Join
today

Boliven PRO is more than just patent search

  • Build and save lists using the powerful Lists feature
  • Analyze and download your search results
  • Share patent search results with your clients

Patents »

US5343080: Harmonic cancellation system

Share

Filing Information

Inventor(s) John B. Kammeter ·
Assignee(s) Power Distribution, Inc. ·
Attorney/Agent(s) Bacon & Thomas ·
Primary Examiner Jeffrey A. Gaffin ·
Application Number US8196813
Filing date 02/14/1994
Issue date 08/30/1994
Predicted expiration date 11/15/2011
U.S. Classifications 307/105  · 336/5  ·
International Classifications H02J 301  ·
Kind CodeA
International Classifications 30717;85;105 ·
Related U.S. Application DataThis application is a continuation of application Ser. No. 07/992,061, filed Dec. 16, 1992 now abandoned, which is a continuation-in-part of U.S. application Ser. No. 07/792,893, filed Nov. 15, 1991, now U.S. Pat. No. 5,206,539 issued Apr. 27, 1993.
27 Claims, No Drawings


Abstract

A harmonic current filtering transformer includes a three-phase input winding and at least two wye-connected three-phase output windings. The output windings are phase shifted relative to each other by an amount which causes harmonic currents generated by a non-linear load to magnetically cancel in the transformer core.

Independent Claims | See all claims (27)

  1. 1. A harmonic cancellation system, comprising:an input power source;at least one transformer core;a three-phase primary winding inductively coupled with said core and connected to said power source;at least two three-phase wye-connected output windings inductively coupled with said core, wherein said output windings are phase-shifted relative to each other to cause magnetic flux vectors generated in said core by harmonic currents present in the output windings to add to zero for respective orders of selected harmonic currents and thereby prevent the selected harmonic currents present in the output windings from being induced in said input windings; anda load connected to said output windings.
  2. 18. A harmonic cancellation system, comprising:an input power source;at least one transformer core;a three-phase primary winding inductively coupled with said core and connected to said power source;at least two three-phase wye-connected output windings inductively coupled with said core, wherein said output windings are phase-shifted relative to each other to cause magnetic flux vectors generated in said core by harmonic currents present in the output windings to partially cancel for respective orders of the selected harmonic currents to thereby prevent the selected harmonic currents present in the output windings from being induced in said input windings; anda load connected to said output windings.

