EP3300527A1 - Power converter module - Google Patents
Power converter moduleInfo
- Publication number
- EP3300527A1 EP3300527A1 EP16756621.5A EP16756621A EP3300527A1 EP 3300527 A1 EP3300527 A1 EP 3300527A1 EP 16756621 A EP16756621 A EP 16756621A EP 3300527 A1 EP3300527 A1 EP 3300527A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- circuit board
- current transformer
- transformer module
- module according
- iron
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/28—Coils; Windings; Conductive connections
- H01F27/2804—Printed windings
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/24—Magnetic cores
- H01F27/245—Magnetic cores made from sheets, e.g. grain-oriented
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/24—Magnetic cores
- H01F27/25—Magnetic cores made from strips or ribbons
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/24—Magnetic cores
- H01F27/26—Fastening parts of the core together; Fastening or mounting the core on casing or support
- H01F27/266—Fastening or mounting the core on casing or support
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F38/00—Adaptations of transformers or inductances for specific applications or functions
- H01F38/20—Instruments transformers
- H01F38/22—Instruments transformers for single phase ac
- H01F38/28—Current transformers
- H01F38/30—Constructions
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/28—Coils; Windings; Conductive connections
- H01F27/2804—Printed windings
- H01F2027/2809—Printed windings on stacked layers
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/28—Coils; Windings; Conductive connections
- H01F27/2804—Printed windings
- H01F2027/2819—Planar transformers with printed windings, e.g. surrounded by two cores and to be mounted on printed circuit
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K2201/00—Indexing scheme relating to printed circuits covered by H05K1/00
- H05K2201/08—Magnetic details
- H05K2201/083—Magnetic materials
Definitions
- the invention relates to a current transformer module comprising a printed circuit board, in which in recesses of the printed circuit board, an iron circuit is integrated.
- a secondary circuit of such a current transformer typically comprises a ring winding, which is also called ring core.
- the primary circuit of the current transformer is a wire which is passed through the ring winding. Due to legal requirements are in the design of the current transformer predetermined clearance and creepage distances to be met, such as between the primary and the secondary side terminal or between the primary-side terminal and the ring winding.
- the ring winding is usually made of enameled wire, which is not considered isolated for legal requirements.
- the wire forming the primary circuit is usually sufficiently insulated. There are certain minimum distances between the stripped, free ends of the primary circuit wire to the ring winding to comply.
- converters consisting of mutually layered sheets with a bobbin.
- the bobbin has the advantage that you can easily and quickly wind it. For the bobbin but you have once again tooling costs. Overall, however, the accuracy and the dynamic range in this converter are worse than the toroidal transformer.
- the object of the present invention is to provide a current transformer module, which eliminates the disadvantages mentioned above in a simple manner.
- a current transformer module comprising a printed circuit board, in which an iron circuit is integrated in recesses of the printed circuit board, wherein a winding forming a secondary circuit of the current transformer module is arranged with turns in or on the printed circuit board.
- the generic term current transformer module is defined in this patent application as a modular current transformer preferably without its own housing, which is integrated with its primary and its secondary circuit in and on the circuit board.
- the invention includes a printed circuit board on and in which the secondary windings are designed as conductor tracks.
- the secondary windings are designed as conductor tracks.
- recesses are provided to accommodate an iron circle can.
- the primary windings can be realized as separate lines or as a conductor track on and in the circuit board layers.
- the iron circuit of sheets in particular U-, E- or L-shaped, or ring band or ferromagnetic half-shells or cut strip core halves is formed.
- Individually stacked U-plates are mutually aligned.
- the structure offers in this way as good as no air gap.
- the ring band offers the advantage that the magnetic flux can be optimally guided.
- the ferromagnetic half-shells have the advantage that the two half-shells allow easy assembly and the properties of the air gap can be controlled via the overlapping surface.
- the cut-strip core halves also allow easy assembly due to their bipartite nature. They merely have to be joined together in such a way that a closed iron circle results.
- the iron circuit is positioned in a recess or a plurality of recesses in the printed circuit board and the secondary circuit-forming windings are performed by the iron circuit.
