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首页> 外文期刊>Journal of power electronics >Predictive DTC-PWM of PMSM based on zero voltage and 12 voltage vectors
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Predictive DTC-PWM of PMSM based on zero voltage and 12 voltage vectors

机译：基于零电压和12个电压矢量的PMSM预测DTC-PWM

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This paper presents a novel predictive direct torque control (PDTC) for permanent magnet synchronous motors (PMSMs) using the zero voltage vector and a selected voltage vector from the 12 available voltage vectors. The 12 voltage vectors consist of 6 effective voltage vectors and 6 combinational voltage vectors to improve control performance. To select the optimum voltage vector for each of the operating conditions, the predictive flux and torque at the zero voltage vector that consider both the back EMF (electromotive force) and the decoupling effect, are used to determine the voltage vector. The PWM (pulse width modulation) duty ratio to reduce torque and flux ripples can be determined by three factors: the reference flux and torque using a zero voltage vector, the predictive flux and torque using a zero voltage vector, and the predictive flux and torque using a selected voltage vector. Due to the linear ratio of the predictive torque and the flux errors in the next sampling, the proper duty ratio to reduce ripples can be easily obtained by the zero voltage and selected voltage vectors. To further reduce ripples, an additional 6 combinational voltage vectors are used, which are the result of combining the duty ratios of the adjacent two effective voltage vectors. Furthermore, a multi-level flux hysteresis band is designed to select the optimal voltage vector according to the operating conditions among the available 12 voltage vectors. The proposed PDTC scheme is verified by simulation and experiments using a practical 1 [kW] PMSM. In both the simulation and experiments results, the proposed PDTC scheme shows advanced control performance with reduced torque and flux ripples and reduced steady state error.
机译：本文介绍了一种用于永磁同步电动机（PMSMS）的新型预测直接扭矩控制（PDTC），使用零电压矢量和来自12个可用电压矢量的选定电压矢量。 12个电压矢量包括6个有效电压矢量和6个组合电压矢量，以提高控制性能。为了为每个操作条件选择最佳电压矢量，用于考虑反电动势（电动势）和去耦效果的零电压矢量的预测磁通和扭矩用于确定电压矢量。降低扭矩和焊剂涟漪的PWM（脉冲宽度调制）占空比可以通过三个因素确定：使用零电压矢量，使用零电压矢量的预测磁通和扭矩以及预测磁通和扭矩来确定参考磁通和扭矩使用所选电压矢量。由于预测扭矩的线性比率和下一个采样中的磁通误差，可以通过零电压和所选择的电压矢量容易地获得减少纹波的适当占空比。为了进一步减少纹波，使用另外的6个组合电压矢量，这是组合相邻的两个有效电压矢量的占空比的结果。此外，设计多级磁磁磁带频带以根据可用12电压矢量中的操作条件选择最佳电压矢量。通过使用实用的1 [kW] PMSM通过模拟和实验验证所提出的PDTC方案。在仿真和实验结果中，所提出的PDTC方案显示了具有减小的扭矩和磁通涟漪和降低稳态误差的先进控制性能。

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