Control circuit of reactive power compensation apparatus

Details Control circuit of reactive power compensation apparatus Control circuit of reactive power compensation apparatus

1979-03-09

1981-03-10

Pellinen, A. D.

Electricity: power supply or regulation systems

For reactive power control

Using impedance

H02J 318

Patent

active

042557003

ABSTRACT:
A control circuit of a reactive power compensation apparatus which comprises a reactor and a capacitor are connected in parallel between a power source and a load to perform phase control of current passing through the reactor by a control switching element such as thyristor. The control circuit comprises a device for detecting instantaneous value of load current at a predetermined phase of the power voltage, a multiplier, a subtractor and a divider and a device for generating gate pulse in comparison of the output signal of the divider with the rating function generated in synchronizing to the peak phase of the power voltage.

REFERENCES:
patent: 3959719 (1976-05-01), Espelage
patent: 3968422 (1976-07-01), Waldmann
patent: 4041370 (1977-08-01), Schroder
patent: 4068159 (1978-01-01), Gyugyi
patent: 4172234 (1979-10-01), Gyugyi et al.

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