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公开(公告)号：US20240357712A1
公开(公告)日：2024-10-24
申请号：US18305033
申请日：2023-04-21
Applicant: WAGSTAFF, INC.
Inventor： Nicholas Ryan TEBBE , Jacob Lee Kerbs
Abstract: A system, method, and apparatus are provided for electrically shielding heated components, and more particularly, to electrically shielding electrically heated components in such a way as to be compatible with GFCI (ground fault circuit interrupter) protected circuits. Examples include an electrically shielded heated component including: a conductor, where the conductor is a heating element connected between a power line and a neutral line of a circuit from a GFCI; and a shield proximate the conductor and connected to the GFCI, where the shield receives a portion of current from the conductor and returns the portion of the current received to the GFCI.
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公开(公告)号：US12113348B2
公开(公告)日：2024-10-08
申请号：US17628545
申请日：2020-02-12
Applicant: Virga Systems LLC
Inventor： Vahid Madani , Ronald E. Smith , Robert B. Stuart , Kenneth Hyung Choi , Justin Dongjin Choi
CPC classification number: H02H11/00 , G01R19/2513 , H02H3/027 , H02H3/16 , H02H3/26 , H02J3/001 , H02J13/00002
Abstract: The present disclosure pertains to detection of abnormal, risky, or aberrant conditions in a power distribution network and to corresponding trip signals being used to trip open devices such as reclosers upstream of where the abnormal condition is detected. Detection of a missing broadband over power-line signal or of an open circuit between phases of a power distribution circuit may prevent severed conductors from causing a ground fault, therefore avoiding the possibility of fire and dangerous conditions.
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公开(公告)号：US12109959B2
公开(公告)日：2024-10-08
申请号：US17487762
申请日：2021-09-28
Applicant: DENSO TEN Limited
Inventor： Takeshi Matsumoto , Daiki Hakushima , Keiichi Yonezaki
IPC: B60R16/033 , H02H3/08 , H02H3/16 , H02H7/28 , H02J7/14
CPC classification number: B60R16/033 , H02H3/08 , H02H3/16 , H02H7/28 , H02J7/1423
Abstract: A power supply device includes: a first system; a second system; an inter-system switch configured to be able to connect and disconnect between the first system and the second system; a determining unit configured to keep the inter-system switch in an ON state in a normal time, and turn off the inter-system switch and determine which system a ground fault has occurred in, if detecting a ground fault of the first system or the second system; and a suppression circuit configured to suppress an electric discharge of the second power supply and supply electric power for ground fault detection to the second system, and the determining unit determines whether any ground fault has occurred in the second system or not, based on the electric power which is supplied from the suppression circuit to the second system.
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公开(公告)号：US12089301B1
公开(公告)日：2024-09-10
申请号：US18356773
申请日：2023-07-21
Applicant: WAGSTAFF, INC.
Inventor： Nicholas Ryan Tebbe , Jacob Lee Kerbs
Abstract: A system, method, and apparatus are provided for electrically shielding heated components, and more particularly, to electrically shielding electrically heated components in such a way as to be compatible with GFCI (ground fault circuit interrupter) protected circuits. Examples include an electrically shielded heated component including: a conductor, where the conductor is a heating element connected between a power line and a neutral line of a circuit from a GFCI; and a shield proximate the conductor and connected to the GFCI, where the shield receives a portion of current from the conductor and returns the portion of the current received to the GFCI.
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公开(公告)号：US12074424B2
公开(公告)日：2024-08-27
申请号：US17300485
申请日：2021-07-19
Applicant: Ronald E. Smith
Inventor： Vahid Madani , Robert B. Stuart , Ronald E. Smith , Kenneth Hyung Choi , Justin Dongjin Choi
CPC classification number: H02H11/00 , G01R19/2513 , H02H3/027 , H02H3/16 , H02H3/26 , H02J3/001 , H02J13/00002
Abstract: The present disclosure pertains to detection of abnormal, risky, or aberrant conditions in a power distribution network and to corresponding trip signals being used to trip open devices such as reclosers upstream of where the abnormal condition is detected. Detection of open phase on a distribution circuit prevents severed conductors from causing a ground fault, therefore avoiding the possibility of fire and dangerous conditions. The voltage unbalance may be measured using an end of line relay that includes an electrical sensor or relay, a tripping mechanism, and a signal transmitter.
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Patent Agency Ranking
公开(公告)号：US12068596B2
公开(公告)日：2024-08-20
申请号：US17606253
申请日：2020-04-24
Inventor： David Molenaar , Rueben Rajasingam , David Marcuson , Craig Broadly
CPC classification number: H02H3/16 , H02H1/0007
Abstract: A short-circuit mitigation device for use in an electrolytic cell (101) is disclosed. The device comprises a switch (302) connected in parallel with a damping load (502). The switch is disposed between a contact (102) and an electrode (106) of the cell (101) to selectively provide an electrical conduction path between the contact and the electrode. The switch comprises a plurality of metal-oxide-semiconductor field-effect transistors (MOSFETs) (402) connected in parallel. The device further comprises a switch controller (306) operably associated with the switch (302) to monitor electric current (308) through the switch and to generate a toggle signal (309) to toggle the switch (302) from a conductive closed state to a non-conductive open state when the electric current exceeds a first threshold value.