- the recesses in the circuit board succeeds to fix the iron circle firmly.
- the respective iron circle has two leg elements, which are connected to each other via a connecting portion. To one of the two leg elements, the secondary circuit is wound in and on the circuit board.
- the secondary circuits forming windings are formed on a plurality of printed circuit board layers. To achieve a technologically meaningful number of turns, the turns must be distributed over several layers of a printed circuit board.
- the printed circuit board layers formed with secondary circuits are formed with plated-through holes between the circuit board layers through the entire printed circuit board. This technical solution is particularly cost-effective.
- the formed circle forming turns printed circuit board layers with vias between the layers only in partial areas of the circuit board.
- the plated-through holes are then outside the actual winding surface.
- the plated-through holes are arranged outside the winding surface of the secondary circuit-forming windings. This has the advantage that the winding distances do not have to be increased.
- the current transformer module is designed for motor protection.
- the current transformer module is designed for line protection.
- the current transformer module is formed in a 3-phase manner, consisting of three iron circuits and three secondary circuits, which are electrically connected to one another.
- the current transformer module according to the invention has an iron circle, which can preferably be constructed from U-shaped metal sheets, from laminated core halves, from annular band or from ferromagnetic half shells.
- the iron circle is placed in recesses of a circuit board.
- the recesses in the circuit board are preferably arranged opposite one another.
- the respective embodiment of the iron circuit has two leg elements, which are connected to one another via a connecting section.
- the leg elements of the respective iron circle are positioned in the recesses of the circuit board.
- One at a time Leg member of the iron circuit is a secondary circuit forming winding of the current transformer module formed with a plurality of turns in the circuit board.
- Fig. 1 shows an embodiment of an inventive
- FIG. 2 shows a further exemplary embodiment of a current transformer module according to the invention with sectional band core halves as an iron circle;
- FIG. 3 shows a further embodiment of a current transformer module according to the invention with a ring band as an iron circle;
- FIG. 4 shows a further embodiment of a current transformer module according to the invention with ferromagnetic half-shells as an iron circle;
- Fig. 5 shows the embodiment of Figure 4, wherein the ferromagnetic half shells are made of stacked sheets.
- FIG. 7 shows a coil with plated-through holes between individual layers of a printed circuit board.
- Fig. 1 shows an embodiment of a current transformer module according to the invention.
- the current transformer module according to the invention has an iron circle 1, which is preferably constructed from U-shaped sheets 2.
- the U-shaped sheets 2 have two preferably opposite leg elements 3, 4, which are connected to each other via a connecting portion 5.
- the iron circle 1 is placed in recesses 6 of a printed circuit board 7.
- the recesses 6 in the printed circuit board 7 are preferably arranged opposite one another.
- the leg elements 3, 4 of the U-shaped plates are positioned in the recesses 6 of the circuit board 7, wherein the U-shaped plates 2 are preferably arranged alternately with the open side above or below the circuit board 7.
- the arrow direction shown in Fig. 1 corresponds to the mounting direction.
- a secondary winding 8 forming winding of the current transformer module is formed with a plurality of turns 9 in the circuit board 7.
- the iron core 1 is designed here in the form of cut strip core halves 10.
- the Thomasbandkernhcrun 10 are U-shaped and have two opposing leg members 3, 4 and a connecting portion 5.
- the leg elements 3, 4 of the U-shaped cut strip core halves 10 are positioned in the recesses 6 of the printed circuit board 7, wherein the cut strip core halves 10 together give an iron circle 1.
- a secondary winding 8 forming winding of the current transformer module is formed with a plurality of turns 9 in the circuit board 7.
- Fig. 3 shows another embodiment of a current transformer module according to the invention with a ring band 11 as an iron circle 1.
- the ring band 11 is wound through the recesses 6 of the circuit board 7 and thereby forms a cylinder.
- the leg members 3, 4 and the connecting portion 5 go through this cylindrical training flowing into each other.
- a secondary winding 8 forming winding of the current transformer Module with a plurality of turns 9 in the circuit board
- FIG. 4 shows a further exemplary embodiment of a current transformer module according to the invention with ferromagnetic half shells 12 as an iron circuit 1.
