• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    ROGOWSKI COIL SET. These are Rogowski coil sets (110, 115, 120, 125) and methods (200) for supplying or forming Rogowski coil sets (110, 115, 120, 125) that are provided. A Rogowski coil assembly (110, 115, 120, 125) can include a printed circuit board (105) and a plurality of Rogowski coil sections (130a af) mounted on an external surface of the printed circuit board (105 ) by one or more respective circuit traces (140a af). The circuit traces (140a to f) can retain and connect the plurality of Rogowski coil sections (130a to f).
    公开号:BR102012020701B1
    申请号:R102012020701-0
    申请日:2012-08-17
    公开日:2020-12-29
    发明作者:Didier Gilbert Rouaud；Subramanyam Satyasurya Chamarti
    申请人:Aclara Meters Llc；
    IPC主号:
    专利说明:

    FIELD OF THE INVENTION
    [001] The present invention generally relates to Rogowski coils and, more specifically, to Rogowski coil assemblies in which a plurality of Rogowski coil sections are mounted on a printed circuit board. BACKGROUND OF THE INVENTION
    [002] A wide variety of different types of measuring devices are used to detect or monitor current signals. For example, measuring devices are typically integrated into utility meters in order to monitor the current in one or more phases of an electrical power signal. In conventional devices, current transformers, taps, and Hall effect transducers have traditionally been used to monitor current signals. More recently, Rogowski coils have been used to monitor current signals. With a Rogowski coil, a current that flows through a conductor generates a magnetic field that induces a voltage in the coil. By using the voltage output signal from the coil, the current conditions within the conductor can be calculated.
    [003] Conventional Rogowski coils are typically housed within a plastic cover or plastic modeling. Although the cover serves to hold the coil windings together, the cover increases the size and cost of Rogowski coil sets. For example, Rogowski coil assemblies take up more space within a utility meter. Attempts have been made to reduce the size of Rogowski coil assemblies by integrating or engraving coils on a printed circuit board. For example, patent publication No. US 2008/0079418 by Rea, et al., Entitled “High-Precision Rogowski Current Transformer” and filed on September 29, 2006, describes a Rogowski coil assembly that is integrated into a plate printed circuit board. However, measurement sensitivity is often sacrificed due to an inability to achieve an acceptable number of windings or loops for the recorded Rogowski coils. Consequently, the improved Rogowski coil sets are desirable. DESCRIPTION OF THE INVENTION
    [004] Some or all of the above needs and / or problems can be addressed by certain embodiments of the invention. The embodiments of the invention can include Rogowski coil assemblies and methods for forming them. According to an embodiment of the invention, a Rogowski coil assembly is disclosed. The Rogowski coil assembly may include a printed circuit board and a plurality of sections of Rogowski coil mounted on an external surface of the printed circuit board by one or more respective circuit strokes. The circuit traces can retain and connect the plurality of Rogowski coil sections.
    [005] In accordance with another embodiment of the invention, a method for providing a Rogowski coil assembly is disclosed. A printed circuit board can be provided, and a plurality of Rogowski coil sections can be mounted on an external surface of the printed circuit board by one or more respective circuit strokes. The circuit traces can retain and connect the plurality of Rogowski coil sections.
    [006] Systems, methods, apparatus, functions and additional aspects are realized through the techniques of various embodiments of the invention. Other embodiments of the invention are described in detail in the present invention and are considered a part of the claimed invention. Other achievements, functions and aspects can be understood in relation to the description and drawings. BRIEF DESCRIPTION OF THE DRAWINGS
    [007] Having thus described the invention in common terms, a reference will now be made to the attached drawings, which are not necessarily drawn to scale, and in which: Figure 1 is a block diagram of an example of Rogowski coil sets , according to an illustrative embodiment of the invention; Figure 2 is a flow chart of an exemplary method for providing a Rogowski coil assembly, according to an illustrative embodiment of the invention. DESCRIPTION OF ACCOMPLISHMENTS OF THE INVENTION
    [008] Illustrative embodiments of the invention will now be described more fully hereinafter with respect to the accompanying drawings, in which some, but not all of the embodiments of the invention are shown. In fact, the invention can be incorporated in many different forms and should not be construed as limiting the achievements demonstrated in the present invention; moreover, these achievements are provided in a manner that this disclosure will satisfy applicable legal requirements. Similar numbers refer to similar elements throughout the document.
