Electric power conversion systems – Current conversion – Including an a.c.-d.c.-a.c. converter
Patent
1996-08-30
1998-09-15
Berhane, Adolf
Electric power conversion systems
Current conversion
Including an a.c.-d.c.-a.c. converter
318803, 323207, H02M 5458
Patent
active
058088806
ABSTRACT:
A method and apparatus for controlling a regenerative drive having line and load converters connected by a DC link, the load converter for connection to an AC machine, and the line converter for connection to an AC source/sink by means of line reactors, the drive for causing real power to flow in the line reactors to control the DC link voltage at a selected DC voltage and for determining when a commanded line converter voltage exceeds a selected maximum line converter voltage for also causing reactive power to flow in the line reactors to reduce the line converter voltage required to control the real power flow.
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Berhane Adolf
Jardieu Derek J.
Otis Elevator Company
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