Multi-loop control system for an ac/dc converter employing mode

Details Multi-loop control system for an ac/dc converter employing mode Multi-loop control system for an ac/dc converter employing mode

1984-01-31

1985-12-10

Beha, Jr., William H.

Electric power conversion systems

Current conversion

With condition responsive means to control the output...

363 87, H02P 1326

Patent

active

045584052

ABSTRACT:
A multi-loop control system for convertors of the kind used in h.v.d.c. transmission and industrial applications. The invention consists in a control circuit which effects transfer between two or more control loops, e.g. a constant-current loop and a constant .alpha. loop, in a smooth and precise manner, without extra smoothing lags, even in the presence of ripple in the controlled quantities.

REFERENCES:
patent: 3466525 (1969-09-01), Ainsworth
patent: 3832620 (1974-08-01), Pollard
patent: 3863134 (1975-01-01), Pollard
Skjellnes et al., "Phase-Locked Loop Control of Thyristor Converters," Proc. IEE, vol. 123, No. 10, pp. 999-1001, Oct. 1976.

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