Electricity: motive power systems – Induction motor systems – Primary circuit control
Patent
1979-12-17
1981-11-10
Truhe, J. V.
Electricity: motive power systems
Induction motor systems
Primary circuit control
318768, 363 10, 363159, H02P 736, H02M 522
Patent
active
043000770
ABSTRACT:
This disclosure is concerned with a motor technique for generating speeds that are fractions of synchronous speeds, through novel time-staggered selected half-cycle energization of a plurality of magnetic poles by a controlled switching sequence, generating such a fractional motor speed that would otherwise have to be produced by a much larger number of magnetic poles.
REFERENCES:
patent: 3307094 (1967-02-01), Ogle
patent: 3581185 (1971-05-01), Hermes et al.
patent: 3991353 (1976-11-01), Katz et al.
PCT/SE79/00030-2/13/79-Wihk et al., vol. 96, No. 1, 1976 of Elec. Engr. in Japan-"Direct Freq. Conv. Using Triac's"-by C. Kamiyanagi et al., pp. 72-79.
Katz Leonhard
Ormord Lawrence A.
Astro Dynamics, Inc.
Moose Richard M.
Truhe J. V.
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