Mixed current sensor and method for fitting said sensor
US-9423428-B2 · Aug 23, 2016 · US
Current sensing circuit
US2016161530A1 · US · A1
| Field | Value |
|---|---|
| Publication number | US-2016161530-A1 |
| Application number | US-201514663848-A |
| Country | US |
| Kind code | A1 |
| Filing date | Mar 20, 2015 |
| Priority date | Dec 4, 2014 |
| Publication date | Jun 9, 2016 |
| Grant date | — |
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- Title
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Abstract
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A current sensing circuit includes: a current sensing transformer including a primary coil connected to an input terminal of a converter and a secondary coil; a first current path connected to the secondary coil, including a first resistor, and configured to allow a forward current induced in the secondary coil to flow therethrough; and a second current path connected to the secondary coil, including a second resistor, and configured to allow a reverse current induced in the secondary coil to flow therethrough, wherein the first current path further includes at least one voltage drop element disposed between the secondary coil and the first resistor.
First claim
Opening claim text (preview).
What is claimed is: 1 . A current sensing circuit, comprising: a current sensing transformer including a primary coil connected to an input terminal of a converter and a secondary coil; a first current path connected to the secondary coil, including a first resistor, and configured to allow a forward current induced in the secondary coil to flow therethrough; and a second current path connected to the secondary coil, including a second resistor, and configured to allow a reverse current induced in the secondary coil to flow therethrough, wherein the first current path further includes at least one voltage drop element disposed between the secondary coil and the first resistor. 2 . The current sensing circuit of claim 1 , wherein the at least one voltage drop element is at least one of a resistor, a diode, and a Zener diode. 3 . The current sensing circuit of claim 1 , wherein the first resistor has resistance less than that of the second resistor. 4 . The current sensing circuit of claim 1 , wherein a positive voltage applied to the first resistor and a negative voltage applied to the second resistor have an equal magnitude. 5 . The current sensing circuit of claim 1 , wherein the at least one voltage drop element drops a voltage by a magnitude of an offset voltage applied to the first resistor in a low-load region in which an output load required by the converter is less than a preset reference value. 6 . The current sensing circuit of claim 1 , wherein: the first current path further includes a first diode, such that the forward current flows through the first current path, and the at least one voltage drop element is connected in series with the first diode. 7 . The current sensing circuit of claim 1 , wherein a number of and a type of the at least one voltage drop element depend on a magnitude of an offset voltage applied to the first resistor.
Assignees
Inventors
Classifications
separating AC and DC · CPC title
Frequency selective voltage or current level measuring (measuring frequency G01R23/00; testing attenuation in line transmission systems H04B3/48; monitoring testing in transmission systems H04B17/00) · CPC title
- G01R15/183Primary
using transformers with a magnetic core · CPC title
- G01R19/00Primary
Arrangements for measuring currents or voltages or for indicating presence or sign thereof (G01R5/00 takes precedence; for measuring bioelectric currents or voltages A61B5/24) · CPC title
- G01R15/18Primary
using inductive devices, e.g. transformers · CPC title
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Frequently asked questions
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- What does patent US2016161530A1 cover?
- A current sensing circuit includes: a current sensing transformer including a primary coil connected to an input terminal of a converter and a secondary coil; a first current path connected to the secondary coil, including a first resistor, and configured to allow a forward current induced in the secondary coil to flow therethrough; and a second current path connected to the secondary coil, inc…
- Who is the assignee on this patent?
- Hyundai Motor Co Ltd, Kia Motors Corp
- What technology area does this patent fall under?
- Primary CPC classification G01R15/183. Mapped technology areas include Physics.
- When was this patent published?
- Publication date Thu Jun 09 2016 00:00:00 GMT+0000 (Coordinated Universal Time) (A1). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).