- the ferromagnetic half-shells 12 are U-shaped and have two opposing leg members 3, 4 and a connecting portion 5.
- the leg elements 3, 4 of the U-shaped ferromagnetic half shells 12 are positioned in the recesses 6 of the circuit board 7, wherein the ferromagnetic half shells 12 are arranged opposite to each other, so that both above and below the circuit board 7, a connecting portion 5 of the U-shaped ferromagnetic half shells 12 is arranged.
- Each to a leg member of the iron circle 1 is a secondary circuit
- Fig. 5 shows the embodiment of Fig. 4, wherein the ferromagnetic half-shells 12 are made of stacked sheets.
- FIG. 6 shows a coil 13 with turns 9 and with through contacts 14 through the complete circuit board layers 15.
- the windings 9 must be distributed over several layers of a printed circuit board. These circuit board layers 15 must be connected to each other by means of plated-through holes 14. Since the windings 9 in the individual circuit board layers 15 preferably run alternately from the inside to the outside and then from the outside to the inside, the plated-through holes 14 are located alternately inside and outside. In this case, the inner vias 14 as little as possible board surface take, so preferably run in a line to the front of the sheet iron package.
- FIG. 7 shows a coil 13 with turns 9 and with through contacts 14 between individual layers of a printed circuit board 7. It is preferably provided that the through-contacts 14 lie outside the actual winding surface in order not to increase the winding spacing.
- An optimized solution in terms of installation space exists when plated through-holes 14 with an odd number to an even number are each positioned directly above one another.
- the current transformer module according to the invention is characterized in that the complex separate application of the secondary windings to an iron circuit is eliminated, since the windings are integrated in the printed circuit board. Due to the integration of the secondary windings in the printed circuit board, no connecting leads need to be struck and these do not have to be contacted with the printed circuit board. The integration of the iron circuit in the circuit board results in a much more compact design for the current transformer module according to the invention with a smaller space requirement compared to the embodiments of the prior art. LIST OF REFERENCE NUMBERS
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Transformers For Measuring Instruments (AREA)
- Inverter Devices (AREA)
- Coils Or Transformers For Communication (AREA)
- Power Conversion In General (AREA)
- Coils Of Transformers For General Uses (AREA)
- Measuring Instrument Details And Bridges, And Automatic Balancing Devices (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102015218715.2A DE102015218715A1 (en) | 2015-09-29 | 2015-09-29 | Power converter module |
PCT/EP2016/068847 WO2017054972A1 (en) | 2015-09-29 | 2016-08-08 | Power converter module |
Publications (1)
Publication Number | Publication Date |
---|---|
EP3300527A1 true EP3300527A1 (en) | 2018-04-04 |
Family
ID=56799418
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP16756621.5A Withdrawn EP3300527A1 (en) | 2015-09-29 | 2016-08-08 | Power converter module |
Country Status (7)
Country | Link |
---|---|
US (1) | US20180286564A1 (en) |
EP (1) | EP3300527A1 (en) |
JP (1) | JP6594531B2 (en) |
KR (1) | KR102036130B1 (en) |
CN (1) | CN107924760A (en) |
DE (1) | DE102015218715A1 (en) |
WO (1) | WO2017054972A1 (en) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102016219790A1 (en) * | 2016-10-12 | 2018-04-12 | Siemens Aktiengesellschaft | Method for producing a printed circuit board current transformer |
DE102017214220A1 (en) | 2017-08-15 | 2019-02-21 | Robert Bosch Gmbh | Magnetic core and method of making a magnetic core |
