Transformer Coupled Dual Input Converter for Motor Driving Application

Journal: GRENZE International Journal of Engineering and Technology
Authors: Sreelakshmi C S, Hridhya Mereena George
Volume: 3 Issue: 2Special Issue
Grenze ID: 01.GIJET.3.2Special Issue Pages: 1-10

Abstract

A two-stage stand-alone scheme consisting of a transformer coupled dual input converter (TCDIC) followed by a conventional three phase full-bridge inverter used for motor driving applications in the area of farming aiming for rural deployment is proposed in this paper. Here battery is used as the energy storage element. This paper is proposed to address the issues involved with the existing system. Solar photovoltaic (PV)- based standalone systems have evolved as a promising solution to the issue of electrification in areas where the grid is not available. The major challenges that are faced by the existing system are : 1) to extract the maximum PV power from the array; 2) to protect the battery from overcharging and over discharging; 3) to covert dc to ac in order to fed the motor. These objectives were satisfied by employing a minimum of three converter stages. This will leads to reduction in reliability and efficiency of the system. The dedicated converter cannot be utilized properly if the PV power remains unavailable for more than half a day. The use of additional converters will increase the component count. The TCDIC can be used to realize maximum power point tracking and proper battery charge control can be maintained. A suitable control strategy for the proposed TCDIC is devised .Simple and efficient control structure is developed for proper operating mode selection and smooth transition between different possible modes. A three phase inverter feeds the motor which is connected at the load terminal. This paper is focused towards the motor driving application. The operation of the existing scheme is verified by using Mat lab simulation studies.

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