References Cited

U.S. Patent Documents

Document NumberAssigneesInventorsIssue/Pub Date
US1719892 BBC BROWN BOVERI & CIE Kubler Jul 1929
US2025584 GEN ELECTRIC Fitz Gerald Dec 1935
US2307527 WESTINGHOUSE ELECTRIC & MFG CO Maslin et al. Jan 1943
US2470598 WESTINGHOUSE ELECTRIC CORP Biebesheimer May 1949
US2482489 Kaiser May 1949
US2790131 EINARD NYYSSONEN Nyyssonen Apr 1957
US3295050 INDUCTOTHERM CORP Rowan, Jr. et al. Dec 1966
US3379961 Kobayashi et al. Apr 1968
US3500166 LORAIN PROD CORP Mesenhimer et al. Mar 1970
US3555291 GEN ELECTRIC Dewey Jan 1971
US3601690 GEN DYNAMICS CORP Judson et al. Aug 1971
US3671901 JACQUES FRANCOIS MARIE JOSEPH Lys Jun 1972
US3711760 WESTINGHOUSE ELECTRIC CORP Kaiser Jan 1973
US3742251 WESTINGHOUSE ELECTRIC CORP Thompson et al. Jun 1973
US3792286 RELIANCE ELECTRIC CO Meier Feb 1974
US3796890 WESTINGHOUSE ELECTRIC CORP Thompson et al. Mar 1974
US3859542 INDUCTOTHERM CORP Kennedy Jan 1975
US3913005 Cook Oct 1975
US3916246 VARIAN ASSOCIATES Preist Oct 1975
US3970914 Siemens Aktiengesellschaft Salzmann et al. Jul 1976
US3991359 Westinghouse Electric Corporation Thompson et al. Nov 1976
US4074343 Agence Nationale de Valorisation de la Recherche (ANVAR) Chaussy et al. Feb 1978
US4106089 The Garrett Corporation Fettinger Aug 1978
US4112403 Associated Electrical Industries Limited Friedlander Sep 1978
US4209757 Siemens Aktiengesellschaft Becker Jun 1980
US4305033 Liebert Corporation Powell Dec 1981
US4384214 Integrated Switching Supplies, Inc. Crick et al. May 1983
US4513240 Westinghouse Electric Corp. Putman Apr 1985
US4513243 Westinghouse Electric Corp. Novak Apr 1985
US4517471 Anton Piller GmbH & Co. KG Sachs May 1985
US4531085 Power Distribution Inc. Mesenhimer Jul 1985
US4544877 Liebert Corporation Powell Oct 1985
US4567423 BBC Brown, Boveri & Company, Limited Dobsa et al. Jan 1986
US4651265 Westinghouse Electric Corp. Stacey et al. Mar 1987
US4678297 Canon Kabushiki Kaisha Stein et al. Jul 1987
US4684875 Liebert Corporation Powell Aug 1987
US4689735 Associated Electrical Industries Limited Young Aug 1987
US4736090 Agfa-Gevaert N.V. De Broeck et al. Apr 1988
US4779181 Almond Instruments Company, Inc. Traver et al. Oct 1988
US4812669 Mitsubishi Denki Kabushiki Kaisha Takeda et al. Mar 1989
US4858100 Kabushiki Kaisha Toshiba Tatara Aug 1989
US4862059 Nishimu Electronics Industries Co., Ltd. Tominaga et al. Aug 1989
US4890213 Kabushiki Kaisha Toshiba Seki Dec 1989
US4893069 Nishimu Electronics Industries Co., Ltd. Harada et al. Jan 1990
US4922124 Kabushiki Kaisha Toshiba Seki et al. May 1990
US4939486 Asea Brown Boveri AB Bergdahl et al. Jul 1990
US4953071 International Fuel Cells, Inc. Lipman Aug 1990
US4964012 Kitagawa Industries Co., Ltd. Kitagawa Oct 1990
US5003277 Mitsubishi Denki Kabushiki Kaisha Sokai et al. Mar 1991
US5063487 The United States of America as represented by the Secrectary of the Navy Johnson et al. Nov 1991
US5070441 ASHLEY JAMES R Ashley Dec 1991
US5107410 Group Dekko International Marsh et al. Apr 1992
US5166597 Electric Power Research Institute Larsen et al. Nov 1992
US5172009 Regents of the University of Minnesota Mohan Dec 1992
US5206539 Power Distribution, Inc. Kammeter Apr 1993
US5224029 NEWMAN JR ROBERT C Newman, Jr. Jun 1993
US5235503 Asea Brown Boveri Ltd. Stemmler et al. Aug 1993

Foreign Patent Documents

Document NumberAssigneesInventorsIssue/Pub Date
JP54125434HITACHI LTDSep 1979
SU771820GORSKIJ SELSKOKHOZ IOct 1980
SU920990KISHINEVSK POLT INSTApr 1982
GB112829BRITISH ELECTRIC TRANSFORMER CJan 1918
GB495370SIEMENS AGAug 1937
GB474209BRITISH THOMSON HOUSTON CO LTDOct 1937
GB725290GEN ELECTRICMar 1955
GB964118GEN ELECTRIC CO LTDJul 1964