    [009] Rogowski coil sets and methods of supplying and / or forming them are revealed. In an exemplary embodiment of the invention, a Rogowski coil assembly can include a printed circuit board and a plurality of Rogowski coil sections mounted on an external surface of the printed circuit board by one or more respective circuit strokes. In other words, sections of Rogowski coil that form a Rogowski coil can be welded to the printed circuit board or, otherwise, fixed to the printed circuit board using any number of appropriate circuit strokes. The circuit traces can hold or hold the Rogowski coil sections in place and inhibit the coil sections from unfolding. In addition, circuit traces can connect Rogowski's coil sections together by forming conductive tracks between Rogowski's coil sections. Any number of sections of Rogowski coil can be used as desired in various embodiments of the invention. For example, approximately three to twelve sections of Rogowski coil can be used. In an exemplary embodiment, six sections of Rogowski coil can be used. In other designs, such as designs used in power substations, more than twelve sections of Rogowski coil can be used.
    [010] As desired in certain embodiments, a return current path for the Rogowski coil sections can also be provided. For example, a return current path may be provided by one or more traces of current on the printed circuit board, such as a current trace formed on a surface of the printed circuit board opposite the surface on which the coil sections of Rogowski are mounted (for example, the reverse side of the printed circuit board). As another example, a return current path can be provided by a conductor or wire that passes through one or more of the Rogowski coil sections. For example, a return path conductor can be passed through the center of the plurality of Rogowski coil sections.
    [011] In certain embodiments of the invention, an opening may be provided on the printed circuit board to receive at least one conductor that is monitored by a plurality of Rogowski coil sections. For example, a circular or elliptical opening can be formed through the printed circuit board. As desired, the Rogowski coil sections can be positioned on or around a periphery of the opening. For example, each of the Rogowski coil sections can be positioned at approximately equal distance from the opening and / or from a center of the opening. In this regard, Rogowski coil sections can be used to monitor a current within at least one conductor once at least one conductor is inserted or passed through the opening. Additionally, in certain embodiments, a capacitive shield can be positioned within the gap between at least one conductor and the printed circuit board. In addition, as desired in certain embodiments, a gap or gap may be formed within the printed circuit board to facilitate the positioning of at least one conductor within the opening. For example, a gap or gap may be formed between the opening and an edge of the printed circuit board.
    [012] As desired in certain embodiments of the invention, a measurement processing circuit and / or circuit system thereof may be attached, formed, and / or integrated into the printed circuit board. The measurement processing circuit can include any number of appropriate circuit components configured to receive and process measurement data from Rogowski coil sections. For example, the measurement processing circuit may include appropriate circuit components configured to process a voltage signal received in order to determine and / or calculate a current signal present in at least one conductor monitored by the Rogowski coil sections. In other embodiments, at least one connector can be attached, formed, and / or integrated into the printed circuit board. At least one connector can be configured to provide measurement data collected by a plurality of Rogowski coil sections to an external measurement processing circuit.
    [013] Certain embodiments of the invention described in the present invention can have the technical effect of providing a Rogowski coil assembly used to monitor a current within at least one conductor, such as a phase conductor associated with a utility meter. By mounting a plurality of Rogowski coil sections to an external surface of a printed circuit board, the space taken by the Rogowski coil assembly can be reduced and / or minimized. Additionally, in certain embodiments, the cost of the Rogowski coil set can be reduced by eliminating the need for a housing, such as a plastic housing. In addition, assembled Rogowski coil sections can provide a higher level of measurement accuracy than conventional assemblies in which Rogowski coils are manufactured or engraved on printed circuit boards.
