Uninterruptible power supply with a variable speed drive...

Details Uninterruptible power supply with a variable speed drive... Uninterruptible power supply with a variable speed drive...

H - Electricity

02

M

318/110, 322/6.2

H02M 5/40 (2006.01) G05B 13/02 (2006.01) H02J 9/06 (2006.01) H02P 11/06 (2006.01)

Patent

CA 2015642

UNINTERRUPTIBLE POWER SUPPLY WITH A VARIABLE SPEED DRIVE DRIVING A INDUCTION MOTOR/GENERATOR ABSTRACT OF THE DISCLOSURE An uninterruptible power source is disclosed and claimed which includes an induction motor/generator assembly and a continuously on line variable speed drive connected to inductively accelerate the motor/generator assembly to near rated speed. When the motor/generator assembly reaches rated speed, the motor/generator is switched to synchronous operation, while still under control of the variable speed drive. The variable speed drive includes slip compensation to maintain the motor at rated speed. The variable speed drive operates in response to a utility power signal and to a standby power signal. When the utility power signal fails, operation of the drive is maintained, without interruption, by the standby power.

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