Electrical inverter-rectifier circuit and inductor apparatus therefor

Claim 2

An inverter-rectifier circuit comprising: inverter switch means for converting a direct voltage applied to input to an alternating pulse voltage at an output; transformer means, said transformer means having primary winding means connected to said output, and a plurality of secondary windings each having a positive polarity end, said secondary windings being wound one atop the other and electrically insulated from one another, and each of said secondary windings comprising substantially the same number of turns of wire and each being formed in one layer with the positive polarity end of each secondary winding at the same end of the layer; a core of magnetic material forming a closed magnetic path surrounding a window opening and having first and second opposed core legs on opposite sides of said window opening; and wherein said primary winding means comprises a first primary winding and a second primary winding electrically connected in parallel, said first winding being wound about said first leg of said core and said second winding being wound about said second leg of said core; and wherein each of said plurality of secondary windings comprises further first and second half windings connected electrically in series voltage additive relationship with said first half winding of each secondary winding being located on said first leg of said core and said second half winding of each secondary winding being located on said second leg of said core a plurality of rectifier means corresponding in number to said plurality of secondary windings, each of said rectifier means being connected to a corresponding one of said plurality of secondary windings for providing at its output a DC voltage; and summing circuit means connecting the outputs of each of said rectifier means electrically in series for summing up in additive polarity the individual output voltages thereof.

Claim 3

The invention as defined in claim 1 wherein said summing means comprises a plurality of capacitors corresponding in number to said rectifying means, said capacitors being electrically connected in series, and means coupling each respective output of said plurality of rectifier means across a corresponding one of said series connected capacitors.

Claim 4

The invention as defined in claim 2 further comprising: a plurality of choke inductor means and means connecting each respective one of said choke means electrically in series with a corresponding output of a rectifier means.

Claim 5

The invention as defined in claim 3 wherein said plurality of choke means comprises a single magnetic core, and a plurality of substantially identical single layer windings wound one atop the other upon said core.

Claim 6

The invention as defined in claim 4 further comprising: a non-linear delay inductor having a magnetically saturable core with a substantially rectangular hysteresis characteristic for providing, initially, a high electrical inductive imPedance to current flow and for providing a predetermined short delay time thereafter a low inductive impedance to current flow; electrical resistor means having a low electrical resistance characteristic; said resistor means being connected electrically in parallel with said non-linear delay inductor to form an inductor-resistor network; and circuit means connecting said inductor-resistor network electrically in series between said primary winding means of said transformer means and said inverter switch means output.

Claim 7

The invention as defined in claim 3 further comprising: a plurality of pairs of series connected capacitors, said plurality of pairs corresponding in number to said plurality of capacitors of said summing means, means connecting each respective pair of series connected capacitors across a corresponding one of said summing capacitors; and means placing each respective series juncture of said series connected pairs of capacitors electrically in common with the corresponding juncture of each half winding of the particular secondary winding of said transformer associated with said corresponding capacitor of said summing means.

Claim 8

An inverter-rectifier circuit comprising: inverter switch means for converting a direct voltage applied to an input to a series of pulses at an output; transformer means, said transformer means comprising a core of magnetic material defining a closed magnetic path surrounding a window opening, said core including at least first and second legs in opposed position on opposite sides of said window opening; a first coil form of windings mounted on said first core leg and a second coil form of windings mounted on said second leg, said first coil form comprising: a single layer primary winding located most immediate said core leg and a plurality of N substantially identical secondary windings each of which comprises a single layer located one atop the other and insulated electrically from one another; said plurality of N secondary windings having their positive polarity ends facing one direction and their negative polarity ends facing another direction, with said windings being sequentially designated by its distance from the respective core leg; said second coil form comprising: a single layer priming winding located most immediate said core and substantially identical in construction with said first primary winding; and a second plurality of N substantially identical windings and substantially identical in construction to said first plurality and wound one atop the other in a single layer and electrically insulated from one another; each of said N windings having their positive polarity ends facing one direction and their negative polarity ends facing another direction with said windings being sequentially designated by its distance from the respective core leg; said windings of said first plurality corresponding to said windings of said second polarity with the same sequential designation; electrical circuit means connecting said first and second primary windings electrically in parallel across said inverter switch means output; a plurality of individual electrical lead means for connecting each respective positive polarity end of said second plurality of N windings to a negative polarity end of a respective corresponding one of said first plurality of N windings to place each pair of windings in series additive phase; a plurality of N bridge rectifier means each having an input and output; electrical circuit means for connecting each respective one of said bridge rectifier means input in circuit between the negative polarity end and the positive polarity end of a corresponding one of series connected pair of secondary windings; and summing circuit means for connecting the outputs of each of said bridge rectifier means in series for summing up in additive polarity the individual output voltages thereof; said circuit means comprising: a first Plurality of N capacitors, corresponding to said N bridge rectifying means, said capacitors connected electrically in series.