    [014] Figure 1 is a block diagram of a plurality of exemplary Rogowski coil sets, according to an illustrative embodiment of the invention. In Figure 1, four exemplary Rogowski coil sets are illustrated in association with a single printed circuit board 100; however, it will be appreciated that any number of Rogowski coil assemblies can be formed on a printed circuit board. For example, a printed circuit board used in association with a power meter may include a section of Rogowski coil for each phase conductor of the power meter.
    [015] With reference to Figure 1, a set of exemplary printed circuit boards 100 that includes four sets of exemplary Rogowski coil 110, 115, 120, 125 formed on a printed circuit board ("PCB") 105 is illustrated. PCB 105 can be any appropriate plate configured to mechanically support and electrically connect the Rogowski coil sections of any number of Rogowski coil sets, such as sets 110, 115, 120, 125 illustrated in Figure 1. PCB 105 may include a substrate or base formed from any number of dielectric materials, which includes, but is not limited to, polytetrafluoroethylene, FR-4, FR-1, epoxy material-1 (“CEM-1”), CEM -3, other glass fiber fabric materials, and / or other epoxy resin materials. As desired, the base can include a plurality of dielectric layers that are laminated together with one or more suitable epoxy resins and / or pre-impregnated epoxy resin materials. Any number of routes or connections can be provided between layers. The base can also be coated or covered with a welding mask that facilitates the formation of electrical connections.
    [016] As desired, any number of circuit traces and / or conduction paths can be included in PCB 105 or formed in PCB 105. The circuit traces can be configured to hold the various Rogowski coil sections of a set of Rogowski coil 110, 115, 120, 125 in place. In other words, circuit traces can protect Rogowski's coil sections by preventing the coils from unwinding. In addition, the circuit traces can be configured to connect the Rogowski coil sections together and / or to form a return current path for the Rogowski coil assembly. As desired, the circuit traces can also be configured to connect the Rogowski coil sections to a connector and / or to various measurement processing circuits. Some exemplary circuit traces are described in greater detail below in relation to the exemplary Rogowski coil assemblies 110, 115, 120, 125.
    [017] Turning to the exemplary Rogowski coil set 110, the set 110 may include any number of sections of Rogowski coil. For example, as illustrated, the Rogowski coil assembly 110 can include six coil sections 130a-f. In other embodiments, the coil assembly may include approximately three to eight coil sections, although other quantities of coil sections may be used as desired. Each section of Rogowski coil (individually referred to by reference numeral 130) may include a helical coil of a conductor, such as a wire, which is coiled or wound in a non-magnetic core. As desired, any number of windings or coils can be formed by the conductor to create the Rogowski coil section 130. Some examples of appropriate Rogowski coil sections are discussed in patent publication No US 2011/0025304 by Lint, et al ., entitled “Current Sensing Devices and methods” and deposited on September 25, 2009; and in the patent publication of U.S. No. 2011/0025305 by Lint, et al., entitled “Current Sensing Devices and methods” and filed January 7, 2010. Each of these publications is incorporated by reference into the present invention in its entirety. In certain embodiments of the invention, the Rogowski coil section 130 may include a greater number of windings or coils than can be formed by engraving a Rogowski coil on a printed circuit board. In this regard, the Rogowski coil section 130 can provide relatively higher sensitivity and / or accuracy than conventional printed circuit board coil assemblies.
    [018] According to one embodiment of the invention, each of the Rogowski coil sections 130 can be mounted on an outer surface of the PCB 105. For example, each of the Rogowski coil sections 130 can be mounted on a surface of the PCB 105 and held in place by one or more circuit traces. In certain embodiments, each end of a coil associated with the coil section 130 can be held in place by a respective circuit trace. In this regard, the circuit traces can prevent the coil section 130 from unwinding. In addition, the circuit traces can secure coil section 130 to PCB 105. In addition, circuit traces can connect coil section 130 to one or more other coil sections. For example, the coil section 130 can be connected to adjacent coil sections.
