Improved sensorless control of a permanent magnet machine using fundamental pulse width modulation excitation
Improved sensorless control of a permanent magnet machine using fundamental pulse width modulation excitation
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DOI：
10.1049/iet-epa.2010.0108
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发表时间：
2011-05
影响因子：
1.7
通讯作者：
Yahan Hua;M. Sumner;G. Asher;Q. Gao;K. Saleh
中科院分区：
文献类型：
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作者：
Yahan Hua;M. Sumner;G. Asher;Q. Gao;K. Saleh
介绍了一种在包括零频在内的宽转速范围内估算永磁同步电机(PMSM)电机转子位置的新方法。该方法根据标准脉宽调制(PWM)序列测量电机电流导数，以估计转子位置。不需要额外的信号注入或单独的测试向量，尽管当出现窄的PWM电压向量时需要修改。为了提高位置估计的质量和减小电流失真，提出了三种位置估计的补偿技术。对一台4kW永磁同步电机的无位置传感器速度和位置控制的实验结果验证了该方法的有效性。
A new method to estimate the rotor position of permanent magnet synchronous motor (PMSM) drives over a wide speed range, including zero frequency is introduced. The method measures the motor current derivative in response to the standard pulse width modulation (PWM) sequence to estimate rotor position. No additional signal injection or separate test vectors are required although modification is needed when narrow PWM voltage vectors occur. Three compensation techniques are proposed to improve the quality of the position estimation and reduce current distortion when narrow vectors are used for position estimation. Experimental results for sensorless speed and position control of a 4 kW PMSM verify the effectiveness of the proposed techniques.