WIND-DRIVEN ELECTRIC PLANT Russian patent published in 2006 - IPC F03D9/02 

FIELD: wind power engineering.

SUBSTANCE: invention can be used I self-contained power supply systems employing renewable types of energy, and also to supply submersible electric pumps and other power consumers. Proposed wind-driven electric plant contains differential gear train, windmill, windmill shaft speed sensor, dc machine, voltage inverter, storage battery, field regulator, field switch unit and electric load. Electric load is connected to voltage inverter which is connected with dc machine driven by windmill. Storage battery serves as energy accumulator. At wind blowing, dc machine generates energy which is supplied to electric load through voltage inverter, and simultaneously storage battery is being charged. At weak or no wind, field switch unit precludes discharge of storage battery through field winding of dc machine.

EFFECT: enlarged operating capabilities of plant, increased efficiency, improved reliability and quality of electric energy.