DE102017214219A1 (en) | 2017-08-15 | 2019-02-21 | Robert Bosch Gmbh | Slotted magnetic core and method of making a slotted magnetic core |
FR3086793B1 (en) * | 2018-09-27 | 2020-09-11 | Schneider Electric Ind Sas | ELECTRIC CURRENT TRANSFORMER AND CURRENT MEASURING DEVICE |
Family Cites Families (21)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CH347259A (en) | 1955-12-28 | 1960-06-30 | Bbc Brown Boveri & Cie | Current transformers for high voltage systems |
DE3722124A1 (en) | 1986-08-21 | 1988-02-25 | Siemens Ag | Printed circuit board assembly having a coil or a transformer |
DE3721759A1 (en) | 1987-07-01 | 1989-01-12 | Ceag Licht & Strom | Transformer fitted on a printed circuit board |
JPH01209387A (en) * | 1988-02-17 | 1989-08-23 | Nishimu Denshi Kogyo Kk | Fault current detection sensor and detection of fault section in transmission line using the same |
DE4137776C2 (en) | 1991-11-16 | 1996-11-07 | Vacuumschmelze Gmbh | High-frequency power transformers in multilayer technology |
JPH07283051A (en) * | 1994-04-12 | 1995-10-27 | Matsushita Electric Works Ltd | Current transformer |
JP3344526B2 (en) * | 1995-05-08 | 2002-11-11 | 富士電機株式会社 | Zero-phase current transformer |
EP0955660A1 (en) * | 1998-05-08 | 1999-11-10 | Schurter AG | Electric circuit breaker for apparatus having a current overload and undervoltage function and a current overload sensor therefore |
JP2000012335A (en) * | 1998-06-18 | 2000-01-14 | Tdk Corp | Transformer for communications equipment |
JP2000021661A (en) * | 1998-06-30 | 2000-01-21 | Omron Corp | Ct type current sensor |
JP2001015365A (en) * | 1999-07-02 | 2001-01-19 | Toko Electric Corp | Current transformer |
US6414579B1 (en) * | 1999-12-06 | 2002-07-02 | General Electric Company | Current transformer and method for correcting asymmetries therein |
US6480086B1 (en) * | 1999-12-20 | 2002-11-12 | Advanced Micro Devices, Inc. | Inductor and transformer formed with multi-layer coil turns fabricated on an integrated circuit substrate |
JP2001289884A (en) * | 2000-04-04 | 2001-10-19 | Mitsubishi Electric Corp | Current sensor |
JP2005101244A (en) * | 2003-09-25 | 2005-04-14 | Hitachi Ltd | Printed circuit board type transformer |
JP2005332851A (en) * | 2004-05-18 | 2005-12-02 | Yasuhiko Okubo | Core for hall ct |
JP2006100389A (en) * | 2004-09-28 | 2006-04-13 | Hokuto Denshi Kogyo Kk | Thin coil |
US7432793B2 (en) * | 2005-12-19 | 2008-10-07 | Bose Corporation | Amplifier output filter having planar inductor |
JP2008159618A (en) * | 2006-12-20 | 2008-07-10 | Shinko Electric Ind Co Ltd | Inductor element |
EP2144070B1 (en) * | 2008-07-11 | 2012-03-21 | Liaisons Electroniques-Mecaniques Lem S.A. | Sensor for high voltage environment |
CN201927466U (en) * | 2010-11-30 | 2011-08-10 | 富士康(昆山)电脑接插件有限公司 | Magnetic element |
-
2015
- 2015-09-29 DE DE102015218715.2A patent/DE102015218715A1/en not_active Withdrawn
-
2016
- 2016-08-08 JP JP2018515600A patent/JP6594531B2/en not_active Expired - Fee Related
- 2016-08-08 US US15/764,473 patent/US20180286564A1/en not_active Abandoned
- 2016-08-08 WO PCT/EP2016/068847 patent/WO2017054972A1/en active Application Filing
- 2016-08-08 EP EP16756621.5A patent/EP3300527A1/en not_active Withdrawn
- 2016-08-08 KR KR1020187006033A patent/KR102036130B1/en active IP Right Grant
- 2016-08-08 CN CN201680045051.3A patent/CN107924760A/en active Pending
Also Published As
Publication number | Publication date |
---|---|
KR20180037225A (en) | 2018-04-11 |
WO2017054972A1 (en) | 2017-04-06 |
CN107924760A (en) | 2018-04-17 |
DE102015218715A1 (en) | 2017-03-30 |
JP2018535539A (en) | 2018-11-29 |
JP6594531B2 (en) | 2019-10-23 |
KR102036130B1 (en) | 2019-10-25 |
US20180286564A1 (en) | 2018-10-04 |
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