The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 06, 2021
Filed:
Sep. 10, 2019
Korea Advanced Institute of Science and Technology, Daejeon, KR;
University-industry Cooperation Group of Kyung Hee University, Yongin-si, KR;
Seungyoung Ahn, Daejeon, KR;
Jaehyoung Park, Daejeon, KR;
Bomson Lee, Yongin-si, KR;
Hongkyun Kim, Daejeon, KR;
Korea Advanced Institute of Science and Technology, Daejeon, KR;
University-Industry Cooperation Group of Kyung Hee University, Yongin-si, KR;
Abstract
A leakage magnetic field shielding device includes: a leakage magnetic field determining unit for determining phase and magnitude of a leakage magnetic field based on information obtained from a power supply device and a current collector device; a shielding current controller for determining a shielding current based on the phase and magnitude of the leakage magnetic field and supplying the determined shielding current to the leakage magnetic field shielding device; and a shielding unit for shielding the leakage magnetic field by generating a shielding magnetic field in accordance with the supply of the shielding current. The shielding unit has a multiple resonance characteristic depending on an arrangement of capacitors and coils and is disposed to surround the power supply device or the current collector device. The shielding magnetic field has resonance frequencies canceling magnetic fields corresponding to fundamental frequency and multiple frequency of the leakage magnetic field.