Other Publications

R. H. Lee, Power Quality, "Eliminating Harmonic Currents Using Transformers," Sep./Oct., 1991, pp. 33-37, Power Quality.
R. H. Lee, Power Quality, "Eliminating Harmonic Currents Using Transformers," Oct. 1989 Proceedings, Power Quality.
IBM Specifications, "Input Power Specifications," IBM 1990, 1991.
R. H. Lee, "Line Current Harmonics Effects on Transformers," Jul. 18, 1991, Teledyne Crittenden.
A. F. Puchstein et al., Alternating Current Machines, 1948, New York, Wiley & Sons.
P. Wood, Switching Power Converters, 1981, New York, Van Nostrand Reinhold Co.
R. G. Hoft, Principles of Inverter Circuits, 1981, New York, Wiley & Son.
Teledyne Specifications, "Shielded Isolation Harmonic Canceller".
K. Marsh, "Poly-Phase Power Sources Switching Power Supply Office Equipment," Jul. 17, 1991, Group Dekko.
Power Distribution specifications "Powerpak AK 9000/4 Harmonic Cancellation," Sep. 1, 1991.
B. D. Bedford and R. G. Hoft, Principles of Inverter Circuits, 1964, New York, Wiley & Sons.
I. K. Dortort "Phase Shifting of Harmonics in AC Circuits of Rectifiers," IEEE, Nov./Dec. 1968.
H. Winograd and J. B. Rice, "Conversion of Electric Power," Standard Handbook for Electrical Engineers, McGraw-Hill, New York, pp. 12-2 to 12-39.
"Compensation of Static Power Converters," IEEE Guide for Harmonic Control and Reactive, pp. 35-44.
Ordean Kiltie, Design Shortcuts & Procedures for Electronics Power Transformers & Inductors, pp. 55-64.
J. C. Read, The Calculation of Rectifier and Inverter Performance Characteristics, IEE Journal, vol. 92, Pt. II (1945).
W. Tucker, Laboratory Investigations of a Nine-Phase Zigzag-Connected Power Transformer for Electrical System Harmonic Current Reduction, Feb. 1986.
L. Walker, 10 MTW GTO Converter for Battery Peaking Service, 1988 IEEE.
J. W. A. Wilson, Double Bridge Inverters with Magnetic Coupling--Part 1: Voltage Waveforms, IAS '76 Annual.
J. W. A. Wilson, Double Bridge Inverters with Magnetic Coupling--Part 2: Current Waveforms, IAS '76.
"USA Standard Practices and Requirements for Semiconductor Power Rectifiers," IEEE 1968.
N. Chackan, "Nine-Phase Transformer Harmonic Voltage Contribution on Various Electrical System Buses," May 18, 1985, PA.
M. Williams, "System Level Reduction of Line Current Harmonics Caused by Capacitor Input Rectifiers in 3-Phase Systems," (Preliminary Draft) Dec. 15, 1981.
Navy Specification 17221C, 1988.
Navy Specification 17221B, 1986.
Navy Specification 15108D, 1988.
Letter to Mr. C. Y. Lu describing "Teledyne Crittenden ZZ-N1 Zig-Zag transformer" with attachments.
Standard Handbook for Electrical Engineers, 11th Ed., Transformers pp. 10-11, FIGS. 10-15 and 10-16.
IEEE Standard Dictionary of Electrical and Electronics Terms, 3rd Ed., 1984, p. 1508.
Ling, Engineering Drawing PT-1429 for 23 KW Power Trans. for 3 MF AC Supply DMAC-3B.
Othmar Marti and Harold Winowgrad, "Mercury Arc Power Rectifiers," 1930, p. 153; McGraw-Hill.
Westinghouse Electric Corp., Proposed Revision to Specification MIL-T-15108C, Preliminary Report, Oct. 31, 1986, PA.
Alex Levran and Robert H. Lee, handout from course or lecture at UCLA "Power Electronic Circuit: Theory and Practice," Jan. 29-Feb. 2, year unknown.
Dept. of Electrical Engineering at MIT, "Magnetic Circuits and Transformers," pp. 564-586 and 656-672, date unknown.
D. G. Fink and H. W. Beaty, Standard Handbook for Electrical Engineers, pp. 10-11, McGraw-Hill Book Company, 11th Ed.
The Institute of Electrical and Electronics Engineers, Inc., The New IEEE Standard Dictionary of Electrical and Electronics Terms, 1993, New York.
Blume et al., Transformer Engineering, 1938, pp. 171, 213-217, New York, John Wiley & Son Inc.
Ordean Kiltie, Design Shortcuts & Procedures for Electronics Power Transformers & Inductors, 1975, Ohio, Harris Publishing Company.
Johannes Schaefer, Rectifier Circuits: Theory and Design, 1965, pp. 58-67, New York; John Wiley and Sons, Inc.
Intertec Communications, Inc., Power Quality '89 USA Official Proceedings of the First International Power Quality Conference, 1989, pp. 324-337, California.

Patent Family

The current document is not in a family.