基于输出电压扰动的自调整死区补偿及零低速优化策略研究

在传统死区补偿方式基础上，提出一种根据输出电压矢量幅值调整死区时间的补偿策略，在同步旋转坐标系下，通过调整输出电压矢量幅值和参考电压矢量幅值之间的扰动电压，获得最终的死区补偿时间，能够明显改善电流过流点时补偿不合理的现象；针对感应电机零低速控制稳定性和保证大负载转矩输出能力的问题，提出根据转矩电流反馈值实时调整死区补偿值的控制策略，既保证感应电机控制的稳定性，又保证了大转矩输出能力。通过仿真和台架试验验证控制策略的有效性。

Research on Adaptive Dead-time Compensation and Zero-low Speed Optimization Strategy Based on Output Voltage Disturbance

Based on the traditional dead time compensation method,a compensation strategy was proposed to adjust the dead time according to the output voltage vector amplitude.In the synchronous rotating coordinate system,by adjusting the disturbance voltage between the output voltage vector amplitude and the reference voltage vector amplitude,the final dead time compensation time can be obtained,which can significantly improve the phenomenon of unreasonable compensation at the current overcurrent point.To solve the problems of zero-low speed control stability and high load torque output capability of induction motor,a control strategy was proposed to adjust the dead time compensation value in real time according to the torque current feedback value,which not only ensured the stability of induction motor control,but also ensured the high torque output capability.The effectiveness of the control strategy was verified by simulation and bench test.