    [019] Additionally, PCB 105 may include an opening for each of the Rogowski coil sets 110, 115, 120, 125. Each of the openings may be configured to receive one or more respective conductors that are monitored by the coil sets Rogowski 110, 115, 120, 125. For example, in reference to the first coil assembly 110, an opening 135 can be provided via PCB 105. Opening 135 can be configured to receive at least one conductor that is monitored by the first coil assembly 110, such as a phase conductor associated with a utility meter. As desired, aperture 135 can include any number of dimensions. For example, opening 135 may be an approximately circular or elliptical opening. Other coil sets 115, 120, 125 can be associated with similar openings configured to receive at least one conductor.
    [020] In certain embodiments of the invention, the Rogowski coil sections 130a-f associated with a Rogowski coil assembly, such as the first set 110, can be formed around or over the opening 135. For example, the sections of coil 130a-f can be formed around or about a periphery of aperture 135. In certain embodiments, each of the coil sections 130a-f can be positioned at a distance approximately "d" from the center of aperture 135 (or opening edge 135). In this regard, coil sections 130a-f can be used to monitor at least one conductor inserted in opening 135.
    [021] Reference will now be made to the second Rogowski coil set 115 to describe exemplary strokes that can be used to hold and / or connect Rogowski coil sections. The second coil set 115 may include components that are similar to those described above for the first coil set 110. For example, the second coil set 115 may include a plurality of Rogowski coil sections that are positioned around or over a opening inside PCB 105. Additionally, Rogowski coil sections can be held in place and connected by any appropriate circuit trace. For simplicity, the same reference numerals as those used with respect to the first coil set 110 will be used to refer to the Rogowski coil sections of the second coil set 115.
    [022] As an example of the circuit traces, a first circuit trace 140a can be used to hold one end of the first coil section 130a and to connect one end of the first coil section 130a to a corresponding end of the second coil section adjacent 130b. A second circuit trace 140b can then be used to hold the opposite end of the second coil section 130b and to connect the opposite end of the second coil section 130b to a corresponding end of the third coil section 130c. In a similar way, additional 140c-f circuit traces can hold and connect the other Rogowski 130c-f coil sections. In this regard, a complete Rogowski coil circuit can be formed. A final circuit trace 140f can be used to hold one end of the last coil section 130f that is not connected to another coil section. Each of the circuit traces can be formed of any suitable conductive material, such as copper, another conductive material, or a conductive metal alloy.
    [023] Additionally, according to an embodiment of the invention, a return path can be formed for each of the Rogowski coil sets 110, 115, 120, 125. For example, in reference to the second coil set 115, a return path 145 can be formed. In certain embodiments, the return path 145 can be formed by one or more circuit traces. For example, a circuit trace can be formed on a rear side of PCB 105 or on an opposite surface of PCB 105 from the surface on which the coil sections 130a-f are mounted. In other embodiments, the return path 145 can be formed of a conductor (for example, a wire, etc.) that passes through the center of each of the Rogowski coil sections 130a-f. Return path 145 can reach from the last coil section 130f within a Rogowski coil circuit back to the first coil section 130a. As desired, an appropriate circuit trace can be formed on PCB 105 at the end of return path 145 to connect the return path to another component of the Rogowski coil assembly 115, such as a measurement circuit or a connector. In addition, an appropriate circuit trace 147 can be formed to connect the other component to the first coil section 130a. Regarding this, a complete Rogowski circuit can be formed in order to facilitate the monitoring of at least one conductor.
    [024] The other two Rogowski coil sets 120, 125 may include components similar to those described above for the first two coil sets 110, 115. For example, the third and fourth coil sets 120, 125 may include a plurality of sections of Rogowski coil that are formed around an opening and held and connected by a plurality of appropriate circuit traces.
    [025] In certain embodiments of the invention, an appropriate measurement processing circuit can be formed on PCB 105 and associated with a Rogowski coil assembly. For example, a measurement processing circuit 150 can be associated with the first Rogowski coil set 110. Similarly, a measurement processing circuit 155 can be associated with the third Rogowski coil set 120. A measurement processing circuit Measurements 150 can include any appropriate circuits and / or circuit components, such as integrators, that are configured to receive a voltage signal measured by a Rogowski coil assembly 110 and process the voltage signal received to determine a current flowing through monitored driver. In certain embodiments, the measurement processing circuit 150 can be attached to a surface of PCB 105. In other embodiments, the measurement processing circuit 150 can be integrated into PCB 105. For example, the measurement processing circuit 150 can be recorded on PCB 105.
