公开(公告)号：US20210408793A1

公开(公告)日：2021-12-30

申请号：US17473150

申请日：2021-09-13

Applicant: SMA Solar Technology AG

Inventor： Alexander Unru ,  Moritz Welker ,  Neidhardt Bechtel ,  Sybille Pape

IPC: H02J3/26 ,  H02M7/5387

Abstract: A method for three-phase infeed of electrical power from a DC source into a three-phase AC grid by means of an inverter includes measuring phase-specific grid voltages of the three-phase AC grid, and determining a grid frequency from the measured phase-specific grid voltages. The method also includes generating phase-specific voltage reference values from the phase-specifically measured grid voltages and the determined grid frequency, and generating phase-specific target current values using phase-specific predetermined target current amplitude values, the phase-specific voltage reference values and respective grid voltage amplitudes.

公开(公告)号：US11855459B2

公开(公告)日：2023-12-26

申请号：US17473150

申请日：2021-09-13

Applicant: SMA Solar Technology AG

Inventor： Alexander Unru ,  Moritz Welker ,  Neidhardt Bechtel ,  Sybille Pape

IPC: H02M7/5387 ,  H02J3/26

CPC classification number: H02J3/26 ,  H02M7/53875

Abstract: A method for three-phase infeed of electrical power from a DC source into a three-phase AC grid by means of an inverter includes measuring phase-specific grid voltages of the three-phase AC grid, and determining a grid frequency from the measured phase-specific grid voltages. The method also includes generating phase-specific voltage reference values from the phase-specifically measured grid voltages and the determined grid frequency, and generating phase-specific target current values using phase-specific predetermined target current amplitude values, the phase-specific voltage reference values and respective grid voltage amplitudes.