Jiahua Lyu

ORCID: 0000-0002-2467-8348
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About
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Research Areas
  • Wireless Power Transfer Systems
  • Energy Harvesting in Wireless Networks
  • Silicon Carbide Semiconductor Technologies
  • Thermal Analysis in Power Transmission
  • Electromagnetic Compatibility and Noise Suppression
  • Innovative Energy Harvesting Technologies
  • High voltage insulation and dielectric phenomena
  • 3D IC and TSV technologies
  • Lightning and Electromagnetic Phenomena
  • Electromagnetic Simulation and Numerical Methods
  • Wireless Body Area Networks
  • Advanced DC-DC Converters
  • Induction Heating and Inverter Technology
  • Microwave Engineering and Waveguides
  • VLSI and FPGA Design Techniques

Hong Kong Polytechnic University
2020-2025

Southern University of Science and Technology
2020-2024

In addition to insulator flashover, lightning damage of surge arresters (SAs) is also considered in evaluating the performance a distribution network. This article presents novel multi-objective optimization framework for designing differentiated SA protection, by minimizing both flashover number and rate. An artificial neural network an energy-distribution surrogate model are developed efficient evaluation these two targets process. The samples building models generated with hybrid...

10.1109/tpwrd.2023.3240378 article EN IEEE Transactions on Power Delivery 2023-02-02

Litz wire (LW) is a common tool used in high-frequency power electronic applications to reduce eddy loss. Uninsulated twisted (UTW) with lower manufacturing costs often ignored by both researchers and designers. LW UTW have similar geometry structures, however, there has been little research on the performance evaluation of so far. This article proposes novel calculation method based multilevel partial element equivalent circuit results are verified experimental measurement. Then, compared...

10.1109/tpel.2021.3103867 article EN IEEE Transactions on Power Electronics 2021-08-10

Litz wire has been an essential component for the power electronic design to reduce eddy loss. However, there is a lack of efficient numerical algorithms simulate wires due their complex structures. This letter proposes multilevel partial element equivalent circuit method that significantly improves efficiency simulation wire. boosts at both packing level and twisting level. In level, novel meshing proposed capture skin proximity effect accurately efficiently. calculation further divided...

10.1109/tpel.2020.2991483 article EN IEEE Transactions on Power Electronics 2020-04-30

Litz wire coil (LWC) is an electronic component commonly used in wireless power transfer (WPT) and heating applications. However, due to its complex twisting structure with turns, existing calculation methods such as analytical finite element method (FEM) cannot extract the impedance of LWC efficiently. This article proposes efficient numerical algorithm named LitzImp for fast extraction LWC. provides different simplification schemes structures, reducing resource consumption repeated same...

10.1109/tie.2022.3215458 article EN IEEE Transactions on Industrial Electronics 2022-11-03

10.1109/tcpmt.2024.3423003 article EN IEEE Transactions on Components Packaging and Manufacturing Technology 2024-01-01

A box-shape coil structure is proposed for the wireless power transfer (WPT) system. The assist coils parallel with transmission direction are added around primary coil. could achieve a more uniform magnetic field distribution, which enhances ability of anti-misalignment. also beneficial to realization multi-receiver WPT. Calculations by Biot-Savart Law adopted evaluation and further design. results prove that uniformity improves than 20 times compared an existing designed structure. result...

10.1109/icpst56889.2023.10164939 article EN 2023-05-05
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