Abstract This paper presents four-quadrant sensorless control in switched reluctance machine (SRM) over the wide speed range. The proposed sensorless control technique could be employed not only at low speed with current chopping control (CCC) but also at high speed with angle position control (APC). At startup and low speed, the narrow voltage pulse is injected into the idle phases and the rotor position zone is determined by comparing the measured flux linkage with four flux linkage-current curves. The same flux linkage-current curves also can be adopted for rotor positions estimation at medium and high speeds. Two flux linkage-current characteristic curves in the inductance rising zone are employed to estimate the rotor position for motoring mode and the other two curves in the inductance falling zone are used to estimate the rotor position for braking mode. The experiments on a three-phase 12/8 pole SRM drive platform are carried out to verify the effectiveness of the proposed sensorless control technique.

中文翻译：

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开关磁阻电机在宽速度范围内的四象限无传感器运行

摘要 本文介绍了开关磁阻电机 (SRM) 在宽速度范围内的四象限无传感器控制。所提出的无传感器控制技术不仅可以在低速下使用电流斩波控制 (CCC)，而且可以在高速下使用角位置控制 (APC)。在启动和低速时，窄电压脉冲被注入空转阶段，转子位置区通过将测得的磁链与四个磁链-电流曲线进行比较来确定。相同的磁链-电流曲线也可用于中高速转子位置估计。电感上升区的两条磁链-电流特性曲线用于估计电动模式的转子位置，电感下降区的另外两条曲线用于估计制动模式的转子位置。在三相 12/8 极 SRM 驱动平台上进行了实验，以验证所提出的无传感器控制技术的有效性。