Static VAR generator with non-linear frequency dependent dynamic

Details Static VAR generator with non-linear frequency dependent dynamic Static VAR generator with non-linear frequency dependent dynamic

1978-04-03

1980-05-20

Shoop, William M.

Electricity: power supply or regulation systems

Remote sensing

H02J 318

Patent

active

042041511

ABSTRACT:
A control circuit for a static VAR generator measures appropriate circuit current and voltage during consecutive half cycles. This information is utilized to determine the firing angles of the VAR generator thyristors for providing compensating current to the line for keeping line current in phase with line voltage and for balancing the line currents in three phase electrical systems. A non-linear frequency dependent dynamic gain adjuster is provided in the control system of the VAR generator to automatically and rapidly reduce the gain of the VAR generator circuit as the frequency of load disturbance exceeds the VAR generator frequency response range.

REFERENCES:
patent: 3936727 (1976-02-01), Kelly, Jr. et al.
patent: 3940687 (1976-02-01), Akhundov
patent: 3987359 (1976-10-01), Thompson
patent: 3999117 (1976-12-01), Gyugyi et al.
patent: 4068159 (1978-01-01), Gyugyi

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