Uninterruptible power supply with low leakage current

Details Uninterruptible power supply with low leakage current Uninterruptible power supply with low leakage current

2007-04-19

2009-11-24

Patel, Rajnikant B (Department: 2838)

Electrical transmission or interconnection systems

Plural supply circuits or sources

Substitute or emergency source

C307S087000, C363S037000

Reexamination Certificate

active

07622823

ABSTRACT:
An uninterruptible power supply having a controllable leakage current is disclosed. The leakage current is controlled by adjusting a switching speed (i.e., dV/dt rate) of switches in the output inverter (i.e. DC-AC converter stage). Leakage current can be reduced by reducing the switching speed (dV/dt rate) of the output inverter switches. In one embodiment, leakage current is held constant or moderated as output power decreases by reducing the switching speed (responsive to leakage current) as output power decreases. The switching speed can be adjusted by adjusting the gate resistance or gate voltage. Increasing the gate resistance or decreasing the gate voltage will cause a reduction in the switching speed, and increase in leakage current. Conversely, reducing the gate resistance, or decreasing the gate voltage will cause an increase in switching speed, and increase in leakage current. The present invention is applicable to any uninterruptible power supply having output inverter switches.

REFERENCES:
patent: 5977814 (1999-11-01), Ishii
patent: 6266260 (2001-07-01), Zahrte et al.
patent: 6879500 (2005-04-01), Liu et al.

Affiliated with

Also associated with

Rating

Uninterruptible power supply with low leakage current does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Uninterruptible power supply with low leakage current, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Uninterruptible power supply with low leakage current will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-4137090