Electrical transmission or interconnection systems – Plural supply circuits or sources – Plural generators
Patent
1985-03-01
1987-03-10
Shoop, Jr., William M.
Electrical transmission or interconnection systems
Plural supply circuits or sources
Plural generators
307 18, 322 10, 299 1, 299 12, 361 47, H02K 1934, E21C 3504
Patent
active
046492887
ABSTRACT:
A power supply system for supplying electrical energy at an I.S. level to an electrical machine e.g. of a mineral mining machine, comprises two low speed generators A and B mechanically coupled together at coupling 3 and rotatable by means of a drive shaft 2, the mechanical input at the drive shaft 2 producing a separate, isolated electrical output at each of the generators A and B, the output from a first generator A being fed to an I.S. barrier 10, whereby an I.S. power supply is made available to power a first circuit 4, the output from the second generator B being fed to a non-I.S. supply circuit 8, and an I.S. coupling device 7 between the I.S. circuit 4 and the non-I.S. circuit 8, to achieve electrical and physical segregation of the circuits 4 and 8.
REFERENCES:
patent: 3683255 (1972-08-01), Schroeder
patent: 3723750 (1973-03-01), Dixon et al.
patent: 3967180 (1976-06-01), Weber et al.
patent: 4066992 (1978-01-01), Buller et al.
patent: 4080642 (1978-03-01), Stolarczyk
patent: 4087698 (1978-05-01), Myers
patent: 4270800 (1981-06-01), Barry
Barry Michael J.
Beech Alan E.
Senior Adrian
Dresser U.K. Limited
Ip Shik Luen Paul
Shoop Jr. William M.
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