A literature review on industrially accepted MPPT techniques for solar PV system (original) (raw)
Solar energy is a clean renewable energy and it is available around 89,000 TW on the earth surface. To get maximum power from a solar PV system with minimum power transfer loss is one of the main design objectives of an energy transferring network. Power electronic devices perform a very important character for an efficient PV power tracking system control and either incorporates to transfer the generated power to the ac/dc grid or battery storage system. In this case the duty of the power electronics devices used in PV system is to track maximum power point under different operating conditions of environment, so that power tracking efficiency of solar PV system can be improved. This paper encapsulates based the on performance comparisions on the behavior of MPP under uniform and nonuniform operating conditions and selects the optimum duty cycle for industrially accepted MPPT techniques with their algorithm. 1. INTRODUCTION Solar PV (SPV) energy is one of the rapidly growing and most encouraging renewable energy sources in the world. In last three years, solar capacity has been increased by 370% from around 2.6GW to more than 12.2GW in India [1] alone. Solar energy is the most favourable energy resource out of all available renewable energy sources worldwide. This energy comes from endless sun energy. It has gain popularity worldwide in comparison with other renewable energy resources because it can be directly converted into electrical energy. The conversion of solar energy into electrical energy involves photovoltaic material. Earlier solar PV was very costly, but because of mass-scale production and improvement in technology, now it has become affordable to most of the consumer. These days the average cost of solar PV installation in India is around Rs.33, 000/-per kW (large scale). To address the issues of the cost of finance and cost of technology, 60 countries have signed the International Solar Alliance (ISA) agreement on 11 March 2018 in New Delhi. This alliance facilitates mutual cooperation for solar energy uses among more than 121 countries [2]. The solar photovoltaic cells have poor conversion efficiency. Moreover, the efficiency degraded further with an increase in temperature because of the negative temperature coefficient of the PV cell. The output of PV systems also affected by solar radiation intensity [3,4]. Light trapping, antireflection techniques and front surface optical enhancement of solar PV generation improve the output of the system [5]. These days the highest commercially available SPV conversion efficiency is 25.73% [6]. These cells are designed with hetero-junction intrinsic thin layer with pillar structure.
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