Article,

New Model Variable Frequency Transformer (NMVFT) – A Technology for V/f Control of Induction Motors

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International Journal on Electrical and Power Engineering IJEPE,, 2 (1): 5 (February 2011)

Abstract

Variable frequency transformer (VFT) is used as a controllable bidirectional transmission device that can transfer power between asynchronous networks and functionally is similar to back-to-back HVDC. This paper describes the basic concept of a New Model Variable Frequency Transformer (NMVFT). NMVFT is a new technology which is used for v/f control of induction motors. A digital simulation model of NMVFT and its control system are developed using MATLAB. The out power thus generated in v/f mode has been practically verified for the speed control of a three-phase induction motor. Thus constant speed-torque characteristics were achieved.

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