Method and Circuit for Using Polarized Device in AC Applications

• US 20070273335A1
• Filed: 05/23/2007
• Published: 11/29/2007
• Est. Priority Date: 01/04/2000
• Status: Active Grant

• Current Assignee: William Duff
• Original Assignee: William Duff
• Inventors: Duff, William
• Granted Patent: US 7,521,900 B2
• Time in Patent Office: Days
• US Class Current: 320/166
• CPC Class Codes: H01G 11/08 Structural combinations, e.g. assembly or connection, of hybrid or EDL capacitors with other electric components, at least one hybrid or EDL capacitor being the main component
• CPC Class Codes: H02H 7/16 for capacitors for synchronous capacitors H02H7/06
• CPC Class Codes: H02J 7/345 using capacitors as storage or buffering devices
• CPC Class Codes: Y02B 40/00 Technologies aiming at improving the efficiency of home appliances, e.g. induction cooking or efficient technologies for refrigerators, freezers or dish washers
• CPC Class Codes: Y02E 60/10 Energy storage using batteries
• CPC Class Codes: Y02E 60/13 Energy storage using capacitors

Abstract

Polarized electric charge storage devices economically provide high available capacitance. The present invention directly employs polarized electrical charge storage (PECS) devices such as polarized capacitors or electrochemical batteries in general AC applications with a novel circuit topology. In one embodiment, an anti-series configuration of first and second PECS devices are used within an AC network for enhancing operation of the AC network. At least one DC source is provided for maintaining the PECS devices forwardly biased while they are subjected to an AC signal. The AC signal, which drives an AC load, is applied to the anti-series devices. The devices are sufficiently biased by the at least one DC voltage source so that they remain forwardly biased while coupling the AC signal.

Claims

1-20. -20. (canceled)

21. An assembly comprising:

a container;

a first polarized capacitor and a second polarized capacitor;

a first conductor coupled to the negative post of said first polarized capacitor and the negative post of said second polarized capacitor;

an AC source coupled to the positive post of said first polarized capacitor;

an AC load coupled to the positive post of said second polarized capacitor;

biasing circuitry coupled to the positive post of said first polarized capacitor and the positive post of said second polarized capacitor, said biasing circuitry configured such that said first polarized capacitor and said second polarized capacitor are each suitably and forwardly biased with DC voltages such that a net positive potential is continuously impressed across each of said first polarized capacitor and second polarized capacitor of a magnitude sufficient to compensate for the worst case negative AC swing;

a first conducting plate coupled to said first polarized capacitor and said second polarized capacitor;

a first non-conducting strip coupled to said first conducting plate and said container such that said first conducting plate, said first polarized capacitor, and said second polarized capacitor are suspended in said container; and

a dielectric substance arranged in said container such that said dielectric substance covers said first conducting plate.

22. The assembly of claim 21 wherein:

said first polarized capacitor and said second polarized capacitors are large can capacitors each having an integrated base bolt; and

said first polarized capacitor and said second polarized capacitors are each coupled to said first conducting strip via said integrated base bolt.

23. The assembly of claim 21 wherein:

said first conducting plate and said first conductor are at essentially the same potential.

24. The assembly of claim 21 wherein:

said dielectric substance is a liquid oil.

25. The assembly of claim 24 wherein:

said liquid oil covers said first polarized capacitor and said second polarized capacitor.

26. The assembly of claim 21 further comprising:

an integrated heat exchanger coupled to said container.

27. The assembly of claim 21 further comprising:

a third polarized capacitor and a fourth polarized capacitor;

a second conductor coupled to the negative post of said third polarized capacitor and the negative post of said fourth polarized capacitor;

biasing circuitry coupled to the positive post of said third polarized capacitor and said the positive post of said fourth polarized capacitor, said biasing circuitry configured such that said third polarized capacitor and said fourth polarized capacitor are each suitably and forwardly biased with DC voltages such that a net positive potential is continuously impressed across each of said third polarized capacitor and fourth polarized capacitor of a magnitude sufficient to compensate for the worst case negative AC swing;

a second conducting plate coupled to said third polarized capacitor and said fourth polarized capacitor;

a second non-conducting strip coupled to said second conducting plate and said container arranged such that said second conducting plate, said third polarized capacitor and said fourth polarized capacitor are suspended in said container;

wherein said dielectric substance is arranged in said container such that said dielectric substance covers said second conducting plate.

28. A method comprising:

coupling, using a first conductor, the negative post of a first polarized capacitor to the negative post of a second polarized capacitor;

coupling an AC source to the positive post of said first polarized capacitor;

coupling an AC load coupled to the positive post of said second polarized capacitor;

coupling biasing circuitry to the positive post of said first polarized capacitor and the positive post of said second polarized capacitor;

configuring said biasing circuitry such that said first polarized capacitor and said second polarized capacitor are each suitably and forwardly biased with DC voltages such that a net positive potential is continuously impressed across each of said first polarized capacitor and second polarized capacitor of a magnitude sufficient to compensate for the worst case negative AC swing;

coupling said first polarized capacitor and said second polarized capacitor to a first conducting plate;

coupling a first non-conducting strip to said first conducting plate;

coupling said first non-conducting strip to a container such that said first conducting plate, said first polarized capacitor, and said second polarized capacitor are suspended in said container; and

filling said container with a dielectric substance in said container such that said dielectric substance covers said first conducting plate.

29. The method of claim 28 wherein:

said first polarized capacitor and said second polarized capacitors are large can capacitors each having an integrated base bolt;

said method further comprising coupling said first polarized capacitor and said second polarized capacitors to said first conducting strip using said integrated base bolts.

30. The method of claim 28 wherein:

said first conducting plate and said first conductor are at essentially the same potential.

31. The method of claim 28 wherein:

said dielectric substance is a liquid oil.

32. The method of claim 31 further comprising:

filling said container such that said liquid oil covers said first polarized capacitor and said second polarized capacitor.

33. The method of claim 28 further comprising:

coupling an integrated heat exchanger to said container.