Method and apparatus for improving performance of AC machines

Details Method and apparatus for improving performance of AC machines Method and apparatus for improving performance of AC machines

1989-07-17

1993-02-23

Smith, Jr., David

Electricity: motive power systems

Induction motor systems

Self-cascaded motor windings

318807, H02P 540

Patent

active

051893576

ABSTRACT:
A method and apparatus for improving the performance of polyphase AC machines. The polyphase AC machines are excited both with a fundamental frequency and with an odd harmonic of the fundamental frequency. The fundamental flux wave and the harmonic flux wave will travel at synchronous speed in the air gap. This facilitates redistributing the flux densities in the machine and thereby increasing the total flux per pole in the machine.

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