-
公开(公告)号：US20240235195A1
公开(公告)日：2024-07-11
申请号：US18612637
申请日：2024-03-21
Applicant: SMA Solar Technology AG
Inventor： Sebastian Umlauf
IPC: H02J3/01 , H01F27/26 , H01F27/28 , H01F27/40 , H02J3/24 , H02J3/26 , H02J3/36 , H02J3/38 , H02M7/44
CPC classification number: H02J3/01 , H01F27/26 , H01F27/28 , H01F27/40 , H02J3/241 , H02J3/26 , H02J3/38 , H02M7/44 , H02J3/36
Abstract: The disclosure relates to a power electronics device having at least two inverters and a transformer apparatus having a core arrangement, at least one primary winding and at least one secondary winding that wind around the core arrangement at least in sections.
-
公开(公告)号：US20240178671A1
公开(公告)日：2024-05-30
申请号：US18541636
申请日：2023-12-15
Applicant: Optivolt Labs, Inc.
Inventor： Linda Stacey Irish , Sierra Rae King , Kevin Rodriguez
CPC classification number: H02J3/381 , G01R19/16538 , G05F1/67 , H02J3/26 , H02J7/0016 , H02S40/34 , H02S40/36 , H02J2300/26
Abstract: A system for balancing and converting voltage output from photovoltaic modules includes a set of solar substrings and a power conversion circuit. The power conversion circuit includes a balancing section configured to balance voltage output from the set of solar substrings. The power conversion circuit also includes a voltage control section including: a first transformer coupled to the set of solar substrings and configured to step-up voltage from the set of solar substrings; a second transformer arranged in series to the first transformer; and an output capacitor coupled to the second transformer. The system further includes a controller configured to: drive a set of modulation signals to the balancing section and the voltage control section; alternate voltage polarities across the first transformer and the second transformer; and modify output voltage of the power conversion circuit to a target output voltage.
-
公开(公告)号：US20240154419A1
公开(公告)日：2024-05-09
申请号：US18052006
申请日：2022-11-02
Applicant: SWITCHED SOURCE PB, LLC
Inventor： NICHOLAS D. BENAVIDES , CHARLES J. MURRAY
Abstract: A zero-sequence current balancer for a controlling zero-sequence current in a three-phase power system includes a zig-zag transformer coupled to the three-phase power system, an inverter coupled to an output of the zig-zag transformer, and at least one of: (i) a clamp device operating as a normally open switch, the clamp device being provided in between the output of the zig-zag transformer and a neutral conductor (which may be grounded) and being connected in parallel with the inverter, and (ii) a load-break switch provided between the output end of the zig-zag transformer and an input of inverter. A controller is structured and configured to detect a fault condition in the three-phase power system, and in response cause at least one of the closing of the clamp device or the opening of the load-break switch in order to protect the system.
-
公开(公告)号：US20240088671A1
公开(公告)日：2024-03-14
申请号：US18371209
申请日：2023-09-21
Applicant: Optivolt Labs, Inc.
Inventor： Linda Stacey Irish , Sierra Rae King
CPC classification number: H02J3/381 , G01R19/16538 , G05F1/67 , H02J3/26 , H02J7/0016 , H02S40/34 , H02S40/36 , H02J2300/26
Abstract: A system for balancing and converting voltage output from photovoltaic modules includes a set of solar substrings, a power conversion circuit, and a controller. The power conversion circuit includes: a set of windings coupled in series and arranged in parallel to the set of solar substrings; a set of switches coupled in parallel and interposed between the set of solar substrings and the set of windings; and an output switch coupled in series to a first switch, in the set of switches, and an output capacitor. The controller is configured to: oscillate states of the set of switches and the output switch at a first duty cycle; balance voltages output from the set of solar substrings across the set of windings to a nominal output voltage; and modify the nominal output voltage to a target voltage directed to the target load based on the first duty cycle.
-
公开(公告)号：US11804714B2
公开(公告)日：2023-10-31
申请号：US17487560
申请日：2021-09-28
Applicant: SAUDI ARABIAN OIL COMPANY
Inventor： Adel F. Abu-Rejailah , Anas A. AlHamad
Abstract: A system for controlling and monitoring electrical energy loads includes a current transducer configured to monitor values of electrical current in the system, wherein neutral and ground lines are monitored via separate current transducers. Additionally, the system includes a centralized programmable logic controller (PLC) configured to receive measured values from the current transducer in real time and a local PLC configured to receive the measured values from the centralized PLC. Further, the local PLC periodically compares the measured values of the electrical energy with predetermined thresholds and automatically redistributes the electrical energy to electrical energy loads among three phases based on the comparison.
-
Patent Agency Ranking
公开(公告)号：US11670944B2
公开(公告)日：2023-06-06
申请号：US17404756
申请日：2021-08-17
Applicant: AT&T Intellectual Property I, L.P.
