Invention Grant
- Patent Title: Method and device for recognizing faults in a photovoltaic system
- Patent Title (中): 识别光伏系统故障的方法和装置
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Application No.: US13500651Application Date: 2010-10-11
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Publication No.: US09553215B2Publication Date: 2017-01-24
- Inventor: Michael Ammer , Thomas Muehlberger , Roland Proetsch , Yvonne Zwirchmayr
- Applicant: Michael Ammer , Thomas Muehlberger , Roland Proetsch , Yvonne Zwirchmayr
- Applicant Address: AT Pettenbach
- Assignee: Fronius International GmbH
- Current Assignee: Fronius International GmbH
- Current Assignee Address: AT Pettenbach
- Agency: Collard & Roe, P.C.
- Priority: ATA1600/2009 20091009
- International Application: PCT/AT2010/000382 WO 20101011
- International Announcement: WO2011/041819 WO 20110414
- Main IPC: G01R31/26
- IPC: G01R31/26 ; H01L31/02 ; H02S50/10
Abstract:
The invention relates to a method and a device for recognizing faults in a photovoltaic system (1). A first output voltage (U0, UMPP) of the system (1) and/or a first parameter derived from the output voltage (U0, UMPP) is determined at a first point in time in a first operating state of the photovoltaic system (1). At a second point in time in a second operating state comparable to the first operating state, a second output voltage (U0, UMPP) and/or a second parameter of the system (1) derived from the output voltage (U0, UMPP) is determined. Finally, a deviation between the first and the second output voltage (U0, UMPP) and/or between the first and the second parameter is identified and a fault notification is output if the deviation exceeds a predeterminable threshold.
Public/Granted literature
- US20120247542A1 METHOD AND DEVICE FOR RECOGNIZING FAULTS IN A PHOTOVOLTAIC SYSTEM Public/Granted day:2012-10-04
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