], the second two-way power switch pipe [S2], the 3rd two-way power switch pipe [S3], the 4th two-way power switch pipe [S4], first coupling capacitance [C1], second coupling capacitance [C2], the 3rd coupling capacitance [C3], the 4th coupling capacitance [C4], first isolating transformer [T1], second isolating transformer [T2]; First output [x] of one termination input filter [2] of input energy storage inductor [L1], the input [a] of another termination first two-way power switch pipe [S1] of input energy storage inductor [L1] and an end of first coupling capacitance [C1], the former limit input [i] of another termination first isolating transformer [T1] of first coupling capacitance [C1], former limit output [j] of first isolating transformer [T1] connects first two-way power switch pipe [S1] output [b], and the input [c] and second isolating transformer [T2] the former limit input [m] of the termination second two-way power switch pipe [S2] are drawn in both wiring, second isolating transformer [T2] former limit output [n] connects an end of second coupling capacitance [C2], the output [d] of another termination second two-way power switch pipe [S2] of second coupling capacitance [C2], and both joint lead-out wires connect second output [y] of input filter [2]; The secondary input [k] of first isolating transformer [T1] connects an end of the 3rd coupling capacitance [C3], the input [e] of another termination the 3rd two-way power switch pipe [S3] of the 3rd coupling capacitance [C3], and termination output energy storage inductor [L2] end is drawn in both wiring, and the other end of output energy storage inductor [L2] is first output [u] that unit [3] is changed in the rheology of isolated Cuk three-level AC; The output [f] of the 3rd two-way power switch pipe [S3] connects the secondary output [s] of first isolating transformer [T1], and termination second isolating transformer [T2] secondary input [p] and the 4th two-way power switch pipe [S4] input [g] are drawn in both wiring; Second isolating transformer [T2] secondary output [q] connects an end of the 4th coupling capacitance [C4], the output [h] of another termination the 4th two-way power switch pipe [S4] of the 4th coupling capacitance [C4], both wiring exits are second output [r] that unit [3] is changed in the rheology of isolated Cuk three-level AC;
Output filter [4] comprises output filter capacitor [Co], and the two ends of this electric capacity connect first output [u] and second output [r] that unit [3] is changed in the rheology of isolated Cuk three-level AC respectively; Output filter capacitor [Co] is parallel with one another with output AC load [5], and first output [u] ground connection of unit [3] is changed in the rheology of isolated Cuk three-level AC.
2. the high-frequency isolation formula three-level AC-AC-AC converter based on the Cuk converter according to claim 1, it is characterized in that, the first two-way power switch pipe [S1], the second two-way power switch pipe [S2], the 3rd two-way power switch pipe [S3], the 4th two-way power switch pipe [S4] all have the two-way blocking-up function, and the first two-way power switch pipe [S1] comprises first power switch pipe [S1a], second power switch pipe [S1b], first diode [p1], second diode [p2]; The source electrode of first power switch pipe [S1a] connects the drain electrode of second power switch pipe [S1b], the source electrode of first power switch pipe [S1a] also connects the anode of first diode [p1], the drain electrode of first power switch pipe [S1a] connects first diode [p1] negative electrode, the source electrode of second power switch pipe [S1b] connects the anode of second diode [p2], the drain electrode of second power switch pipe [S1b] connects the negative electrode of second diode [p2], the drain electrode of power switch pipe [S1a] is the input [a] of the first two-way power switch pipe [S1], and the source electrode of power switch pipe [S1b] is the output [b] of the first two-way power switch pipe [S1];
The second two-way power switch pipe [S2] comprises the 3rd power switch pipe [S2a], the 4th power switch pipe [S2b], the 3rd diode [p3], the 4th diode [p4], the source electrode of the 3rd power switch pipe [S2a] connects the drain electrode of the 4th power switch pipe [S2b], the source electrode of the 3rd power switch pipe [S2a] also connects the anode of the 3rd diode [p3], the drain electrode of the 3rd power switch pipe [S2a] connects the negative electrode of the 3rd diode [p3], the source electrode of the 4th power switch pipe [S2b] connects the 4th diode [p4] negative electrode, the drain electrode of the 4th power switch pipe [S2b] connects the 4th diode [p4] anode, the drain electrode of the 3rd power switch pipe [S2a] is the input [c] of the second two-way power switch pipe [S2], and the source electrode of the 4th power switch pipe [S2b] is the output [d] of the second two-way power switch pipe [S2];
The 3rd two-way power switch pipe [S3] comprises the 5th power switch pipe [S3a], the 6th power switch pipe [S3b], the 5th diode [p5], the 6th diode [p6], the source electrode of the 5th power switch pipe [S3a] connects the drain electrode of the 6th power switch pipe [S3b], the source electrode of the 5th power switch pipe [S3a] also connects the anode of the 5th diode [p5], the drain electrode of the 5th power switch pipe [S3a] connects the negative electrode of the 5th diode [p5], the source electrode of the 6th power switch pipe [S3b] connects the 6th diode [p6] negative electrode, the drain electrode of the 6th power switch pipe [S3b] connects the 6th diode [p6] anode, the drain electrode of the 5th power switch pipe [S3a] is the input [e] of the 3rd two-way power switch pipe [S3], and the source electrode of the 6th power switch pipe [S3b] is the output [f] of the 3rd two-way power switch pipe [S3];
The 4th two-way power switch pipe [S4] comprises the 7th power switch pipe [S4a], the 8th power switch pipe [S4b], the 7th diode [p7], the 8th diode [p8], the source electrode of the 7th power switch pipe [S4a] connects the drain electrode of the 8th power switch pipe [S4b], the source electrode of the 7th power switch pipe [S4a] also connects the anode of the 7th diode [p7], the drain electrode of the 7th power switch pipe [S4a] connects the negative electrode of the 7th diode [p7], the source electrode of the 8th power switch pipe [S4b] connects the 8th diode [p8] negative electrode, the drain electrode of the 8th power switch pipe [S4b] connects the 8th diode [p8] anode, the drain electrode of the 7th power switch pipe [S4a] is the input [g] of the 4th two-way power switch pipe [S4], and the source electrode of the 8th power switch pipe [S4b] is the output [h] of the 4th two-way power switch pipe [S4].
