SMA Solar Technology has been granted a patent for a method that identifies the assignment of phase lines in an electrical distribution grid to connections of an unbalanced-load capable device. The method involves setting target parameters, detecting measurement profiles, and comparing them to determine the correct assignments. GlobalData’s report on SMA Solar Technology gives a 360-degree view of the company including its patenting strategy. Buy the report here.
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According to GlobalData’s company profile on SMA Solar Technology, Smart energy mgmt systems was a key innovation area identified from patents. SMA Solar Technology's grant share as of June 2024 was 51%. Grant share is based on the ratio of number of grants to total number of patents.
Method for assigning phase lines in electrical devices
The patent US12044751B2 outlines a method and apparatus for identifying the assignment of phase lines in an electrical distribution grid to connections of an electrical device designed for unbalanced-load operation. The method involves setting target parameters for an unbalanced load profile at each connection of the device, which are represented as signal forms with distinct temporal profiles. A detection circuit measures the temporal profiles of parameters on the phase lines, and these profiles are compared with the target parameters. The assignment of phase lines to device connections is determined based on this comparison. Additional features include signaling the start or end of parameter setting, indicating correct or incorrect assignments, and conducting corrective actions if necessary.
The apparatus described in the patent includes a control circuit for setting target parameters, a detection circuit for measuring temporal profiles on phase lines, and an evaluation circuit for comparing these profiles. The electrical device can be an energy-feeding device, such as a photovoltaic inverter, or a device that is both energy-feeding and energy-consuming, like a battery inverter. The invention emphasizes the importance of distinguishing signal forms at the connections, which are temporally correlated with the target parameters in the detected measurement parameters. This innovative approach aims to enhance the efficiency and accuracy of managing unbalanced loads in electrical distribution systems.
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