ABSTRACT

The faults diagnosis of Induction Motor (IM) is a required field of the research area grown in recent years. Industrialists and researchers predominately use this interest as a result of improvement in control circuits for IM. This paper proposes a new approach for the detection of Broken Rotor Bar (BRB) fault in a three-phase Induction Motor Drive (IMD) using one of the signals Discrete Wavelet Transform (DWT), where the machine is controlled by Direct Torque Control (DTC). The amplitude and frequency components are extracted by Fast Fourier Transform (FFT), and the DWT decomposes the signal. Energy eigenvalue of stator current of the signal calculates the severity of the fault and gives a better solution for indicating the failure. DTC is adopted for advisable control techniques in the industrial drives system to preserve the excellent performance in variable torque control applications. The effectiveness of the above method is evaluated by using MATLAB/SIMULINK and experimental tests demonstrate the superior performance of the proposed technique.

摘要

感应电机（IM）的故障诊断是近年来发展起来的研究领域的必修领域。工业家和研究人员主要利用这种兴趣作为 IM 控制电路改进的结果。本文提出了一种使用离散小波变换 (DWT) 信号之一检测三相感应电机驱动器 (IMD) 中转子断条 (BRB) 故障的新方法，其中机器由直接转矩控制 (Direct Torque Control) 控制。故障码）。通过快速傅立叶变换 (FFT) 提取幅度和频率分量，然后 DWT 对信号进行分解。该信号定子电流的能量特征值计算了故障的严重程度，并为指示故障提供了更好的解决方案。在工业驱动系统中采用DTC作为可取的控制技术，以保持在可变转矩控制应用中的优异性能。通过使用 MATLAB/SIMULINK 评估上述方法的有效性，实验测试证明了所提出技术的优越性能。