Method and apparatus for the conversion of a polyphase voltage s

Details Method and apparatus for the conversion of a polyphase voltage s Method and apparatus for the conversion of a polyphase voltage s

1984-11-26

1986-12-09

Wong, Peter S.

Electric power conversion systems

Cascaded or combined, diverse conversions in which the...

Combined phase and frequency conversion

363159, H02M 522

Patent

active

046284257

ABSTRACT:
A three phase voltage system, balanced and sinusoidal, is converted into another one, having the same properties, but with amplitude, frequency and phase changed, by means of sequential sampling of all input phases. The desired output system is synthetized through a matrix of electronic switches, which are operated sequentially by control pulses having a duration proportional to the instant value of a linear combination of sinusoidal waveforms and with a duty cycle modulated accordingly to the required output parameters.

REFERENCES:
patent: 3148323 (1964-09-01), Blake et al.
patent: 3170107 (1965-02-01), Jessee
patent: 3999112 (1976-12-01), Gyugyi
patent: 4041368 (1977-08-01), Gritter
patent: 4439823 (1984-03-01), Gyugyi et al.

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