Title:
TRACKING METHOD AND TRACKING DEVICE FOR A VOLTAGE TRANSFORMER FOR A PHOTOVOLTAIC SYSTEM
Document Type and Number:
WIPO Patent Application WO/2013/060692
Kind Code:
A3
Abstract:
The invention relates to a tracking method for a voltage transformer, in particular an inverter, of a photovoltaic system. In said method, an intermediate circuit voltage (UZW) is repeatedly decreased or increased in one direction to lower or higher voltage by voltage steps of a specified magnitude (ΔU). The method is characterized in that an average rate of change (|ΔU/Δt|) of the intermediate circuit voltage (UZW) in a partial time period between two voltage steps is limited by a maximum average rate of change, the maximum average rate of change being defined according to the magnitude of the intermediate circuit voltage (UZW). The invention further relates to a tracking device (10) designed to perform the tracking method and to an inverter equipped with said tracking device.
Inventors:
BOCK MARTIN (DE)
MUELLER TOBIAS (DE)
ORTMANN THOMAS (DE)
UNRU ALEXANDER (DE)
MUELLER TOBIAS (DE)
ORTMANN THOMAS (DE)
UNRU ALEXANDER (DE)
Application Number:
PCT/EP2012/070991
Publication Date:
August 01, 2013
Filing Date:
October 23, 2012
Export Citation:
Assignee:
SMA SOLAR TECHNOLOGY AG (DE)
International Classes:
H02J3/38; G05F1/67
Foreign References:
| US5268832A | 1993-12-07 | |||
| US5892354A | 1999-04-06 |
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