Electrical transmission or interconnection systems – Plural supply circuits or sources – Substitute or emergency source
Patent
1990-03-22
1991-10-15
Pellinen, A. D.
Electrical transmission or interconnection systems
Plural supply circuits or sources
Substitute or emergency source
307 64, H02J 710, H02J 906
Patent
active
050576976
ABSTRACT:
An uniterruptible power supply is provided that incorporates switching ciitry permitting a path for instantaneous DC backup power to be supplied to a voltage-declining primary power supply bus. Once the instantaneous transition is made, battery power is switched to a low impedance path to provide long-term battery power delivery to the bus. At a point where the backup batteries no longer supply useful power to a load, disabling circuitry disconnects the batteries from the load so that excessive draining of the batteries does not result in irreversible battey damage. The uninterruptible power supply of the invention further includes an automatic battery charging circuitry that seeks to maintain the power supply batteries at optimal charge level. To enable an operator to adequately assess battery charge condition, the invention provides battery test circuitry that causes a simulated load to appear at the power supply batteries. Visual representations are then made as to battery status.
REFERENCES:
patent: 4316097 (1982-02-01), Reynolds
patent: 4454452 (1984-06-01), Feldstein
patent: 4496168 (1985-01-01), D'Antonio et al.
patent: 4595872 (1986-06-01), Ball
patent: 4617473 (1986-10-01), Bingham
patent: 4644440 (1987-02-01), Kenney et al.
patent: 4754160 (1988-06-01), Ely
patent: 4788450 (1988-11-01), Wagner
patent: 4823019 (1989-04-01), Gronskog et al.
patent: 4841160 (1989-06-01), Yon et al.
Hammond Russell E.
Northup Robert L.
Shimp Alan G.
Elms Richard T.
Fendelman Harvey
Keough Thomas Glenn
Lipovsky Peter A.
Pellinen A. D.
LandOfFree
DC uninterrupted power supply having instantaneous switching fol does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with DC uninterrupted power supply having instantaneous switching fol, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and DC uninterrupted power supply having instantaneous switching fol will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-992812