Current control for IPMSM drives: Direct discrete-time pole-placement design

2015 IEEE Workshop on Electrical Machines Design, Control and Diagnosis (WEMDCD) Pub Date : 2015-03-26 DOI:10.1109/WEMDCD.2015.7194524

M. Hinkkanen, Zengcai Qu, H. Awan, Toni Tuovinen, F. Briz

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引用次数: 11

Abstract

This paper deals with discrete-time models and current control methods for synchronous motors with a magnetically anisotropic rotor structure, such as interior permanent-magnet synchronous motors (IPMSMs) and synchronous reluctance motors (SyRMs). Dynamic performance of current controllers based on continuous-time models is limited, especially if the ratio of the sampling frequency to the fundamental frequency is low. An exact closed-form hold-equivalent discrete motor model is derived. The zero-order hold of the stator-voltage input is modeled in stationary coordinates, where it physically is. An analytical discrete-time pole-placement design method for a two-degree-of-freedom state-space current controller with an integral action is proposed. The proposed method is easy to apply: only the desired closed-loop bandwidth and the three motor parameters (Rs, Ld, Lq) are required. The robustness of the proposed current control design against parameter errors is analyzed. The controller is experimentally verified using a 6.7-kW SyRM drive.

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IPMSM驱动器的电流控制:直接离散时间极点放置设计

本文研究了具有磁各向异性转子结构的同步电动机的离散时间模型和电流控制方法，如内嵌式永磁同步电动机和同步磁阻电动机。基于连续时间模型的电流控制器的动态性能受到限制，特别是当采样频率与基频之比较低时。导出了一个精确的闭式保持等效离散电机模型。定子电压输入的零阶保持器在静止坐标中建模，在那里它的物理位置。提出了一种具有积分作用的二自由度状态空间电流控制器的解析离散极点布置设计方法。所提出的方法易于应用:只需要所需的闭环带宽和三个电机参数(Rs, Ld, Lq)。分析了所提电流控制设计对参数误差的鲁棒性。该控制器使用6.7 kw SyRM驱动器进行了实验验证。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

2015 IEEE Workshop on Electrical Machines Design, Control and Diagnosis (WEMDCD)

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