Online Minimum-Copper-Loss Control of an Interior Permanent-Magnet Synchronous Machine for Automotive Applications
Online Minimum-Copper-Loss Control of an Interior Permanent-Magnet Synchronous Machine for Automotive Applications
复制标题
DOI：
10.1109/tia.2006.880910
复制
发表时间：
2006-09
影响因子：
4.4
通讯作者：
Y. Jeong;S. Sul;Silva Hiti;K. Rahman
中科院分区：
文献类型：
--
作者：
Y. Jeong;S. Sul;Silva Hiti;K. Rahman
针对内置式永磁同步电机在驱动系统电流和电压限制下的最小铜损控制问题，考虑到电机饱和效应的非线性特性，提出了一种在线计算参考电流的算法。本文基本上接近这个问题作为一个非线性约束的优化问题，其中的转矩命令施加非线性等式约束和电压限制施加非线性不等式约束。根据不同的工作区域，它解决了相应的一组非线性方程在真实的时间从拉格朗日乘子法。在各种技术中，采用牛顿法来实现数值求解。该方案给出了准确的结果，不仅在电动机，而且在发电机的操作，因为定子电阻的电压降被考虑在内，这是很难适用于一个二维的查找表，其中的输入是转矩命令和最大磁通幅值，和输出是每个轴电流参考转子参考系。仿真和实验结果验证了该方法的可行性和性能
This paper presents an algorithm to calculate the current references on line, considering the inherent nonlinear nature of the saturation effect in an interior permanent-magnet synchronous machine for the minimum-copper-loss control under the current and voltage limit of the drive system. This paper basically approaches this issue as a nonlinearly constrained optimization problem where the torque command imposes the nonlinear equality constraint and the voltage limit imposes the nonlinear inequality constraint. Depending on the operating region, it solves the corresponding set of nonlinear equations in real time derived from the Lagrange multiplier method. Newton's method among various techniques is adopted to implement the numerical solution. This scheme gives accurate results not only in motoring but also in generating operation of the machine, since the voltage drop of the stator resistance is taken into account, which is hardly applicable to a two-dimensional lookup table where the inputs are the torque command and the maximum flux amplitude, and the output is each axis current reference in the rotor reference frame. The simulation and experimental results show the feasibility and performance of the proposed technique