1. RIT,Dept.of Electrical Engg.,Kottayam,Kerala,India
2. IIT Madras,Dept. of Electrical Engg.,Chennai,Tamilnadu,India.
3. Hitachi ABB Power Grids,Chennai,Tamilnadu,India.
4. Corporate R&D Division Bharat Heavy Electricals Limited,Hyderabad,Telengana,India