Electric power conversion systems – Frequency conversion without intermediate conversion to d.c. – By semiconductor converter
Patent
1986-02-14
1987-02-10
Salce, Patrick R.
Electric power conversion systems
Frequency conversion without intermediate conversion to d.c.
By semiconductor converter
363 34, 363161, H02M 522
Patent
active
046427511
ABSTRACT:
The invention resides in providing bilateral switches between the respective phase lines of an AC input source and a common phase line of an AC output to form a phase line group of said bilateral switches on each AC output line; in fact, controlling the bilateral switches of each group so as to generate with AC input lines a DC link voltage with respect to the associated AC output line, and secondly in controlling the bilateral switches in such group to modulate such DC link voltage in relation to a desired AC voltage for such associated AC output line, each of said groups being operated with a corresponding phase shift to provide a corresponding phase shift between the respective output phase lines.
REFERENCES:
patent: 3470447 (1969-09-01), Gyugyi et al.
patent: 3493838 (1970-02-01), Gyugyi et al.
patent: 4468725 (1984-08-01), Venturini
Lorin C. M.
Salce Patrick R.
Sterrett Jeffrey
Westinghouse Electric Corp.
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