Electricity: motive power systems – Synchronous motor systems – Brushless motor closed-loop control
Reexamination Certificate
2011-03-01
2011-03-01
Ip, Paul (Department: 2837)
Electricity: motive power systems
Synchronous motor systems
Brushless motor closed-loop control
C318S801000, C318S802000, C318S805000, C318S807000, C318S811000
Reexamination Certificate
active
07898197
ABSTRACT:
A motor control device includes a motor current detector for detecting motor current flowing in a three-phase motor based on current flowing between an inverter driving the motor and a DC power supply, a specified voltage vector generating portion for generating a specified voltage vector indicating a voltage vector to which an applied voltage to the motor should follow based on a magnetic flux linkage of an armature winding of the motor, a specified voltage vector correcting portion for correcting the generated specified voltage vector, and a magnetic flux estimating portion for estimating the magnetic flux linkage based on the motor current and the specified voltage vector after the correction. The motor control device controls the motor via the inverter in accordance with the specified voltage vector after the correction.
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Yukinori Inoue et al., “Torque ripple reduction, and flux-weakening control for interior permanent magnet synchronous motor based on direct torque control”.
Institute of Electrical Engineers, National Conference Lecture Papers, Mar. 2006, fourth volume, 4-106, p. 166-167.
Office Action issued on Jun. 1, 2010 for a corresponding Chinese Application No. 200810144302.0.
Ip Paul
NDQ&M Watchstone LLP
Sanyo Electric Co,. Ltd.
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