Transcription of Issues in VFD Applications - APQI
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Issues in VFD Applications - APQI
Issues in VFD Applications Assistant Professor in Electrical Engg., , Anna University, Chennai -25 E-Mail: Cell: 9841363144 Contents Introduction Applications Issues Technological solutions Case studies 2 The Motor market Nearly 5 Lakhs LT AC motors get added to the Indian industry use, each year The overall market size for rotating machines is `6300 crores in India- (IEEMA year 2011) India s import of motors is `690 crores and export is `115 crores worth- (IEEMA year-2011) The world motor market is set to grow by 30% in the next 10 years with the advent of new generation IE3 (premium efficiency)
Scalar or Vector Scalar Drive • Constant V/f pattern • No true torque control • Not suitable for <1:5 speed • if your application needs accurate control below 10Hz, ...
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