CN106469985B - A kind of power inverter - Google Patents
A kind of power inverter Download PDFInfo
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- CN106469985B CN106469985B CN201510520941.2A CN201510520941A CN106469985B CN 106469985 B CN106469985 B CN 106469985B CN 201510520941 A CN201510520941 A CN 201510520941A CN 106469985 B CN106469985 B CN 106469985B
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- 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
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Abstract
The present invention provides a kind of power inverters, including the first copped wave unit, resonant element and the second copped wave unit being sequentially connected, the resonant element includes three groups of resonant inductances, three groups of resonant capacitances and transformer subelement, the transformer subelement includes three the first windings and three the second windings, in which: first windings in series of every group of resonant capacitance and one group of resonant inductance, transformer subelement constitutes a series arm；Three series arm connections triangular in shape that three the first windings of three groups of resonant capacitances and three groups of resonant inductances, transformer subelement are constituted, constitute the first angular branch；In the first angular branch, the wiring node of every two series arm connects the first copped wave unit；Three the second windings of transformer subelement connect the second copped wave unit.Type selecting using power inverter provided by the invention device compared with the prior art is more easy, it is easier to realize.
Description
Technical field
The present invention relates to power electronics field more particularly to a kind of power inverters.
Background technique
Controlled resonant converter constant power converter is widely applied in each field with its efficient feature.Applying
Number for disclose a kind of multiphase humorous in 201010261397.1 Chinese patent " multi-phase resonant converter and the method for controlling it "
Shake converter, which includes that the first copped wave unit, resonant element and the second copped wave unit, specific structure are detailed in Fig. 1
It is shown.Wherein, resonant element includes three groups of resonant inductances, three groups of resonant capacitances and transformer subelement, every group of resonant inductance and
An armature winding, one group of resonant capacitance a branch in series for transformer subelement, three groups of resonant inductances, three groups of resonance
Three branches that three armature windings of capacitor and transformer subelement are constituted are in star-like connection, i.e. Y shape connects, so that flowing through humorous
Vibration inductance, the current ripples of resonant capacitance are larger.Therefore, in order to ensure that controlled resonant converter shown in FIG. 1 works normally, need to select
The biggish resonant inductance of current stress and resonant capacitance, so that the type selecting to device causes difficulty, so that resonance shown in FIG. 1
Converter is more difficult to realize.
Summary of the invention
The present invention provides a kind of power inverter, and the type selecting of device is more easy compared with the prior art, therefore is easier to
It realizes.
The present invention provides a kind of power inverters, including the first copped wave unit, the resonant element and second being sequentially connected
Copped wave unit, the resonant element include three groups of resonant inductances, three groups of resonant capacitances and transformer subelement, transformer
Unit includes three the first windings and three the second windings, in which:
One the first windings in series of every group of resonant capacitance and one group of resonant inductance, the transformer subelement constitutes one
Series arm；Three of three the first windings composition of three groups of resonant capacitances and three groups of resonant inductances, the transformer subelement
Series arm connection triangular in shape constitutes the first angular branch；
In the first angular branch, the wiring node of every two series arm connects the first copped wave unit；
Three the second windings of the transformer subelement connect the second copped wave unit.
The present invention also provides a kind of power inverters, including the first copped wave unit, the resonant element and being sequentially connected
Two copped wave units, the resonant element include three groups of resonant inductances, three groups of resonant capacitances and transformer subelement, the transformer
Subelement includes three the first windings and three the second windings, in which:
One the first windings in series of every group of resonant inductance and the transformer subelement constitutes a series arm；Three groups
Three series arm connections triangular in shape that three the first windings of resonant inductance and the transformer subelement are constituted constitute the
One angular branch；
In the first angular branch, the wiring node of every two series arm connects one end of one group of resonant capacitance；Institute
The other end for stating three groups of resonant capacitances connects the first copped wave unit；
Three the second windings of the transformer subelement connect the second copped wave unit.
