System for bridging brief network failures

Details System for bridging brief network failures System for bridging brief network failures

1981-07-20

1983-04-05

Shoop, William M.

Electric power conversion systems

Current conversion

Including an a.c.-d.c.-a.c. converter

363 37, 363 51, 318803, 318808, H02J 336, H02H 712

Patent

active

043793258

ABSTRACT:
An arrangement for bridging brief network failures in intermediate-link converters converts the kinetic energy in load motors into electrical energy by reducing the frequency of the converter. Such a frequency reduction is performed in accordance with the value of a control deviation signal corresponding to the difference between desired and actual frequencies of operation of the converter. The control deviation signal is produced by the combination of a PI controller which is coupled at its output to an integrator circuit. The integrator circuit controls the frequency and voltage of the converter.

REFERENCES:
patent: 3560834 (1971-02-01), Studtmann
patent: 3796935 (1974-03-01), Blaschke
patent: 3887853 (1975-06-01), Klein et al.
patent: 4139885 (1979-02-01), Overzet et al.

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