Showing items 1 - 2 of 2

A special magnetic coupler structure for three-coil wireless power transfer : analysis, design, and experimental verification

- Wang, Heshou, Cheng, Ka, Li, Xiaofei, Hu, Jiefeng

  • Authors: Wang, Heshou , Cheng, Ka , Li, Xiaofei , Hu, Jiefeng
  • Date: 2021
  • Type: Text , Journal article
  • Relation: IEEE Transactions on Magnetics Vol. 57, no. 11 (2021), p.
  • Full Text: false
  • Reviewed:
  • Description: In this article, a special magnetic coupler for three-coil wireless power transfer (WPT) is proposed to eliminate the mutual inductance between the source coil and the receiver coil, which can significantly improve the design freedom. Specifically, unipolar Q coil, mixed QDD coil, and bipolar DD coil are designed for the source coil, the transmitter coil ( $\text{T}_{\mathrm {X}}$ ), and the receiver coil ( $\text{R}_{\mathrm {X}}$ ), respectively. By making use of unipolar coils and bipolar coils, this structure magnetically decouples the receiver coil from the source coil. Meanwhile, under different lateral misalignment conditions, this new coupler facilitates maintaining high efficiency. A laboratory prototype has been constructed to validate the proposed structure, demonstrating that the proposed structure can realize inherent characteristics, enhance misalignment tolerance, and energy transfer. The potential applications are EV systems, but this design can be generalizable to other three-coil systems. © 1965-2012 IEEE.

Overview of power converter control in microgrids - challenges, advances, and future trends

- Hu, Jiefeng, Shan, Yinghao, Cheng, Ka, Islam, Syed

  • Authors: Hu, Jiefeng , Shan, Yinghao , Cheng, Ka , Islam, Syed
  • Date: 2022
  • Type: Text , Journal article
  • Relation: IEEE Transactions on Power Electronics Vol. 37, no. 8 (2022), p. 9907-9922
  • Full Text: false
  • Reviewed:
  • Description: As the electronic interfaces between distributed energy resources and the electrical network, power converters play a vital role in voltage stabilization and power conversion. So far, various power converter control methods have been developed. Now it is urgently needed to compare and understand these approaches to support the smart microgrid pyramid. This article provides an overview of the state-of-the-art of parallel power converter control in microgrid applications. The most important control schemes to address existing challenges, including concentrated control, master-slave control, droop mechanism, virtual synchronous generators, virtual oscillator control, distributed cooperative control, and model predictive control, are highlighted and analyzed in detail. In addition, the hierarchical control structure, as well as future trends, are reviewed and discussed. © 1986-2012 IEEE.
  • 1