The present invention also provides a kind of power inverters, including the first copped wave unit, the resonant element and being sequentially connected
Two copped wave units, the resonant element include three groups of resonant inductances, three groups of resonant capacitances and transformer subelement, the transformer
Subelement includes three the first windings and three the second windings, in which:
One the first windings in series of every group of resonant capacitance and the transformer subelement constitutes a series arm；Three groups
Three series arm connections triangular in shape that three the first windings of resonant capacitance and the transformer subelement are constituted constitute the
One angular branch；
In the first angular branch, the wiring node of every two series arm connects one end of one group of resonant inductance；Institute
The other end for stating three groups of resonant inductances connects the first copped wave unit；
Three the second windings of the transformer subelement connect the second copped wave unit.
The present invention has the beneficial effect that:
In scheme provided in an embodiment of the present invention, in resonant element constitute triangle resonant network, can reduce flow through it is humorous
The current ripples of vibration inductance, resonant capacitance, therefore the lesser resonant inductance of current stress and resonant capacitance can be used, device
Type selecting is more easy, so that power inverter provided in an embodiment of the present invention is more easily implemented compared with the prior art, together
When, device loss is also lower compared with the prior art, so that power converter efficiencies are higher.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of existing controlled resonant converter；
Fig. 2 is one of the structural schematic diagram of power inverter that the embodiment of the present invention 1 provides；
Fig. 3 is the second structural representation for the power inverter that the embodiment of the present invention 1 provides；
Fig. 4 is the detailed construction schematic diagram for the power inverter that the embodiment of the present invention 1 provides；
Fig. 5 is one of the structural schematic diagram of power inverter that the embodiment of the present invention 2 provides；
Fig. 6 is the second structural representation for the power inverter that the embodiment of the present invention 2 provides；
Fig. 7 is the detailed construction schematic diagram for the power inverter that the embodiment of the present invention 2 provides；
Fig. 8 is one of the structural schematic diagram of power inverter that the embodiment of the present invention 3 provides；
Fig. 9 is the second structural representation for the power inverter that the embodiment of the present invention 3 provides；
Figure 10 is the detailed construction schematic diagram for the power inverter that the embodiment of the present invention 3 provides.
Specific embodiment
The embodiment of the invention provides a kind of power inverters, below in conjunction with Figure of description to preferred implementation of the invention
Example is illustrated, it should be understood that preferred embodiments described herein are only used to illustrate and explain the present invention, is not used to limit
The present invention.And in the absence of conflict, the features in the embodiments and the embodiments of the present application can be combined with each other.
Embodiment 1:
The embodiment of the present invention 1 provides a kind of power inverter, and as shown in Figure 2 and Figure 3, which includes sequentially
Connected the first copped wave unit 101, resonant element 100 and the second copped wave unit 102, resonant element 100 include three groups of resonance electricity
Feel Lr1, Lr2, Lr3, three groups of resonant capacitances Cr1, Cr2, Cr3 and transformer subelement T, transformer subelement T includes three the
One winding and three the second windings, in which:
One the first windings in series of every group of resonant capacitance and one group of resonant inductance, transformer subelement T constitutes a string
Join branch；Three groups of resonant capacitances Cr1, Cr2, Cr3 and three groups of resonant inductance Lr1, Lr2, Lr3, three of transformer subelement T
Three series arm connections triangular in shape that one winding is constituted, i.e. △ shape connect, and constitute the first angular branch；
In first angular branch, the wiring node of every two series arm connects the first copped wave unit 101；
Three the second windings of transformer subelement T connect the second copped wave unit 102.
Specifically, the wiring node of every two series arm connects the friendship of the first copped wave unit 101 in the first angular branch
Flow terminals；Three the second windings of transformer subelement T connect the AC terminal of the second copped wave unit 102.
Further, can with as shown in Fig. 2, transformer subelement T three the second winding connections triangular in shape, i.e. △ shape
Connection constitutes the second angular branch；In second angular branch, the wiring node of the second winding of every two connects the second copped wave unit
102。
Or it can also be with as shown in figure 3, the first end of three the second windings of transformer subelement T is connected, transformer be sub
The second end of three the second windings of unit T connects the second copped wave unit 102.That is three the second windings of transformer subelement T
In star-like connection, i.e. Y shape connects.
