DEVICE TO ENSURE PARALLEL OPERATION OF AUTONOMOUS INVERTERS OF SOLAR POWER PLANTS Russian patent published in 2013 - IPC G05F5/04 

FIELD: electricity.

SUBSTANCE: device to ensure parallel operation of autonomous inverters of solar power plants comprises inverters 13, 14 and single-phase transformers, secondary windings of which are connected in series for a common load, at the same time the device comprises two control systems 25 and 31, a source of control signals 37, a transformer-rectifier unit 38, and a power transformer 1 is a transformer with a rotary magnetic field with two primary windings 2 and 3, each of which has a middle point, and three secondary windings 10, 11, 12 shifted relative to each other by 120°, each of control systems comprises a sawtooth voltage generator 26, 32, a voltage sensor 28, 34, a pulse shaper 27, 33, a summator of signals 30, 36 and a pulse distributor 29, 35.

EFFECT: provision of parallel operation of single-phase inverters for a three-phase load.

3 dwg