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 Motor drive circuit

Details
Inventors: Pernyeszi, Joseph;
Assignee: General Electronics Applications, Inc. (Scotts Valley, CA)
Primary Examiner: Patel; Rajnikant B.
Assistant Examiner:
Attorney, Agent or Firm: Townsend and Townsend and Crew LLP

A phase converter for converting single-phase power to three-phase power, wherein the single-phase power is provided at a first and a second single-phase power terminal and the three-phase power is provided to a first, a second and a third three-phase power terminal, the phase converter comprising: a first power transfer means for coupling the first single-phase power terminal to the first three-phase power terminal; a second power transfer means for coupling the second single-phase power terminal to the second three-phase power terminal; and an inverter coupled to receive power from the first and second single-phase power terminals. The inverter provides power to the third three-phase power terminal and a neutral output by phase shifting its input power by ninety degrees.

DETAILED DESCRIPTION An improved phase converter for converting single-phase power to three-phase power is provided by one embodiment of the present invention.
Single-phase power is provided at a first and a second single-phase power terminal and the three-phase power is provided to a first, a second and a third three-phase power terminal, the phase converter comprising: a first power transfer means for coupling the first single-phase power terminal to the first three-phase power terminal; a second power transfer means for coupling the second single-phase power terminal to the second three-phase power terminal; and an inverter coupled to receive power from the first and second single-phase power terminals.
The inverter provides power to the third three-phase power terminal and a neutral output by phase shifting its input power by ninety degrees.



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