Automatic paralleling of AC power sources

Details Automatic paralleling of AC power sources Automatic paralleling of AC power sources

1987-07-31

1989-01-10

Shoop, Jr., William M.

Electrical transmission or interconnection systems

Plural supply circuits or sources

Connecting or disconnecting

307 57, 307 31, 361 90, 361 91, 361 92, H02J 300

Patent

active

047975709

ABSTRACT:
A system for effecting parallel operation of a pair of AC power sources includes a monitoring circuit for monitoring the difference voltage occurring between output voltages on corresponding phases of the power sources. A capacitor is connected to a charging circuit and to an output of the monitoring circuit. When the difference voltage occurring between the output voltages on corresponding phases of the power sources exceeds a predetermined threshold level, the capacitor is shorted. Paralleling of the power sources is inhibited when the capacitor voltage is below a second predetermined threshold level.

REFERENCES:
patent: 2862111 (1958-11-01), Richards, Jr. et al.
patent: 3069555 (1962-12-01), Kessler
patent: 3069556 (1962-12-01), Apfelbeck et al.
patent: 3210556 (1965-10-01), Billings
patent: 3444387 (1969-05-01), Billings et al.
patent: 3539820 (1970-11-01), Kessler
patent: 3588519 (1971-06-01), Luebrecht
patent: 3683199 (1972-08-01), Billings et al.
patent: 3749944 (1973-07-01), Luebrecht
patent: 3940664 (1976-02-01), Matsko
patent: 4144551 (1979-03-01), Smith et al.
patent: 4583004 (1986-04-01), Yearsin

Affiliated with

Also associated with

Rating

Automatic paralleling of AC power sources does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Automatic paralleling of AC power sources, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Automatic paralleling of AC power sources will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2109043