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USOO678818OB2 (12) United States Patent (10) Patent No.: US 6,788,180 B2 Haugs et al. (45) Date of Patent: Sep. 7, 2004

(54) CONTROLLABLE TRANSFORMER 4.202,031. A 5/1980 Hesler et al...... 363/97 4,210,859 A 7/1980 Meretsky et al...... 323/44 R (75) Inventors: Espen Haugs, Sperrebotn (NO); Frank 5.936,503 A * 8/1999 Holmgren et al...... 336/60 Strand, Moss (NO) 6,232,865 B1 5/2001 Zinders et al...... 336/212 (73) Assignee: Magtech AS, Moss (NO) FOREIGN PATENT DOCUMENTS NO 146219 5/1982 (*) Notice: Subject to any disclaimer, the term of this NO 20002652 5/2000 patent is extended or adjusted under 35 WO WO 94/11891 5/1994 U.S.C. 154(b) by 0 days. WO WO 97/34210 9/1997 WO WO 98/31024 7/1998 (21) Appl. No.: 10/300,752 WO WO 01/90835 A1 11/2001 OTHER PUBLICATIONS (22) Filed: Nov. 21, 2002 International Search Report for PCT/NO 02/00434, Mar. 4, (65) Prior Publication Data 2003; 4 pages. Copy of Norwegian Search Report 20015689, Jul.10, 2002. US 2003/0117251A1 Jun. 26, 2003 Copy of International Search Report PCT/NO 02/00435, Related U.S. Application Data mailing date Mar. 6, 2003. 60) Provisional application No. 60/633,136, filed on Nov. 27, Copy of International Preliminary Examination Report PCT/ 2001 pp. NO 02/00435, Mar. 16, 2004. (30) Foreign Application Priority Data * cited by examiner Nov. 21, 2001 (NO) ...... O15689 Primary Examiner Anh Mai (51) Int. Cl." ...... H01F 27/34 (74) Attorney, Agent, or Firm Testa, Hurwitz & Thibeault, (52) U.S. Cl...... 336/180; 336/180; 336/182 LLP (58) Field of Search ...... 336/212, 188, (57) ABSTRACT 336/170, 180-182,90, 92, 83, 60,59 A controllable transformer device comprising a body of a magnetic material, a primary winding wound round the body (56) References Cited about a first axis, a Secondary winding wound round the U.S. PATENT DOCUMENTS body about a Second axis at right angles to the first axis, and 2.284,406 A * 5/1942 D'Entremont a control Winding Wound the body about a third axis, 3,757.201 A 9/1973 Cornwell coincident with the second axis. The device can be 4,002.999 A * 1/1977 Hesler et al...... 331/113A employed to provide a frequency controlled power supply. 4.004,251 A 1/1977 Hesler et al...... 331/113 A 4,163,189 A 7/1979 Smutiny ...... 323/6 10 Claims, 38 Drawing Sheets

11 3883, 10 YZZZZZZZZZZZZZZZN ZZZZZZZZZZzESEEEEEEEE C A.zzzzzzzzzzzer t 2 2 NYZ 2 N N. ZZ4 I1 zXZ242Zzzzzzzzzzzzzzzzzzzzzzzzzzzzz27 &ztectatatazztetrattazzazzazzazzazzaN17Y U.S. Patent Sep. 7, 2004 Sheet 1 of 38 US 6,788,180 B2

U.S. Patent Sep. 7, 2004 Sheet 2 of 38 US 6,788,180 B2

2 |A2 4. 3 GOA4 Fig. 7b Fig. 7c

Fig. 7d Fig.le

iA Fig. If Fig. 1g U.S. Patent Sep. 7, 2004 Sheet 3 of 38 US 6,788,180 B2

U.S. Patent Sep. 7, 2004 Sheet 4 of 38 US 6,788,180 B2

U.S. Patent Sep. 7, 2004 Sheet 5 of 38 US 6,788,180 B2

PRIMARY

SECONDARY CONTROL Fig.4

Fig.5a

to... 4N 4N 8 Fig.5b Fig.5c Fig.5d U.S. Patent Sep. 7, 2004 Sheet 6 of 38 US 6,788,180 B2

1 Oer 80 A/m U.S. Patent Sep. 7, 2004 Sheet 7 of 38 US 6,788,180 B2

DIRECTION OF MAGNETSATION

DIRECTION OF

MAGNETSATION

DOMAN CHANGE U.S. Patent Sep. 7, 2004 Sheet 8 of 38 US 6,788,180 B2

U.S. Patent Sep. 7, 2004 Sheet 9 of 38 US 6,788,180 B2

Fig.6e U.S. Patent Sep. 7, 2004 Sheet 10 Of 38 US 6,788,180 B2

SWITCH

PRIMARY SECONDARY

Im MAGNETSATION CURRENT I. : CORE LOSSCURRENT Fig.6g U.S. Patent Sep. 7, 2004 Sheet 11 Of 38 US 6,788,180 B2

SATURATION

LINEAR

LOW MEDIUM HGH VERY HIGH MAGNETICFIELD INTENSITY HA-t/m) Fig.6h U.S. Patent Sep. 7, 2004 Sheet 12 of 38 US 6,788,180 B2

21, FMM1, I1

22, FMM1, I2

U.S. Patent Sep. 7, 2004 Sheet 13 Of 38 US 6,788,180 B2

U.S. Patent Sep. 7, 2004 Sheet 14 Of 38 US 6,788,180 B2

U.S. Patent Sep. 7, 2004 Sheet 15 Of 38 US 6,788,180 B2

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U.S. Patent Sep. 7, 2004 Sheet 17 Of 38 US 6,788,180 B2 W2 2.

U.S. Patent Sep. 7, 2004 Sheet 18 of 38 US 6,788,180 B2 10.11

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Fig. 74a

Fig. 74b 3re e. Fig. 74c U.S. Patent Sep. 7, 2004 Sheet 19 of 38 US 6,788,180 B2

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U.S. Patent Sep. 7, 2004 Sheet 20 Of 38 US 6,788,180 B2

U.S. Patent Sep. 7, 2004 Sheet 21 of 38 US 6,788,180 B2

U.S. Patent Sep. 7, 2004 Sheet 22 of 38 US 6,788,180 B2 16

Fig.22 6

U.S. Patent Sep. 7, 2004 Sheet 23 Of 38 US 6,788,180 B2

U.S. Patent Sep. 7, 2004 Sheet 25 Of 38 US 6,788,180 B2

U.S. Patent Sep. 7, 2004 Sheet 26 of 38 US 6,788,180 B2

U.S. Patent Sep. 7, 2004 Sheet 27 Of 38 US 6,788,180 B2

U.S. Patent Sep. 7, 2004 Sheet 28 Of 38 US 6,788,180 B2

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