Variable frequency static motor drive

Electricity: motive power systems – Motor-reversing – Armature or primary circuit control

Patent

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Details

318230, 318231, 363 96, H02P 540

Patent

active

040805549

ABSTRACT:
A variable speed static controlled induction motor is voltage regulated under variable frequency by controlling the inverters under constant pulse width while maintaining a constant volt-hertz ratio through the feedback voltage control loop.

REFERENCES:
patent: 3467904 (1969-09-01), Studtmann et al.
patent: 3491282 (1970-01-01), Heinrich et al.
patent: 3560834 (1971-02-01), Studtmann
patent: 3584279 (1971-06-01), Kranthamer et al.

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