Using High-Control-Bandwidth FPGA and SiC Inverters to Enhance High-Frequency Injection Sensorless Control in Interior Permanent Magnet Synchronous Machine
Using High-Control-Bandwidth FPGA and SiC Inverters to Enhance High-Frequency Injection Sensorless Control in Interior Permanent Magnet Synchronous Machine
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DOI：
10.1109/access.2018.2858199
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发表时间：
2018
期刊：
影响因子：
3.9
通讯作者：
Wei Qian;Xi Zhang;Fanning Jin;Hua Bai;D. Lu;Bing Cheng
中科院分区：
文献类型：
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作者：
Wei Qian;Xi Zhang;Fanning Jin;Hua Bai;D. Lu;Bing Cheng
提出了一种提高永磁同步电动机调速精度、拓宽调速范围的高频注入式无速度传感器控制方法。在50~100 kHz碳化硅（SiC）基三相逆变器下，注入频率可达2 kHz。除了高开关频率之外，现场可编程门阵列（FPGA）还用于在实现面向场的控制算法时实现高控制带宽（>200 kHz）。从理论上解释了无感控制中高开关频率和高控制带宽的好处，即，通过使用SiC为注入频率留下足够的空间，同时通过使用FPGA调谐降低噪声信号比。实验结果表明，该方法有效地提高了位置估计精度和喷油频率，使HFI无速度传感器控制下的电机转速范围从传统的Si+DSP设计的0 ~ 500 r/min扩展到SiC+FPGA设计的0~1200 r/min。
A high-frequency injection (HFI) sensorless control for interior permanent magnet synchronous motors with enhanced precision and widened speed range is proposed in this paper. The injection frequency reaches up to 2 kHz under a 50~100 kHz silicon carbide (SiC)-based three-phase inverter. In addition to the high switching frequency, the field-programmable gate array (FPGA) is utilized to achieve high control bandwidth (>200 kHz) when implementing the field-oriented control algorithm. The benefits of high switching frequency and high control bandwidth in senseless controls are explained theoretically, i.e., leaving enough room for the injection frequency by using SiC while tuning down the noise-to-signal ratio by using the FPGA. Experimental results verified that such manners improved the position estimation and lifted the injection frequency effectively, which further allows us to widen the motor speed range under the HFI sensorless control from 0 to 500 r/min with the conventional Si+DSP design to 0~1200 r/min with the proposed SiC+FPGA.