Claim 9

An inverter-rectifier circuit comprising: inverter switch means for converting a direct voltage applied to an input to a series of pulses at an output; transformer means, said transformer means comprising a core of magnetic material defining a closed magnetic path surrounding a window opening, said core including at least first and second legs in opposed position on opposite sides of said window opening; a first coil form of windings mounted on said first core leg and a second coil form of windings mounted on said second leg, said first coil form comprising: a single layer primary winding located most immediate said core leg and a plurality of N substantially identical secondary windings each of which comprises a single layer located one atop the other and insulated electrically from one another; said plurality of N secondary windings having their positive polarity ends facing one direction and their negative polarity ends facing another direction, with said windings being sequentially designated by its distance from the respective core leg; said second coil form comprising: a single layer priming winding located most immediate said core and substantially identical in construction with said first primary winding; and a second plurality of N substantially identical windings and substantially identical in construction to said first plurality and wound one atop the other in a single layer and electrically insulated from one another; each of said N windings having their positive polarity ends facing one direction and their negative polarity ends facing another direction with said windings being sequentially designated by its distance from the respective core leg; said windings of said first plurality corresponding to said windings of said second polarity with the same sequential designation; electrical circuit means connecting said first and second primary windings electrically in parallel across said inverter switch means output; a plurality of individual electrical lead means for connecting each respective positive polarity end of said second plurality of N windings to a negative polarity end of a respective corresponding one of said first plurality of N windings to place each pair of windings in series additive phase; a plurality of N bridge rectifier means each having an input and output; electrical circuit means for connecting each respective one of said bridge rectifier means input in circuit between the negative polarity end and the positive polarity end of a corresponding one of series connected pair of secondary windings; and summing circuit means for connecting the outputs of each of said bridge rectifier means in series for summing up in additive polarity the individual output voltages thereof; said circuit means comprising: a first Plurality of N capacitors, corresponding to said N bridge rectifying means, said capacitors connected electrically in series.

Claim 10

The invention as defined in claim 7 further comprising: a plurality of N pairs of series connected capacitor means, said means electrically connecting each respective pair of series connected capacitors across a corresponding one of said first plurality of N capacitors; and a plurality of electrical circuit means for individually placing each respective juncture of each said pair of series connected capacitor means electrically in common with a corresponding one of said electrical lead means of a corresponding one of said secondary windings, which secondary winding corresponds to said one of said bridge rectifier means and one of said first capacitor means across which said respective capacitor pair is connected.

Claim 11

The invention as defined in claim 8 further comprising: a plurality of N pairs of inductors, each pair of which is associated with a corresponding one of said plurality of bridge rectifiers; means connecting a first one of each said pairs of inductors electrically in series circuit with one output terminal of said corresponding bridge rectifier and means connecting a second one of each said pairs of inductors electrically in series with the other output terminal of said corresponding bridge rectifier circuit.

