Method and system of self-adaptive setting of closed-loop parameters for suppressing photovoltaic coupling harmonics
US12278492B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 16, 2024 |
| Grant date | Apr 15, 2025 |
| Priority date | — |
| Expiry date | Dec 16, 2044 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02J2300/24
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
The present invention provides a method and system of self-adaptive setting of closed-loop parameters for suppressing PV coupling harmonics, comprising: acquiring node voltages and node currents of PV grid-connected inverters; constructing harmonic coupling admittance matrix according to the node voltages and node currents; calculating an amplitude of each element in the constructed harmonic coupling admittance matrix; screening contribution sources of coupling harmonics according to the calculated amplitude of the each element; evaluating quantitatively harmonic admittance of the PV grid-connected inverter according to screened contribution sources; and, carrying out optimization iteration for double-closed-loop PI control parameters of inverter with objective of minimizing the coupling harmonics of the PV grid-connected inverter according to results of the quantitative evaluation of the harmonic admittance, to complete self-adaptive setting of closed-loop parameters for suppressing PV coupling harmonics.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.