Electricity: motive power systems – Induction motor systems – Primary circuit control
Reexamination Certificate
2007-02-12
2009-08-18
Ro, Bentsu (Department: 2837)
Electricity: motive power systems
Induction motor systems
Primary circuit control
C318S268000, C318S717000, C318S767000
Reexamination Certificate
active
07576511
ABSTRACT:
The present invention employed a motor control device including: current sensors which detect currents in each phase of a three-phase motor; a coordinate conversion device which computes a d-axis actual current and a q-axis actual current in dq-coordinates from phase currents of three phases based on detection values of the current sensors; a voltage instruction computation device which computes a d-axis voltage instruction and a q-axis voltage instruction based on a deviation between a d-axis current instruction and the d-axis actual current and on a deviation between a q-axis current instruction and the q-axis actual current; a target phase current computation device which computes target phase currents for each phase from the d-axis current instruction and the q-axis current instruction; and a current difference computation device which computes, for each phase, a current difference between the phase current and the target phase current.
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European Search Report for 07102264 mailed Jun. 20, 2007.
Sugiyama Tetsu
Takahashi Hisayoshi
Uchida Shintaro
Honda Motor Co. Ltd.
Luo David S
Ro Bentsu
Westerman, Hattori, Daniels & Adrian , LLP.
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