ELECTRICAL ENERGY TRANSFORMATION APPARATUS

• US 20100148903A1
• Filed: 12/12/2008
• Published: 06/17/2010
• Est. Priority Date: 12/12/2008
• Status: Abandoned Application

• Current Assignee: General Electric Company
• Original Assignee: General Electric Company
• Inventors: Yin, Weijun, Lin, Wendy Wen-Ling, Wei, Xiaolan, Perrillat-Amede, Denis, Katcha, Jason Stuart, Kniajanski, Sergei
• Application Number:
  US12/333,601
• Publication Number:
  US 20100148903A1
• Time in Patent Office: Days
• US Class Current: 336/90
• CPC Class Codes: H01F 27/323 Insulation between winding turns, between winding layers
• CPC Class Codes: H01F 41/122 Insulating between turns or between winding layers
• CPC Class Codes: H02M 7/217 using semiconductor devices only

Abstract

In one aspect, the present invention provides a high voltage-high frequency electrical energy transformation apparatus comprising a frequency inverter capable of converting 60 Hz electrical energy into 40-100 KHz electrical energy; and a voltage transformer. The voltage transformer comprises a transformer housing; at least one soft magnetic core; a low voltage primary winding and a high voltage secondary winding; and a solid insulating material comprising polydicyclopentadiene. The solid insulating material is in contact with the high voltage secondary winding.

Claims

15. A high voltage-high frequency electrical energy transformation apparatus comprising:

(a) a frequency inverter comprising an IGBT based high frequency inverter capable of converting 60 Hz electrical energy into 40-100 KHz electrical energy; and

(b) a voltage transformer comprising

a transformer housing;

at least one soft magnet core comprising a ferrite material;

a low voltage primary winding;

a high voltage secondary winding comprising a copper conductor;

a solid insulating material comprising polydicyclopentadiene;

and wherein the solid insulating material is in contact with the high voltage secondary winding.

1. A high voltage-high frequency electrical energy transformation apparatus comprising:

(a) a frequency inverter capable of converting 60 Hz electrical energy into 40-100 KHz electrical energy; and

(b) a voltage transformer comprising

a transformer housing;

at least one soft magnetic core;

a low voltage primary winding and a high voltage secondary winding;

a solid insulating material comprising polydicyclopentadiene;

and wherein the solid insulating material is in contact with the high voltage secondary winding.

2. The apparatus according to claim 1, wherein the solid insulating material is in contact with the primary windings.

3. The apparatus according to claim 1, wherein the insulating material comprising polydicyclopentadiene is prepared by ring opening metathesis polymerization.

4. The apparatus according to claim 1, wherein the insulating material comprising polydicyclopentadiene is a cured resin.

5. The apparatus according to claim 4, wherein said cured resin is prepared from a polymerizable formulation comprising dicyclopentadiene and a ring opening metathesis polymerization catalyst.

6. The apparatus according to claim 5, wherein the catalyst is at least one selected from bis(tricyclohexylphosphine)benzylidine ruthenium (IV) chloride, 1,3-bis(2,4,6-trimethylphenyl)-2-imidazolidinylidene)dichloro(phenylmethylene) (tricyclohexylphosphine)ruthenium, 1,3-bis(2,4,6-trimethylphenyl)-2-imidazolidinylidene)dichloro(phenylmethylene) (di-3-bromopyridine)ruthenium, tricyclohexylphosphine[1,3-bis(2,4,6-trimethylphenyl)-4,5-dihydroimidazol-2-ylidene][(phenylthio)methylene]ruthenium(II)dichloride, or 1,3-bis-(2,4,6-trimethylphenyl)-2-imidazolidinylidene)dichloro(o-isopropoxyphenyl methylene)ruthenium.

7. The apparatus according to claim 1, wherein the insulating material further comprises nanoparticulate silica in an amount corresponding to from about 1 weight percent to about 20 weight percent based on the total weight of the solid insulating material.

8. The apparatus according to claim 1, wherein the insulating material comprising polydicyclopentadiene has an AC breakdown strength of at least about 40 kV/mm rms at 1 mm thickness in accordance with ASTM D149 method

9. The apparatus according to claim 1, wherein the insulating material comprising polydicyclopentadiene has a DC breakdown strength of about 60 kV/mm at 5 mm thickness in accordance with ASTM D3755 method.

10. The apparatus according to claim 1, wherein the insulating material comprising polydicyclopentadiene has a dimension change of less than about 1% in transformer oil for about 5000 hours at a temperature of greater than about 100°

C.

11. The apparatus according to claim 1, wherein the insulating material comprising polydicyclopentadiene has a tensile modulus change of less than about 1% as measured in accordance with ASTM D3039 test method in transformer oil for about 5000 hours at a temperature of greater than about 100°

C.

12. The apparatus according to claim 1, wherein the insulation material separates the low voltage primary windings and the high voltage secondary windings to the soft magnetic core.

13. The apparatus according to claim 1, wherein the insulation material separates between the windings of the low voltage primary windings and the high voltage secondary windings.

14. The apparatus according to claim 1, wherein the inverter is an IGBT based high frequency inverter.

16. The apparatus according to claim 15, which is comprised within a CT scanner apparatus.

17. The apparatus according to claim 15, which is comprised within a Mamography apparatus.

18. The apparatus according to claim 15, wherein the insulating material comprising polydicyclopentadiene is prepared by ring opening metathesis polymerization.

19. The apparatus according to claim 15, wherein the insulating material comprising polydicyclopentadiene is a cured resin.

20. The apparatus according to claim 19, wherein said cured resin is prepared from a polymerizable formulation comprising dicyclopentadiene and a ring opening metathesis polymerization catalyst.

21. The apparatus according to claim 19, wherein the insulating material further comprises nanoparticulate silica in an amount corresponding to from about 1 weight percent to about 20 weight percent based on the total weight of the solid insulating material.

22. The apparatus according to claim 15, wherein the insulating material comprising polydicyclopentadiene has a tensile modulus change of less than about 1% as measured in accordance with ASTM D3039 test method in transformer oil for about 5000 hours at a temperature of greater than about 100°

C.

21-1. The apparatus according to claim 15, wherein the insulating material comprising polydicyclopentadiene has a dimension change of less than about 1% in transformer oil for about 5000 hours at a temperature of greater than about 100°

C.

23. A CT scanner comprising a high voltage-high frequency electrical energy transformation apparatus, said apparatus comprising:

(a) a frequency inverter capable of converting 60 Hz electrical energy into 40-600 KHz electrical energy; and

(b) a voltage transformer comprising

an oil-filled transformer housing,

at least one soft magnet core comprising a ferrite material;

a low voltage primary winding;

a high voltage secondary winding;

a solid insulating material comprising polydicyclopentadiene;

and wherein the solid insulating material is in contact with the high voltage secondary winding.