Battery supported PV Module integrated Cascaded High Gain Boost Converter for telecom tower power supply

Abstract

For areas, which are unapproachable to the grid, powering the telecom towers becomes a difficult task due to both environmental and system issues. Thus an environment-friendly, low maintenance and cost-effective electricity generation is the necessity of the time. PV fed system with battery as back-up which typically suits these applications. This paper proposes a PV Module integrated Cascaded High Gain Boost Converter (MICHGBC) which can do MPPT and boosts the voltage upto a usable level hybridized with battery to support Base Tran receiver Systems (BTS) load. The control scheme evacuates the maximum power during PV generation amidst insolation change presenting a slave current source, whereas, the battery maintains the output voltage and act as Master. The system sizing is presented in the paper, which decides the capacity of the panels to ensure the adequate charging of the batteries during the day time and battery size to consume the supply of power to BTS load. The performance of the system is evaluated under MATLAB/Simulink environment. Presented simulation results show close conformity with design and sizing done & also validates the effectiveness of the proposed control employed for operations of MICHGBC.