On-line induction motor drive diagnostic and control by expert systems

'T t i e p r e s e n t paper d e s c r i b e s t h e implementation of an i r r i I i ne Ciirrent Source I n v e r t e r Motor Dri vf: dlagncis ls and c o n t r o l , performed by an e x p e r t syst.c.rii. 'The e x p e r t system a r c h i t e c t l i r e o p e r a t e s i n two I r ~ v r ~ l s each one implemented on a personal rompiitr?~.. In t h e l e v e l 1 t h e d a t a a c q u i s i t i o n and moni tor i r ig f u n c t i o n s a r e performed, w h i l e l e v e l 2 prcicc1ssf.s a l l in format ion t o r e l e a s e th? d i a g n o s i s . Oiict: i.he d i a g n o s i s is reached , two p o s s i b l e a c t i o n arci allriwed: d i s p l a y a message t o t h e o p e r a t o r or semi a r e q u e s t o f c o n t r o l i n t e r v e n t i o n t o l e v e l 1. In the paper t h e advantages and low c o s t fpas I b i 1 i t y of such procedures due t o t h e st ,raighforward implementation are i l l u s t r a t e d .