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7.发明公开公开(公告)号：US20240272225A1
公开(公告)日：2024-08-15
申请号：US18582205
申请日：2024-02-20
Applicant: Hubbell Incorporated
Inventor： Gary Michael MILLER , William Vernon MILLER, III , Edward Shi CHEN
CPC classification number: G01R31/3277 , G01R35/00 , H02H1/0015 , H02H3/16 , H02H3/28 , H02H3/331 , H02H3/335
Abstract: Passive monitoring the integrity of current sensing devices and associated circuitry in GFCI and AFCI protective devices is provided. A protection circuit interrupter employs a capacitively coupled noise signal obtained by an arrangement of one or both of line side arms relative to a Rogowski coil. The noise signal is monitored while the line and load sides of a protective circuit interrupter are disconnected, and the connection of the line and load sides disabled if the noise signal fails to correlate sufficiently to a reference noise cycle. When the line and load sides are connected, the RMS value of the observed current signal is monitored such that the line and load sides are disconnected if the observed current signal fails to meet an RMS threshold. The observed current signal is compensated by subtracting the reference noise cycle prior to monitoring for the fault condition applicable to the protective device.
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公开(公告)号：US20240266820A1
公开(公告)日：2024-08-08
申请号：US18577178
申请日：2022-07-03
Applicant: PHOENIX CONTACT GmbH & Co. KG
Inventor： Tobias GROTE , Lutz HEUER , Detlev SCHUERGENS
CPC classification number: H02H3/16 , H02H1/0007
Abstract: A DC voltage switching device for coupling a DC voltage load via a positive and a negative conductor to a DC voltage source, wherein the positive and negative conductors are routed through the DC voltage switching device. The DC voltage switching device comprises
a first switching element for coupling and decoupling the DC voltage load, which is a semiconductor-based, electronically controllable switching element integrated in the positive or negative conductor;
a fuse integrated in the respective other conductor;
a sensor, at least for detecting the current flow of the conductor in which the first switching element is integrated; and
an evaluation device connected to the sensor and the first switching element, which is set up to compare the detected current flow with respect to a threshold value and to trigger the first switching element in order to disconnect the DC voltage load when the threshold value is passed.-
公开(公告)号：US11984284B2
公开(公告)日：2024-05-14
申请号：US17704246
申请日：2022-03-25
Applicant: DONG-A ELECTRIC CO., LTD.
Inventor： Tae Woo Kim , Chul Bum Joo , Eun Sik Park
Abstract: Proposed is an earth leakage breaker having a built-in trip module type circuit breaker, which is installed at a line between a power supply and a load and has a trip module configured to cut the line off, the earth leakage breaker including: a CT installed on the line and configured to monitor an instantaneous current; and a control circuit unit comprising: an operation module configured to receive an instantaneous current sensed by the CT, to measure an instantaneous current value per unit time, and to calculate a slope of the instantaneous current per unit time; a determination module configured to determine a case as an overload state, the case having the slope exceeding an overcurrent determination value A, and to cause an overload state determination signal to be output; and an output module configured to output a trip module actuation signal according to the overload state determination signal of the determination module and to cut off the line, and accordingly, the earth leakage breaker causes the trip module to be actuated according to an instantaneous current slope.
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公开(公告)号：US20240048045A1
公开(公告)日：2024-02-08
申请号：US18378910
申请日：2023-10-11
Applicant: Koolbridge Solar, Inc.
Inventor： Paul Wilkinson Dent
IPC: H02M1/32 , H02M7/537 , H02M1/36 , H02M7/5387 , H02J3/00 , H02J3/38 , H02J7/00 , H02J7/35 , H02J9/06
CPC classification number: H02M1/32 , H02M7/537 , H02M1/36 , H02M7/53871 , H02J3/007 , H02J3/38 , H02J3/00 , H02J3/388 , H02J7/0068 , H02J7/35 , H02J9/061 , H02H3/16
Abstract: A DC to AC inverter for solar energy installations is configured to convert DC input power at a first voltage to a desired AC output power waveform. The inverter includes multilevel circuitry configured to define a plurality of different levels, wherein each level is defined by lower and upper voltage values; a jittering controller configured to jitter between the lower and upper voltage values in each level in order to generate a preliminary AC waveform by producing waveform values between the lower and upper voltage values within each level; and a low pass filter configured to filter the preliminary AC waveform to remove the jittering in order to provide a smooth output AC waveform.
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