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RISS 인기검색어
- 검색키워드
- 저자 : Rani Nisha C. (검색결과 2 건)
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Design and Implement a Quasi-resonant Cuk Converter for Photovoltaic Applications
Nisha C. Rani,Amuthan Nallathambi 대한전자공학회 2023 IEIE Transactions on Smart Processing & Computing Vol.12 No.5
Solar energy has emerged as a growing source of alternative electrical energy in the new century because of the reliability, improvements, and efficiency in photovoltaic (PV) systems. In a PV system, maximum power point tracking (MPPT) is a significant feature because a set of conditions in PV system power is maximized, and thereby, array efficiency increases. In this article, a quasi-resonant Cuk-converter (QRCC)-based voltage source inverter (VSI) is proposed for application to large-scale photovoltaic generators. The quasi-resonant Cuk converter is built on zero voltage transition (ZVT) and zero current transition (ZCT) strategies, designing an optimization technique based on a VSI that eliminates harmonics. Through simulation related to MPPT controllers, the QRCC is achieved, feeding the load through the VSI to minimize harmonics. The results show that the proposed VSI, based on Harris hawks optimization, reduces network harmonics, and those results are compared to the quasi-resonant single-ended primary inductance converter (QRSEPIC).
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A Novel Double Frequency SEPIC Converter with Improved Transient Characteristics and Efficiency
Vijayalakshmi S.,Marimuthu M.,Jayakumar N.,Vighneshwari B. Devi,Paranthagan B.,Rani Nisha C.,Shenbagalakshmi R. 대한전기학회 2022 Journal of Electrical Engineering & Technology Vol.17 No.2
A novel double frequency SEPIC converter is discussed in this paper. Effi ciency, static and dynamic characteristics of the dc to dc power converters are the concerned factors in power electronics. In order to improve the above factors, switching frequency play a vital role in converters. Hence, include High switching frequency in the converter can improve the dynamic characteristics, but it reduces the effi ciency. In other words, put in low switching frequency in the converter may result in better effi ciency but produces poor dynamic characteristic. In this concern double-frequency SEPIC converter is proposed. This SEPIC dc-dc converter consists of two SEPIC cells: one functions at high switching frequency, and other functions at low switching frequency. The proposed SEPIC converter reveals enhanced steady state and transient characteristic than the other single frequency SEPIC converter and produces high effi ciency also. The results of simulation and hardware prove that the anticipated converter extremely progresses the effi ciency and displays more or less equal the same dynamics as the traditional high frequency SEPIC converter.
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