Design of a multistage 0.1/12 kV DC-DC matrix converter using Cockcroft-Walton voltage multiplier topology

2015 IEEE International WIE Conference on Electrical and Computer Engineering (WIECON-ECE) Pub Date : 2015-12-01 DOI:10.1109/WIECON-ECE.2015.7443925

M. Razzak, Sajib Chakraborty, Zaima Tasneem

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引用次数: 5

Abstract

A transformer-less high-performance step-up DC-DC converter based on the Cockcroft-Walton (CW) voltage multiplier is presented in this paper. The proposed converter is suitable for low-input DC generation systems application. A low input DC voltage is boosted up in the DC-DC converter and then inverted through the proposed circuit. An n-stage CW voltage multiplier then converts the obtained AC voltage to a high DC output voltage. This circuit provides continuous input current with low ripple, high voltage gain, low switching losses, low stress on the switches, diodes and capacitors as well as improves the efficiency. The proposed circuit has two power switches which operate at two independent frequencies. One operates at high frequency to enable the use of smaller inductor while the other operates at relatively low frequency according to the desired output voltage ripple. A prototype of the proposed converter has been simulated in PSIM and finally the results are presented and discussed to confirm the effectiveness of this proposed converter.

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基于Cockcroft-Walton电压乘法器拓扑结构的多级0.1/ 12kv DC-DC矩阵变换器设计

提出了一种基于Cockcroft-Walton (CW)电压乘法器的无变压器高性能升压DC-DC变换器。该变换器适用于低输入直流发电系统。低输入直流电压在DC-DC变换器中升压，然后通过所提出的电路进行反转。然后，一个n级连续波电压倍增器将得到的交流电压转换为高直流输出电压。该电路提供低纹波、高电压增益、低开关损耗、低开关、二极管和电容器的应力以及提高效率的连续输入电流。所提出的电路有两个工作在两个独立频率的电源开关。一个工作在高频率，以便使用较小的电感，而另一个工作在相对较低的频率，根据所需的输出电压纹波。在PSIM中对该转换器的原型进行了仿真，最后给出了仿真结果并进行了讨论，以验证该转换器的有效性。

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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来源期刊

2015 IEEE International WIE Conference on Electrical and Computer Engineering (WIECON-ECE)

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