Wherein, transformer subelement T is specifically as follows a three-phase transformer, or three separated transformers.
In the embodiment of the present invention 1, the first winding is armature winding, and the second winding is secondary windings.
In other embodiments of the invention, the first winding may be secondary windings, and the second winding may be primary
Winding, the present invention are not specifically limited in this embodiment.
The power inverter that the embodiment of the present invention 1 provides, when the direct current terminals of the first copped wave unit 101 become as power
The input terminal of parallel operation, the second copped wave unit 102 output end of the direct current terminals as power inverter when, the first copped wave unit
A 101 substantially inversion units, the second copped wave unit 102 are substantially a rectification unit；Conversely, when the first copped wave unit
101 direct current terminals as the output end of power inverter, the second copped wave unit 102 direct current terminals as power conversion
When the input terminal of device, the first copped wave unit 101 is substantially a rectification unit, and the second copped wave unit 102 is substantially an inversion
Unit.
And for the specific implementation form of the first copped wave unit 101 and the second copped wave unit 102, it can be existing any
A kind of way of realization, present invention comparison are not specifically limited.When the first copped wave unit 101 and the second copped wave unit 102 are three
When phase full-bridge chopper circuit, the power conversion implement body that the embodiment of the present invention 1 provides is as shown in Figure 4.
Above-mentioned three phase full bridge chopper circuit is only an example, is not intended to limit the present invention, 101 He of the first copped wave unit
Second copped wave unit 102 or three-phase tri-level chopper circuit, no longer illustrate herein.
Certainly, the power inverter that the embodiment of the present invention 1 provides can also include input filter unit, output filter unit
Etc. other units, this will not be detailed here.
Below by taking power inverter shown in Fig. 4 as an example, the power inverter principle that the embodiment of the present invention 1 provides is carried out
It further illustrates.
In first copped wave unit 101, including switching tube Q1, Q2, Q3, Q4, Q5, Q6, every two switching tube in series one
A bridge arm, three bridge arm parallel connections that six switching tubes are constituted, the both ends after parallel connection are the direct current wiring of the first copped wave unit 101
End, which is the AC terminal of the first copped wave unit 101.First copped wave unit, 101 input dc power into
Row inversion actions, by DC inverter at a square wave or staircase voltage, the driving signal misphase of three bridge arm switching tubes
120 °, the driving signal of switching tube Q1, Q3, Q5 and switching tube Q2, Q4, Q6 are to fix the complementary signal of 50% duty ratio.
In second copped wave unit 102, including switching tube SR1, SR2, SR3, SR4, SR5, SR6, the series connection of every two switching tube
A bridge arm is constituted, three bridge arm parallel connections that six switching tubes are constituted, the both ends after parallel connection are the straight of the second copped wave unit 102
Terminals are flowed, which is the AC terminal of the second copped wave unit 102.Second copped wave unit 102 carries out whole
Stream exports direct current as backend load power supply.
In resonant element 100, three groups of resonant capacitance Cr1, Cr2, Cr3, three groups of resonant inductances Lr1, Lr2, Lr3 and transformer
Three series arms that three the first windings of subelement T are constituted constitute a triangle resonant network, triangle Resonance Neural Network
Three wiring nodes in network connect one to one to three bridge arm midpoints of the first copped wave unit 101, are attached to first and cut
The AC terminal of wave unit 101；Three the second windings of transformer subelement T constitute a triangle branch, the triangle
Three wiring nodes in shape branch connect one to one to three bridge arm midpoints of the second copped wave unit 102, are attached to
The AC terminal of two copped wave units 102.
In power inverter work, the equivalent tank capacitor of three groups of resonant capacitances and the equivalent tank of three groups of resonant inductances
Inductance constitutes the first native resonant frequency fr, the equivalent tank capacitor of three groups of resonant capacitances and the equivalent tank of three groups of resonant inductances
The equivalent magnetizing inductance of inductance and transformer subelement constitutes the second native resonant frequency fm, fr ﹥ fm.
