Negative sequence compensation for polyphase equipment

Details Negative sequence compensation for polyphase equipment Negative sequence compensation for polyphase equipment

1975-05-22

1977-05-24

Rubinson, Gene Z.

Electricity: motive power systems

Motor-reversing

Armature or primary circuit control

318509, 318513, 361113, 323 83, 361 31, 323 7, H02P 740

Patent

active

040258343

ABSTRACT:
Negative sequence compensation apparatus for reducing, and thereafter minimizing the increase of, negative sequence currents flowing in a three phase motor includes variable impedance elements, and means for adjusting the impedance thereof, disposed in the motor supply lines. Alternate embodiments disclose saturable reactors as the variable impedance elements electrically connected with the supply terminals by way of alternate transformer connections.

REFERENCES:
patent: 1186804 (1916-06-01), Lamme
patent: 2066932 (1937-01-01), Evans
patent: 2876412 (1959-03-01), Artzt
patent: 3054944 (1962-09-01), Brooke et al.
patent: 3855412 (1974-12-01), Maddux

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