Technical Papers, Patents etc.

See: Otto J. M. Smith Home page Which contains technical papers and pictures of custom and prototype installations. 123Phase has commercialized these and related products so that a purchaser can buy the motor and controller as a single unit. Our standard products are listed at: 123Phase Motors.
  1. NEW -- High-Efficiency Air-Conditioner on Single-Phase Electricity
  2. "Large Low-Cost Single-Phase Semi-hex® Motors" by Otto J.M. Smith, IEEE Transactions on Energy Conversion, Vol 14, No. 4, December 1999, pp 1353-1358.
  3. O.J.M.Smith "Large Low-Cost Single-Phase Semi-hex® Motors", abstract in IEEE Power Engineering Review, Vol. 18, No. 5, May 1998, page 53. http://www.ieee.org/power.
  4. Call for Discussions, IEEE PER, Vol.18, No.5, May 1998, page 47. http://www.ieee.org/power/authkit.htm, or email soc.pe@ieee.org.
  5. "High-Efficiency Single-Phase SEMIHEX® Motors", by Otto J.M. Smith, Electrical Machines and Power Systems, Vol. 26, No. 6, July 1998 pp 573-584.
  6. "Large Low-Cost Single-Phase Semihex® Motors", by Otto J.M. Smith, Paper No. MB2-5, 1997 IEEE International Electric Machines and Drives Conference, May 18-21, 1997, Milwaukee, Wisconsin, IEEE Catalog No. 97TH8282.
  7. "Single-Phase 40-HP Pump Motor", by Otto J.M. Smith, 52-nd Annual Regional Conference of ASAE (American Society of Agricultural Engineers) Paper No. PNW 97-102, Boise, Idaho, Sept.18-20, 1997.
  8. "Electric Motors: The Latest Innovations", by Bret Scaliter, editor, Irrigation Journal, Vol. 47, No. 4, May/June 1997, pp 8-9. http://www.irrigationjournal.com.
  9. "New Options allow farmers to convert from furrow irrigation to sprinklers, improve water quality", by Gerald Fleischman, IDAHO Currents, Vol. 15, Feb. 1998. Energy Division of the Idaho Department of Water Resources. pp 1 and 7. 1(800)334-7283.
  10. "Three-Phase Induction Motor with Single-Phase Power Supply", US Patent 4,792,740, issued 20 December 1988 to Otto J.M. Smith.
  11. "Three-Phase Motor Control", US Patent 5,300,870, issued 5 April 1994 to Otto J.M. Smith.
  12. "Three-Phase Motor Operated From a Single-Phase Power Supply and Phase Converter", US Patent 5,545,965, issued 13 August 1996 to Otto J.M. Smith.
  13. "Irrigation technology tops tour agenda", by Cindy Snyder, Magic Valley Ag Weekly, Twin Falls, Idaho, Saturday June 14, 1997.
  14. "Idaho Power, Chamber team up for ag tours", by Leandra Reuble, Magic Valley Ag Weekly, Twin Falls, Idaho, Saturday June 28, 1997.
  15. "High-Efficiency Large Single-Phase Adaptors and Motors", by Otto J.M. Smith IEEE Power Engineering Review, Vol.18, No.12, December, 1998 pp. 58-59.
  16. "A Novel Method of Operating a Single-Phase Motor with Three-Phase Motor Efficiency" by Ali Shaban and David B. Mar, Paper No. 2 in NAPS-5-C Proceedings of the 1993 Twenty-Fifth North American Power Symposium, Howard University, Washington, D.C. October 11, 1993.
  17. "A Low-Cost Single-Phase High-Efficiency Motor", by Ali Shaban and Jonathan Morris, Paper No. 5 in NAPS-4-C Proceedings of the 1994 Twenty-Sixth North American Power Symposium, Manhattan, Kansas, September 26-27, 1994.
  18. "Single-Phase High-Efficiency Motor, I. Comparison with Adjustable Speed Drive, II. Effect of Harmonics", by Ali Shaban and Jose A. Ramirez, 1995 Twenty Seventh North American Power Symposium, Bozeman, Montana, 3 October 1995.