    [026] In certain embodiments of the invention, a suitable connector can be formed on PCB 105 and associated with a Rogowski coil assembly. For example, a connector 160 can be associated with the second Rogowski coil set 115. Similarly, a connector 165 can be associated with the fourth Rogowski coil set 125. A connector 160 can include any appropriate terminators (for example, pins , etc.) and / or associated circuit components that are configured to receive a voltage signal measured by a Rogowski coil assembly 115 and provide the voltage signal received to an external measurement processing circuit or a component processing component measurements. In other words, a connector 160 can provide a voltage signal to a measurement processing circuit that is not attached to PCB 105. In certain embodiments, connector 160 may be attached to a surface of PCB 105.
    [027] As desired in certain embodiments, one or more spans or cracks in PCB 105 can be used in combination with one or more respective Rogowski coil sets. For example, a span 170 can be associated with the third Rogowski coil set 120. Similarly, a span 175 can be associated with the fourth Rogowski coil set 125. A span 170 can be formed through PCB 105 between an edge of PCB 105 and an opening within PCB 105. The gap 170 may allow at least one conductor to be easily threaded through PCB 105 and positioned within the opening. In other words, span 170 may allow a Rogowski coil assembly to be relatively easily positioned over a conductor that will be measured or monitored by the Rogowski coil assembly. In embodiments where a span 170 is included, any number of bridges or other appropriate connections can be used to connect sections of Rogowski coil positioned on either side of the span 170.
    [028] In certain embodiments of the invention, one or more suitable capacitive shields can be formed within an opening. For example, in relation to the second Rogowski coil assembly 115, a capacitive shield 180 can be formed inside the opening such that capacitive shield 180 is positioned between the Rogowski coil sections 130a-f and at least one conductor positioned within opening and monitored by coil sections 130a-f. Capacitive shield 180 may include any suitable material, including, but not limited to, copper, aluminum, and / or other non-ferrous conductive materials. As desired, the capacitive shielding material can be used as multiple turns or layers. Alternatively, a shielding blade can be formed. Additionally, the capacitive shield 180 can act as an electrostatic shield or a Faraday cage that reduces noise in a common way in the sensors. Additionally, capacitive shielding 180 can act as a low-pass filter for high frequency noise, thereby improving electromagnetic compatibility and / or electromagnetic interference compliance (“EMC / EMI”) for Rogowski coils.
    [029] As desired, embodiments of the invention may include Rogowski coil assemblies with more or less than the components illustrated in Figure 1. The Rogowski coil assemblies 110, 115, 120, 125 illustrated in Figure 1 are provided only by way of example and are not intended to be limiting.
    [030] Figure 2 is a flow chart of an exemplary method 200 for providing a Rogowski coil assembly, according to an illustrative embodiment of the invention. The method can be used to provide a Rogowski coil assembly in which a plurality of Rogowski coil sections are mounted on a printed circuit board. For example, the method can be used to supply one of the Rogowski coil sets 110, 115, 120, 125 illustrated in Figure 1. Method 200 can start at block 205.
    [031] In block 205, a printed circuit board (“PCB”), such as PCB 105 illustrated in Figure 1, can be provided. According to an embodiment of the invention, an opening can be provided within PCB 105, and the opening can be configured to receive at least one conductor that will be monitored by the Rogowski coil assembly. In certain embodiments, PCB 105 can be formed or manufactured with the opening. In other embodiments, an opening can be sectioned from an existing PCB. In addition, as desired in certain embodiments of the invention, a gap can be formed within the PCB 105 to facilitate the positioning of at least one conductor within the opening. The span may allow a Rogowski coil assembly to be positioned over at least one conductor for monitoring purposes.