Due to three groups of resonant inductance Lr1, Lr2, Lr3, three groups of resonant capacitances Cr1, Cr2, Cr3 and change in resonant element 100
Three the first windings of depressor subelement T constitute triangle resonant network, compared to three groups of resonant inductances, three shown in FIG. 1
The scheme of group resonant capacitance star-like connection, the electricity of resonant inductance, resonant capacitance is flowed through using the scheme that the embodiment of the present invention 1 provides
Flow liner wave is smaller, about 0.578 of multiphase controlled resonant converter shown in Fig. 1 times, therefore can use the lesser resonance of current stress
The type selecting of inductance and resonant capacitance, device is more easy, so that the power inverter that the embodiment of the present invention 1 provides is easier to
It realizes.Meanwhile device loss is also lower compared with the prior art, so that power converter efficiencies are higher.
Also, in power inverter work, the equivalent tank capacitor of three groups of resonant capacitances is that two groups of resonant capacitances are in parallel,
The capacitance of i.e. every group resonant capacitance is 0.5 times of the equivalent tank capacitor, and the capacitance of three groups of resonant capacitances is the equivalent tank capacitor
1.5 again.
And when the work of multiphase controlled resonant converter shown in Fig. 1, the equivalent tank capacitor of three groups of resonant capacitances is two groups of resonance electricity
It connects after holding parallel connection with another group of resonant capacitance, i.e., the capacitance of every group resonant capacitance is 1.5 times of the equivalent tank capacitor, and three groups humorous
The capacitance of vibration capacitor is 4.5 times of the equivalent tank capacitor.
Obviously, when requiring power inverter to work, the equivalent tank capacitor of three groups of resonant capacitances is certain certain value, this
The capacity for the resonant capacitance that the power inverter that inventive embodiments 1 provide needs is smaller, is multiphase controlled resonant converter shown in Fig. 1
1/3, therefore equipment volume and cost can be greatly reduced.
Further, on the basis of above-described embodiment 1, power inverter can also there are many deformations, such as following realities
Apply example 2 and embodiment 3.
Embodiment 2:
The embodiment of the present invention 2 provides a kind of power inverter, and as shown in Figure 5, Figure 6, which includes sequentially
Connected the first copped wave unit 201, resonant element 200 and the second copped wave unit 202, resonant element 200 include three groups of resonance electricity
Feel Lr1, Lr2, Lr3, three groups of resonant capacitances Cr1, Cr2, Cr3 and transformer subelement T, transformer subelement T includes three the
One winding and three the second windings, in which:
First windings in series of every group of resonant inductance and transformer subelement T constitute a series arm；Three groups humorous
Three series arm connections triangular in shape that three the first windings of vibration inductance Lr1, Lr2, Lr3 and transformer subelement T are constituted,
I.e. △ shape connects, and constitutes the first angular branch；
In first angular branch, the wiring node of every two series arm connects one end of one group of resonant capacitance；Three groups humorous
The other end of vibration capacitor Cr1, Cr2, Cr3 connect the first copped wave unit 201；
Three the second windings of transformer subelement T connect the second copped wave unit 202.
Specifically, the other end of three groups of resonant capacitances Cr1, Cr2, Cr3 connect the exchange wiring of the first copped wave unit 201
End；Three the second windings of transformer subelement T connect the AC terminal of the second copped wave unit 202.
Further, can with as shown in figure 5, transformer subelement T three the second winding connections triangular in shape, i.e. △ shape
Connection constitutes the second angular branch；In second angular branch, the wiring node of the second winding of every two connects the second copped wave unit
202。
Or it can also be with as shown in fig. 6, the first end of three the second windings of transformer subelement T is connected, transformer be sub
The second end of three the second windings of unit T connects the second copped wave unit 202.That is three the second windings of transformer subelement T
In star-like connection, i.e. Y shape connects.
