CN111869088A - Power conversion device suitable for balanced power conversion module - Google Patents
Power conversion device suitable for balanced power conversion module Download PDFInfo
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- CN111869088A CN111869088A CN201880091491.1A CN201880091491A CN111869088A CN 111869088 A CN111869088 A CN 111869088A CN 201880091491 A CN201880091491 A CN 201880091491A CN 111869088 A CN111869088 A CN 111869088A
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- 238000006243 chemical reaction Methods 0.000 title claims abstract description 203
- 239000004065 semiconductor Substances 0.000 claims description 12
- 239000003990 capacitor Substances 0.000 claims description 5
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- 238000010586 diagram Methods 0.000 description 7
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- 238000002474 experimental method Methods 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
- H02M7/42—Conversion of dc power input into ac power output without possibility of reversal
- H02M7/44—Conversion of dc power input into ac power output without possibility of reversal by static converters
- H02M7/48—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M7/53—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
- H02M7/537—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only, e.g. single switched pulse inverters
- H02M7/538—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only, e.g. single switched pulse inverters in a push-pull configuration
- H02M7/5381—Parallel type
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Abstract
In the power conversion apparatus according to an embodiment of the present invention, a first power conversion module and a second power conversion module are connected in parallel, and the first and second power conversion modules respectively include: a first circuit unit having two output terminals; a second circuit unit having two output terminals; a magnetic core forming a magnetic field path; a primary side first coil wound around a primary side of the magnetic core and having two connection terminals; a primary-side second coil wound around a primary side of the magnetic core and having two connection terminals; and a secondary side coil wound on a secondary side of the magnetic core, wherein two output terminals of the first circuit portion of the first power conversion module are connected to two connection terminals of the primary side second coil of the first power conversion module, two output terminals of the second circuit portion of the first power conversion module are connected to two connection terminals of the primary side first coil of the second power conversion module, two output terminals of the first circuit portion of the second power conversion module are connected to two connection terminals of the primary side second coil of the second power conversion module, and two output terminals of the second circuit portion of the second power conversion module are connected to two connection terminals of the primary side first coil of the first power conversion module.
Description
Technical Field
The present invention relates to a power conversion apparatus, and more particularly, to a power conversion apparatus for eliminating imbalance of output power between output terminals of a plurality of power conversion modules connected in parallel.
Background
Power conversion devices are utilized in a variety of devices and apparatuses. With the demand for standardization of power conversion apparatuses, a plurality of module type power conversion apparatuses are being developed which perform conversion of a required amount of power by using a plurality of power conversion modules in parallel, rather than converting all power with one power conversion apparatus.
However, even if a plurality of modules are manufactured and used in the same manner, the characteristics of each module may change little by little according to long-term operation, and some parts may malfunction.
In the module type power conversion apparatus, a plurality of power conversion modules are designed to output the same power, but in the above case, there is a problem that power imbalance occurs between output terminals due to variation in inductance of the plurality of power conversion modules.
When the above power imbalance occurs, a specific module processes more power to adjust power of a corresponding variation, and thus, there is a problem of a bad cycle in which a malfunction or a life span is shortened due to more stress.
In order to solve the above-mentioned problem of power imbalance, a technique has been disclosed which adds a sensor to each module to sense an amount of power or each module shares an amount of power to individually control power conversion of a specific module. Also, a technique is disclosed which provides a balanced connection between two coils on the secondary side of the transformer.
However, in the above-described conventional art, the imbalance of power due to the characteristic difference and variation of the respective module type power conversion modules cannot be fundamentally eliminated.
Disclosure of Invention
Problems to be solved by the invention
The present invention has been made to solve the above-mentioned problems occurring in the prior art, and an object of the present invention is to provide a power conversion apparatus which eliminates imbalance of output power between output terminals of respective power conversion modules by adjusting connection of a plurality of power conversion modules operating in parallel.
