CONTROL AND ELECTRICAL SUPPLY SYSTEM FOR HELICOPTER GAS TURBINE ENGINES Russian patent published in 2018 - IPC H02J3/38 

FIELD: electricity.

SUBSTANCE: electrical control and power supply system for at least one helicopter motor-generator, wherein the system comprises the first DC/AC converter (30) for supplying AC electric power optionally to the mentioned at least one motor-generator, depending on respective positions of contactors (320, 322, 324, 326, 328, 330, 332) of the switching matrix (32) driven by the electronic control circuit (34). The first DC/AC converter is supplied with a direct current from a DC power supply source which is formed either by an AC voltage rectification circuit (36) outputted via the contactor (22) by an APU (16) starter-generator (18) or by a DC/DC buck converter (38) supplied by the battery (20) via a contactor (24), wherein the mentioned switching matrix additionally comprises a contactor (328) for connecting the mentioned first DC/AC converter in parallel with the mentioned second DC/AC converter, supplying additional power from the mentioned APU starter-generator to the mentioned at least one motor-generator from the mentioned motor-generators as soon as at least one of the mentioned motor-generators is started.

EFFECT: provision of additional power supply to the motor-generator.

4 cl, 1 dwg