Electricity: motive power systems – Induction motor systems – Secondary circuit control
Patent
1985-05-10
1987-06-09
Shoop, Jr., William M.
Electricity: motive power systems
Induction motor systems
Secondary circuit control
318350, 318351, 318533, 318534, H02P 940
Patent
active
046722912
ABSTRACT:
This invention pertains to an electrical machine whose excitation is coordinated to the respective rpm in such a fashion that a desired characteristic of induced voltage or delivered output is produced. For that purpose at least one portion of the windings generating or controlling the working flux of the machine or a resistance wired in series before the machine is connected to a rectifier circuit, which is supplied, through a frequency-dependent impedance network, with an a.c. voltage of a frequency proportional to the machine rpm.
REFERENCES:
patent: 1694637 (1928-12-01), Bethenod
patent: 1763016 (1930-06-01), Stoller
patent: 1874716 (1932-08-01), Stoller
patent: 2254899 (1941-09-01), Laubenheimer et al.
patent: 2331960 (1943-10-01), Button
patent: 2489982 (1949-11-01), Schwarz
patent: 2559538 (1951-07-01), Jacobs
patent: 2711502 (1955-06-01), Alexanderson
patent: 2752549 (1956-06-01), Alexanderson
patent: 2793342 (1957-05-01), Rhyne
patent: 2802959 (1957-08-01), Powers
patent: 2821673 (1958-01-01), Shapiro
patent: 3379947 (1968-04-01), Lalonde
patent: 3518518 (1970-06-01), Ford et al.
patent: 4449079 (1984-05-01), Erdman
Ro Bentsu
Shoop Jr. William M.
Siemens Aktiengesellschaft
Ulbrich Volker R.
LandOfFree
Variable-speed electrical machine does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Variable-speed electrical machine, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Variable-speed electrical machine will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1831162