An Original Transformer and Switched-Capacitor (T & SC)-Based Extension for DC-DC Boost Converter for High-Voltage/Low-Current Renewable Energy Applications: Hardware Implementation of a New T & SC Boost Converter

Sanjeevikumar Padmanaban, Mahajan Sagar Bhaskar, Pandav Kiran Maroti, Frede Blaabjerg and Viliam Fedák
Additional contact information
Sanjeevikumar Padmanaban: Department of Energy Technology, Aalborg University, 6700 Esbjerg, Denmark
Mahajan Sagar Bhaskar: Department of Electrical Engineering, Qatar University, P.O. Box 2713 Doha, Qatar
Pandav Kiran Maroti: Department of Electrical and Electronics Engineering, Marathwada Institute of Technology, Aurangabad, Maharashtra 431028, India
Frede Blaabjerg: Centre for Reliable Power Electronics (CORPE), Department of Energy Technology, Aalborg University, 9100 Aalborg, Denmark
Viliam Fedák: Department of Electrical Engineering and Mechatronics, FEI TU of Košice, Letná 9, 04200 Košice, Slovakia

Energies, 2018, vol. 11, issue 4, 1-23

Abstract: In this article a new Transformer and Switched Capacitor-based Boost Converter (T & SC-BC) is proposed for high-voltage/low-current renewable energy applications. The proposed T & SC-BC is an original extension for DC-DC boost converter which is designed by utilizing a transformer and switched capacitor (T & SC). Photovoltaic (PV) energy is a fast emergent segment among the renewable energy systems. The proposed T & SC-BC combines the features of the conventional boost converter and T & SC to achieve a high voltage conversion ratio. A Maximum Power Point Tracking (MPPT) controller is compulsory and necessary in a PV system to extract maximum power. Thus, a photovoltaic MPPT control mechanism also articulated for the proposed T & SC-BC. The voltage conversion ratio ( V o / V in ) of proposed converter is (1 + k )/(1 ? D ) where, k is the turns ratio of the transformer and D is the duty cycle (thus, the converter provides 9.26, 13.88, 50/3 voltage conversion ratios at 78.4 duty cycle with k = 1, 2, 2.6, respectively). The conspicuous features of proposed T & SC-BC are: (i) a high voltage conversion ratio ( V o / V in ); (ii) continuous input current ( I in ); (iii) single switch topology; (iv) single input source; (v) low drain to source voltage ( V DS ) rating of control switch; (vi) a single inductor and a single untapped transformer are used. Moreover, the proposed T & SC-BC topology was compared with recently addressed DC-DC converters in terms of number of components, cost, voltage conversion ratio, ripples, efficiency and power range. Simulation and experimental results are provided which validate the functionality, design and concept of the proposed approach.

Keywords: DC-DC boost converter; transformer; switched capacitor; maximum power point tracking; renewable energy; high-voltage; low current (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2018
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (7)

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