Inverter control system

Details Inverter control system Inverter control system

1984-11-20

1986-05-13

Pellinen, A. D.

Electrical transmission or interconnection systems

Plural supply circuits or sources

Substitute or emergency source

307 23, 307 24, 307 44, H02J 900

Patent

active

045889007

ABSTRACT:
An inverter control system for selectively operating on one of an inverter and backup power source to supply a load current comprises a PLL circuit which includes an integrating amplifier and is operative to synchronize the inverter operation with the voltage of the backup power source. When the power supply to the load is switched from the backup power source to the inverter, a.c. switches for the switching operation are controlled so that both the backup power source and inverter are active simultaneously for a certain period, and during the parallel operation the integrating amplifier is supplied with a reference signal which operates on the inverter to increase its shared load current.

REFERENCES:
patent: 4409533 (1983-10-01), Kawabata

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