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103532398A (en) * | 2013-09-12 | 2014-01-22 | 上海查尔斯电子有限公司 | Power electronic transformer |
| CN106849663A (en) * | 2015-12-03 | 2017-06-13 | 中国航空工业集团公司雷华电子技术研究所 | A kind of three level power electronic transformer circuit structures |
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| CN107359803A (en) * | 2017-08-31 | 2017-11-17 | 南京理工大学 | Positive activation type high-frequency isolation three-level inverter |
| CN108631326A (en) * | 2018-04-26 | 2018-10-09 | 南京理工大学 | Idle and harmonic compensation device based on Buck type three-level AC AC-AC converters |
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| CN110022073A (en) * | 2019-05-07 | 2019-07-16 | 成都信息工程大学 | A kind of AC-AC voltage regulator circuit |
| CN110880871A (en) * | 2019-09-12 | 2020-03-13 | 厦门大学 | Staggered parallel LLC resonant converter with enhanced derating fault-tolerant operation capability |
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| CN100490289C (en) * | 2007-01-30 | 2009-05-20 | 南京理工大学 | Non-isolation type AC-AC tri-level converter |
| CN100499343C (en) * | 2007-04-04 | 2009-06-10 | 南京理工大学 | AC-AC three level AC-AC converter based on positive converter |
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2009
- 2009-09-15 CN CN 200910035052 patent/CN102025281B/en not_active Expired - Fee Related
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103532398A (en) * | 2013-09-12 | 2014-01-22 | 上海查尔斯电子有限公司 | Power electronic transformer |
| CN106849663A (en) * | 2015-12-03 | 2017-06-13 | 中国航空工业集团公司雷华电子技术研究所 | A kind of three level power electronic transformer circuit structures |
| CN107171566A (en) * | 2017-06-06 | 2017-09-15 | 绵阳市维博电子有限责任公司 | A kind of transformer coupled isolated amplifier of parallel connection chopping type |
| CN107147303A (en) * | 2017-07-07 | 2017-09-08 | 河北工业大学 | A kind of single-phase X-type misplacement three-level AC stream regulating circuit |
| CN107147303B (en) * | 2017-07-07 | 2023-10-10 | 河北工业大学 | Single-phase X-shaped staggered three-level alternating current voltage regulating circuit |
| CN107359803B (en) * | 2017-08-31 | 2019-09-13 | 南京理工大学 | Positive activation type high-frequency isolation three-level inverter |
| CN107359803A (en) * | 2017-08-31 | 2017-11-17 | 南京理工大学 | Positive activation type high-frequency isolation three-level inverter |
| CN108631326A (en) * | 2018-04-26 | 2018-10-09 | 南京理工大学 | Idle and harmonic compensation device based on Buck type three-level AC AC-AC converters |
| CN109367416A (en) * | 2018-09-28 | 2019-02-22 | 北京新能源汽车股份有限公司 | A kind of Vehicular charger and electric car |
| CN110022073A (en) * | 2019-05-07 | 2019-07-16 | 成都信息工程大学 | A kind of AC-AC voltage regulator circuit |
| CN110022073B (en) * | 2019-05-07 | 2024-01-30 | 成都信息工程大学 | AC-AC voltage regulating circuit |
| CN110880871A (en) * | 2019-09-12 | 2020-03-13 | 厦门大学 | Staggered parallel LLC resonant converter with enhanced derating fault-tolerant operation capability |
| CN110880871B (en) * | 2019-09-12 | 2020-11-27 | 厦门大学 | Staggered parallel LLC resonant converter with enhanced derating fault-tolerant operation capability |
| CN115053440A (en) * | 2019-12-24 | 2022-09-13 | 苏迪普.K.马祖姆德 | Solid state power conversion system |
| WO2021147514A1 (en) * | 2020-01-21 | 2021-07-29 | 全球能源互联网研究院有限公司 | Modular multilevel alternating current-direct current conversion system |
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