考虑磁路饱和的IPMSM电感辨识算法及变参数MTPA控制策略

发布时间：2018-04-17 21:06

本文选题：内置式永磁同步电机(IPMSM) + 磁路饱和　；参考：《电工技术学报》2017年11期

【摘要】：内置式永磁同步电机(IPMSM)d、q轴电感会随着磁路饱和程度的不同而发生改变,这会降低最大转矩电流比(MTPA)控制的有效性。考虑到定子电流引起的磁路饱和及交叉饱和效应的影响,提出了相应的d、q轴电感辨识算法和变参数MTPA控制策略。采用基于旋转高频电压注入的d、q轴电感辨识算法可在其他电机参数未知的前提下得到不同负载条件下的d、q轴电感;变参数MTPA控制策略能够充分利用标幺值化处理的优势,在转矩-最优电流控制表不变的基础上,只需根据实际d、q轴电感更新电流基值和转矩基值便可克服电感变化带来的不利影响,并实现一定转矩条件下的最佳MTPA控制。最后在电机控制实验平台上通过实验对提出的电感辨识算法和变参数MTPA控制策略的可行性和有效性进行了验证。
[Abstract]:The inductance of IPMSM / DQ axis will change with the saturation degree of magnetic circuit, which will reduce the effectiveness of the control of the maximum torque current-current ratio (MTPA).Considering the influence of magnetic circuit saturation and cross saturation effect caused by stator current, a corresponding identification algorithm of DQ axis inductance and a variable parameter MTPA control strategy are proposed.The induction identification algorithm based on rotating high frequency voltage injection can be used to identify the DQ axis inductors with unknown parameters of other motors, and the variable parameter MTPA control strategy can make full use of the advantages of the standard unitary processing, and the variable parameter MTPA control strategy can make full use of the advantages of the standard unitary processing.Based on the invariance of the torque optimal current control table, it is necessary to update the current base value and the torque base value according to the actual dq axis inductance to overcome the adverse effects of the inductance change, and to realize the optimal MTPA control under certain torque conditions.Finally, the feasibility and effectiveness of the proposed inductance identification algorithm and variable parameter MTPA control strategy are verified by experiments on the motor control experimental platform.
【作者单位】：天津大学电气自动化与信息工程学院;宁夏大学物理与电子电气工程学院;
【分类号】：TM341

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