    [032] In block 210, a plurality of Rogowski coil sections, such as the Rogowski coil sections 130a-f described above in relation to Figure 1, can be provided. Each of the Rogowski coil sections 130a-f may include a helical coil of a conductor, such as a wire, which is coiled or wound in a non-magnetic core. As desired, any number of windings or coils can be formed by the conductor to create the respective Rogowski130a-f coil sections. Together, the Rogowski coil sections 130a-f can provide a Rogowski coil that is configured to monitor at least one conductor, such as a phase conductor associated with a utility meter.
    [033] In block 215, the Rogowski coil sections 130a-f can be mounted on an outer surface of PCB 105. For example, the Rogowski coil sections 130a-f can be positioned on the outer surface around the opening in the PCB 105. In certain embodiments, each of the Rogowski coil sections 130a-f can be positioned at approximately equal distance from the opening or from the center of the opening. In this regard, a relatively accurate Rogowski coil measurement set can be provided.
    [034] In block 220, a plurality of circuit traces can be provided to retain and / or secure Rogowski coil sections 130a-f to PCB 105. For example, a plurality of weld connections and / or other conductive traces can be formed on PCB 105 to hold Rogowski coil sections 130a-f. As desired, the ends of each of the Rogowski coil sections 130a-f can be held on the PCB 105 by one or more appropriate circuit traces. In this regard, the unfolding of the Rogowski coil sections 130a-f can be avoided. In addition, in certain embodiments of the invention, the plurality of circuit traces can be used to connect the various Rogowski coil sections 130a-f. For example, adjacent coil sections 130a-f can be connected together in order to form a Rogowski coil that is suitable for monitoring at least one conductor.
    [035] In block 225, a return current path or return path can be provided for the Rogowski coil assembly. In certain embodiments, the return path can be formed by one or more circuit traces. For example, a circuit trace can be formed on a rear side of PCB 105 or on an opposite surface of PCB 105 from the surface on which the coil sections 130a-f are mounted. In other embodiments, the return path can be formed of a conductor (for example, a wire, etc.) that passes through the center of each of the Rogowski coil sections 130a-f. The return path can reach from the last coil section 130f within a Rogowski coil circuit back to the first coil section.
    [036] In block 230, a connector or a measurement processing circuit can be provided. For example, a suitable connector can be formed on PCB 105 and associated with a Rogowski coil assembly. A connector can include any appropriate terminators (for example, pins, etc.) and / or associated circuit components that are configured to receive a voltage signal measured by a Rogowski coil assembly and provide the voltage signal received for a circuit external measurement processing or measurement processing component. In other words, a connector can supply a voltage signal to a measurement processing circuit that is not attached to PCB 105.
    [037] In other embodiments, a measurement processing circuit can be formed on PCB 105 and associated with the Rogowski coil set. A measurement processing circuit can include any appropriate circuits and / or circuit components, such as integrators, that are configured to receive a voltage signal measured by a Rogowski coil assembly and process the voltage signal received to determine a current flowing through a monitored conductor. In certain embodiments, the measurement processing circuit can be attached to a surface of PCB 105. In other embodiments, the measurement processing circuit 150 can be integrated into PCB 105. For example, the measurement processing circuit 150 can be recorded on PCB 105.
    [038] Method 200 can be completed after block 230.
    [039] The operations described and shown in method 200 of Figure 2 can be performed or acted in any appropriate order, as desired in various embodiments of the invention. Additionally, in certain realizations, at least a portion of the operations can be performed in parallel. Furthermore, in certain realizations, less or more than the operations described in Figure 2 can be performed.
    [040] Although the invention has been described in connection with what is considered to be the most practical and various achievements at present, it should be understood that the invention should not be limited to the disclosed achievements, but rather is intended to cover several equivalent modifications and provisions included within the scope of the appended claims.
    [041] This written description uses examples to reveal the invention, and includes the best way, and also allows any person skilled in the art to put the invention into practice, including making and using any devices or systems and acting on any built-in methods. The patentable scope of the invention is defined in the claims, and may include other examples that occur to those skilled in the art. Such other examples are intended to be within the scope of the claims if they have structural elements that do not differ from the literal language of the claims, or if they include equivalent structural elements with insubstantial differences from the literal language of the claims.
