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ZVS Boundary Analysis and Optimization Strategy of Phase-Shift Values for Three-Level Dual-Active-Bridge Converters Using Harmonic Decomposition
IEEE Transactions on Power Electronics
Year: 2025 | Early Access Article |
The dual-active-bridge (DAB) converter, comprising a primary-side three-level neutral-point-clamped (NPC) bridge and a secondary-side H-bridge, represents a promising topology for voltage conversion applications between medium-voltage DC (MVDC) and low-voltage DC (LVDC). To ensure efficient operation under high-frequency conditions, it is imperative to realize a wide zero-voltage-switching (ZVS) r...Show More
Research on Power Decoupling and Optimal Control of Modular Multiactive Bridge Converter With Relay Port
Changyu Gao;Kai Li;Zhibo Zhang;Fan Yuan;Sheng Zhang;Xiaojie You;Chenchen Wang
Modular multiactive bridge (MMAB) converter is a modular, scalable, and promising multiport converter that facilitates flexible interconnection among various power sources and loads. In the conventional MMAB configuration, all ports are coupled to a common high-frequency link through multiple high-frequency transformers, which inherently induces cross-coupling power flow between ports. This articl...Show More
Generalized Model of n-Port Modular Multiactive Bridge Converter With Multiple-Phase-Shift Modulation
Changyu Gao;Kai Li;Zhibo Zhang;Shicheng Zhang;Sheng Zhang;Xiaojie You;Sizhao Lu
The modular multiactive bridge (MMAB) converter is a promising multiport converter topology for integrating multiple energy sources, energy storage systems, and loads. However, a generalized model of the MMAB converter has not been derived. In this study, an $n$ -port MMAB converter model with multiple-phase-shift (MPS) modulation based on the generalized state-space averaging method is proposed....Show More
High Voltage Gain Soft-Switching Bidirectional DC-DC Converter With High Extendibility Using Coupled Inductor
This article proposes a generalized scheme of new soft-switching interleaved bidirectional dc-dc converters (BDCs) that is suitable for high voltage gain and high-power applications. The proposed converter is composed of proper numbers of basic cells to achieve high voltage gain and high-power transmission, which leads to high extendibility in topology. Meanwhile, the basic cell combines coupled i...Show More
An Automatic Neutral Section Power Supplier Serving as Railway Power Conditioner on Time-Division Basis
To address the issue of brief power outages when trains pass through the neutral section, various automatic neutral section power suppliers have been investigated. However, the schemes in existing literature have two main problems: the converter has numerous bridge legs and large capacity, and only operates briefly during trains passing through the neutral section, remaining in standby and idle st...Show More
Generalized State-Space Averaging Modeling of Dual-Active-Bridge Converter With Triple-Phase-Shift Control
Shicheng Zhang;Kai Li;Yan Liang;Changyu Gao;Xiaojie You;Chenchen Wang
2022 IEEE International Power Electronics and Application Conference and Exposition (PEAC)
Year: 2022 | Conference Paper |
Cited by: Papers (3)
This paper proposes a generalized model based on the generalized state-space averaging model for dual-active-bridge (DAB) DC-DC converters. The proposed model is suitable for all modulation modes, and the model is general, and the model will not be different due to the change of the transmission power mode. The model uses the AC first-order component of the inductor current and the DC component of...Show More
Design and Implementation of Four-Port Megawatt-Level High-Frequency-Bus Based Power Electronic Transformer
Kai Li;Wusong Wen;Zhengming Zhao;Liqiang Yuan;Weiqian Cai;Xin Mo;Changyu Gao
With high penetration of various distributed energy resources and dc loads in modern power system, ac/dc hybrid distributed grid attracts a lot of attention due to its compatibility. Aiming for interface of the ac/dc hybrid distributed grid, a four-port megawatt-level power electronic transformer (PET) is focused on in this article. A novel high-frequency-bus based multiport PET topology is propos...Show More
Back-to-Back H-Bridge Cell Based Modular Solid State Transformer with High-Frequency Link
Changyu Gao;Kai Li;Yongsheng Qi;Xiaojie You;Xianjin Huang;Zhengming Zhao;Wusong Wen
2020 IEEE 9th International Power Electronics and Motion Control Conference (IPEMC2020-ECCE Asia)
Year: 2020 | Conference Paper |
Cited by: Papers (1)
With the features of control flexibility, multiple functions and compact size, solid state transformer (SST) is considered to be a promising candidate for the energy conversion in applications such as charge station, data center, distribution grid, traction systems and so on. Generally, SST is used to transform medium-voltage AC to low-voltage AC, through the intermediate DC link. Two modular SST ...Show More
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