Means for solving the problems
In the power conversion apparatus according to an embodiment of the present invention, a first power conversion module and a second power conversion module are connected in parallel, and the first power conversion module and the second power conversion module respectively include: a first circuit unit having two output terminals; a second circuit unit having two output terminals; a magnetic core forming a magnetic field path; a primary side first coil wound around a primary side of the magnetic core and having two connection terminals; a primary-side second coil wound around a primary side of the magnetic core and having two connection terminals; and a secondary side coil wound on a secondary side of the magnetic core, wherein two output terminals of the first circuit portion of the first power conversion module are connected to two connection terminals of the primary side second coil of the first power conversion module, two output terminals of the second circuit portion of the first power conversion module are connected to two connection terminals of the primary side first coil of the second power conversion module, two output terminals of the first circuit portion of the second power conversion module are connected to two connection terminals of the primary side second coil of the second power conversion module, and two output terminals of the second circuit portion of the second power conversion module are connected to two connection terminals of the primary side first coil of the first power conversion module.
In addition, in a power conversion apparatus according to another embodiment of the present invention, a first power conversion module and a second power conversion module are connected in parallel, and each of the first power conversion module and the second power conversion module includes: a first circuit unit having two output terminals; a second circuit unit having two output terminals; a magnetic core forming a magnetic field path; a primary side first coil wound around a primary side of the magnetic core and having two connection terminals; a primary-side second coil wound around a primary side of the magnetic core and having two connection terminals; and a secondary coil wound on a secondary side of the magnetic core, wherein two output terminals of the first circuit portion of the first power conversion module are connected to two connection terminals of the primary first coil of the first power conversion module, two output terminals of the second circuit portion of the first power conversion module are connected to two connection terminals of the primary first coil of the second power conversion module, two output terminals of the first circuit portion of the second power conversion module are connected to two connection terminals of the primary second coil of the first power conversion module, and two output terminals of the second circuit portion of the second power conversion module are connected to two connection terminals of the primary second coil of the second power conversion module.
In the present invention, the first circuit portion and the second circuit portion each include a full-bridge switch circuit or a half-bridge switch circuit including a plurality of semiconductor switches and capacitors.
In the present invention, the semiconductor switch of the first circuit portion and the semiconductor switch of the second circuit portion are turned on or off together.
In the present invention, the secondary side coils of the first power conversion module and the second power conversion module include two connection terminals formed at both end portions of the secondary side coil and one connection terminal formed at a midpoint of the secondary side coil, and the two connection terminals formed at both end portions of the second coil of the first power conversion module and the two connection terminals formed at both end portions of the second coil of the second power conversion module are commonly connected to form a (+) output terminal, and the connection terminal formed at a midpoint of the secondary side coil of the first power conversion module and the connection terminal formed at a midpoint of the secondary side coil of the second power conversion module are commonly connected to form a (-) output terminal.
Effects of the invention
According to the present invention, when a plurality of power conversion modules having the same structure are connected in parallel to form a multi-output terminal, it is possible to eliminate power imbalance in the multi-output terminal.
Drawings
Fig. 1 is a conceptual diagram of a power conversion apparatus to which an equalizing power conversion module is applied according to an embodiment of the present invention.
Fig. 2 is a block diagram of a power conversion apparatus to which an equalizing power conversion module is applied according to an embodiment of the present invention.
Fig. 3 is a block diagram of a power conversion apparatus to which an equalizing power conversion module is applied according to another embodiment of the present invention.
Fig. 4 is a graph showing the result of an experiment performed to eliminate power imbalance between multiple output terminals in the power conversion apparatus according to the present invention.
Detailed Description
Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying exemplary drawings. It should be noted that, when reference numerals are added to the constituent elements of the respective drawings, the same constituent elements are given the same reference numerals as much as possible even though they are shown in different drawings. In the description of the embodiments of the present invention, if it is determined that specific descriptions of related known structures or functions will interfere with the understanding of the embodiments of the present invention, the detailed description thereof will be omitted.
In describing the components of the embodiment of the present invention, terms such as first, second, A, B, (a), (b), and the like may be used. These terms are only used to distinguish one structural element from another structural element, and the terms do not limit the nature, order, or sequence of the structural elements. When it is described that a certain constituent element is "connected", "coupled" or "connected" to another constituent element, the constituent element may be directly connected or coupled to the other constituent element, but it should be understood that other constituent elements may be "connected", "coupled" or "connected" to each other.
Fig. 1 is a conceptual diagram of a power conversion apparatus to which an equalizing power conversion module is applied according to an embodiment of the present invention.
