PROJECT TITLE :

An Improved Scheme for Extended Power Loss Ride-Through in a Voltage-Source-Inverter-Fed Vector-Controlled Induction Motor Drive Using a Loss Minimization Technique

ABSTRACT:

The power of an electrical drive to continue operation without tripping in spite of short-duration voltage sags or power offer interruptions is referred to as power failure ride-through capability. Critical production processes in industries need the drives to smoothly ride-through throughout momentary power interruptions. The reliability of the drive relies on the most period for which a complete power offer failure will be tolerated without method interruption. This paper presents a technique to extend the period of the ride-through in voltage-source-inverter-fed vector-controlled induction motor drives with a front-end diode bridge rectifier. The proposed method minimizes the losses in the system during the ride-through, thereby enabling a longer ride-through length. The tactic solely requires a modification of the management software and hence is straightforward to implement. This paper conjointly briefly describes two standard ways used for ride-through and compares the proposed method with the conventional methods to obviously bring out its advantage. Simulation study using MATLAB/PLECS verifies the effectiveness of the proposed methodology. Hardware implementation of the method on a thirty-kW induction machine indicates an extension of up to 34p.c within the ride-through duration with the proposed method, as compared with the standard methodology.