Switching Angle Fitting-Based Delay Compensation With IPLL for IPMSM Sensorless Drives Under SHEPWM
Switching Angle Fitting-Based Delay Compensation With IPLL for IPMSM Sensorless Drives Under SHEPWM
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DOI：
10.1109/tte.2023.3276878
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发表时间：
2024-03
影响因子：
7
通讯作者：
Han Zhang;Wenrui Liang;Linyu Gao;Zhe Chen;Hui Zhang
中科院分区：
文献类型：
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作者：
Han Zhang;Wenrui Liang;Linyu Gao;Zhe Chen;Hui Zhang
在中高速轨道交通应用中，为了最大限度地利用直流母线电压，优化诱导谐波性能，实现了特定消谐脉宽调制(SHEPWM)。在低开关频率下，考虑到计算延迟效应的进一步减小，提出了SHEPWM中带延迟补偿的开关角拟合法。另外，常规锁相环在加减速条件下不能保证位置提取精度，位置估计延迟增加了锁相环的输入误差。然后，设计了基于SAF的改进锁相环延迟补偿(IPLL)来消除位置估计误差。最后，以3.7kW内置式永磁同步电机(IPMSM)无位置传感器驱动平台为例，验证了该控制策略的有效性。
In the medium- and high-speed range of rail-transit applications, to maximize utilization of the dc bus voltage and optimize the induced harmonic performance, selective harmonic elimination pulsewidth modulation (SHEPWM) is implemented. Under low switching frequency, considering a further reduction in the calculation delay effect, a switching-angle fitting (SAF) method is proposed with delay compensation in SHEPWM. In addition, the conventional phase-locked loop (PLL) cannot guarantee position extraction accuracy under acceleration and deceleration conditions, and the delayed estimated position increases the input error of the PLL. Then, SAF-based delay compensation with an improved PLL (IPLL) is designed to eliminate the position estimation error. Finally, a 3.7-kW interior permanent magnet synchronous machine (IPMSM) sensorless drive platform is used to verify the effectiveness of the proposed strategy.