Wireless Bioelectronic Interfaces Electromagnetic Performance and Safety

2022 ◽  
pp. 1-26
Author(s):  
Han-Joon Kim ◽  
Zhenya Dong ◽  
John S. Ho
Keyword(s):  
Electromagnetic Performance

ANCORSTEEL PHOSPHORUS ALLOYS

Alloy Digest ◽  
2016 ◽  
Vol 65 (2) ◽  
Keyword(s):  
Coercive Force ◽  
Physical Properties ◽  
Tensile Properties ◽  
Powder Metal ◽  
Iron Powders ◽  
Electromagnetic Performance

Abstract Ancorsteel phosphorus alloys are ferrous base powders for PM parts requiring superior electromagnetic performance. Compared with parts made from pure, high compressibility iron powders, those made from the phosphorus alloys have higher resistivity, permeability and induction, and reduced coercive force. The presence of phosphorus also decreases the susceptibility of a PM component to nitrogen aging. These alloys are produced by making ferrophosphorus additions to the highly compressible iron powders Ancorsteel 1000B or Ancorsteel 1000C. This datasheet provides information on physical properties, and tensile properties. It also includes information on powder metal forms. Filing Code: CS-196. Producer or source: Hoeganaes Corporation.

scholarly journals Detailed analytical modeling for electromagnetic performance in actively shielded superconducting machines

AIP Advances ◽  
2021 ◽  
Vol 11 (2) ◽  
pp. 025306
Author(s):  
Kyung-Hun Shin ◽  
Tae-Kyoung Bang ◽  
Jang-Young Choi ◽  
Han-Wook Cho ◽  
Kiruba S. Haran
Keyword(s):  
Analytical Modeling ◽  
Electromagnetic Performance

scholarly journals High-Harmonic Injection-Based Brushless Wound Field Synchronous Machine Topology

Mathematics ◽  
2021 ◽  
Vol 9 (15) ◽  
pp. 1721
Author(s):  
Syed Sabir Hussain Bukhari ◽  
Fareed Hussain Mangi ◽  
Irfan Sami ◽  
Qasim Ali ◽  
Jong-Suk Ro
Keyword(s):  
High Harmonic ◽  
Current Injection ◽  
Harmonic Current ◽  
Element Analysis ◽  
Magnetomotive Force ◽  
Excitation Scheme ◽  
Three Phase ◽  
Harmonic Injection ◽  
Field Excitation ◽  
Electromagnetic Performance

This paper discusses the design and analysis of a high-harmonic injection-based field excitation scheme for the brushless operation of wound field synchronous machines (WFSMs) in order to achieve a higher efficiency. The proposed scheme involves two inverters. One of these inverters provides the three-phase fundamental-harmonic current to the armature winding, whereas the second inverter injects the single-phase high-harmonic i.e., 6th harmonic current in this case, to the neutral-point of the Y-connected armature winding. The injection of the high-harmonic current in the armature winding develops the high-harmonic magnetomotive force (MMF) in the air gap of the machine beside the fundamental. The high-harmonic MMF induces the harmonic current in the excitation winding of the rotor, whereas the fundamental MMF develops the main armature field. The harmonic current is rectified to inject the direct current (DC) into the main rotor field winding. The main armature and rotor fields, when interacting with each other, produce torque. Finite element analysis (FEA) is carried out in order to develop a 4-pole 24-slot machine and investigate it using a 6th harmonic current injection for the rotor field excitation to both attain a brushless operation and analyze its electromagnetic performance. Later on, the performance of the proposed topology is compared with the typical brushless WFSM topology employing the 3rd harmonic current injection-based field excitation scheme.

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