Half-Cycle Control Method of the Bidirectional Three-Phase Dual-Buck Inverter Without Zero-Crossing Distortion

The dual-buck inverter (DBI) does not have a shoot-through problem, and thus, the harmonics caused by the dead-time can be avoided. Besides, the DBI of half-cycle control can reduce the inductor current. However, half-cycle control would cause zero-crossing distortion (ZCD). This article discusses t...

Full description

Saved in:
Bibliographic Details
Published in:IEEE journal of emerging and selected topics in power electronics 2021-04, Vol.9 (2), p.2088-2097
Main Authors: Zheng, Xinxin, Zhang, Le, Liu, Xintian, He, Yao, Shi, Jingkui, Wang, Chuyang
Format: Article
Language:English
Subjects:
Control methods
Distortion
Dual-buck inverter (DBI)
half-cycle control
Harmonics
High pass filters
Inverters
Negative feedback
Space vector pulse width modulation
Switches
three-phase system
Topology
zero-crossing distortion (ZCD)
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:The dual-buck inverter (DBI) does not have a shoot-through problem, and thus, the harmonics caused by the dead-time can be avoided. Besides, the DBI of half-cycle control can reduce the inductor current. However, half-cycle control would cause zero-crossing distortion (ZCD). This article discusses the working principle of DBI and the cause of ZCD. ZCD would lead to grid current distortion, which can be extracted by a high pass filter (HPF). Therefore, the negative feedback of grid current harmonic components can inhibit ZCD. In this article, the half-cycle control method without ZCD is proposed. The logic of half-cycle control is analyzed in detail. The ZCD formation process and the inhibition method is given by the quantitative switching model analysis. What is more, the influence on the control system of the method is discussed. Finally, a simulation model and a prototype of the three-phase DBI have been built to verify the theoretical analysis.
ISSN:2168-6777
2168-6785
DOI:10.1109/JESTPE.2020.2971550