Systems and methods for improved motor drive power factor...

Details Systems and methods for improved motor drive power factor... Systems and methods for improved motor drive power factor...

2007-01-30

2009-02-24

Ro, Bentsu (Department: 2837)

Electricity: motive power systems

Induction motor systems

Power-factor control

C318S438000, C318S800000, C318S801000, C363S034000, C363S037000, C363S089000, C363S097000

Reexamination Certificate

active

07495410

ABSTRACT:
Systems and methods are described for controlling power factor in motor drives having a switching rectifier providing a DC link current to an inverter in which the rectifier gain is increased to provide additional DC link current to correct the drive power factor based on current drawn by capacitors of the AC drive power input, and the inverter gain is decreased by introducing bypass states in the inverter switching control scheme or by reducing the motor flux to accommodate the increased DC link current.

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European Search Report, EP 08 10 0991, Jun. 2, 2008, Munich.

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