西安交通大学电气工程学院,西安,710049
网络首发:2009-12-10,
纸质出版:2009
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李彪, 刘新正, 李黎川. 具有低通滤波的改进电压型磁链观测器[J]. 西安交通大学学报, 2009,43(12):91-95.
Modified Algorithm for Voltage Module Flux Estimation with Lowpass Filter[J]. 2009, 43(12): 91-95.
针对现有算法在PWM波反电动势输入时磁链观测精度很差的问题
采用了一种改进的电压型磁链观测算法
在现有算法的基础上增加了一个低通滤波器和一个用于补偿低通滤波器引起的幅值和相位误差的补偿环节.根据所采用的低通滤波器形式
利用时间相量分析方法
推出了滤波误差补偿公式
并在不同的同步速情况下分析比较
确定最佳补偿系数.仿真结果证明
新算法在PWM 波反电动势输入情况下仍具有很高的磁链观测精度
可以有效地消除积分漂移误差.将新算法用于一永磁同步电动机无位置传感器控制系统
仿真证明了新算法的可行性及有效性.
To improve the poor precision of flux estimation of the existing algorithm under the PWM wave input of electromotive force(EMF)
a modified stator flux estimation algorithm is adopted. Based on the modification of the existing algorithm
a lowpass filter(LPF)and a compensation unit are used. The compensation unit is for compensation of the amplitude and phase error caused by the LPF. The compensation formula is derived with time phasor method. The optimal compensation coefficient is ascertained via analyses at various synchronous speed. The simulation results show that the new algorithm can effectively eliminate the integrator drift with higher precision of flux estimation under permanent magnet synchronous motor wave input of EMF. The effectiveness of the new algorithm in a sensorless control of permanent magnet synehronous motor is also verified via simulation.
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WANG Yu,DENG Zhiquan,WANG Xiaolin.A novel algorithm of motor flux estimation[J].Proceedings of the CSEE,2007,27(6):39-43.
ZHANG Xing,QU Wenlong,LU Haifeng.A new integrator for voltage model flux estimation in a digital DTC system[C]∥2006 IEEE Region 10 Conference. Piscataway, NJ,USA:IEEE,2006:1-4.
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HE Zhiming,LIAO Yong,XIANG Dawei. Improvement of low-pass filter algorithm for stator flux estimator[J]. Proceedings of the CSEE,2008,28(18):61-65.
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韦立祥,刘从伟,孙旭东,等. 一种消除电压型磁链观测器中直流偏置误差的新方法[J]. 清华大学学报(自然科学版),2001,41(9):51-54.
WEI Lixiang, LIU Congwei,SUN Xudong, et al. New integral error correction method for rotor flux identification of AC drives[J]. Journal of Tsinghua University(Sci Tech),2001, 41(9): 51-54.
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永磁同步电机的非线性自适应解耦控制. 西安交通大学学报,2009,43(8):101-106.
基于改进观测器的分数阶超混沌Chen系统广义同步. 西安交通大学学报,2008,42(2):238-242.
同步一类结构部分未知混沌系统的自适应非线性观测器. 西安交通大学学报,2007,41(10):1165-1169.
基于状态观测器的分数阶统一混沌系统的同步控制. 西安交通大学学报,2007,41(4):497-500.
基于磁链与转矩特性的开关磁阻电机建模研究. 西安交通大学学报,2007,41(2):214-218.
一种永磁直线电机的永磁体阵列设计. 西安交通大学学报,2007,41(3):353-357.
微型电动车用永磁无刷电机转矩脉动控制研究. 西安交通大学学报,2007,41(5):576-579.
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