Patent ID: 11876379
Assignee: INNIO JENBACHER GMBH & CO OG
Field: Engines, pumps, turbines (Mechanical engineering)
Classification: CPC H  F | IPC F  H

Claim 0:
1. A method of synchronizing a generator with a power supply grid having a grid frequency, including:
mechanically driving the generator with an internal combustion engine, creating a generator rotary speed corresponding to a generator frequency generated by the generator,
control of the internal combustion engine such that the generator frequency is in a tolerance range, wherein the grid frequency is within the tolerance range,
detecting a phase angle difference (Δφ) between a current and/or a voltage generated by the generator and a grid current and/or a grid voltage to obtain a detected phase angle difference (Δφ),
synchronizing the voltage and/or the current with the grid voltage and/or the grid current based on the detected phase angle difference (Δφ), wherein synchronizing comprises controlling at least one temporary change in one or more parameters to reduce the phase angle difference (Δφ), and the at least one temporary change in the one or more parameters comprises at least one temporary change in an ignition timing (ttemp) relative to a predetermined nominal ignition timing (tnom) of at least one cylinder unit of the internal combustion engine, wherein synchronizing comprises repeatedly switching from the predetermined nominal ignition timing (tnom) to the ignition timing (ttemp) and vice-versa a plurality of times until the phase angle difference (Δφ) is reduced to meet a phase angle tolerance range, wherein the plurality of times of the switching comprises at least five times, wherein the switching holds the ignition timing (ttemp) for less than 0.2 seconds for each of the plurality of times, and
electrically connecting the generator to the power supply grid.