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2. 发明授权

US6046561A Commutation control method for a switched reluctance machine 失效
标题翻译：开关磁阻电机换向控制方法
公开(公告)号：US6046561A
公开(公告)日：2000-04-04
申请号：US197882
申请日：1998-11-23
申请人： Andrew Karl Zup , Robert John Disser , Michael Bernard Monahan
发明人： Andrew Karl Zup , Robert John Disser , Michael Bernard Monahan
IPC分类号： H02P25/08 , H02P6/12 , H02P7/05
CPC分类号： H02P25/0925
摘要： An improved commutation control method precisely controls commutation in a switched reluctance machine with a relatively low resolution position encoder and a low cost micro-processor based controller. The control method involves the formation of a motor position signal having logic level transitions, or edges, that define base commutation signals for commutating the motor phase windings in sequence with no phase advance. When no phase advance is desired, the controller turns the phase windings on and off in time with the respective base commutation signals. When phase advance is desired, the controller turns each of the windings on and off relative to the base commutation signal for the preceding phase winding. More specifically, the turn-on and turn-off points for phase advance control are timed to occur a delay time after the edges of the base commutation signal for the preceding phase. The delay time is determined by measuring the time between two successive edges of the motor position signal, and reducing such measure by a constant value corresponding to a selected linear profile of phase advance vs. motor speed. The control method may be utilized in the context of a motor control strategy in which the motor is operated with no phase advance at low speeds, at a fixed maximum phase advance at very high speeds, and at a speed dependent variable phase advance at intermediate motor speeds.
摘要翻译：改进的换向控制方法精确地控制了具有相对低分辨率位置编码器和低成本基于微处理器的控制器的开关磁阻电机中的换向。该控制方法包括形成具有逻辑电平转换或边缘的电动机位置信号，其限定用于没有相位超前的顺序换向电动机相绕组的基本换向信号。当不需要相位提前时，控制器在相应的基极换向信号的时间内使相位绕组接通和关断。当需要相位提前时，控制器相对于前一相绕组的基极换向信号使每个绕组接通和断开。更具体地，用于相位超前控制的导通和关断点被定时以在前一相位的基极换向信号的边沿之后的延迟时间发生。延迟时间通过测量电机位置信号的两个连续边缘之间的时间来确定，并且通过对应于相位提前与电动机速度的所选线性轮廓的常数值来减小该测量。控制方法可以在马达控制策略的上下文中使用，其中马达在低速下以相位超前运行，以非常高的速度在固定的最大相位提前运行，并且在中间马达处以速度相关的可变相位前进运行速度。

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