Analysis of a Soft Switching High Voltage Gain DC/DC Boost Converter for PV Systems

Yıl 2018, Cilt: 4 Sayı: 2, 119 - 123, 27.06.2018

Sarah Al-hajm Mehmet Ucar

Öz

This paper presents an analysis of a non-isolated soft switching high voltage
gain DC/DC boost converter by using a coupling
inductor, voltage quadrupler and active clamp circuit for Photovoltaic (PV) systems. The main advantage of this
converter, coupled inductor with voltage quadrupler circuit is used to decrease
voltage stress in semiconductor switches and providing high voltage gain. Therefore, low
voltage valued and low on-resistance MOSFETs can be used to decrease
on-state losses. The reverse recovery and high frequency turn off losses is
reduced for achieving Zero-Current Switching (ZCS) in all diodes. Voltage spike
caused by leakage inductance of the coupled inductor is minimized by means of
the active clamp circuit. Thus, Zero-Voltage Switching (ZVS) turn on of all
MOSFET switches are achieved. The Perturb and Observe
(P&O) method is utilized in this study to obtain maximum power from the PV
system. In order to show the effectiveness of the converter,
PSIM simulations are realized under various irradiance cases. The conversion
efficiency is obtained about 95.97% at full load from the simulation results.

Anahtar Kelimeler

DC/DC converter, high voltage gain, coupling inductor, voltage quadrupler, ZCS, ZVS, PV system

Kaynakça

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