Four-phase switched reluctance motor torque ripple three-level suppression method
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机译:四相开关磁阻电动机转矩脉动三电平抑制方法
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摘要
A four-phase switched reluctance motor torque ripple three-level suppression method. A first set of torque thresholds is set in rotor position interval [0°, θr/4]. A second set of torque thresholds is set in rotor position interval [θr/4, θr/2]. Power is supplied to adjacent phase A and phase B for excitation. The power supplied for excitation to phase A leads the power supplied for excitation to phase B by θr/4. An entire commutation process from phase A to phase B is divided into two intervals. In rotor position interval [0°, θ1], phase A uses the second set of torque thresholds while phase B uses the first set of torque thresholds. Critical position θ1 automatically appears in the commutation process, thus obviating the need for additional calculations. Total torque is controlled between [Te+th2low and Te+th2up]. In rotor position interval [θ1, θr/4], phase A continues to use the second set of torque thresholds, phase B continues to use the first set of torque thresholds, and the total torque is controlled between [Te+th1low and Te+th1up]. This suppresses torque ripples of a four-phase switched reluctance motor and provides great engineering application values.
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机译:四相开关磁阻电动机转矩脉动三电平抑制方法。在转子位置间隔[0°,θ r Sub> / 4]中设置第一组转矩阈值。在转子位置间隔[θ r Sub> / 4,θ r Sub> / 2]中设置第二组转矩阈值。将功率提供给相邻的A相和B相进行励磁。提供给相A的励磁功率领先提供给相B的励磁功率θ r Sub> / 4。从相A到相B的整个换向过程分为两个间隔。在转子位置间隔[0°,θ 1 Sub>]中,阶段A使用第二组扭矩阈值,而阶段B使用第一组扭矩阈值。临界位置θ 1 Sub>在换向过程中自动出现,因此无需进行其他计算。总扭矩控制在[T e Sub> + th2 low Sub>和T e Sub> + th2 up Sub>]之间。在转子位置间隔[θ 1 Sub>,θ r Sub> / 4]中,阶段A继续使用第二组转矩阈值,阶段B继续使用第一组转矩阈值阈值,并且总扭矩控制在[T e Sub> + th1 low Sub>和T e Sub> + th1 up Sub>]之间。这样可以抑制四相开关磁阻电动机的转矩脉动,并提供出色的工程应用价值。
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