Symmetric Extendable Ultra High Step-Up Non-Isolated DC-DC Converter

2019 10th International Power Electronics, Drive Systems and Technologies Conference (PEDSTC) Pub Date : 2019-02-01 DOI:10.1109/PEDSTC.2019.8697285

Vafa Marzang, Peyman Alavi, Morteza Dezhbord, S. Hosseini, N. Rostami

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引用次数: 11

Abstract

In this paper a high step up non isolated DC-DC converter with extendable topology is proposed. This converter is symmetric and by using this structure it can be possible to achieve high voltage gain in low duty cycle range. This converter consists of m + n+ 2 Active Passive Inductor Cell (APIC) and a Voltage Multiplier Cell (VMC). In addition to increasing voltage gain, the VMC decreases voltage stress on the switches and diodes. Operational modes and steady state analysis of proposed converter will be discussed completely, also voltage gain and voltage stress on the switches and diodes will be formulated. Different components will be designed for example output capacitor will be designed in order to decrease output voltage ripple. Voltage gain and voltage stress on the switches will be compared with related structure to illustrate advantages of proposed converter. In order to verify theoretical analysis of proposed converter will be simulated in PSCAD and results of this simulation will be analyzed completely. In this simulation input voltage is equal to 20V and provides 500 W power in output

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对称可扩展超高升压非隔离DC-DC变换器

本文提出了一种具有可扩展拓扑结构的高升压非隔离DC-DC变换器。这种转换器是对称的，通过使用这种结构，可以在低占空比范围内实现高电压增益。该变换器由m + n+ 2个有源无源电感单元(APIC)和电压倍增器单元(VMC)组成。除了增加电压增益外，VMC还降低了开关和二极管上的电压应力。本文将全面讨论该变换器的工作模式和稳态分析，并对开关和二极管上的电压增益和电压应力进行阐述。不同的组件将被设计，例如输出电容将被设计以减少输出电压纹波。将电压增益和开关上的电压应力与相关结构进行比较，以说明所提出变换器的优点。为了验证所提出的变换器的理论分析，将在PSCAD中进行仿真，并对仿真结果进行全面分析。在本仿真中，输入电压为20V，输出功率为500w

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2019 10th International Power Electronics, Drive Systems and Technologies Conference (PEDSTC)

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