摘要： 针对方波控制方式下存在较大输出转矩脉动等问题，采用空间电压矢量脉宽调制(SVPWM)技术实现了无刷直流电机低成本正弦波驱动。在低分辨率霍尔位置传感器输出的离散角度信号基础之上，运用位置估算算法准确获取转子位置。并介绍了正弦波直接起动策略及相位超前角补偿算法。利用以MC56F8013数字信号控制器为核心的无刷直流电机控制系统实验平台对该驱动方式进行验证。实验结果表明，该驱动方式能够有效地降低输出转矩脉动，减小无刷直流电机运行噪音。

关键词：无刷直流电机；正弦波驱动； SVPWM；转子位置估算

Abstract: Due to the torque ripple problem for brushless DC motor driven by square-wave voltage, space vector pulse width modulation (SVPWM) technology was used to achieve a low-cost sinusoidal-wave control of brushless DC motor. Based on the output discrete angle values of low-resolution Hall sensors, rotor position was obtained by applying an estimation algorithm. Furthermore, the paper introduced the direct sinusoidal-wave starting control strategy and phase advance angle compensation algorithm for brushless DC motor. An experimental platform of brushless DC motor control system using MC56F8013 digital signal controller as the core was used to verify the sinusoidal-wave control strategy. Experimental results show that the control strategy can effectively reduce the output torque ripple and also reduce running noise of brushless DC motor

Key words: brushless DC motor；sinusoidal-wave drive；SVPWM；rotor position estimation