Electrical transmission or interconnection systems – Plural supply circuits or sources – Substitute or emergency source
Patent
1981-08-17
1982-12-28
Griffin, Donald A.
Electrical transmission or interconnection systems
Plural supply circuits or sources
Substitute or emergency source
H02J 900
Patent
active
043663907
ABSTRACT:
In an emergency power unit for an alternating current consumer, there are supplied a connection (9) for an alternating current generator (10), a battery (5), which can be charged by rectified current from the alternating current generator (10), a controllable bidirectional converter unit (6), which is located between the said battery and a consumer connection (2), an alternating voltage regulator (13), which stabilizes the alternating voltage on the alternating voltage side (3) of the bidirectional converter unit (6) by means of pulse-width modulation, and a battery voltage regulator (12). The alternating current generator (10) can be connected, in parallel, to the alternating voltage side of the bidirectional converter unit (6), and a current-limiting resistor (8) is located between the alternating voltage side (3) of the bidirectional converter unit (6) and the alternating current generator connection (9). In order to achieve galvanic isolation between the bidirectional converter unit and the alternating current generator, and between the consumer (1) and the alternating voltage generator (10), the current-limiting resistor is designed as a leakage-reactance transformer (8') which has three windings. Of these, one winding (31) is connected directly to the alternating voltage side (3) of the bidirectional converter unit, the second winding (32) is connected to the alternating current generator connections (9, 9a) and the third winding is connected to the consumer connections (2, 2a). The leakage-reactance transformer effects not only galvanic isolation, but at the same time effects the required current-limitation as a consequence of its leakage-inductance.
REFERENCES:
patent: 3609386 (1971-09-01), Patlach
patent: 3801795 (1974-04-01), Zajac et al.
patent: 4044268 (1977-08-01), Hammel et al.
patent: 4122359 (1978-10-01), Breikss
patent: 4143283 (1979-03-01), Graf et al.
patent: 4181842 (1980-01-01), Elias et al.
Easton Wayne B.
Griffin Donald A.
LandOfFree
Emergency power unit does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Emergency power unit, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Emergency power unit will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1338797