基本信息:
- 专利标题： Electrical angle detecting device and synchronous motor drive device
- 专利标题（中）：电角度检测装置和同步电机驱动装置
- 申请号：EP97103289.1 申请日：1997-02-27
- 公开(公告)号：EP0793337A3 公开(公告)日：1997-12-03
- 发明人： Taga, Yoshiaki , Kawabata, Yasutomo
- 申请人： TOYOTA JIDOSHA KABUSHIKI KAISHA
- 申请人地址： 1, Toyota-cho Toyota-shi Aichi-ken JP
- 专利权人： TOYOTA JIDOSHA KABUSHIKI KAISHA
- 当前专利权人： TOYOTA JIDOSHA KABUSHIKI KAISHA
- 当前专利权人地址： 1, Toyota-cho Toyota-shi Aichi-ken JP
- 代理机构： Pellmann, Hans-Bernd, Dipl.-Ing.
- 优先权： JP71508/96 19960229
- 主分类号： H02P7/62
- IPC分类号： H02P7/62
摘要：
An electrical angle detecting device for detecting the electrical angle of a synchronous motor utilizes differences in inductance between phases with the angle of a rotor 50 to determine electrical angle. Voltage is applied across predetermined phases, the currents Iu, Iv, Iw flowing through U, V, W phases as a function of the differing inductance with angle of the rotor 50 are simultaneously detected, and the electrical angle is determined from relationships among the three currents stored in memory beforehand. In a first stage, the electrical angle is determined in the 0-π range or the π-2π range by an approximation calculation and in a second stage the asymmetry of the maximum currents produced by the voltage applied across the phases is utilized to ascertain the range in which the electrical angle falls. the electrical angle can thus be unambiguously ascertained to enable sensorless detection of rotor position (electrical angle) even when the rotor is at rest or is rotating slowly.
摘要（中）：
用于检测同步电机的电角度的电角度检测装置利用相位之间的电感与转子50的角度之间的差值来确定电角度。 电压跨越预定相施加，同时检测作为不同电感与转子50的角度的函数的流过U，V，W相的电流Iu，Iv，Iw，并且根据三者之间的关系 预先存储在存储器中的电流。 在第一阶段中，通过近似计算在0-π范围或π-2π范围内确定电角度，并且在第二阶段中，利用由相间施加的电压产生的最大电流的不对称性来确定 电角度下降的范围。 因此可以明确地确定电角度，从而即使在转子静止或缓慢旋转时也能够实现对转子位置（电角度）的无传感器检测。