  19. "Single-Phase Motor Starters", U.S. Patent by Otto J.M. Smith, issued 11 April 2000.
  20. "Circuitry Innovation for Three-Phase Motor Operation On Single-Phase Power", Applied Engineering In Agriculture (ASAE), Vol. 15, No 5, September 1999, pp 577-582, by O. J. M. Smith and Clinton C. Shock.
  21. "Single-Phase Motor Revolution", Banquet Address, Proceedings of the Thirty-first North American Power Symposium, pp 313-326, California Polytechnic State University, San Luis Obispo, California, October 10, 1999 by Otto J.M. Smith.
  22. "Control Switching System for the Smith Motor", Proceedings of the Thirty-first North American Power Symposium, pp 38-44, California Polytechnic State University, San Luis Obispo, California, October 10, 1999 by Thomas A. Santrach and Ali Shaban.
  23. "Motor Starter", U.S. Patent No. 6,025,693, issued 15 February 2000, to Otto J.M. Smith.
  24. "Control Switching System for the Smith Motor", by Thomas A. Santrach and Ali Shaban, Proceedings of 31-st North American Power Symposium 1999, California Polytechnic State University, San Luis Obispo, California October 11,1999, pp 38-44.
  25. "Steady-State Analysis of a Three-Phase Induction Motor with the Smith Connection", by Prof. Tze-Fun Chan and Prof. L. L. Lai, IEEE Power Engineering Review, Vol. 20, No. 10, October 2000, pp 45-46.
  26. "Single-Phase Motor Starters", U.S. Patent No. 6,049,188 issued 11 April 2000, to Otto J.M. Smith.
  27. "High-Efficiency Single-Phase Air Conditioner", California Energy Commission Report EISG No. P500-02-003F 15 February 2002, by Otto J.M. Smith. URL http://eisg.sdsu.edu/Approved-FARs.htm
  28. "Master Three-Phase Induction Motor with Satellite Three-Phase Motors Driven by a Single-Phase Supply", US Patent No. 6,356,041 B1 Issued 12 March 2002 to Otto J.M. Smith.
  29. "High-Efficiency Three-Phase Motors Connected to Single-Phase supplies", Electrical Manufacturing and Coil Winding Conference, at The EMCW-2002 Expo. Oct. 15, 2002, Session No. 08, by Phyllis Sterling Smith and Otto J. M. Smith, Cincinnati, Ohio.
  30. "Smith Phase-Able® Enabler® Motors", in Motor Technology E Source Drivepower Atlas, Section 7.5.5, Boulder, Colorado. 80301-2515, Tel. 1(720)548-5740.
  31. "Effects of Unbalanced Voltages on the performance of Polyphase Induction Motors", NEMA MG-1, 1993, Revision3, Section 14.35. "The currents at normal operating speed with unbalanced voltages will be greatly unbalanced in the order of approximately 6 to 10 times the voltage unbalance."
  32. "The Impact That Voltage and Frequency Variations Have on Motor Performance and Life" Austin H. Bonnett, EASA Education and Technology Consultant, EASA Convention 2003, Moscone Convention Center, San Francisco, Ca June 30, 2003. Electrical Apparatus Service Association (EASA), 1331 Baur Boulevard, St LOUIS, Mo. 63132. USA. 1(314)993-2220.

For the reader who wishes additional references:

  1. Smith, O.J.M.,"Three-Phase Induction Motor with Single-Phase Power Supply", US Patent No. 4,792,740, issued 20 December 1988.
  2. Smith, O.J.M.,"Three-Phase Motor Control", US Patent No. 5,300,870 issued 5 April 1994.
  3. Smith, O.J.M.,"Three-Phase Motor Operated From a Single-Phase Power Supply and Phasee Converter", US Patent No. 5,545,965, issued 13 August 1996.
