摘要
针对双级矩阵变换器(TSMC)驱动永磁同步电机(PMSM)系统低速区,基于反电动势的传统速度估算方法失效的问题,将脉振高频电压注入法首次拓展至此系统,通过注入高频电压信号并检测转子电流响应获取转速信息,实现低速下速度准确估算。分析了不同注入信号对该算法的影响,根据需求选择了IIR滤波器作为该算法滤波器,给出了滤波器传递函数和设计步骤,为系统实现提供了依据。实验结果验证了方案的可行性和有效性。
Aiming at the conventional speed observing failure of PMSM system driven by TSMC based on backelectromotive force（EMF）method under low-speed region, a fluctuating high-frequency voltage signal injection method was introduced to this system firstly. The speed was observed exactly through detecting the response of rotor current by the injection with high-frequency voltage signal at low speed. The influence on this method of different injection signal was analyzed, the transfer function of IIR filter selected as the filter for this algorithm was given and designed, which provided the basis for the experiment. The feasibility and effectiveness of this strategy are verified by the experimental results.
出处
《电气传动》
北大核心
2014年第12期21-25,66,共6页
Electric Drive
基金
国家自然科学基金(51307138)
教育部博士学科点专项科研基金资助课题(新教师类)(20126118120009)
陕西省自然科学基础研究计划项目(2014JQ7247)
电力设备电气绝缘国家重点实验室资助(EIPE14207)
陕西省重点学科建设专项资金资助项目(105-5X1201)
陕西省教育厅专项科研计划项目(12JK0562)
西安理工大学博士启动基金资助项目(105-211104)
关键词
双级矩阵变换器
永磁同步电动机
脉振高频电压注入法
低速控制
two-stage matrix converter（TSMC）
permanent magnet synchronous motor（PMSM）
fluctuating highfrequency voltage injection method
low speed control
