基于占空比调节的无刷直流电机直接转矩控制
发布时间：2018-07-13 14:50
【摘要】：传统直接转矩控制(DTC)在每一个控制周期对电机施加一个不变的电压矢量,从而导致较大的转矩脉动,而且开关管的开关频率不固定。为减小转矩脉动同时使开关管的开关频率恒定从而提升系统的稳定性,将占空比调制技术引入到无刷直流电机(BLDCM)DTC系统当中,并研究了4种占空比生成方法对转矩脉动的抑制效果。由于引入了占空比调制技术,零电压矢量和非零电压矢量作用的时间随占空比的改变而改变,因此能够对转矩进行更精细的控制从而抑制转矩脉动。仿真和试验结果验证了所提方法的有效性。
[Abstract]:Traditional direct torque control (DTC) applies a constant voltage vector to the motor in each control cycle, which leads to a large torque ripple and the switching frequency of the switch tube is not fixed. In order to reduce the torque ripple and stabilize the switching frequency of the switch tube and improve the stability of the system, the duty cycle modulation technique is introduced into the brushless DC motor (BLDCM) DTC system. The effect of four duty cycle generation methods on torque ripple suppression is studied. With the introduction of duty cycle modulation technology, the time of zero-voltage vector and non-zero-voltage vector change with the duty cycle, so the torque ripple can be controlled more carefully. Simulation and experimental results show the effectiveness of the proposed method.
【作者单位】： 太原科技大学电子信息工程学院;
【基金】：山西省自然科学基金项目(2010011024-3)
【分类号】：TM33
[Abstract]:Traditional direct torque control (DTC) applies a constant voltage vector to the motor in each control cycle, which leads to a large torque ripple and the switching frequency of the switch tube is not fixed. In order to reduce the torque ripple and stabilize the switching frequency of the switch tube and improve the stability of the system, the duty cycle modulation technique is introduced into the brushless DC motor (BLDCM) DTC system. The effect of four duty cycle generation methods on torque ripple suppression is studied. With the introduction of duty cycle modulation technology, the time of zero-voltage vector and non-zero-voltage vector change with the duty cycle, so the torque ripple can be controlled more carefully. Simulation and experimental results show the effectiveness of the proposed method.
【作者单位】： 太原科技大学电子信息工程学院;
【基金】：山西省自然科学基金项目(2010011024-3)
【分类号】：TM33
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