Wherein, transformer subelement T is specifically as follows a three-phase transformer, or three separated transformers.
In the embodiment of the present invention 2, the first winding is armature winding, and the second winding is secondary windings.
In other embodiments of the invention, the first winding may be secondary windings, and the second winding may be primary
Winding, the present invention are not specifically limited in this embodiment.
The power inverter that the embodiment of the present invention 2 provides, when the direct current terminals of the first copped wave unit 201 become as power
The input terminal of parallel operation, the second copped wave unit 202 output end of the direct current terminals as power inverter when, the first copped wave unit
A 201 substantially inversion units, the second copped wave unit 202 are substantially a rectification unit；Conversely, when the first copped wave unit
201 direct current terminals as the output end of power inverter, the second copped wave unit 202 direct current terminals as power conversion
When the input terminal of device, the first copped wave unit 201 is substantially a rectification unit, and the second copped wave unit 202 is substantially an inversion
Unit.
And for the specific implementation form of the first copped wave unit 201 and the second copped wave unit 202, it can be existing any
A kind of way of realization, present invention comparison are not specifically limited.When the first copped wave unit 201 and the second copped wave unit 202 are three
When phase full-bridge chopper circuit, the power conversion implement body that the embodiment of the present invention 2 provides can be as shown in fig. 7, resonant element 200
In, three series arms that three the first windings of three groups of resonant inductances Lr1, Lr2, Lr3 and transformer subelement T are constituted are constituted
One triangle resonant network, three wiring nodes in triangle resonant network pass through respectively three groups of resonant capacitance Cr1,
Cr2, Cr3 connect one to one to three bridge arm midpoints of the first copped wave unit 201, are attached to the first copped wave unit 201
AC terminal；Three the second windings of transformer subelement T constitute a triangle branch, three in the triangle branch
A wiring node connects one to one to three bridge arm midpoints of the second copped wave unit 202, is attached to the second copped wave unit 202
AC terminal.
Above-mentioned three phase full bridge chopper circuit is only an example, is not intended to limit the present invention, 201 He of the first copped wave unit
Second copped wave unit 202 or three-phase tri-level chopper circuit, no longer illustrate herein.
Certainly, the power inverter that the embodiment of the present invention 2 provides can also include input filter unit, output filter unit
Etc. other units, this will not be detailed here.
Due to three the first windings of three groups of resonant inductances Lr1, Lr2, Lr3 in resonant element 200 and transformer subelement T
Triangle resonant network is constituted, compared to three groups of resonant inductances shown in FIG. 1, the scheme of three groups of resonant capacitance star-like connections,
The current ripples for flowing through resonant inductance using the scheme that the embodiment of the present invention 1 provides are smaller, about multiphase resonant transformation shown in Fig. 1
0.578 times of device, therefore the lesser resonant inductance of current stress can be used, so that the function that the embodiment of the present invention 2 provides
Rate converter is more easily implemented.
Embodiment 3:
The embodiment of the present invention 3 provides a kind of power inverter, and as shown in Figure 8, Figure 9, which includes sequentially
Connected the first copped wave unit 301, resonant element 300 and the second copped wave unit 302, resonant element 300 include three groups of resonance electricity
Feel Lr1, Lr2, Lr3, three groups of resonant capacitances Cr1, Cr2, Cr3 and transformer subelement T, transformer subelement T includes three the
One winding and three the second windings, in which:
First windings in series of every group of resonant capacitance and transformer subelement T constitute a series arm；Three groups humorous
Three series arm connections triangular in shape that three the first windings of vibration capacitor Cr1, Cr2, Cr3 and transformer subelement T are constituted,
I.e. △ shape connects, and constitutes the first angular branch；
In first angular branch, the wiring node of every two series arm connects one end of one group of resonant inductance；Three groups humorous
The other end of vibration inductance Lr1, Lr2, Lr3 connect the first copped wave unit 301；
Three the second windings of transformer subelement T connect the second copped wave unit 302.
