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Method for estimating initial magnetic pole position of permanent magnet brushless motor and permanent magnet brushless motor control device
Method for estimating initial magnetic pole position of permanent magnet brushless motor and permanent magnet brushless motor control device
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机译:永磁无刷电动机的初始磁极位置估计方法和永磁无刷电动机控制装置
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摘要
PPROBLEM TO BE SOLVED: To provide a device and a method which can shorten and fix the setting time until conforming an axis to a real magnetic axis d or an axis -d which has advanced 180 from the real magnetic axis, without recourse to the electric angle of the reference phase 0 to start the estimation of the initial magnetic pole, and can improve the accuracy in magnetic pole position estimation, by estimating a magnetic pole position estimation starting phase S in advance. PSOLUTION: It is so arranged as process the transaction in such a procedure as to observe and store the interference current generated in the direction of an axis when a -axis current command from a -axis current generating circuit 1 is given as a step-form AC current command, within a SB/SBSBs/SBmaking circuit 7, and to decide the magnetic pole position estimation starting phase SBS/SBin advance by the magnitude relation of the interference current stored this way. PCOPYRIGHT: (C)2006,JPO&NCIPI
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