High voltage inductive adder

• US 10,282,567 B2
• Filed: 05/07/2018
• Issued: 05/07/2019
• Est. Priority Date: 12/30/2016
• Status: Active Grant

• Current Assignee: EHT Ventures LLC
• Original Assignee: Eagle Harbor Technolologies, Inc.
• Inventors: Miller, Kenneth E., Prager, James R., Ziemba, Timothy M., Carscadden, John G., Bowman, Christopher, Slobodov, Ilia
• Primary Examiner(s): Cole, Brando S
• Application Number:
  US15/973,519
• Publication Number:
  US 20180253570A1
• Time in Patent Office: 365 Days
• Field of Search: 336 92-234
• CPC Class Codes: G06G 7/02 Details not covered by G06G7/04 - G06G7/10, e.g. monitoring, construction, maintenance
• CPC Class Codes: G06G 7/14 for addition or subtraction of vector quantities G06G7/22 ; computing the average by addition; differential amplifiers H03F3/45
• CPC Class Codes: H01F 27/2823 Wires H01F27/2866 takes precedence
• CPC Class Codes: H01F 27/2895 Windings disposed upon ring cores
• CPC Class Codes: H01F 30/06 characterised by the structure
• CPC Class Codes: H01F 30/16 Toroidal transformers
• CPC Class Codes: H03K 3/53 by the use of an energy-accumulating element discharged through the load by a switching device controlled by an external signal and not incorporating positive feedback H03K3/335 takes precedence

Abstract

A high voltage inductive adder is disclosed. In some embodiments, the high voltage inductive adder comprising a first adder circuit and a second adder circuit. The first adder circuit including a first source; a first switch electrically coupled with the first source; a first transformer core; and a first plurality of primary windings wound about the first transformer core and electrically coupled with the first switch. The second adder circuit including a second source; a second switch electrically coupled with the second source; a second transformer core; and a second plurality of primary windings wound about the second transformer core and electrically coupled with the second switch. The high voltage inductive adder comprising one or more secondary windings wound around both the first transformer core and the second transformer core and an output coupled with the plurality of secondary windings.

Claims

1. A high voltage inductive adder comprising:

a first circuit comprising;

a first source;

a first switch electrically coupled with the first source;

a first transformer core; and

a first plurality of primary windings wound about the first transformer core and electrically coupled with the first switch;

a second circuit comprising;

a second source;

a second switch electrically coupled with the second source;

a second transformer core; and

a second plurality of primary windings wound about the second transformer core and electrically coupled with the second switch;

a plurality of secondary windings wound around both the first transformer core and the second transformer core; and

an output coupled with the plurality of secondary windings

wherein the stray inductance of the first circuit is less than about 30 nH as measured from the primary side of the circuit, and wherein the stray inductance of the second circuit is less than about 30 nH as measured from the primary side of the circuit.

2. The high voltage inductive adder according to claim 1, wherein the high frequency inductive adder has a volume less than about 0.5 m³.

3. The high voltage inductive adder according to claim 1, wherein the high frequency inductive adder has a mass less than about 150 kg.

4. The high voltage inductive adder according to claim 1 wherein the high frequency inductive adder produces an output signal at the output having a voltage greater than about 20 kV.

5. The high voltage inductive adder according to claim 1, wherein the output signal has a rise time of less than about 40 ns.

6. The high voltage inductive adder according to claim 1, wherein the output signal has a variable or varying pulse repetition frequency and/or a variable or varying voltage and/or variable or varying pulse width.

7. The high voltage inductive adder according to claim 1, wherein the output signal has a variable pulse frequency that is proportional to an input pulse frequency.

8. The high voltage inductive adder according to claim 1, wherein the output signal has a variable pulse width that is proportional to an input pulse width.

9. The high voltage inductive adder according to claim 1, wherein the first plurality of primary windings and the second plurality of primary windings each comprise a conductive sheet.

10. The high voltage inductive adder according to claim 1, wherein the stray capacitance of the high voltage inductive adder as measured from the secondary is less than 500 pF.

11. The high voltage inductive adder according to claim 1, wherein the stray inductance of the circuit comprising the first source;

the first switch;

the first transformer core; and

the first plurality of primary windings is less than about 3 nH.

19. The high voltage inductive adder according to claim 1, wherein the first source and the second source comprise a single voltage source.

12. A high voltage inductive adder comprising:

a plurality of voltage sources;

a plurality of switches, each switch of the plurality of switches electrically coupled with a respective one of the plurality of voltage sources;

a plurality of transformer cores;

a plurality of primary windings, each primary winding of the plurality of primary windings are wound around a respective one of the plurality of transformer cores and each primary winding of the plurality of primary windings are electrically coupled with a respective one of the plurality of switches; and

a secondary winding wound around the plurality of transformer cores,

wherein the stray inductance of each circuit comprising at least one of the plurality of voltage sources;

at least one of the plurality of switches;

at least one of the plurality of transformer cores; and

at least one of the plurality of primary windings is less than about 30 nH.

13. The high voltage inductive adder according to claim 12, wherein the output signal has a rise time of less than about 40 ns.

14. The high voltage inductive adder according to claim 12, wherein the high frequency inductive adder produces an output signal at the output having a voltage greater than about 20 kV.

15. The high voltage inductive adder according to claim 12, wherein the output signal has a variable or varying pulse repetition frequency and/or a variable or varying voltage and/or variable or varying pulse width.

16. The high voltage inductive adder according to claim 12, wherein the plurality of primary windings comprises a conductive sheet.

17. The high voltage inductive adder according to claim 12, wherein the stray capacitance of the high voltage inductive adder as measured from the secondary is less than 500 pF.

18. The high voltage inductive adder according to claim 12, wherein the stray inductance of each circuit comprising at least one of the plurality of voltage sources;

at least one of the plurality of switches;

at least one of the plurality of transformer cores; and

at least one of the plurality of primary windings is less than about 3 nH.

20. The high voltage inductive adder according to claim 12, wherein the plurality of voltage sources comprise a single voltage source.