Claim 12

The invention as defined in claim 7 further comprising: a non-linear delay inductor having a magnetically saturable core with a substantially rectangular hysteresis characteristic for providing, initially, a high electrical inductive impedance to current flow and for providing a predetermined short delay time thereafter a low inductive impedance to current flow; electrical resistor means having a low electrical resistance characteristic; said resistor means being connected electrically in parallel with said non-linear delay inductor to form an inductor-resistor network; and circuit means connecting said inductor-resistor network electrically in series with said inverter switch means output.

Claim 13

The invention as defined in claim 7 wherein: each of said N bridge rectifier means includes a positive polarity output terminal and a negative polarity output terminal, and wherein said plurality of N series connected capacitors of said summing means includes a plurality of N + 1 capacitor input terminals, consecutively designated, which comprises a first terminal in circuit with a first one of said N capacitors and a (N + 1)st terminal in circuit with the Nth one of said capacitors at the ends of said series connection, and a remaining plurality of N - 1 individual terminals in circuit with each series connection juncture of said N capacitors, and further comprising: a multisection inductor comprising: a core of magnetic material to provide a magnetic flux path, said core including a first air gap and a second air gap substantially identical to said first located at two spaced locations along said core to provide a high magnetic reluctance in said flux path; a first coil form located on said core over said first air gap, said coil form comprising a plurality of N individual substantially identical single layer windings one atop the other and electrically isolated from one another with the positive polarity ends of each winding facing in one direction and the negative polarity ends of said windings facing the opposite direction, with the first numbered one of said plurality of windings located most proximate said core sequentially numbered to said Nth numbered one of said windings comprising the outermost winding most remote from said core; a second coil form located on said core over said second air gap, said second coil form comprising a second plurality of N individual substantially identical single layer windings one atop the other and electrically isolated from one another with the positive polarity ends of said windings facing one direction and the negative polarity ends of said windings facing the opposite direction, with the first numbered one of said second plurality of windings located most proximate said core sequentially numbered to said Nth numbered one of said second plurality of windings comprising the outermost winding most remote from said core, each of said N individual windings in said first coil form being substantially identical with each of the N individual windings of said second coil form; a first plurality of N - 1 individual first electrical conductor means, each respective one of said plurality of first electrical conductor means for connecting together electrically in common a corresponding one of said negative polarity end of one of said windings on said first coil form and a corresponding positive polarity end on one of said windings in said second coil form, said positive and negative polarity ends of said second coil form and first coil form corresponding as follows: Positive Polarity End Corresponding Negative Conductor of Windings of Second Polarity End of Windings Means Coil Form of First Coil Form . . . None corresponding Winding No. 1 1st Winding No. 1 Winding No. 2 . . . . . . . . . (N-1)st Winding No. N-1 Winding No. N Winding No. N None corresponding means connecting each respective one of said positive polarity ends of said first through N inductors of said first coil form in series circuit with said positive polarity output of a corresponding one of said first through N bridge rectifier means; means connecting each respective one of said negative polarity ends of said first through N inductors of said second coil form in series circuit with said negative polarity output terminal of a corresponding one of said first through N bridge rectifier means; means connecting the negative polarity end of said first winding of said first coil form to said first capacitor input terminal; means connecting the positive polarity end of said Nth winding of said second coil form in circuit with said (N + 1)st capacitor terminal; and means connecting each of said N - 1 remaining capacitor terminals in circuit with a corresponding one of said first plurality of N - 1 individual first electrical conductor means.

Claim 14

The invention as defined in claim 9 further comprising: a non-linear delay inductor having a magnetically saturable core with a substantially rectangular hysteresis characteristic for providing, initially, a high electrical inductive impedance to current flow and for providing a predetermined short delay time thereafter a low inductive impedance to current flow; electrical resistor means having a low electrical resistance characteristic; said resistor means being connected electrically in parallel with said non-linear delay inductor to form an inductor-resistor network; and circuit means connecting said inductor-resistor network electrically in series with said inverter switch means output.

