考虑饱和效应的IPMSM最大转矩电流比控制

Maximum-torque-per-ampere Control of IPMSM Considering Saturation Effect

针对内置式永磁同步电机I(PMSM)d,q轴电感不相等的特性,对最大转矩电流比控制方法,即在相同的电流下可输出更大转矩的控制方法进行了研究,用极值原理推导出在输出转矩一定时所需最小d,q轴电流应满足的关系式,从而在系统容量相同的情况下相对于id=0控制可显著提高系统的低速转矩及动态性能。在最大转矩电流比控制的基础上,进一步考虑到电感饱和效应,给出了适于工程应用的近似算法并应用于工程实践。最后进行了试验对比,试验结果表明该方法可有效提高系统的转矩输出能力,具有很好的工程应用性。

For interior permanent magnet synchronous motor（IPMSM） in which the d-axis inductance is not equal to the q-axis inductance, the maximum torque per ampere control scheme is inductance.The currents of d, q-axis are deduced according to the extremum principle under certain torque input ,which will be considered.And the saturation ef- fect of the inductance is considered.For the convenience of engineering application, the expressions between d ,q axis current and torque are linearized and an engineering approximate algorithm for the maximum torque per ampere con- trol is given.The experimental results verify the effectiveness and engineering practicability of the proposed approach.