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US 4,460,954 AGranted
Ferroresonant power supply
AssigneeAllied Corporation
InventorsLeroy W. Aiken, Elmo E. Moyer
Life of this patent
Estimating the term…
Abstract
An improved ferroresonant transformer for a ferroresonant power supply, such as may be used for charging storage batteries, is provided by placing damping means, such as a strip of non-magnetic metallic material in an air gap of such a transformer, thereby eliminating the need for a damping resistor in the circuit of the resonant winding of such a transformer, thereby decreasing the size, weight, and cooling requirements of such a transformer and power supply, and allowing a greater electrical energy efficiency to be obtained.
Claims10
A ferroresonant power supply, comprising:
- input means for connection to a source of alternating current power;
- ferroresonant transformer means operably connected to said input means;
- rectifying means operably connected to said ferroresonant transformer means for rectifying an electrical output of said ferroresonant transformer;
- said ferroresonant transformer including a primary winding, a secondary winding and a resonating winding, said primary winding being operably connected to said input means, said secondary winding being operably connected to said rectifyng means, said resonant winding being connected to a resonant capacitor;
- said primary winding and said secondary winding and said resonant winding being mounted on a transformer core, said transformer core being provided with damping means for preventing electrical oscillation of said ferroresonant power supply;
- said transformer having an air gap interposed in a flux path thereof;
- said damping means being a strip of nonmagnetic metallic material interposed in said air gap.
4 more elements
A ferroresonant transformer, comprising:
- a laminated core;
- a primary winding, a secondary winding operably coupled to said secondary winding through said laminated core, and a resonant winding operably coupled to said primary winding and said secondary winding;
- a resonant capacitor being connected in a parallel arrangement with said resonating winding for adapting said resonant winding to a predetermined frequency, said frequency being a frequency of an input signal supplied to said primary winding;
- said resonant winding being adapted to regulate a voltage produced in said secondary winding by causing said laminated core to become saturated at an earlier point in a cycle of said input signal when said input signal supplied to said primary winding is increased;
- said ferroresonant transformer being susceptible to random oscillation;
- said laminated core being provided with damping means to prevent said random oscillation;
- said damping means being a strip of conductive material interposed in a gap defined in said laminated core and insulated from said laminated core by insulating means.
4 more elements
Dependencies are inferred from the claim text.