Induction motor stator turn-to-turn short circuit fault diagnosis method and device in combination with recurrence plot

• Main Authors: FANG ZICHAO, ZHANG ZHIGAO, YANG FAN, MA QICHAO, NI JIWEN, YE LIWEN, XI FAGANG, HE XINLIN, GONG DENGWEI, LIU CHONG, LIU HUIJIE, YANG JINSONG, LI CHUNLI
• Format: Patent
• Language: Chinese; English
• Published: 14.06.2024
• Subjects: CALCULATING; COMPUTER SYSTEMS BASED ON SPECIFIC COMPUTATIONAL MODELS; COMPUTING; COUNTING; ELECTRIC DIGITAL DATA PROCESSING; MEASURING; MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES; PHYSICS; TESTING

The invention discloses a recurrence plot-combined induction motor stator turn-to-turn short circuit fault diagnosis method and device, and the method comprises the steps: obtaining the three-phase stator current of a three-phase induction motor in real time, and obtaining a real-time recurrence plot; taking the real-time recursion plot as input, and utilizing a motor turn-to-turn short circuit CNN diagnosis model to diagnose a motor turn-to-turn short circuit state; wherein the motor turn-to-turn short circuit CNN diagnosis model is constructed by using a convolutional neural network to perform learning training on a multi-working-condition recurrence plot sample set under different turn-to-turn short circuit ratios, different loads and power supply imbalance combinations based on the multi-working-condition recurrence plot sample set. According to the technical scheme, the influence of load fluctuation and power supply voltage imbalance can be eliminated during turn-to-turn short circuit diagnosis, and the