Claim 15

The invention as defined in claim 11 further comprising: a non-linear delay inductor having a magnetically saturable core with a substantially rectangular hysteresis characteristic for providing, initially, a high electrical inductive impedance to current flow and for providing a predetermined short delay time thereafter a low inductive impedance to current flow; electrical resistor means having a low electrical resistance characteristic; said resistor means being connected electrically in parallel with said non-linear dealy inductor to form an inductor-resistor network; and circuit means connecting said inductor-resistor network electrically in series with said inverter switch means output.

Claim 16

An inverter-rEctifier circuit comprising: inverter switch means for converting a direct voltage applied to an input to a series of pulses at an output; transformer means, said transformer means including: a core of magnetic material defining a closed magnetic path surrounding a window opening, said core including at least first and second legs in opposed position on opposite sides of said window opening; a first primary winding located on said first core leg and a second primary winding located on said second core leg; means connecting said first and second primary winding in parallel across the output of said inverter switch means; a plurality of substantially identical secondary output windings; a like plurality of bridge rectifier means; a like plurality of substantially identical first capacitor means; each said bridge rectifier means having its input connected to the output of a corresponding one of said secondary windings and having its output connected across a corresponding one of said capacitors for rectifying voltages supplied to said respective rectifier input by said corresponding secondary winding and via said rectifier output charging said corresponding first capacitor means; circuit means electrically connecting said capacitors in electrical series circuit for summing the plurality of individual voltages; and wherein each of said secondary windings comprise first and second winding portions substantially identical to one another connected together in additive phase portion and each portion of which forms a single layer coil, said first portion of each said winding located on said first core leg and said second portion of each said winding located on said second core leg, and with each succeeding one of said plurality of secondary windings being wound over and oriented in phase with the preceding one of said secondary windings on said respective first and second core legs.

Claim 17

An inverter-rEctifier circuit comprising: inverter switch means for converting a direct voltage applied to an input to a series of pulses at an output; transformer means, said transformer means including: a core of magnetic material defining a closed magnetic path surrounding a window opening, said core including at least first and second legs in opposed position on opposite sides of said window opening; a first primary winding located on said first core leg and a second primary winding located on said second core leg; means connecting said first and second primary winding in parallel across the output of said inverter switch means; a plurality of substantially identical secondary output windings; a like plurality of bridge rectifier means; a like plurality of substantially identical first capacitor means; each said bridge rectifier means having its input connected to the output of a corresponding one of said secondary windings and having its output connected across a corresponding one of said capacitors for rectifying voltages supplied to said respective rectifier input by said corresponding secondary winding and via said rectifier output charging said corresponding first capacitor means; circuit means electrically connecting said capacitors in electrical series circuit for summing the plurality of individual voltages; and wherein each of said secondary windings comprise first and second winding portions substantially identical to one another connected together in additive phase portion and each portion of which forms a single layer coil, said first portion of each said winding located on said first core leg and said second portion of each said winding located on said second core leg, and with each succeeding one of said plurality of secondary windings being wound over and oriented in phase with the preceding one of said secondary windings on said respective first and second core legs.

Claim 18

The invention as defined in claim 14 further comprising: a plurality of pairs of series-connected capacitor means, each pair being connected across a corresponding one of said first capacitors, and means electrically connecting in common the juncture of each pair of series-connected capacitors with the juncture between said first and second portions of the corresponding secondary winding associated with said first capacitor.

