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一种基于间接定子量的牵引电机三电平控制技术应用研究
A study on the application of a three-level control technology for traction motors based on indirect stator quantities
- 机车电传动 2024年第2期 页码：66-74
- 作者机构：
中车株洲电力机车研究所有限公司，湖南 株洲 412001
- 作者简介：
胡 亮，男，硕士，工程师，主要从事变流控制与故障诊断技术方面的研究；E-mail: huliang2@csrzic.com
- 基金信息：国家重点研发计划项目(2022YFB2502804)
DOI：10.13890/j.issn.1000-128X.2024.02.008
中图分类号： TM301.2纸质出版日期：2024-03-10，
收稿日期：2023-11-27，
- 稿件说明：
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胡亮, 梅文庆, 吕永灿, 等. 一种基于间接定子量的牵引电机三电平控制技术应用研究[J]. 机车电传动, 2024(2): 66-74.
HU Liang, MEI Wenqing, LYU Yongcan, et al. A study on the application of a three-level control technology for traction motors based on indirect stator quantities[J]. Electric drive for locomotives,2024(2): 66-74.
胡亮, 梅文庆, 吕永灿, 等. 一种基于间接定子量的牵引电机三电平控制技术应用研究[J]. 机车电传动, 2024(2): 66-74. DOI：10.13890/j.issn.1000-128X.2024.02.008.
HU Liang, MEI Wenqing, LYU Yongcan, et al. A study on the application of a three-level control technology for traction motors based on indirect stator quantities[J]. Electric drive for locomotives,2024(2): 66-74. DOI：10.13890/j.issn.1000-128X.2024.02.008.
摘要
为满足大功率牵引电传动应用场景对电机输出转矩高精度、快响应等要求，文章提出一种基于间接定子量控制（Indirect Stator Quantities Control，ISC）的牵引电机三电平驱动控制方法。首先，结合ISC控制特点和异步电机模型提出了一种动态弱磁控制方法，保证了电机在高速弱磁区转矩的高动态响应。其次，为有效解决传统三电平算法存在的中点电位不平衡问题，根据中点箝位型（Neutral Point Clamped
NPC）三电平逆变器不同开关矢量对中性点电位的不同作用，基于电荷周期平衡精准计算和比例积分（Proportional Integral
PI）控制器原理，提出了一种具有平衡精度高、抗干扰性能强的新型中点电位平衡控制策略。最后通过仿真研究与某轨道交通大功率异步电机对拖试验测试，试验结果表明文章所提出的控制方法具有高动态响应、高中点电位平衡度、高转矩控制精度等优点。
Abstract
In order to meet the requirements of high-power traction electric drive applications for high precision and fast response of motor output torque
this paper proposes a three-level drive control method for traction motors based on indirect stator quantities control (ISC). Firstly
a dynamic flux weakening control method based on the characteristics of ISC control and the model of induction motor
was proposed to ensure the high dynamic response of motor torque in the high-speed flux weakening region; then
in order to effectively solve the problem of neutral-point potential imbalance in traditional three-level algorithms
according to the different effects of different switch vectors on the neutral-point potential of the neutral point clamped (NPC) three-level inverter
a new neutral-point potential balance control strategy with high balance accuracy and strong anti-interference performance was proposed based on precise calculation of charge cycle balance and principles of proportional integral (PI) controller. Finally
this method was tested through simulation research and the back-to-back testing with a high-power induction motor for rail transit. The test results show the control method proposed in this paper has advantages of high dynamic response
high neutral-point potential balance
and high torque control accuracy.
关键词
牵引电机间接定子量控制弱磁控制中点电位平衡
Keywords
traction motorindirect stator quantities controlflux weakening controlneutral-point potential balance
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