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公开(公告)号：US11558011B2
公开(公告)日：2023-01-17
申请号：US15982412
申请日：2018-05-17
Applicant: SMA Solar Technology AG
Inventor： Gerd Bettenwort , Christopher Merz
Abstract: A method for detecting a potential-induced degradation (PID) of PV modules of a PV installation includes operating a PV generator at a maximum power point (MPP), at a first generator voltage (U1) and first generator current (I1), and at a second generator voltage (U2) and second generator current (I2), where a first power (P1) at the first generator voltage (U1) is in a predefined first ratio V1=P1/PMPP and V1≤1, with the power (PMPP) at the maximum power point (MPP) of the PV generator, and where a second power (P2) at the second generator voltage (U2) is in a predefined second ratio V2=P2/P1 and V2
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公开(公告)号：US20220368154A1
公开(公告)日：2022-11-17
申请号：US17322095
申请日：2021-05-17
Applicant: SMA Solar Technology AG
Inventor： Claus Allert , Aleksandra-Sasa Bukvic-Schaefer , Harald Christian Benz , Patrick Blair Reynolds
Abstract: Disclosed is an electrical unit with a first port configured to be operatively connected to an AC-grid, a second port configured to be operatively connected to an AC-load, and a third port to be operatively connected to an AC-side of a first inverter. The electrical unit includes a first choke arranged between the third port and the second port. The electrical unit is configured to transfer electrical power provided by the first inverter from the third port via the first choke to the second port. The electrical unit is configured to provide grid-forming electrical power to the second port in case of disconnection from the AC-grid at the first port. Further disclosed is a backup power system and a method for operating a backup power system.
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公开(公告)号：US11470750B2
公开(公告)日：2022-10-11
申请号：US16951064
申请日：2020-11-18
Applicant: SMA Solar Technology AG
Inventor： Martin Dziuba
Abstract: An electrical or electronic device with a housing which includes a rear wall and a side wall peripherally surrounding the rear wall, contains a first region and a second region. The first region includes a shielding from the second region with respect to electromagnetic compatibility (EMC). The housing includes a stepped projection on an inner side of the side wall and/or of the rear wall. The shielding for electromagnetic compatibility includes a shielding plate, by means of which the first region is delimited from the second region. An electrical connection of the shielding plate to the side wall and/or to the rear wall is formed in that a peripheral region that delimits the shielding plate areally overlaps the stepped projection, at least along most of its length, and is fastened on it.
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公开(公告)号：US11303132B2
公开(公告)日：2022-04-12
申请号：US16906246
申请日：2020-06-19
Applicant: SMA Solar Technology AG
Inventor： Andreas Falk
Abstract: A converter includes an input configured to be connected to a DC source, at least one transducer module coupled to the input, and comprising a first, a second and a third bridge arm, wherein each of the bridge arms respectively has a phase output, and a common DC link circuit coupled to the input and the bridge arms. The first and second bridge arms are configured to provide a first power in the form of alternating current at their respective phase outputs. An energy store is configured to be connected to the phase output of the third bridge arm, and the third bridge arm is configured to exchange a second power between the DC source and the energy store and between the energy store and the DC link circuit/ A control unit is configured to control the bridge arms in such a manner that the sum of the first power and the second power corresponds to a constant set point.
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公开(公告)号：US20220109401A1
公开(公告)日：2022-04-07
申请号：US17553865
申请日：2021-12-17
Applicant: SMA Solar Technology AG
Inventor： Michael Viotto , Markus Hopf , Bernhard Schropp
Abstract: The disclosure relates to a method for determining a characteristic curve for a photovoltaic (PV) string of a photovoltaic system having an inverter which is connected to the photovoltaic string and to a power supply network. The photovoltaic string includes a series connection of a plurality of photovoltaic modules, in which series connection at least one of the photovoltaic modules is integrated into the series connection of the photovoltaic modules via a DC/DC converter. The at least one DC/DC converter operates the photovoltaic module assigned thereto in a first operating mode M1 at a maximum power point by varying, over time, a conversion ratio of output voltage (UOut) to input voltage (UIn), and operates the photovoltaic module in a second operating mode M2 with a conversion ratio of output voltage (UOut) to input voltage (UIn) that is constant over time. The method includes operating the at least one DC/DC converter in the second operating mode M2 in response to a current signature for the current (IStr) through the photovoltaic string, determining the characteristic curve by varying the current IStr or the voltage UStr of the photovoltaic string by the inverter, and detecting values assigned to one another for current IStr and voltage UStr of the photovoltaic string in the second operating mode M2 of the DC/DC converter.
