| 基于直接转矩控制技术的异步电机驱动系统两种容错方案研究 |
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| 引用本文： | 张兰红,胡育文,黄文新.基于直接转矩控制技术的异步电机驱动系统两种容错方案研究[J].南京航空航天大学学报,2005,37(1):34-39. |
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| 作者姓名： | 张兰红 胡育文 黄文新 |
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| 作者单位： | 1. 南京航空航天大学航空电源航空科技重点实验室,南京,210016;盐城工学院电气工程系,盐城,224003
2. 南京航空航天大学航空电源航空科技重点实验室,南京,210016 |
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| 基金项目： | 国家自然科学基金 (5 0 1 770 1 4)资助项目，教育部博士学科点专项科研基金 (2 0 0 1 0 2 870 0 1 )资助项目 |
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| 摘 要： | 对采用直接转矩控制技术的异步电机驱动系统进行了两种容错方案研究。对功率开关无驱动故障容错后，方案1系统重构为四开关两相运行系统，方案2系统重构为四开关三相运行系统。研究了四开关系统中磁链和转矩的观测方法。分析了仅有的4个有效电压矢量对磁链和转矩变化所产生的影响．提出了四开关系统直接转矩控制中磁链和转矩的控制方案。对两种容错方案的特点进行了分析比较。仿真与实验结果证明了两种容错方案的有效性。
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| 关 键 词： | 异步电机 直接转矩控制（DTC） 驱动 故障容错 |
| 文章编号： | 1005-2615(2005)01-0034-06 |
| 修稿时间： | 2004年6月30日 |
Two Tolerant Schemes for Induction Machine Drive System Based on DTC Strategy |
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| ZHANG Lan-hong ,HU Yu-wen,Huang Wen-xin.Two Tolerant Schemes for Induction Machine Drive System Based on DTC Strategy[J].Journal of Nanjing University of Aeronautics & Astronautics,2005,37(1):34-39. |
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| Authors: | ZHANG Lan-hong HU Yu-wen Huang Wen-xin |
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| Institution: | ZHANG Lan-hong 1,2,HU Yu-wen1,Huang Wen-xin1 |
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| Abstract: | Two tolerant schemes for the induction machine drive s ys tem with a direct torque control (DTC) technique are investigated. After the mis firing fault on one of the power switches is detected and the fault inverter leg is isolated, the drive system is reconfigurated as a four-switch two-phase o perating system in the first scheme, and a four-switch three-phase operating s ystem in the second scheme. Observe methods of flux linkage and torque in four- switch systems are studied. Influence of the four active voltage vectors on flux linkage and torque variation is analyzed. Control schemes for the flux linkage and torque in DTC of four-switch systems are proposed. Features of two tolerant schemes are analyzed and compared. Simulation and experimental results verify t he validity of two tolerant schemes. |
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| Keywords: | induction machine direct torque control(DTC) drive fault tolerance |
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