Design and implementation of a novel nonisolated DCDC converter with high voltage gain and low voltage stress

Seyed Mohammad Sadeghzadeh ^{*} ^{1}, Hamed Javaheri Fard^{1} 
1 Shahed University 

Abstract: (1726 Views) 
In this paper, a nonisolated high stepup DCDC converter with an interleaved structure is presented that is suitable for photovoltaic energy conversion systems. In the proposed topology, coupled inductors and the switched capacitor cells have been used to increase the output voltage. Achieving this purpose is in a situation where no extreme duty cycle or high turns ratio will be required. Due to the use of the interleaved structure and equal current division in two phases, the current ripple is reduced. Also, since the voltage stress of the switches is lower than the output voltage, selecting the lowvoltage rated switches and small R_{ds} (On) reduces the conduction loss. Other advantages of the proposed converter include providing the softswitching conditions for the power switches and alleviating the reverse recovery problem. Recycling of the leakage energy due to the presence of the coupled inductors and no need for the clamp circuits is an important feature of the proposed converter. The experimental results, using prototype 350 W, 18 V input, and 400 V output, verify the effective performance of the proposed converter. 
Article number: 5 
Keywords: DCDC converter, interleaved structure, switched capacitor, coupled inductor, high voltage gain 

FullText [PDF 1789 kb]
(337 Downloads)

Type of Study: Research 
Received: 2021/11/12  Accepted: 2022/04/9  Published: 2022/04/30





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Sadeghzadeh S M, Javaheri Fard H. Design and implementation of a novel nonisolated DCDC converter with high voltage gain and low voltage stress. ieijqp 2022; 11 (2) : 5 URL: http://ieijqp.ir/article1866en.html