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Patent Agency Ranking
公开(公告)号：US20220007498A1
公开(公告)日：2022-01-06
申请号：US17480223
申请日：2021-09-21
Applicant: SMA Solar Technology AG
Inventor： Frank Papenfuss , Lars Bethke , Thomas Kuehn , Christian Gehrke
Abstract: A relay arrangement includes at least two series-connected relays, which are mechanically and electrically connected to a main printed circuit board via first terminals and second terminals, and at least one flat conductor for conducting current between the at least two series connected relays. The flat conductor is mechanically connected to the main printed circuit board and electrically and thermally connected to the first terminals of the relays, and the at least one flat conductor is configured to dissipate heat produced during operation of the relays.
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公开(公告)号：US20210384824A1
公开(公告)日：2021-12-09
申请号：US17410225
申请日：2021-08-24
Applicant: SMA Solar Technology AG
Inventor： Burkard Mueller
Abstract: A power electronics device has a first power semiconductor switch and a driver circuit and enables a supply of electrical voltage to a driver circuit. An auxiliary circuit arrangement has a supply capacitor, an auxiliary capacitor, a normally off auxiliary semiconductor switch, a diode and a bootstrap diode. The auxiliary semiconductor switch is connected to a reference potential connection of the first power semiconductor switch via a connection point, starting from the connection point, a series connection of the diode, a second connection point and the auxiliary capacitor is arranged in parallel with the auxiliary semiconductor switch. When the auxiliary semiconductor switch is in the off state, the auxiliary capacitor is charged by the flow of current through the first power semiconductor switch.
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28.发明授权公开(公告)号：US11146072B2
公开(公告)日：2021-10-12
申请号：US16661037
申请日：2019-10-23
Applicant: SMA Solar Technology AG
Inventor： Stefan Buchhold , Jens Friebe , Michael Kotthaus , Torsten Soederberg , Thomas Wappler , Ephraim Moeser
Abstract: The disclosure relates to an inverter with at least one inverter bridge and at least two galvanically isolating DC/DC converters, outputs of the DC/DC converters being connected in parallel with one another and being connected to inputs of the inverter bridge. At least two of the DC/DC converters are intercoupled on the input side via a diode, such that the diode is connected with its terminals to one of the inputs of the two direct voltage converters in each case. The disclosure also relates to a use for such an inverter.
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公开(公告)号：US20210313809A1
公开(公告)日：2021-10-07
申请号：US17349074
申请日：2021-06-16
Applicant: SMA Solar Technology AG
Inventor： Marlies Richter , Ferdinand Wikullil , Maurice Gonska , Matthias Groene , Mathias Buenemann , Alexander Unru , Mats Bernsdorff
Abstract: A method is disclosed for controlling an electrical installation having electrical devices operated in an energy-producing, energy-storing and/or energy-consuming manner and are connected to an energy supply grid. The method includes a first stage which is aimed at achieving an installation target PAnl,Soll for a power flow PAnl assigned to the installation at the grid connection point, and a second stage which is aimed at achieving an individual device target PGer,Soll,i for a power flow PGer,i of each device from the plurality of devices. On the basis of detection of a power flow PAnl of the installation at a grid connection point and a comparison of the detected power flow PAnl of the installation with the installation target PAnl,Soll, the installation is operated in the second stage if the detected power flow PAnl of the installation is within a tolerance range around the installation target PAnl,soll, or is otherwise operated in the first stage. A control unit and such an installation are likewise described.
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公开(公告)号：US11129272B2
公开(公告)日：2021-09-21
申请号：US16519358
申请日：2019-07-23
Applicant: SMA Solar Technology AG
Inventor： Frank Papenfuss , Lars Bethke , Thomas Kuehn , Christian Gehrke
Abstract: A relay arrangement includes at least two series-connected relays, which are mechanically and electrically connected to a main printed circuit board via first terminals and second terminals, and at least one flat conductor for conducting current between the at least two series connected relays. The flat conductor is mechanically connected to the main printed circuit board and electrically and thermally connected to the first terminals of the relays, and the at least one flat conductor is configured to dissipate heat produced during operation of the relays.
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