Jun Wang

In this article, two continuous control set model predictive control (CCS-MPC) methods with one-step prediction horizon for three-level flying capacitor boost converter (FCBC) that can provide constant switching frequency are presented. The first one is explicit model predictive control (EMPC), which can provide explicit solution. In order to further reduce the complexity and the computational burden of EMPC while meeting the control requirements, a simple model predictive control (SMPC) is proposed as the second CCS-MPC method. The proposed CCS-MPC will be used as the inner-loop controller to control the inductor current and flying capacitor (FC) voltage. Besides, a suitable outer-loop control strategy for the output voltage is proposed to provide a suitable inductor current reference to improve the dynamic response of the output voltage while avoiding overcurrent. Compared with the previous control method for three-level FCBC, the proposed control method has good dynamic performance and stronger ability to resist input voltage disturbance. The effectiveness of the proposed method is verified by simulation and experimental results.

Model Predictive Control

Overcurrent

10.1109/jestpe.2020.3044963

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Citations (28)

CCDC 2269123: Experimental Crystal Structure Determination

The Cambridge Structural Database (2023)

Josh Moon Zhifang Guo Owen A. Beaumont Sophie Hamilton Guillaume Bousrez

An entry from the Cambridge Structural Database, the world’s repository for small molecule crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely available from the CCDC and typically includes 3D coordinates, cell parameters, space group, experimental conditions and quality measures.

10.5517/ccdc.csd.cc2g56jd

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CCDC 1829669: Experimental Crystal Structure Determination

The Cambridge Structural Database (2018)

Jungang Deng Ping Yu Zhenlei Zhang Jun Wang Jinhua Cai

An entry from the Cambridge Structural Database, the world’s repository for small molecule crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely available from the CCDC and typically includes 3D coordinates, cell parameters, space group, experimental conditions and quality measures.

10.5517/ccdc.csd.cc1zdxlw

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Si/WBG Hybrid Half-Bridge Converter Using Coupled Inductors for Power Quality Improvement and Control Simplification

IEEE Transactions on Power Electronics (2023)

Chao Zhang Xufeng Yuan Jun Wang Bo Hu Zeng Liu

The Si/WBG hybrid half-bridge (HHB) converter with hybrid frequency interleaved operation (HFIO) aims to offer an improved cost-performance tradeoff but suffers from un-compensable and low-frequency fluctuations in power quality issues and complicated control design. In this paper, a Si/WBG coupled half-bridge (CHB) is proposed, which coordinates the hybrid-frequency interleaved Si and WBG phase operation by a coupled inductor. By optimal configuring the coupling coefficient, the un-compensable, and low-frequency fluctuations of power quality issues can be completely addressed. Meanwhile, the HFIO controller is redesigned from the perspective of the modulated model predictive control (MMPC), and the implementation can be greatly simplified under the selected optimal coefficient. A 3.3kW Si IGBT/SiC MOSFET CHB totem-pole bridgeless PFC (TPBPFC) prototype is built as a case study to validate the proposed design concept. In comparison to conventional Si/SiC HHB TPBPFC, the proposed Si/SiC CHB TPBPFC can achieve a maximum 64.7% THD reduction, demonstrating the same low ripple and THD performance as full high-frequency two-phase all-SiC design in all operating ranges while with 16.7% cost reduction.

Insulated-gate bipolar transistor

H bridge

10.1109/tpel.2023.3342133

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An Analytical Subthreshold I–V Model of Sic Double Gate Jfets

Yi Li Tao Zhou Geng Jiang Liangbin Deng Zixuan Guo

Download This Paper Open PDF in Browser Add Paper to My Library Share: Permalink Using these links will ensure access to this page indefinitely Copy URL Copy DOI

Subthreshold conduction

Double gate

Subthreshold slope

10.2139/ssrn.4778706

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A Series-Type Hybrid Circuit Breaker based on Flying Capacitor Multilevel Injector with Balanced Switching Operation and Current Limiting Capability

IEEE Journal of Emerging and Selected Topics in Power Electronics (2024)

F.L. Luo Chao Zhang Xufeng Yuan Wei Xiong Huajun Zheng

Limiting

Current limiting

10.1109/jestpe.2024.3394516

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Characterization of SiC/SiO<sub>2</sub> Interface State under Different NO Annealing

Materials science forum (2023)

Kang Hua Yu Yu Wei Wang Jun Wang

Interface properties of 4H-SiC N-MOS and P-MOS capacitors with two different NO annealing conditions are characterized by the conductance method. With the enhancement of nitrogen passivation, the density of interface states is reduced as expected. Fast interface states (response frequencies >1 MHz) are observed for both N-MOS and P-MOS capacitors with weak NO passivation. After strong NO passivation, the fast states are passivated to the interface states with lower response frequency in N-MOS and significantly suppressed in P-MOS. It indicates that the nitridation may passivate the defects by shifting them from shallow level to deep level.

Passivation

10.4028/p-py2s0w

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Wireless network authentication protocol in marine internet of things

Ship Science and Technology (2020)

Jun Wang

针对船用物联网中的无线网络认证受到网络攻击的影响,以提高船用物联网中的无线网络认证效率为目的,提出船用物联网中的无线网络认证协议.在引入通信技术的基础上,利用无线网络发送端与接收端的通信原理,建立无线网络认证模型;将客户端与船用物联网平台看成一个整体,利用身份认证步骤设计了认证流程,完成了用户和船用物联网平台的身份认证;结合无线网络认证协议的实现流程,遏制网络攻击行为,实现船用物联网中无线网络的认证.结果证明,与其他2种认证协议相比,提出的无线网络认证协议具有较高的认证效率,保证了船舶物联网中无线网络的安全,适合推广使用.

Source

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CCDC 1470889: Experimental Crystal Structure Determination

The Cambridge Structural Database (2016)

Lizi Yang Jun Wang Alexander M. Kirillov Wei Dou Cong Xu

An entry from the Cambridge Structural Database, the world’s repository for small molecule crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely available from the CCDC and typically includes 3D coordinates, cell parameters, space group, experimental conditions and quality measures.

10.5517/ccdc.csd.cc1lcl1l

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CCDC 1991808: Experimental Crystal Structure Determination

The Cambridge Structural Database (2021)

Yun‐Shan Xue Chen Zhang Jun Qing Lv Ningning Chen Jun Wang

10.5517/ccdc.csd.cc24vmwj

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