【摘要】 提出了一种抑制永磁同步电机电流谐波的工程化方法。对相电流谐波进行坐标变换和低通滤波,提取出其中5次、7次谐波的直流分量,求解高次谐波稳态电压方程,再通过坐标反变换计算出电压谐波补偿量,最后注入PARK逆变换输出电压中作为SVPWM计算单元输入,可以抑制相电流中的5次、7次谐波。试验结果证明所提工程化方法是可行和有效的。更多还原

【Abstract】 A engineering method to suppress current harmonics in permanent magnet synchronous motor(PMSM) was presented. The 5 and 7 current harmonics were extracted through coordinate transformation and the low-pass filter,the compensation harmonic voltage was solved by the 5 and 7 harmonic steady state voltage equations,and the harmonic component of motor current was suppressed by injecting the compensation harmonic voltages into SVPWM calculation reference voltages. The experimentation results demonstrated that the proposed method was effective.更多还原