Referring to fig. 1, in a power conversion apparatus (hereinafter, referred to as a power conversion apparatus) 100 to which an equalizing power conversion module is applied according to the present invention, two power conversion modules 110 are connected in parallel. These power conversion modules 110 respectively include: a first circuit part 111, a second circuit part 112, a core 113, a primary side first coil 114 and a primary side second coil 115 of the core 113, and a secondary side coil 116 of the core 113. That is, the two power conversion modules 110 respectively include the same structure. For the same structure, reference numerals thereof are omitted.
The first circuit section 111 is formed with two output terminals, i.e., a first output terminal X1 and a second output terminal X2, and the second circuit section 112 is also formed with two output terminals, i.e., a third output terminal X3 and a fourth output terminal X4.
The first circuit unit 111 and the second circuit unit 112 each include a full-bridge or half-bridge switch circuit including a plurality of semiconductor switches 1111 and 1121 and capacitors 1112 and 1122.
Therefore, in the first circuit unit 111 and the second circuit unit 112, the plurality of semiconductor switches 1111 and 1121 are turned on/off according to a control signal of a switch control unit (not shown), and thus a current is output to an input voltage through two output terminals (X1, X2, X3, and X4). In this embodiment, the semiconductor switch 1111 of the first circuit portion 111 and the semiconductor switch 1121 of the second circuit portion 112 preferably operate together, and thus are turned on and off together.
A core (core)113 has a primary side coil wound on one side and a secondary side coil wound on the other side, and a magnetic field path is provided by a current passing through the primary side coil, and a voltage is induced in the secondary side coil by such a magnetic field.
The primary-side first coil 114 and the primary-side second coil 115 are wound around the primary side of the core 113, respectively. At this time, the primary-side first coil 114 and the primary-side second coil 115 are preferably wound around the primary side at the same number of turns. Two connection terminals, i.e., first and second connection terminals Y1 and Y2, are formed at both ends of the primary-side first coil 114, and two connection terminals, i.e., third and fourth connection terminals Y3 and Y4, are also formed at both ends of the primary-side second coil 115.
The secondary side coil 116 is wound on the secondary side of the core 113. Such a secondary side coil 116 has two connection terminals, i.e., fifth and sixth connection terminals Z1, Z2, formed at both ends thereof. In another embodiment, a seventh connection terminal Z3 may be further preferably formed at an intermediate point of the secondary side coil 116.
The present invention will be described in detail below with reference to the exemplary diagrams of fig. 2 and 3.
Fig. 2 is a block diagram of a power conversion apparatus to which a balanced power conversion module is applied according to an embodiment of the present invention, and fig. 3 is a block diagram of a power conversion apparatus to which a balanced power conversion module is applied according to another embodiment of the present invention.
First, as an embodiment shown in fig. 2, in the power conversion apparatus 100 according to the present invention, a first power conversion module 110a and a second power conversion module 110b are connected in parallel.
The first power conversion module 110a includes: a first circuit portion 111a and a second circuit portion 112a each including a plurality of power semiconductor switches and capacitors; a magnetic core 113a providing a path of a magnetic field generated by a current passing through the wound coil; a primary-side first coil 114a and a primary-side second coil 115a wound around the primary side of the core 113 a; and a secondary coil 116a wound on the secondary side of the core 113 a.
The first circuit portion 111a is formed with a first output terminal X1 and a second output terminal X2, and the second circuit portion 112a is formed with a third output terminal X3 and a fourth output terminal X4. The primary-side first coil 114a has a first connection terminal Y1 and a second connection terminal Y2, and the primary-side second coil 115a has a third connection terminal Y3 and a fourth connection terminal Y4.
The second power conversion module 110b has the same structure as the first power conversion module 110 a. That is, the second power conversion module 110b includes: a first circuit section 111b and a second circuit section 112b each including a plurality of power semiconductor switches and capacitors; a core 113b providing a path for a magnetic field generated by a current passing through the coil; a primary-side first coil 114b and a primary-side second coil 115b wound around the primary side of the core 113 b; and a secondary coil 116b wound on the secondary side of the core 113 b.