Inventor： Satya Vardharajan
CPC classification number: H02J3/26 , G05B13/0265 , H02J3/144 , H02J13/00007 , H02J13/00004 , H02J2203/20
Abstract: Aspects of the subject disclosure may include, for example, embodiments detecting and correcting load imbalance on power supply phases within a managed scope using a software controlled power switch matrix that is resident in each power distribution unit supplying power in the managed scope. Managed scope could include a plurality of power distribution units supplying a plurality of circuit or equipment loads in a plurality of premises. On each PDU, the software controlled switch matrix maintains and changes physical coupling of power supply phases to circuit and equipment loads. Further embodiments include correcting power supply phase load imbalances through software commands to adjust the coupling of power supply phases to circuit or equipment loads. Embodiments are intended to help power administrators maintain power supply phase load balance effectively in a managed scope. Other embodiments are disclosed.
-
公开(公告)号：US20190245381A1
公开(公告)日：2019-08-08
申请号：US16331758
申请日：2017-07-04
Applicant: Dr. Ing. h.c. F. Porsche Aktiengesellschaft
Inventor： Barry Sole
CPC classification number: H02J13/002 , B60L53/60 , G01R19/2513 , G05B17/02 , H02J3/14 , H02J3/26 , H02J3/32 , H02J3/383 , H02J13/0013 , H02J2003/143 , Y02B70/3225 , Y02B70/3266 , Y02B90/222 , Y02B90/2615 , Y02E10/563 , Y02E10/566 , Y02E40/50 , Y02E40/72 , Y04S10/123 , Y04S20/12 , Y04S20/222 , Y04S20/242 , Y04S40/121
Abstract: A method for controlling a supply of at least one load with voltage and/or electric current through an electric network.
-
8.发明授权公开(公告)号：US10063174B2
公开(公告)日：2018-08-28
申请号：US15230536
申请日：2016-08-08
Applicant: General Electric Company
Inventor： Einar Vaughn Larsen , Wei Ren , Dustin Howard , Alfredo Sebastian Achilles
CPC classification number: H02P9/10 , F03D7/0284 , F03D7/044 , F03D9/255 , H02J3/26 , H02K7/183 , H02P9/007 , Y02E10/725 , Y02E40/50
Abstract: The present disclosure is directed to a system and method for controlling an electrical power system connected to a power grid. The method includes determining, via a negative sequence regulator programmed in a controller of the electrical power system, a negative sequence component of at least one electrical condition of the electrical power system. Further, the method includes determining a desired current response based on the negative sequence component of the at least one electrical condition of the electrical power system. Thus, the method also includes determining a control command for the power converter as a function of the desired current response so as to achieve a desired relationship between a voltage condition in the power grid and the negative sequence component of the electrical condition of the electrical power system.
-
公开(公告)号：US09702908B2
公开(公告)日：2017-07-11
申请号：US15015426
申请日：2016-02-04
Applicant: VESTAS WIND SYSTEMS A/S
Inventor： Amit Kumar Gupta , John Godsk Nielsen , Liang Yang
IPC: G01R19/165 , F02B63/04 , F03D7/02 , F03D7/04 , H02J3/26 , H02J3/38 , H02P9/04 , F03D7/00 , G01R19/10 , H02K7/18 , F03D9/25 , H02J3/00
CPC classification number: G01R19/16533 , F03D7/00 , F03D7/0284 , F03D7/042 , F03D9/255 , F03D9/257 , F05B2270/337 , G01R19/10 , H02J3/26 , H02J3/386 , H02J2003/001 , H02K7/183 , H02P9/04 , Y02E10/723 , Y02E10/725 , Y02E10/763 , Y02E40/50
Abstract: A method for operating a power generation system coupled to a power grid during a grid unbalance event, a method for determining an injection current to be supplied into a power grid by a power generation system, and a method for addressing an asymmetric grid fault in a power grid connected to a power generation system are provided. The methods may be carried out based on a reactive or an active power/current priority.
-
10.发明授权公开(公告)号：US09640994B2
公开(公告)日：2017-05-02
申请号：US13404716
申请日：2012-02-24
Applicant: Hongbo Sun , Anamika Dubey
Inventor： Hongbo Sun , Anamika Dubey
Abstract: Three phase power flow analysis of an unbalanced power distribution system decouples voltage changes resulting from nodal admittance matrix into one contribution from a real part, conductance matrix, and other contribution from an imaginary part, and a susceptance matrix. A first voltage change and second voltage change resulting from conductance and susceptance matrices are determined respectively. The voltages of a node of the power distribution system are determined as a combination of first and second voltages.
-
-
-
-
-
-
-
-
-
Search Results
414
records
(took 0.118 seconds)
