Electricity: motive power systems – Induction motor systems – Primary circuit control
Patent
1982-05-21
1984-01-03
Truhe, J. V.
Electricity: motive power systems
Induction motor systems
Primary circuit control
318723, 363 37, H02P 534, H02M 545
Patent
active
044244754
ABSTRACT:
Apparatus for controlling a static AC/AC thyristor converter which supplies power to a synchronous rotating machine (7) at a variable frequency. The converter comprises a "machine" bridge (PM) and a "mains" bridge (PRA, PRB) connected to each other by a first conductor (9) and by a second conductor (10), together with an auxiliary connection (8) which connects the neutral point of the synchronous machine to a point (11) at the "mains" bridge end via which point current can be returned to a transformer which supplies power to said "mains" bridge. The control apparatus comprises means for controlling the "mains" bridge in such a way that the sum of the currents IA+IB of said first conductor (9) and of said second conductor (10) interconnecting the "machine" and "mains" bridges are equal to an average reference current.
REFERENCES:
patent: 3919609 (1975-11-01), Klautschek et al.
patent: 4188659 (1980-02-01), Cailloux
patent: 4240020 (1980-12-01), Okuyama et al.
patent: 4267498 (1981-05-01), Torok
patent: 4282570 (1981-08-01), Kurosawa et al.
CGEE Alsthom
Keane Partick
Truhe J. V.
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