The first circuit portion 111b is provided with a first output terminal X1 and a second output terminal X2, and the second circuit portion 112b is provided with a third output terminal X3 and a fourth output terminal X4. The primary-side first coil 114b is provided with a first connection terminal Y1 and a second connection terminal Y2, and the primary-side second coil 115b is provided with a third connection terminal Y3 and a fourth connection terminal Y4.
At this time, the first and second output terminals X1 and X2 of the first circuit section 111a of the first power conversion module 110a are connected to the third and fourth connection terminals Y3 and Y4 of the primary-side second coil 115a of the first power conversion module 110a, and the third and fourth output terminals X3 and X4 of the second circuit section 112a of the first power conversion module 110a are connected to the first and second connection terminals Y1 and Y2 of the primary-side first coil 114b of the second power conversion module 110 b.
The first and second output terminals X1 and X2 of the first circuit unit 111b of the second power conversion module 110b are connected to the third and fourth connection terminals Y3 and Y4 of the primary-side second coil 115b of the second power conversion module 110b, and the third and fourth output terminals X3 and X4 of the second circuit unit 112b of the second power conversion module 110b are connected to the first and second connection terminals Y1 and Y2 of the primary-side first coil 114a of the first power conversion module 110 a.
As described above, by cross-connecting the output terminals of the first and second circuit portions of the first and second power conversion modules 110a and 110b and the connection terminals of the primary-side first and second coils, it is possible to eliminate imbalance in output power between the two power conversion modules 110a and 110b due to a difference in inductance, impedance, or the like of the wound coils between the two magnetic cores 113a and 113b (respectively included in the two power conversion modules 110a and 110 b). This can be achieved by connecting the circuit part and the coil in such a way that two balanced (balanced) power conversion modules are formed.
More specifically, due to a characteristic difference between the first core 113a of the first power conversion module 110a and the second core 113b of the second power conversion module 110b, that is, due to a parameter difference caused by long-term use, an error between wound coils, a difference in inductance or impedance of the wound coils, or the like, currents output from the respective cores 113a, 113b may be different. Due to this difference in current, a power difference occurs at the output terminal, resulting in a power imbalance.
As an example, due to the characteristic difference between the first and second magnetic cores 113a and 113b of the two power conversion modules 110a and 110b, when the inductances of the first and second coils wound around the primary side of the first magnetic core 113a are 50 μ H and the inductances of the first and second coils wound around the primary side of the second magnetic core 113b are 60 μ H, respectively, the currents output from the first and second power conversion modules 110a and 110b have values corresponding to the difference between the two inductances, thereby causing power imbalance.
Preferably, since the inductance of each coil of the two magnetic cores 113a, 113b is the same, the output currents of the two power conversion modules 110a, 110b should be the same. However, as described above, the difference in current is caused due to the characteristic difference between the magnetic cores, and as a result, the power imbalance of the respective output terminals is inevitable.
Therefore, in the present invention, the first and second circuit portions of the first and second power conversion modules 110a and 110b are crossed (cross) with the connection portions of the first and second coils on the primary side, thereby preventing power imbalance. That is, in the above example, the inductance of the primary-side first coil wound around the first core 113a in the first power conversion module 110a is 50 μ H, the inductance of the primary-side second coil wound around the second core 113b is 60 μ H, the inductance of the primary-side second coil wound around the first core 113a in the second power conversion module 110b is 50 μ H, and the inductance of the primary-side first coil wound around the second core 113b is 60 μ H, so that the inductances applied to the first and second power conversion modules 110a and 110b are the sum of 50 μ H and 60 μ H, and thus the currents output from the output terminals are the same.
In another embodiment shown in fig. 3, the first and second output terminals X1 and X2 of the first circuit unit 111a of the first power conversion module 110a are connected to the first and second connection terminals Y1 and Y2 of the primary-side first coil 114a of the first power conversion module 110a, and the third and fourth output terminals X3 and X4 of the second circuit unit 112a of the first power conversion module 110a are electrically connected to the first and second connection terminals Y1 and Y2 of the primary-side first coil 114b of the second power conversion module 110 b.
The first and second output terminals X1 and X2 of the first circuit unit 111b of the second power conversion module 110b are connected to the third and fourth connection terminals Y3 and Y4 of the primary-side second coil 115a of the first power conversion module 110a, and the third and fourth output terminals X3 and X4 of the second circuit unit 112b of the second power conversion module 110b are electrically connected to the third and fourth connection terminals Y3 and Y4 of the primary-side second coil 115b of the second power conversion module 110 b.
