电动汽车用感应电机弱磁区电磁转矩最大化控制

龙波 1; 曹秉刚 1; 胡庆华 1; 2; 李飞 1; 2

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电动汽车用感应电机弱磁区电磁转矩最大化控制

更新时间：2025-07-09

- 电动汽车用感应电机弱磁区电磁转矩最大化控制
- Maximum Torque Control Strategy in Field-Weakening Region of Induction Motors for Electric Vehicles
- 西安交通大学学报 2009年43卷第4期页码：62-65+100
- 作者机构：
  
  西安交通大学机械工程学院,西安,710049
- 作者简介：
- 基金信息：
  
  : 2008-06-20. 作者简介: 龙波(1979-),男,博士生;曹秉刚(联系人),男,教授,博士生导师. 基金项目: 国家星火计划资助项目(2004EA105003)
- DOI：
  中图分类号： TN911.22
- 网络首发：2009-04-10，
  
  纸质出版：2009
- 稿件说明：
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龙波 1, 曹秉刚 1, 胡庆华 1, 等. 电动汽车用感应电机弱磁区电磁转矩最大化控制[J]. 西安交通大学学报, 2009,43(4):62-65+100.

Maximum Torque Control Strategy in Field-Weakening Region of Induction Motors for Electric Vehicles[J]. 2009, 43(4): 62-65+100.
龙波 1, 曹秉刚 1, 胡庆华 1, 等. 电动汽车用感应电机弱磁区电磁转矩最大化控制[J]. 西安交通大学学报, 2009,43(4):62-65+100. DOI：

Maximum Torque Control Strategy in Field-Weakening Region of Induction Motors for Electric Vehicles[J]. 2009, 43(4): 62-65+100. DOI：

摘要

针对弱磁区内传统的直接转矩控制方法存在转矩输出不足

受电机参数影响较大的问题

提出了一种弱磁区内感应电机转矩最大化保持方法.该方法通过建立弱磁区内电压限制方程和电流限制方程

并在弱磁区I内采用将电压限制区和电流限制区结合取交集的办法

求解并得到参考电流矢量、电磁转矩表达式.然后

在弱磁区II内利用电压限制区方程和转矩方程联合求解

并取保持电磁转矩最大时的参考电流矢量.该方法可在全速范围内替代传统直接转矩控制下的弱磁区内转矩调节方案.仿真及实验结果表明

所提方法较传统控制策略有21%的电磁转矩提升

对电动汽车用感应电机而言

还能有效利用电池电压

具有重要的实用价值.

Abstract

Aiming at the drawbacks of insufficient torque output of field-weakening control strategy in traditional direct torque control method

a maximum torque operation scheme is proposed by establishing voltage limit equation and current limit equation. Voltage limit area is combined with current limit area for maximum torque output consideration. The reference current vector and torque expression are calculated in field-weakening region one. Then voltage limit equation is combined with torque expression to get the maximum torque output in field-weakening region two. Theoretical analysis demonstrates that the new method can replace the traditional direct torque control scheme on speed regulation range in the whole field-weakening region. Compared with traditional direct torque control scheme in field-weakening region

the proposed method can improve torque margin by 21% under the same condition

and the new strategy is verified to be powerful for induction motor drive electric vehicles with lower energy from battery.

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Keywords

references

KIM S H, SUL S K. Maximum torque control of an induction machine in the field weakening region [J]. IEEE Transactions on Industry Applications, 1995, 31(4): 787-795.

KIM S H, SUL S K. Voltage control strategy for maximum torque operation of an induction machine in the field weakening region [J]. IEEE Transactions on Industry Electronics, 1997, 44(4): 599-605.

TRIPATHI A, KAMBADKONE A M, PANDA S M. Dynamic control of torque in over-modulation and in the field weakening region [J]. IEEE Transactions on Power Electronics, 2006, 21(4):1091-1098.

窦汝振, 吴志新, 赵春明. 电动汽车用异步电机弱磁运行的最大转矩控制[J]. 电机与控制应用, 2006(12):64-68.

DOU Ruzhen, WU Zhixin, ZHAO Chunming. Maximum torque control for field weakening operation of asynchronous motor applied in electric vehicle[J]. Electric Machines Control Application, 2006(12):64-68.

XU Xingyi, NOVOTNY D W. Selection of the flux reference for induction machine drives in the field weakening region [J]. IEEE Transactions on Industry and Applications, 1992, 28(6): 1353-1358.

VAN H W,DER BROECK H. Analysis and realization of a pulse width modulator based on voltage space vectors [J]. IEEE Transactions on Industry Applications, 1988, 24(1): 142-150.

SHIN M H, HYUN D S, CHO S B, et al. An improved stator flux estimation for speed sensorless stator flux orientation control of induction motors [J]. IEEE Transactions on Power Electronics, 2000, 15(2): 312-318.

ABU-RUB H, SCHMIRQEL H, HOLTZ J. Maximum torque production in rotor field oriented control of an induction motor at field weakening [C]∥2007 IEEE International Symposium on Industrial Electronics. Piscataway, NJ, USA: IEEE, 2007: 1150-1164.

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