A power filter resonant frequency modulation network for coupling between a load and a variable voltage direct current power source which is subjected to superposition of alternating current thereon at various frequencies and at various voltage levels, the filter including first and second series inductor arrangements in the positive and negative buses between the power supply and the load, with capacitive elements in parallel between the two buses. Each series inductor arrangement includes a first inductor in series with a frequency and voltage responsive inductive load device, which is a second inductor having a tertiary winding loaded with a coil wound about the core of a saturable reactor. The firing angles of the reactors are directly proportional to voltage and inversely proportional to voltage to provide a phase staggered change of inductance in the network. At higher frequencies and lower voltages, the loading reactors are out of saturation and present a very high impedance to the circuit, the effect resulting in a broadening of the normal high Q peaking within a range of frequencies at resonance.
D. Cronin, "Power Filter Resonant Frequency Modulation Network," U.S. Patents, Jan 1988.
Mechanical and Aerospace Engineering
Patent Application Number
© 1988 Triad Microsystems Inc, All rights reserved.
01 Jan 1988