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首页> 外文期刊>EPE Journal: European Power Electronics and Drives >Control with high performances based DTC strategy: FPGA implementation and experimental validation
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Control with high performances based DTC strategy: FPGA implementation and experimental validation

机译：基于高性能的DTC策略控制：FPGA实施和实验验证

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摘要

This paper aims to improve the induction motor performances using a modified Direct Torque Control (DTC). The DTC is featured by its simple structure and fast dynamic response. Also, it does not require a speed sensor and it is less dependent on the motor parameters. However, the basic handicaps of this method are the torque ripples and the current distortions due to the presence of the hysteresis controllers. This paper aims; firstly, to replace the hysteresis controllers and the switching table by a fuzzy logic system in order to overcome these handicaps. Furthermore, the sampling frequency is another parameter which must be investigated to reduce the commutation losses and the harmonic stator current waves. The second purpose of this paper is to reduce the execution time using a Field Programmable Gate Array (FPGA). The FPGA is able to execute the Fuzzy DTC (FDTC) with a higher sampling frequency, thanks to its parallel processing relative to the Digital Signal Processor (DSP). The FDTC model is verified by simulation using system generator tool and validated by experimentation utilizing an FPGA Virtex 5. Thus, excellent performances at low processing time are obtained using the Xilinx FPGA Virtex 5.
机译：本文旨在使用改进的直接扭矩控制（DTC）来改善感应电动机性能。 DTC以其简单的结构和快速动态响应为特色。此外，它不需要速度传感器，并且较少依赖于电动机参数。然而，该方法的基本残障是由于滞后控制器的存在而导致的扭矩涟漪和电流失真。本文的目标;首先，通过模糊逻辑系统更换滞后控制器和切换表，以克服这些障碍。此外，采样频率是必须研究的另一个参数，以减少换向损耗和谐波定子电流波。本文的第二个目的是使用现场可编程门阵列（FPGA）来减少执行时间。由于其相对于数字信号处理器（DSP）的并行处理，FPGA能够以更高的采样频率执行模糊DTC（FDTC）。通过使用系统发生器工具进行仿真验证FDTC模型，并通过利用FPGA Virtex 5进行实验验证。因此，使用Xilinx FPGA Virtex 5获得低处理时间的优异性能。

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