[1]刘 尧.低开关频率下的地铁牵引电机定子磁链控制技术[J].机械与电子,2023,41(08):71-75.
　LIU Yao.Stator Flux Control Technology of Metro Traction Motor at Low Switching Frequency[J].Machinery & Electronics,2023,41(08):71-75.
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低开关频率下的地铁牵引电机定子磁链控制技术()
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《机械与电子》[ISSN:1001-2257/CN:52-1052/TH]

卷:
41
期数:
2023年08期
页码:
71-75
栏目:
机电一体化技术
出版日期:
2023-08-25

文章信息/Info

Title:
Stator Flux Control Technology of Metro Traction Motor at Low Switching Frequency
文章编号:
1001-2257 ( 2023 ) 08-0071-05
作者:
刘 尧
北京市地铁运营有限公司运营一分公司,北京 102200
Author(s):
LIU Yao
( The First Operation Company Branch of Beijing Subway Operation Co. , Ltd. , Beijing 102200 , China )
关键词:
牵引电机; 定子磁链控制; 低开关频率; 数据观测; 等效电路
Keywords:
traction motor ;  stator flux control ;  low switching frequency ;  data observation ;  equivalent circuit
分类号:
TM343
文献标志码:
A
摘要:
降低开关频率造成地铁牵引电机定子磁链谐波较大,无法保证其安全稳定运行。为此,在低开关频率约束下,提出基于连续型操作的牵引电机定子磁链控制技术。计算旋转磁场和转子的转速差,利用定子电阻、电角速率等参数创建牵引电机等效电路,明确牵引电机运行情况;将定子静止坐标系中的电流与磁链视作变量创建滑模观测器,获得定子磁链当前观测值;运用间接定子量控制法增强牵引电机低速控制能力,推导定子磁链与电磁转矩在静止坐标系中的空间向量;面对中高速运行电机速率,采用连续多磁链控制策略,将磁链轨迹从圆形平滑过渡到多边形,完成平滑的定子磁链闭环控制。实验结果表明,所提方法很好地控制了转矩波动与电流冲击,提高了牵引电机系统的整体控制能力,在长时间工作下依旧能保证地铁可靠运行。
Abstract:
The reduction of switching frequency causes large harmonic of stator flux linkage of metro traction motor , which cannot ensure its safe and stable operation.Therefore , under the constraint of low switching frequency , the stator flux control technology of traction motor based on continuous operation is proposed.The rotating magnetic field and the speed difference of the rotor are calculated , the equivalent circuit of the traction motor is created by using the stator resistance , electrical angular rate and other parameters , and the operation of the traction motor is determined ; the current and flux in the stator stationary coordinate system are regarded as variables to create a sliding mode observer , and the current observation value of the stator flux is obtained ; the indirect stator control method is used to enhance the low speed control capability of traction motor , and the space vector of stator flux and electromagnetic torque in static coordinate system is derived ; in the face of medium and high speed running motor speed , the continuous multi flux control strategy is adopted to smooth the flux track from circle to polygon and complete the smooth stator flux closed-loop control.The experimental results show that the proposed method can effectively control the torque fluctuation and current impact , improve the overall control capability of the traction motor system , and ensure the reliable operation of the subway under long working hours.

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相似文献/References:

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备注/Memo

备注/Memo:
收稿日期: 2022-10-14
作者简介:刘 尧 ( 1987- ),男,北京人,硕士,中级工程师,研究方向为地铁车辆车门、牵引、制动及网络维护和更新改造。
更新日期/Last Update: 2023-09-08