Method and apparatus for improved efficiency in a pulse-width-mo

Details Method and apparatus for improved efficiency in a pulse-width-mo Method and apparatus for improved efficiency in a pulse-width-mo

1992-02-14

1994-02-15

Shoop, Jr., William M.

Electricity: motive power systems

Induction motor systems

Primary circuit control

318811, H02P 540

Patent

active

052870510

ABSTRACT:
A scheme for optimizing the efficiency of an AC motor drive operated in a pulse-width-modulated mode provides that the modulation frequency of the power furnished to the motor is a function of commanded motor torque and is higher at lower torque requirements than at higher torque requirements.

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patent: 4651067 (1987-03-01), Ito et al.
patent: 4926104 (1990-05-01), King et al.
patent: 4967135 (1990-10-01), Ashikaga et al.
patent: 5038092 (1991-08-01), Asano et al.

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