Prototype and characteristics measurement of bearingless motor with wide air gap structure

2010 ◽  
Author(s):  
Kazunobu Oi ◽  
Daiki Matsuhashi ◽  
Masakatsu Nomura ◽  
Masatsugu Takemoto ◽  
Tadashi Fukao
Keyword(s):  
Air Gap ◽  
Bearingless Motor ◽  
Gap Structure

Composite Diaphragm Ultrasonic Transducers Employing Air-Gap Structure

1993 ◽  
Vol 32 (Part 1, No. 5B) ◽  
pp. 2321-2324 ◽  
Author(s):  
Jun-ichi Shiokawa ◽  
Yoshiki Makishima ◽  
Ken-ya Hashimoto ◽  
Masatsune Yamaguchi
Keyword(s):  
Air Gap ◽  
Ultrasonic Transducers ◽  
Gap Structure

Enhancement of optical extraction efficiency in white LED package with quantum dot phosphors and air-gap structure

2014 ◽  
Vol 7 (5) ◽  
pp. 052101 ◽  
Author(s):  
Min-Ho Shin ◽  
Hyun-Guk Hong ◽  
Hyo-Jun Kim ◽  
Young-Joo Kim
Keyword(s):  
Quantum Dot ◽  
Extraction Efficiency ◽  
Air Gap ◽  
White Led ◽  
Optical Extraction ◽  
Gap Structure

Non-uniform air gap modeling and electromagnetic characteristics of a new six-phase doubly salient electro-magnetic generator

2020 ◽  
Vol 64 (1-4) ◽  
pp. 1325-1335
Author(s):  
Xiaoyu Zhou ◽  
Liwei Shi ◽  
Junhao An ◽  
Fukang Ding
Keyword(s):  
Finite Element ◽  
Linear Structure ◽  
Mutual Inductance ◽  
Air Gap ◽  
Electromagnetic Properties ◽  
Element Analysis ◽  
Doubly Salient ◽  
Electro Magnetic ◽  
Magnetic Generator ◽  
Gap Structure

The voltage harmonics of the six-phase doubly salient electro-magnetic generator (DSEG) are large, and the electromagnetic isolation is poor due to the mutual inductance of the armature winding. An optimization scheme for the stator non-uniform air gap structure is proposed. By establishing a non-uniform air gap angle function model, the analytical expression of the induced electromotive force in the non-uniform air gap structure is derived. Using finite element and mathematical model to verify that the stator tip is changed from circular arc to linear structure can increase power and reduce voltage high harmonics, improve the power quality of the generator. Based on the equivalent magnetic circuit, the influence of the winding method of the excitation winding on the mutual inductance of the armature winding is studied. When the field winding is wound interval every two stator poles, the mutual inductance is small. The electromagnetic properties of the new six-phase electric excitation double salient pole are analyzed by two-dimensional finite element analysis. The rationality of the proposed motor structure is verified by experiments.

scholarly journals A Wide Air Gap Flux Switching Bearingless Motor With Odd and Even Pole Pair Numbers

2020 ◽  
Vol 1 ◽  
pp. 52-62
Author(s):  
Thomas Holenstein ◽  
Marcel Schuck ◽  
Johann W. Kolar
Keyword(s):  
Air Gap ◽  
Bearingless Motor

Heating Characteristic and Thermal Optimization of Superconducting DC Induction Heater With Adjustable Air Gap Structure

2020 ◽  
Vol 30 (4) ◽  
pp. 1-7
Author(s):  
Ping Yang ◽  
Longbiao Wang ◽  
F. Li ◽  
Yunhai Tan ◽  
W. Wu ◽  
...  
Keyword(s):  
Air Gap ◽  
Thermal Optimization ◽  
Induction Heater ◽  
Gap Structure
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