As described above, the output terminals of the first and second circuit portions of the first and second power conversion modules 110a and 110b are cross-connected to the connection terminals of the primary-side first and second coils, whereby the power imbalance between the two power conversion modules 110a and 110b can be eliminated by the same principle as that of fig. 2.
In this way, in fig. 3, the first and second circuit portions of the two power conversion modules 110a and 110b are also crossed (cross) with the connection portions of the first and second coils on the primary side, so as to prevent the imbalance of the power. That is, in the above example of fig. 3, the inductances applied to the first and second power conversion modules 110a and 110b are the sum of 50 μ H and 60 μ H, so that the currents output from the output terminals are the same.
On the other hand, in fig. 2 and 3, the two connection terminals Z1 and Z2 formed at both ends of the secondary-side coil 116a of the first power conversion module 110a and the two connection terminals Z1 and Z2 formed at both ends of the secondary-side coil 116b of the second power conversion module 110b adjacent to the first power conversion module 110a are commonly connected to each other to form a (+) output terminal, and the connection terminal Z3 formed at a midpoint of the secondary-side coil 116a of the first power conversion module 110a and the connection terminal Z3 formed at a midpoint of the secondary-side coil 116b of the second power conversion module 110b are commonly connected to each other to form a (-) output terminal.
As described above, in an embodiment according to the present invention, the output terminal of the first circuit part 111a of the first power conversion module 110a is connected to the connection terminal of the primary side second coil 115a of the first power conversion module 110a, the output terminal of the second circuit part 112a of the first power conversion module 110a is connected to the connection terminal of the primary side first coil 114b of the second power conversion module 110b, the output terminal of the first circuit part 111b of the second power conversion module 110b is connected to the connection terminal of the primary side second coil 115b of the second power conversion module 110b, and the output terminal of the second circuit part 112b of the second power conversion module 110b is connected to the connection terminal of the primary side first coil 114a of the first power conversion module 110 a.
In another embodiment of the present invention, the output terminal of the first circuit part 111a of the first power conversion module 110a is connected to the connection terminal of the primary-side first coil 114a of the first power conversion module 110a, the output terminal of the second circuit part 112a of the first power conversion module 110a is connected to the connection terminal of the primary-side first coil 114b of the second power conversion module 110b, the output terminal of the first circuit part 111b of the second power conversion module 110b is connected to the connection terminal of the primary-side second coil 115a of the first power conversion module 110a, and the output terminal of the second circuit part 112b of the second power conversion module 110b is connected to the connection terminal of the primary-side second coil 115b of the second power conversion module 110 b.
As in the above two embodiments, by connecting the first and second circuit portions to the primary-side first and second coils, it is possible to eliminate power imbalance between the two power conversion modules 110a, 110b due to a difference in inductance or impedance of the wound coils between the two magnetic cores 113a, 113b (respectively included in the first and second power conversion modules 110a, 110 b).
Fig. 4 is a graph showing the result of an experiment performed to eliminate power imbalance between multiple output terminals in the power conversion apparatus according to the present invention.
In order to experimentally observe that the power conversion device according to the present invention eliminates the power imbalance, in the power conversion devices of fig. 2 and 3, the inductances of the coils wound around the two magnetic cores are set arbitrarily differently. As a specific example, in the first and second power conversion modules having inductances of 10 μ H, respectively, the deviation of the leakage inductance is arbitrarily changed, wherein the inductance of the first power conversion module is set to 12 μ H of 120% and the inductance of the second power conversion module is set to 8 μ H of 80%. At this time, the output current a is set to 300A.
As a result, as shown in fig. 4 (a), in the first and second power conversion modules according to the present invention, since the inductances of the respective output terminals are balanced, the power B of the respective output terminals of the two power conversion modules is the same, and is 6.15 kw.
To compare the above results, fig. 4 (b) shows the power in the respective output terminals of the two power conversion modules when X1, X2 are connected to Y1, Y2, respectively, and X3, X4 are connected to Y3, Y4, respectively, in fig. 1. Of course, the conditions are the same as in fig. 2 and 3.