  4. Smith, O.J.M.,"Motor Starter", US Patent No. 6,025,693 , issued 15 Feburuary 2000.
  5. Smith, O.J.M.,"Single Phase Motor Starters", US Patent No. 6,049,188, issued 11, April 2000.
  6. Smith, O.J.M.,"Three-Phase Motor Control", Peoples Republic Of China Patent No, 95105163.6 Cerificate No, 655335 issued Dec 8, 2000. In force April 18,1995 to April 18,2015
  7. Smith, O.J.M.,"Three-Phase Motor Control", Brazilian Patent No. PI9304033-4 to O.J.M. smith; Granted December 26,2000; Issue Published April 17,2001: Expiration October 13,2013
  8. Smith, O.J.M.,"Master Three-Phase Induction Motor with Satellite Three Phase Moters Drivwen by a Single-Phase Power Supply", US Patent No. 6,356,041 B1, issued March 12,2002.
  9. Smith, O.J.M.,"High-efficiency single-phase motor", IEEE Trans Energy Conversion, Vol. 7, pp 560-569,Sept 1992.
  10. Smith, O.J.M.,"LARGE LOW-COST SINGLE-PHASE SEMI-HEXTM MOTORS", Paper No. MB2-5, 1997 IEEE International Electric Machines and Drives Conference, May 18-21, 1997, Milwaukee, Wisconsin, IEEE Catalog No. 97 TH8282, pages MB-5.1 to MB-5.3.
  11. Smith, O.J.M.,"Single-Phase 40HP Pump Motor",Proc.52-nd Annual Regional Conference of ASAE/CSAE, Boise, Idaho, 18-20 Sept. 1997, ASAE Paper No. 97-102, St. Joseph, Mich.: ASAE.
  12. Smith, O.J.M.,"High-efficiency single-phase SEMI-HEXTM motors", Electric Machines and Power Systems, Vol. 26, No.6, June 1998,pp 573-584.
  13. Smith, O.J.M.,"High-efficiency large single-phase adapters and motors",IEEE Power Engineering Review, Vol.18, Dec.1998,pp58-59.
  14. Smith, O.J.M.,"Large Low-Cost Single-Phase Semi-HexTM motors",IEEE Transactions on Energy Conversion, Vol.14,No.4, December 1999, pp 1353-1358. Abstract in IEEE Power Engineering Review, Vol. 18, No.5,May 1998,page 53.
  15. O.J.M. Smith and Clinton C. Shock, "Circuitry Innovation For Three-Phase Motor Operation on Single-Phase Power",Applied Engineering in Agriculture,ASAE, Vol.15,No.5, September/October 1999, pp 573-582.
  16. Smith, O.J.M.,"Single-Phase Motor Revolution",Banquet Address, Proceedings of 31-st North American Power Symposium 1999, California Polytechnic State University, San Luis Obispo,California, October 11,1999,pp 313-320
  17. Smith, O.J.M.,"High-Efficiency Single-Phase Air Conditioner",California Energy Commission, Feasibility Analysis No P500-02-003F, Energy Innovationa Small Grant Program, February 2002.
  18. Smith, O.J.M.,"High-Efficiency Single-Phase Air Conditioner",Cal. Energy Comm, URL Sites:
    http://eisg.sdsu,edu/Far/99-39%20FAR%20Appendix%20A.pdf (Text called Appendix A.)
    http://eisg.sdsu,edu/Far/99-39%20Appendix%20C%20to%20FAR.pdf (Conclusion in Appendix C.)
    OR, http://eisg.sdsu,edu/Far Click on 99-39 FAR AppendixA.pdf also Click on 99-39 FAR Appendix C to FAR.pdf (CEC Feasibility Analysis No No P500-02-003F, February 2002).
  19. Smith, O.J.M. and Phyllis Sterling Smith,"High-Efficiency Three-Phase motors Connected to Single-Phase Supplies",Electrical Manufacturing & Coil Winding Association Conference, EMCW Expo 2002, October 15-17,2002, Session No.8, Cincinnati, Ohio, Oct. 15,2002, pp 99-106.

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