Specifically, the other end of three groups of resonant inductances Lr1, Lr2, Lr3 connect the exchange wiring of the first copped wave unit 301
End；Three the second windings of transformer subelement T connect the AC terminal of the second copped wave unit 302.
Further, can with as shown in figure 8, transformer subelement T three the second winding connections triangular in shape, i.e. △ shape
Connection constitutes the second angular branch；In second angular branch, the wiring node of the second winding of every two connects the second copped wave unit
302。
Or it can also be with as shown in figure 9, the first end of three the second windings of transformer subelement T is connected, transformer be sub
The second end of three the second windings of unit T connects the second copped wave unit 302.That is three the second windings of transformer subelement T
In star-like connection, i.e. Y shape connects.
Wherein, transformer subelement T is specifically as follows a three-phase transformer, or three separated transformers.
In the embodiment of the present invention 3, the first winding is armature winding, and the second winding is secondary windings.
In other embodiments of the invention, the first winding may be secondary windings, and the second winding may be primary
Winding, the present invention are not specifically limited in this embodiment.
The power inverter that the embodiment of the present invention 3 provides, when the direct current terminals of the first copped wave unit 301 become as power
The input terminal of parallel operation, the second copped wave unit 302 output end of the direct current terminals as power inverter when, the first copped wave unit
A 301 substantially inversion units, the second copped wave unit 302 are substantially a rectification unit；Conversely, when the first copped wave unit
301 direct current terminals as the output end of power inverter, the second copped wave unit 302 direct current terminals as power conversion
When the input terminal of device, the first copped wave unit 301 is substantially a rectification unit, and the second copped wave unit 302 is substantially an inversion
Unit.
And for the specific implementation form of the first copped wave unit 301 and the second copped wave unit 302, it can be existing any
A kind of way of realization, present invention comparison are not specifically limited.When the first copped wave unit 301 and the second copped wave unit 302 are three
When phase full-bridge chopper circuit, the power conversion implement body that the embodiment of the present invention 3 provides can be as shown in Figure 10, resonant element 300
In, three series arms that three the first windings of three groups of resonant capacitances Cr1, Cr2, Cr3 and transformer subelement T are constituted are constituted
One triangle resonant network, three wiring nodes in triangle resonant network pass through respectively three groups of resonant inductance Lr1,
Lr2, Lr3 connect one to one to three bridge arm midpoints of the first copped wave unit 301, are attached to the first copped wave unit 301
AC terminal；Three the second windings of transformer subelement T constitute a triangle branch, three in the triangle branch
A wiring node connects one to one to three bridge arm midpoints of the second copped wave unit 302, is attached to the second copped wave unit 302
AC terminal.
Above-mentioned three phase full bridge chopper circuit is only an example, is not intended to limit the present invention, 301 He of the first copped wave unit
Second copped wave unit 302 or three-phase tri-level chopper circuit, no longer illustrate herein.
Certainly, the power inverter that the embodiment of the present invention 3 provides can also include input filter unit, output filter unit
Etc. other units, this will not be detailed here.
The power inverter principle that the embodiment of the present invention 3 provides may refer to previous embodiment 1, and this will not be detailed here.
Due to three the first windings of three groups of resonant capacitances Cr1, Cr2, Cr3 in resonant element 300 and transformer subelement T
Triangle resonant network is constituted, compared to three groups of resonant inductances shown in FIG. 1, the scheme of three groups of resonant capacitance star-like connections,
The current ripples for flowing through resonant capacitance using the scheme that the embodiment of the present invention 1 provides are smaller, about multiphase resonant transformation shown in Fig. 1
0.578 times of device, therefore the lesser resonant capacitance of current stress can be used, so that the function that the embodiment of the present invention 3 provides
Rate converter is more easily implemented.
Also, the capacity for the resonant capacitance that the power inverter that the embodiment of the present invention 3 provides needs is smaller, is shown in Fig. 1
The 1/3 of multiphase controlled resonant converter, therefore equipment volume and cost can be greatly reduced.
