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首页> 外文期刊>IEEE Transactions on Industrial Electronics >Analysis and Compensation of Sampling Errors in TPFS IPMSM Drives With Single Current Sensor
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Analysis and Compensation of Sampling Errors in TPFS IPMSM Drives With Single Current Sensor

机译：具有单电流传感器的TPFS IPMSM驱动器中采样误差的分析和补偿

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摘要

The current reconstruction strategies using single current sensor in the motor drives are widely researched. However, the sampled currents do not represent the average values within the modulation period, especially for the asymmetric modulation or asymmetric sampling solutions. This is due to the following two reasons: 1) The detected current values obtained at different sampling points are utilized to calculate the three-phase currents; and 2) the detected instantaneous currents are applied to estimate the average current values. In this letter, the current change rates under different action vectors are estimated to compensate these errors in a three-phase four-switch interior permanent magnet synchronous motor (IPMSM) drive with single current sensor. The effectiveness of the proposed strategy is verified by experimental results on a 5-kW IPMSM motor prototype, which shows that the current reconstruction errors are reduced after compensation.
机译：广泛研究了在电动机驱动器中使用单个电流传感器的电流重建策略。但是，采样电流并不代表调制周期内的平均值，特别是对于不对称调制或不对称采样解决方案。这是由于以下两个原因：1）利用在不同采样点获得的检测到的电流值来计算三相电流； 2）施加检测到的瞬时电流以估计平均电流值。在这封信中，估计了在不同作用矢量下的电流变化率，以补偿具有单个电流传感器的三相四开关内部永磁同步电动机（IPMSM）驱动器中的这些误差。通过在5kW IPMSM电机原型上的实验结果验证了所提出策略的有效性，该结果表明补偿后电流重构误差得以减小。

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