A Dynamic Sampling Method to Achieve Noise-Free Sampling for High-Frequency Converters

被引：0

作者：

He, Zhou ^{[1
]}

Ding, Hongfa ^{[1
]}

Zhang, Ziqi ^{[1
]}

Wu, Jiayang ^{[2
]}

Zhang, Dandi ^{[1
]}

Shao, Jiannan ^{[1
]}

Xiao, Ziheng ^{[3
]}

Yao, Zhigang ^{[3
,4
]}

Tang, Yi ^{[5
]}

机构：

[1] Huazhong Univ Sci & Technol, Sch Elect & Elect Engn, Wuhan, Peoples R China

[2] Univ Hong Kong, Dept Elect & Elect Engn, Hong Kong, Peoples R China

[3] Nanyang Technol Univ, Energy Res Inst, Singapore, Singapore

[4] Southwest Jiaotong Univ, Sch Elect Engn, Chengdu, Peoples R China

[5] Nanyang Technol Univ, Sch Elect & Elect Engn, Singapore, Singapore

来源：

2024 IEEE APPLIED POWER ELECTRONICS CONFERENCE AND EXPOSITION, APEC | 2024年

关键词：

Noise-free Sampling; High Switching Frequency; DC-AC Converter; Modulation;

D O I：

10.1109/APEC48139.2024.10509502

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

In current-fed closed-loop single/three-phase DCAC converters, precise current sampling is required for better waveform quality and smaller steady-state error. However, interferences caused by switching noise pose challenges to acquiring precise averaging current value. This article presents some considerations regarding precise current sampling for high-frequency single- and three-phase DC-AC converters. Current spikes caused by spurious sampling points within narrow pulses' ranges are analyzed in detail. The dynamic sampling method in every switching cycle is proposed to avoid the high-frequency oscillation caused by switching transitions. The proposed method is validated in the platform of threephase/level SiC-based T-type converter.

引用

页码：2789 / 2793

页数：5

共 8 条

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