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1. 发明授权

US06184647B2 Method of estimating initial pole position of permanent magnet brushless motor 失效
标题翻译：永磁式无刷电机初始磁极位置估算方法
公开(公告)号：US06184647B2
公开(公告)日：2001-02-06
申请号：US09446268
申请日：1999-12-20
申请人： Ryuichi Oguro , Takeshi Kamei
发明人： Ryuichi Oguro , Takeshi Kamei
IPC分类号： H02P134
CPC分类号： H02P6/18 , H02P6/20 , H02P6/28
摘要： In order to estimate a magnetic pole position of a permanent magnet type brushless motor, the following steps are conducted. A given &ggr; axis and a given &dgr; axis in an advanced from the &ggr; axis by an electrical angle of 90° are set. A closed-loop electric current control system in the &ggr; axis direction is formed while forming an open-loop electric current control system in the &dgr; axis direction. It is calculated an interference current generating in the &dgr; axis direction when a current command in the &ggr; axis direction is given as a stepwise alternating current command. The &ggr; axis is finely advanced by an angle of &Dgr;&thgr; when a sign of a product of an integral value of the interference current and a value of the current command in the &ggr; axis direction is positive. Alternatively, the &ggr; axis is finely delayed by an angle of &Dgr;&thgr; when the sign is negative. Thereby, the &ggr; axis is made accord with either a d axis as a true magnetic axis or with a -d axis advanced by 180° from the true magnetic axis.
摘要翻译：为了估计永磁式无刷电动机的磁极位置，进行以下步骤。给定的伽马轴和从伽马轴推进电角度为90°的给定三角轴被设置。在沿三角轴方向形成开环电流控制系统的同时形成伽马轴方向的闭环电流控制系统。当以γ轴方向的电流指令作为逐步交流指令给出时，计算出沿三角轴方向产生的干扰电流。当干涉电流的积分值和伽马轴方向的电流指令的值的乘积的符号为正时，伽马轴精确地前进一个DELTAtata的角度。或者，当符号为负时，伽马轴被精确地延迟DELTAθ的角度。因此，γ轴与d轴作为真磁轴或与从真磁轴推进180°的-d轴一致。

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