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Study of Dead-Time Compensation on Direct Torque Control of ALA Rotor Motor

机译:ALA转子电动机直接转矩控制的死区补偿研究

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Space-vector pulse width modulation (SVPWM) method have been wildly developed in direct torque control and vector control. The SVPWM is an excellent control strategy, but the relation between reference voltage and actual output voltage is nonlinear due to the dead time effect and the voltage drop of power devices. The distortion of voltage invokes serious problems such as current waveform distortion and deterioration of the systems. An improved method which reduces the distortion of voltage and current in axially laminated anisotropic (ALA) rotor motor direct torque control (DTC) system is presented. It compensated three-phase voltages in terms of current directions. The method can be implemented with software without any extra hardware. The experiment results verify this method has a good compensation effect.
机译:在直接转矩控制和矢量控制中,空间矢量脉冲宽度调制(SVPWM)方法已经得到了广泛的发展。 SVPWM是一种出色的控制策略,但是由于停滞时间效应和功率器件的压降,参考电压与实际输出电压之间的关系是非线性的。电压失真会引起严重的问题,例如电流波形失真和系统性能下降。提出了一种改进的方法,可以减少轴向叠片各向异性(ALA)转子电动机直接转矩控制(DTC)系统中电压和电流的失真。它根据电流方向补偿了三相电压。该方法可以用没有任何额外硬件的软件来实现。实验结果证明该方法具有良好的补偿效果。

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