Patent ID: 11873112
Assignee: SAFRAN ELECTRICAL & POWER
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC B  H | IPC B  H

Claim 6:
7. A method for synchronizing energy sources coupled on an electrical network supplying at least one electrical load of an aircraft, implemented by a system (100) for synchronizing energy sources coupled on an electrical network supplying said electrical load, said system comprising:
a principal electrical energy source (1) supplying said electrical load, comprising a multistage generator set (6), said multistage generator set (6) comprising:
a primary stage (6a) comprising a permanent-magnet generator,
a secondary stage (6b) comprising an exciter, and
a tertiary stage (6c) comprising a principal generator connected to said electrical load;
an auxiliary electrical energy source (3) configured to supply said electrical load (2) with an additional electrical power supplementing the principal electrical energy source;
a converter (4) through which the auxiliary electrical energy source (3) is connected with the electrical load (2) in parallel with the principal electrical energy source;
a synchronization device (72);
said method comprising steps consisting of:
measuring (E1), by the synchronization device, an electrical voltage generated by the permanent-magnet generator of the primary stage (6a) of the multistage generator set (6),
measuring an electrical frequency at terminals of the converter;
comparing the measured electrical frequency to a frequency threshold or comparing a level of use of the principal electrical energy source deduced from the measured electrical frequency to an over-use threshold;
when the measured electrical frequency is above the frequency threshold or when the level of use of the principal electrical energy source is below the over-use threshold, control the converter for the electrical load to be supplied with only the principal electrical power; and
when the measured electrical frequency reaches the frequency threshold or when the level of use of the principal electrical energy source reaches the over-use threshold, controlling (E3) the converter, by the synchronization device (72), for the electrical load to be supplied with both the principal electrical power and the additional electrical power and for an electrical frequency of the additional electrical power to be slaved to the frequency of the measured electrical voltage.