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发明公开
CN109617489A 一种新型的无刷直流电机直接转矩控制方法 有权

一种新型的无刷直流电机直接转矩控制方法
摘要：
本申请属于无刷直流电机控制设计技术领域，特别涉及一种新型的无刷直流电机直接转矩控制方法，该方法包括以下步骤：获取无刷直流电机的三相电流iA、iB、iC，三相相电感LA、LB、LC，三相反电势波形fA(θr)、fB(θr)、fC(θr)，以及转子位置角θr作为获取信息；根据获取信息及无刷直流电机的预定控制信息计算得到无刷直流电机的定子磁链位置角θs、定子磁链幅值ψs、定子磁链幅值期望值电磁转矩反馈值Te、电磁转矩预定值作为判定信息；根据判定信息生成对应的控制指令；根据控制指令输出对应的电压矢量，所述电压矢量用于驱动所述无刷直流电机。与现有控制方法相比，该方法可全面提升无刷直流电机的综合控制性能。
摘要（英）：

The invention belongs to the technical field of brushless DC motor control design, and particularly relates to a novel direct torque control method of a brushless DC motor. The method comprises the following steps of acquiring three phase currents i, i and i, three phase inductance L, L and L, three phase counter potential waveforms f(Theta), f(Theta) and f(Theta) and a rotor position angle Theta as acquisition information; calculating to obtain a stator flux position angle Theta, stator flux amplitude Psi, a stator flux amplitude expected value Psi<*>, an electromagnetic torque feedback value T and an electromagnetic torque preset value T<*> as judgment information of the brushless DC motor according to the acquisition information andpreset control information of the brushless DC motor; generating a corresponding control instruction according to the judgment information; and outputting a corresponding voltage vector according to the control instruction, wherein the voltage vector is used for driving the brushless DC motor. Compared with an existing control method, the method has the advantages that the comprehensive control performance of the brushless DC motor can be comprehensively improved.

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