As can be seen from fig. 4 (b), in the first and second power conversion modules, the respective output terminals are unbalanced in current due to the imbalance of the inductance, so that the power C of the first power conversion module is 5.1kw, and the power D of the second power conversion module is 7.2kw, thereby causing power imbalance.
As described above, in the present invention, when a plurality of power conversion modules are connected in parallel to constitute a power conversion apparatus, the circuit part of the power conversion module and the coil wound around the magnetic core are connected to each other in such a manner that the circuit part and the coil are at least partially cross-connected to each other with the adjacent power conversion modules, thereby minimizing the characteristic difference of each output terminal and further eliminating the power imbalance among the plurality of output terminals.
In the above, although all the structural elements constituting the embodiments of the present invention are described as being combined into one or being combined to perform the operation, the present invention is not limited to these embodiments. That is, all the components may be selectively combined into one or more components to operate within the object range of the present invention. Furthermore, the terms "including", "constituting" or "having" as described above mean that the structural element is included without being contradicted, and therefore, it is understood that other structural elements may be included without excluding other structural elements. All terms including technical and scientific terms, unless otherwise defined, have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. To a term that has been defined, such as in a commonly used dictionary, should be interpreted as having a meaning consistent with the context of the relevant art and, in the event that the present invention is not explicitly defined, should not be interpreted in an idealized or overly formal sense.
The above description is only an exemplary illustration of the technical idea of the present invention, and a person of ordinary skill in the art to which the present invention pertains may make various modifications and variations within a range not exceeding the essential characteristics of the present invention. Therefore, the embodiments of the present invention disclosed are for illustration and not for limiting the technical idea of the present invention, and the scope of the technical idea of the present invention is not limited by these embodiments. The scope of the invention should be construed by the appended claims, and all technical ideas within the equivalent scope thereof should be construed as being included in the scope of the claims.
Claims (5)
1. A power conversion apparatus adapted to equalize power conversion modules, in which a first power conversion module and a second power conversion module are connected in parallel,
the first power conversion module and the second power conversion module respectively include:
a first circuit unit having two output terminals;
a second circuit unit having two output terminals;
a magnetic core forming a magnetic field path;
a primary side first coil wound around a primary side of the magnetic core and having two connection terminals;
a primary-side second coil wound around a primary side of the magnetic core and having two connection terminals; and
A secondary side coil wound on a secondary side of the magnetic core,
two output terminals of the first circuit part of the first power conversion module are connected to two connection terminals of the primary side second coil of the first power conversion module, two output terminals of the second circuit part of the first power conversion module are connected to two connection terminals of the primary side first coil of the second power conversion module, two output terminals of the first circuit part of the second power conversion module are connected to two connection terminals of the primary side second coil of the second power conversion module, and two output terminals of the second circuit part of the second power conversion module are connected to two connection terminals of the primary side first coil of the first power conversion module.
2. A power conversion apparatus adapted to equalize power conversion modules, in which a first power conversion module and a second power conversion module are connected in parallel,
the first power conversion module and the second power conversion module respectively include:
a first circuit unit having two output terminals;
a second circuit unit having two output terminals;
a magnetic core forming a magnetic field path;
A primary side first coil wound around a primary side of the magnetic core and having two connection terminals;
a primary-side second coil wound around a primary side of the magnetic core and having two connection terminals; and
a secondary side coil wound on a secondary side of the magnetic core,
two output terminals of the first circuit part of the first power conversion module are connected to two connection terminals of the primary side first coil of the first power conversion module, two output terminals of the second circuit part of the first power conversion module are connected to two connection terminals of the primary side first coil of the second power conversion module, two output terminals of the first circuit part of the second power conversion module are connected to two connection terminals of the primary side second coil of the first power conversion module, and two output terminals of the second circuit part of the second power conversion module are connected to two connection terminals of the primary side second coil of the second power conversion module.
3. The power conversion apparatus adapted to equalize the power conversion modules according to claim 1 or 2,
the first circuit unit and the second circuit unit each include a full-bridge switching circuit or a half-bridge switching circuit including a plurality of semiconductor switches and capacitors.
