METHOD AND SYSTEM OF START AND OPERATION OF ELECTRICALLY DRIVEN LOAD Russian patent published in 2011 - IPC F01D15/00 F01D15/08 H02P9/00 H02J3/38 H02P1/26 

FIELD: electricity.

SUBSTANCE: method and system to start and operate an electrically driven load, for instance, a compressor (1) or a pump, by means of energy supply from a mechanical drive, for instance, a turbine or an internal combustion engine, by means of which the load is mechanically connected to the first electric machine, and the mechanical drive is mechanically connected to the second electric machine. Method includes the following actions: 1) electric connection of the first electric machine to the second electric machine is carried out during stop, or when the first and/or the second machine have low speed; 2) in the acceleration phase the speed-up of the first electric machine is carried out by the speed-up of the second electric machine with the mechanical drive; and 3) if the first electric machine achieved the pre-determined speed of rotation, it is synchronised with the local grid and is connected to this grid.

EFFECT: reduced cost, lower weight and volume of the whole system, reduced complexity of operation and design.

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