Electricity: motive power systems – Induction motor systems – Primary circuit control
Reexamination Certificate
2006-12-22
2008-08-12
Ip, Paul (Department: 2837)
Electricity: motive power systems
Induction motor systems
Primary circuit control
C318S254100, C318S805000, C318S812000, C363S132000
Reexamination Certificate
active
07411369
ABSTRACT:
Apparatus and methods for phase current detection used for driving a motor by supplying outputs from a pulse width modulation (PWM) converter to the motor. One method presented provides detecting a DC link current and a vector pattern, determining whether a voltage vector lengths exceeds a predetermined value, and adjusting the voltage vector by adding a positive or reversed voltage based upon the above determination and an integrated error value.
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Tanizawa, Yoshihiko, et al. The Institue of Electrical Engineers of Japan, Sangyo Denryoku Denki Oyo Kenkyukai Shiryo, Jul. 15, 1994, vol. 1, IEA-94, Nos. 12 to 22, pp. 45-49.
Maeda Toshiyuki
Taniguchi Tomoisa
Birch Stewart Kolasch & Birch, LLP.
Daikin Industries Ltd.
Ip Paul
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