Invention Grant
- Patent Title: Method for operating an inverter assembly and inverter assembly for carrying out the method
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Application No.: US18722673Application Date: 2022-12-22
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Publication No.: US12249929B2Publication Date: 2025-03-11
- Inventor: Harald Kreuzer , Roland Pieler , Christoph Pernegger , Richard Grasboeck
- Applicant: Fronius International GmbH
- Applicant Address: AT Pettenbach
- Assignee: Fronius International GmbH
- Current Assignee: Fronius International GmbH
- Current Assignee Address: AT Pettenbach
- Agency: Collard & Roe, P.C.
- Priority: EP21217364 20211223
- International Application: PCT/EP2022/087441 WO 20221222
- International Announcement: WO2023/118417 WO 20230629
- Main IPC: H02M7/5395
- IPC: H02M7/5395 ; H02M1/00 ; H02M1/12

Abstract:
In a method for operating an inverter assembly and inverter assembly for carrying out the method, to reduce the risk of triggering a ground fault circuit interrupter, before feeding in the alternating voltage, the leakage capacitance to ground is determined at the DC input of each inverter, and which AC output is connected to which line of the supply network is determined, and, taking into consideration the leakage capacitance and a defined maximum leakage current and the connection situation at the AC output, the power units are asymmetrically modulated so that the amplitudes of the voltages at the AC outputs of the power units differ in size. The voltage with the greater amplitude comes about at the AC output of this power unit connected to the phase connection. The voltage with the lower amplitude comes about at the AC output of the power unit connected to the neutral conductor.
Public/Granted literature
- US20240421725A1 METHOD FOR OPERATING AN INVERTER ASSEMBLY AND INVERTER ASSEMBLY FOR CARRYING OUT THE METHOD Public/Granted day:2024-12-19
Information query
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