Fundamental Study on Eddy Current Brake of Using A Three Phase AC Excitation Method

2019 ◽  
Author(s):  
Norihiro Sato ◽  
Yoshimi Kikuchi ◽  
Taichiro Sumi ◽  
Hiroyuki Wakiwaka ◽  
Makoto Sonehara ◽  
...  
Keyword(s):  
Eddy Current ◽  
Fundamental Study ◽  
Three Phase ◽  
Ac Excitation ◽  
Excitation Method

scholarly journals Brake Torque of Three-phase AC Excited Eddy Current Brakes Using Cu/SPCC Composite Material Disc

2021 ◽  
Vol 29 (2) ◽  
pp. 389-394
Author(s):  
Kentaro HORI ◽  
Daichi MOCHIZUKI ◽  
Yoshimi KIKUCHI ◽  
Hiroyuki WAKIWAKA ◽  
Makoto SONEHARA ◽  
...  
Keyword(s):  
Composite Material ◽  
Eddy Current ◽  
Brake Torque ◽  
Three Phase ◽  
Ac Excited

Novel Array Eddy Current Sensor With Three-Phase Excitation

2019 ◽  
Vol 19 (18) ◽  
pp. 7896-7905 ◽  
Author(s):  
Na Zhang ◽  
Chaofeng Ye ◽  
Lei Peng ◽  
Yu Tao
Keyword(s):  
Eddy Current ◽  
Current Sensor ◽  
Eddy Current Sensor ◽  
Three Phase

Fundamental Study of Eddy Current Brakes by Using Magnetic Clad Material

2020 ◽  
Author(s):  
Kentaro Hori ◽  
Daichi Mochizuki ◽  
Yoshimi Kikuchi ◽  
Hiroyuki Wakiwaka ◽  
Makoto Sonehara ◽  
...  
Keyword(s):  
Eddy Current ◽  
Fundamental Study

Self-Powered Eddy Current Damper for Rotordynamic Applications

2015 ◽  
Vol 137 (1) ◽  
Author(s):  
Mario Silvagni ◽  
Andrea Tonoli ◽  
Angelo Bonfitto
Keyword(s):  
Eddy Current ◽  
Rotating Shaft ◽  
Electric Generator ◽  
Three Phase ◽  
Rolling Element ◽  
Transformer Type ◽  
Eddy Current Damper ◽  
Self Powered ◽  
Fluid Dampers ◽  
Absence Of Power

The vibration control of rotors is often performed using elastomeric or fluid dampers together with rolling element or hydrodynamic type bearings. Electromagnetic dampers seem a valid alternative to conventional solutions and also to active magnetic bearings (AMBs) because their simpler architecture, size and, if of transformer type, also for the absence of power electronics, position sensors, and any fast feedback loop. However, transformer eddy current dampers require a constant voltage power supply than can be provided by an embedded generator to reduce cost and improve the reliability. The present paper proposes a self-powered damper to fulfill these requirements. A three-phase permanent magnet electric generator (connected to the rotating shaft) generates the required power for the damping device. The generator is connected to the damping circuit by means of tuned impedance and a three-phase rectifier.

Eddy currents in thin circular cylinders of uniform conductivity, due to periodically changing magnetic fields, in two dimensions

1927 ◽  
Vol 23 (8) ◽  
pp. 901-906 ◽  
Author(s):  
F. W. Carter
Keyword(s):  
Eddy Current ◽  
Eddy Currents ◽  
Two Dimensions ◽  
Circular Cylinders ◽  
Two Dimensional ◽  
Total Field ◽  
Current Field ◽  
Conducting Material ◽  
Eddy Current Losses ◽  
Three Phase

The paper deals with the eddy currents in thin circular cylinders of uniform conducting material, due to periodic currents in conductors lying parallel to the axis of the cylinder, or to the rotation of the cylinder in a two-dimensional field of force. The first of these problems was discussed by Mr M. B. Field in a paper entitled “Eddy current losses in three-phase cable sheaths,” read before the British Association at their Cambridge meeting in 1904. The solution proposed, however, although probably sufficient for the object, is mathematically defective, in that the field due to the current carried by the cable is assumed as the total field, the effect of the eddy-current field on the eddy currents themselves being left out of account.

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