4. The power conversion apparatus adapted to equalize the power conversion modules according to claim 3,
the semiconductor switch of the first circuit portion and the semiconductor switch of the second circuit portion are turned on or off together.
5. The power conversion apparatus adapted to equalize the power conversion modules according to claim 1 or 2,
the secondary side coils of the first and second power conversion modules include two connection terminals formed at both end portions of the secondary side coil and one connection terminal formed at a midpoint of the secondary side coil, and the two connection terminals formed at both end portions of the second coil of the first power conversion module and the two connection terminals formed at both end portions of the second coil of the second power conversion module are commonly connected to form a positive output terminal, and the connection terminal formed at a midpoint of the secondary side coil of the first power conversion module and the connection terminal formed at a midpoint of the secondary side coil of the second power conversion module are commonly connected to form a negative output terminal.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020180031347A KR102067269B1 (en) | 2018-03-19 | 2018-03-19 | Power converting apparatus using balanced power converting module |
| KR10-2018-0031347 | 2018-03-19 | ||
| PCT/KR2018/016427 WO2019182231A1 (en) | 2018-03-19 | 2018-12-21 | Power conversion apparatus with balanced power conversion module |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111869088A true CN111869088A (en) | 2020-10-30 |
| CN111869088B CN111869088B (en) | 2024-04-16 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201880091491.1A Active CN111869088B (en) | 2018-03-19 | 2018-12-21 | Power conversion device suitable for balanced power conversion module |
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| Country | Link |
|---|---|
| KR (1) | KR102067269B1 (en) |
| CN (1) | CN111869088B (en) |
| WO (1) | WO2019182231A1 (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1470098A (en) * | 2000-08-18 | 2004-01-21 | ����Դ��ҵ��˾ | Multiple power converter system using combining transformers |
| JP2009178018A (en) * | 2007-10-29 | 2009-08-06 | Tdk Corp | Switching power supply |
| KR101464478B1 (en) * | 2013-07-15 | 2014-11-24 | 주식회사 동아일렉콤 | Multi input llc resonant type dc-dc converter |
| KR101726421B1 (en) * | 2016-12-05 | 2017-04-14 | 주식회사 동아일렉콤 | Dc-dc converter |
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| US7212419B2 (en) * | 2004-02-24 | 2007-05-01 | Vlt, Inc. | Adaptively configured and autoranging voltage transformation module arrays |
| KR101117959B1 (en) | 2005-08-22 | 2012-03-09 | 엘지이노텍 주식회사 | Invertor circuit using Balance transformer |
| CN101689808B (en) * | 2007-06-28 | 2012-08-15 | 新电元工业株式会社 | Bidirectional DC/DC converter |
| KR200453684Y1 (en) | 2007-12-25 | 2011-05-23 | 다폰 일렉트로닉스 코퍼레이션 | Balance transformer and backlight apparatus |
| US7777570B2 (en) * | 2008-03-12 | 2010-08-17 | Mediatek Inc. | Transformer power combiner having secondary winding conductors magnetically coupled to primary winding conductors and configured in topology including series connection and parallel connection |
| US8270499B2 (en) | 2009-05-15 | 2012-09-18 | Qualcomm, Incorporated | Receiver with balanced I/Q transformer |
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- 2018-03-19 KR KR1020180031347A patent/KR102067269B1/en active IP Right Grant
- 2018-12-21 CN CN201880091491.1A patent/CN111869088B/en active Active
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1470098A (en) * | 2000-08-18 | 2004-01-21 | ����Դ��ҵ��˾ | Multiple power converter system using combining transformers |
| JP2009178018A (en) * | 2007-10-29 | 2009-08-06 | Tdk Corp | Switching power supply |
| KR101464478B1 (en) * | 2013-07-15 | 2014-11-24 | 주식회사 동아일렉콤 | Multi input llc resonant type dc-dc converter |
| KR101726421B1 (en) * | 2016-12-05 | 2017-04-14 | 주식회사 동아일렉콤 | Dc-dc converter |
Also Published As
| Publication number | Publication date |
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| KR102067269B1 (en) | 2020-01-16 |
| WO2019182231A1 (en) | 2019-09-26 |
| KR20190109819A (en) | 2019-09-27 |
| CN111869088B (en) | 2024-04-16 |
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