VAR Generator with current sensitive inductance break point

Details VAR Generator with current sensitive inductance break point VAR Generator with current sensitive inductance break point

1978-09-15

1980-07-01

Shoop, William M.

Electricity: power supply or regulation systems

Remote sensing

H02J 318

Patent

active

042108608

ABSTRACT:
The static VAR generator of the fixed capacitor switch-controlled inductor type is taught. The inductive element has a break point in its inductive characteristic. That is, below a certain predetermined current, the inductance is one value and above the latter current the inductance is another value. This has the effect of providing a reduced value of inductive reactance above a certain inductive current level thus making it possible to significantly increase the inductive current above its normal range with a small increase of the switch conduction interval. In one case a saturable iron core reactor is utilized to achieve the break point and in another case two inductive elements are provided--one of which is controlled by a switch which places the latter inductor into circuit arrangement with the first at the time that the current exceeds the predetermined value.

REFERENCES:
patent: 2606966 (1952-08-01), Pawley
patent: 3936727 (1976-02-01), Kelly, Jr. et al.
patent: 3999117 (1976-12-01), Gyugyi et al.
patent: 4104576 (1978-08-01), Frank

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