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.