    权利要求:
    Claims (8)
    [0001]
    1. ROGOWSKI COIL ASSEMBLY (110), comprising: a printed circuit board (105); and a plurality of sections of Rogowski coil (130a-f) mounted on an external surface of the printed circuit board (105) by one or more respective circuit traces (140a-f), characterized by the circuit traces (140a-f) ) retain each end of the plurality of Rogowski coil sections (130a-f) preventing the coil sections from unwinding, connect the plurality of Rogowski coil sections (130a-f) and form a current return path (145 ), in which the current return path (145) is formed on a surface of the printed circuit board (105) opposite to a surface on which the Rogowski coil sections (130a-f) are mounted; a circular opening (135) within the printed circuit board (105) configured to receive at least one conductor which is monitored by the plurality of Rogowski coil sections (130a-f); and a continuous span (170) in the printed circuit board (105) connecting the opening (135) and an edge of the printed circuit board (105), in which a span span of the continuous span (170) is less than one opening opening diameter (135).
    [0002]
    2. ROGOWSKI COIL SET (110), according to claim 1, characterized in that each of the plurality of Rogowski coil sections (130a-f) is positioned at an approximately equal distance from the opening (135).
    [0003]
    3. ROGOWSKI COIL SET (110), according to claim 1, characterized by the plurality of Rogowski coil sections (130a-f) being positioned around the opening (135).
    [0004]
    4. ROGOWSKI COIL ASSEMBLY (110), according to claim 1, further comprising: a capacitive shield (180) positioned inside the opening (135) between the printed circuit board (105) and at least one conductor .
    [0005]
    5. ROGOWSKI COIL ASSEMBLY (110), in accordance with claim 1, further comprising: at least one connector (160) attached to the printed circuit board (105) and configured to provide measurement data collected by the plurality of Rogowski coil sections (130a-f) for an external measurement processing circuit.
    [0006]
    6. ROGOWSKI COIL SET (110), in accordance with claim 1, further comprising: a measurement processing circuit (150) attached to the printed circuit board (105) and configured to receive measurement data collected by plurality of Rogowski coil sections (130a-f) and process the received measurement data.
    [0007]
    7. ROGOWSKI COIL SET (110), according to claim 1, characterized by the plurality of Rogowski coil sections (130a-f) comprising from three to twelve Rogowski coil sections (130a-f).
    [0008]
    8. ROGOWSKI COIL SET (110), according to claim 1, characterized by a return current path (145) for the plurality of Rogowski coil sections (130a-f) comprising one of (i) a dash circuit on the printed circuit board or (ii) a conductor that passes through the plurality of Rogowski coil sections (130a-f).
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    法律状态:
    2014-02-25| B03A| Publication of a patent application or of a certificate of addition of invention [chapter 3.1 patent gazette]|
    2017-01-24| B25G| Requested change of headquarter approved|Owner name: MRH METERS LLC (US) |
    2017-02-07| B25A| Requested transfer of rights approved|Owner name: ACLARA METERS LLC. (US) |
    2017-02-21| B25D| Requested change of name of applicant approved|Owner name: ACLARA METERS LLC. (US) |
    2018-12-11| B06F| Objections, documents and/or translations needed after an examination request according [chapter 6.6 patent gazette]|
    2019-10-01| B06U| Preliminary requirement: requests with searches performed by other patent offices: procedure suspended [chapter 6.21 patent gazette]|
    2020-04-22| B06A| Patent application procedure suspended [chapter 6.1 patent gazette]|
    2020-10-06| B09A| Decision: intention to grant [chapter 9.1 patent gazette]|
    2020-12-29| B16A| Patent or certificate of addition of invention granted [chapter 16.1 patent gazette]|Free format text: PRAZO DE VALIDADE: 20 (VINTE) ANOS CONTADOS A PARTIR DE 17/08/2012, OBSERVADAS AS CONDICOES LEGAIS. |
    优先权:
    申请号 | 申请日 | 专利标题
    US13/212,818|US8872611B2|2011-08-18|2011-08-18|Rogowski coil assemblies and methods for providing the same|
    US13/212,818|2011-08-18|
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