Title:
永久磁石同期電動機ドライブ用回転子角度推定
Document Type and Number:
Japanese Patent JP2005510195
Kind Code:
A
Abstract:
A method of determining a rotor angle in a drive control for a motor, comprising the steps of (a) determining a rotor magnetic flux in the motor; (b) estimating the rotor angle on the basis of the rotor magnetic flux; and (c) correcting the estimated rotor angle on the basis of reactive power input to the motor. Step (a) may include the step of non-ideal integration of stator voltage and current values. Step (b) may include the step of correcting phase errors caused by said non-ideal integration via a PLL circuit with phase compensation (F). Step (c) may include the steps of (1) calculating a first reactive power input value as 1.5*We*(C_Lq*I*I) and a second reactive power input value as 1.5*(Vq*id-Vd*iq); (2) determining a difference between said first and second reactive power input values; and (3) applying said difference to the rotor angle estimated in step (b) to obtain a corrected rotor angle.
Inventors:
Eddy in inho
Application Number:
JP2003544889A
Publication Date:
April 14, 2005
Filing Date:
November 12, 2002
Export Citation:
Assignee:
INTERNATIONAL RECTIFIER CORPORATION
International Classes:
H02P21/00; H02P6/08; H02P6/18; H02P27/04; (IPC1-7): H02P21/00
Attorney, Agent or Firm:
Yoshikazu Tani
Kazuo Abe
Kazuo Abe