A new dc-dc converter with high voltage gain and low voltage stress on power switches

2015 International Conference on Electrical Systems for Aircraft, Railway, Ship Propulsion and Road Vehicles (ESARS) Pub Date : 2015-03-03 DOI:10.1109/ESARS.2015.7101515

Yaser Nabati, E. Babaei

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引用次数: 3

Abstract

In this paper, a new nonisolated dc-dc converter based on series connection of several number of diode-inductor basic units with high voltage gain and low voltage stress on power switches is proposed. These diode-inductor basic units (D-L) receive energy from input source in the time interval of turning on the switch and by delivering it to the voltage multiplier cells in the time interval of turning off the switch lead to increase voltage gain. Therefore, the converter is able to generate high voltage gain in low duty cycle. The proposed converter consists of higher voltage gain and lower voltage stress on power switches in comparison with the conventional converters. In addition, this converter includes of simple control system because there is only one power switch in it. In this paper, the operating of the proposed converter in three different modes of continuous conduction mode (CCM), discontinuous conduction mode (DCM) and boundary conduction mode (BCM) are investigated. Moreover, a method to design the nominal voltage and current values of used elements are presented. Finally, the accuracy performance of the proposed converter is verified through simulation results in PSCAD/EMTDC software program.

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一种电压增益高、电源开关电压应力小的新型dc-dc变换器

本文提出了一种基于若干二极管电感基本单元串联的新型非隔离dc-dc变换器，该变换器具有高电压增益和低电源开关电压应力。这些二极管电感基本单元(D-L)在打开开关的时间间隔内从输入源接收能量，并在关闭开关引线的时间间隔内将其传递给电压倍增器单元，以增加电压增益。因此，变换器能够在低占空比下产生高电压增益。与传统的变换器相比，该变换器具有更高的电压增益和更小的电源开关电压应力。此外，由于该变换器只有一个电源开关，因此控制系统简单。本文研究了该变换器在连续导通模式(CCM)、不连续导通模式(DCM)和边界导通模式(BCM)三种不同模式下的工作情况。此外，还提出了一种设计所用元件标称电压和电流值的方法。最后，通过PSCAD/EMTDC软件程序的仿真结果验证了所提变换器的精度性能。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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2015 International Conference on Electrical Systems for Aircraft, Railway, Ship Propulsion and Road Vehicles (ESARS)

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