人工智能在电力电子电路故障诊断中的应用.pdf

31 3 ( ) Vol. 31 No. 3 2003 6 Journal of Fuzhou University( Natural Science) Jun. 2003 : 1000- 2243( 2003) 03- 0303- 05 , , ( , 350002) : . , , , . , . : ; ; : TM711 : A The application of artificial intelligence on fault diagnostics of power electronic circuit ZHANG Xuan- li, CAI Jin- din , LIU Qin - zhen ( Department of Electrical En ineerin , Fuzhou University, Fuzhou, Fujian 350002, China) Abstract: Based on neural network, a new on- line fault dia nosis method for power electronic circuits is presented. A neural BP network is founded, which is able to dia nose faults of three- phase rectifier effectively. The method is verified by both simulation and experiment. Keywords: fault dia nosis; neural network; power electronic circuit 1 , . , , , , , , . , , . BP , , , 1 BP Fi . 1 Three- laver BP neural ud , , , , . BP , 1, , x ( i = 1, 2, , n) ; ( ) ; i , y k . wij ; vj k . , , , , : 2003 - 02 - 12 : ( 1965- ) , , . : ( JB01035) 304 ( ) 31 , , , , [ 1] . , . 2 , , . . , , , , . , 2 . ud , , ud . 2 : [ 23] Fi . 2 Three- phase rectifier circuit