Claim 19

A multisection inductor comprising: a core of magnetic material to provide a magnetic flux path, said core including a first air gap and a second air gap substantially identical to said first located at two spaced locations along said core to provide a high magnetic reluctance in said flux path; a first coil form located on said core over said first air gap, said coil form comprising a plurality of N individual substantially identical single layer windings one atop the other and electrically isolated from one another with the positive polarity ends of each winding facing in one direction and the negative polarity ends of said windings facing the opposite direction, with the first numbered one of said plurality of windings located most proximate said core sequentially numbered to said Nth numbered one of said windings comprising the outermost winding most remote from said core; a second coil form located on said core over said second air gap, said second coil form comprising a second plurality of N individual substantially identical single layer windings one atop the other and electrically isolated from one another with the positive polarity ends of said windings facing one direction and the negative polarity ends of said winding facing the opposite direction, with the first numbered one of said second plurality of windings located most proximate said core sequentially numbered to said Nth numbered one of said second plurality of windings comprising the outermost winding most remote from said core, each of said N individual windings in said first coil form being substantially identical with each of the N individual windings of said second coil form; said plurality, N, comprising an integer whole number equal to or greater than 2; a first plurality of N-1 individual first electrical conductor means, each respective one of said plurality of first electrical conductor means for connecting together electrically in common a corresponding one of said negative polarity end of one of said windings on said first coil form and a corresponding positive polarity end on one of said windings in said second coil form, said positive and negative polarity ends of said second coil form and first coil form corresponding as follows: Positive Polarity End of Windings of Second Coil Form Corresponding Negative Polarity End of Windings of First Coil Form None corresponding Winding No. 1 Winding No. 1 Winding No. 2 . . . . . . Winding No. N-1 Winding No. N Winding No. N None corresponding

Claim 20

A multisection inductor comprising: a core of magnetic material to provide a magnetic flux path, said core including a first air gap and a second air gap substantially identical to said first located at two spaced locations along said core to provide a high magnetic reluctance in said flux path; a first coil form located on said core over said first air gap, said coil form comprising a plurality of N individual substantially identical single layer windings one atop the other and electrically isolated from one another with the positive polarity ends of each winding facing in one direction and the negative polarity ends of said windings facing the opposite direction, with the first numbered one of said plurality of windings located most proximate said core sequentially numbered to said Nth numbered one of said windings comprising the outermost winding most remote from said core; a second coil form located on said core over said second air gap, said second coil form comprising a second plurality of N individual substantially identical single layer windings one atop the other and electrically isolated from one another with the positive polarity ends of said windings facing one direction and the negative polarity ends of said winding facing the opposite direction, with the first numbered one of said second plurality of windings located most proximate said core sequentially numbered to said Nth numbered one of said second plurality of windings comprising the outermost winding most remote from said core, each of said N individual windings in said first coil form being substantially identical with each of the N individual windings of said second coil form; said plurality, N, comprising an integer whole number equal to or greater than 2; a first plurality of N-1 individual first electrical conductor means, each respective one of said plurality of first electrical conductor means for connecting together electrically in common a corresponding one of said negative polarity end of one of said windings on said first coil form and a corresponding positive polarity end on one of said windings in said second coil form, said positive and negative polarity ends of said second coil form and first coil form corresponding as follows: Positive Polarity End of Windings of Second Coil Form Corresponding Negative Polarity End of Windings of First Coil Form None corresponding Winding No. 1 Winding No. 1 Winding No. 2 . . . . . . Winding No. N-1 Winding No. N Winding No. N None corresponding

Claim 21

The invention as defined in claim 16 further comprising: a second plurality of N electrical conductors, each respective one of said conductors being individually connected to a corresponding one of the positive polarity ends of each of said N windings in said first coil form; a third plurality of N individual electrical conductors, each respective one of said conductors being connected to a corresponding one of said negative polarity ends of said N windings in said second coil form; a fourth plurality of (N-1) electrical conductor individually, each respective one of said conductors being connected electrically in common with a corresponding one of said first plurality of electrical conductor means; an additional individual electrical conductor means connected to the negative polarity end of said first winding of said first coil form; an individual electrical conductor means connected to the positive polarity end of said Nth winding of said second coil form; and electrical conductor means connected to the negative polarity end of said first winding of said first coil form.

Claim 22

The invention as defined in claim 17 wherein N equals 4.

Claim 23

The invention as defined in claim 16 wherein said core comprises a rectangular O-shaped geometry having two sets of opposed legs and wherein said first air gap is located centered in one leg of said core and wherein said second air gap is located in an opposed leg of said core.