Obviously, various changes and modifications can be made to the invention without departing from essence of the invention by those skilled in the art
Mind and range.In this way, if these modifications and changes of the present invention belongs to the range of the claims in the present invention and its equivalent technologies
Within, then the present invention is also intended to include these modifications and variations.
Claims (6)
1. a kind of power inverter, including the first copped wave unit, resonant element and the second copped wave unit being sequentially connected, feature
It is, the resonant element includes three groups of resonant inductances, three groups of resonant capacitances and transformer subelement, the transformer subelement
Including three the first windings and three the second windings, in which:
One the first windings in series of every group of resonant inductance and the transformer subelement constitutes a series arm；Three groups of resonance
Three series arm connections triangular in shape that three the first windings of inductance and the transformer subelement are constituted constitute first jiao
Shape branch；
In the first angular branch, the wiring node of every two series arm connects one end of one group of resonant capacitance；Described three
The other end of group resonant capacitance connects the first copped wave unit；
Three the second windings of the transformer subelement connect the second copped wave unit.
2. power inverter as described in claim 1, which is characterized in that three the second windings of the transformer subelement are in
Triangle connection, constitutes the second angular branch；In the second angular branch, the wiring node of the second winding of every two connects institute
State the second copped wave unit；Or
The first end of three the second windings of the transformer subelement is connected, three the second windings of the transformer subelement
Second end connect the second copped wave unit.
3. power inverter as claimed in claim 1 or 2, which is characterized in that
The other end of three groups of resonant capacitances specifically connects the AC terminal of the first copped wave unit；
Three the second windings of the transformer subelement specifically connect the AC terminal of the second copped wave unit.
4. a kind of power inverter, including the first copped wave unit, resonant element and the second copped wave unit being sequentially connected, feature
It is, the resonant element includes three groups of resonant inductances, three groups of resonant capacitances and transformer subelement, the transformer subelement
Including three the first windings and three the second windings, in which:
One the first windings in series of every group of resonant capacitance and the transformer subelement constitutes a series arm；Three groups of resonance
Three series arm connections triangular in shape that three the first windings of capacitor and the transformer subelement are constituted constitute first jiao
Shape branch；
In the first angular branch, the wiring node of every two series arm connects one end of one group of resonant inductance；Described three
The other end of group resonant inductance connects the first copped wave unit；
Three the second windings of the transformer subelement connect the second copped wave unit.
5. power inverter as claimed in claim 4, which is characterized in that three the second windings of the transformer subelement are in
Triangle connection, constitutes the second angular branch；In the second angular branch, the wiring node of the second winding of every two connects institute
State the second copped wave unit；Or
The first end of three the second windings of the transformer subelement is connected, three the second windings of the transformer subelement
Second end connect the second copped wave unit.
6. power inverter as described in claim 4 or 5, which is characterized in that
The other end of three groups of resonant inductances specifically connects the AC terminal of the first copped wave unit；
Three the second windings of the transformer subelement specifically connect the AC terminal of the second copped wave unit.
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| CN110224606A (en) * | 2019-05-09 | 2019-09-10 | 余仕君 | A kind of phase-shift soft switch topology unit and its reversible transducer |
| CN111082665A (en) * | 2019-12-26 | 2020-04-28 | 东南大学 | Bidirectional LLC direct-current transformer submodule based on centralized multiphase transformer |
| CN117083788A (en) * | 2022-01-19 | 2023-11-17 | 华为数字能源技术有限公司 | Power conversion circuit and electronic equipment |
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| JPS6116498A (en) * | 1984-07-03 | 1986-01-24 | Toshiba Corp | X-ray high voltage generating device |
| GB2476278A (en) * | 2009-12-17 | 2011-06-22 | Eltek Valere As | Resonant circuit with transformer having three sets of windings |
| CN101966852B (en) * | 2010-09-10 | 2012-05-30 | 河南辉煌科技股份有限公司 | Speed simulator of train |
| CN103683964A (en) * | 2013-12-20 | 2014-03-26 | 华为技术有限公司 | Resonant bidirectional transducer, uninterruptible power supply device and control method |
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