Research on Three-Shaft Ring-Plate Permanent Magnetic Gear Variable Speed Transmission Device

In this study, we propose a non-contact 80 kW, 60,000 rpm coaxial magnetic gear (CMG) model for high speed and high power applications. Two models with the same power but different radial and axial sizes were optimized using response surface methodology. Both models employed a Halbach array to increase torque. Also, an edge fillet was applied to the radial magnetized permanent magnet to reduce torque ripple, and an axial gap was applied to the permanent magnet with a radial gap to reduce eddy current loss. The models were analyzed using 2-D and 3-D finite element analysis. The torque, torque ripple and eddy current loss were compared in both models according to the materials used, including Sm2Co17, NdFeBs (N42SH, N48SH). Also, the structural stability of the pole piece structure was investigated by forced vibration analysis. Critical speed results from rotordynamics analysis are also presented.

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168. Dynamic Aerosol Sizing with a Variable Speed Rotary Impactor

10.3320/1.2757839 ◽

2003 ◽

Author(s):

P. Lilienfeld ◽

D. Kita ◽

K. Willeke

Keyword(s):

Variable Speed

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DESIGN, SIMULATION AND IMPLEMENTATION MONITORING SYSTEM FOR SYSTEM CONTROL C4 FEEDING PUMP FOR FEED VAPORIZATION IN THE BUTADIENE PLANT

Proceedings of The Conference on Management and Engineering in Industry ◽

10.33555/cmei.v1i1.3 ◽

2020 ◽

Vol 1 (1) ◽

pp. 31-35

Author(s):

Fahmi Yunistyawan ◽

Yunistyawan J Berchmans ◽

Gembong Baskoro

Keyword(s):

Motor Control ◽

Control System ◽

Field Operator ◽

System Control ◽

Variable Speed ◽

Variable Speed Drive ◽

Software And Hardware ◽

Discharge Pressure ◽

Selection Of

This study implements the auto start control system on an electric motor 3 phase C4Feeding pump when the discharge pressure is low-low (4.3 kg /cm²). The C4 feeding pumpmotor was initially manually operated from the local control station, this was very ineffectiveand inefficient because it still relied on the field operator to operate the pump motor and whenthe plant was in normal operating it is very risk if the field operator late to operate motor then itwill impact to quality of the product, and if the delay time to operate motor is too long then planthave to shut down, therefore improvement is needed in the C4 feeding pump motor controlsystem. In this paper, various types of 3-phase motor control are explained which allow it to beapplied to the C4 feeding pump motor that are on-off, inverter, and variable speed drive andefficient selection of the three systems control of the motor. Software and hardware used in thisthesis work are DCS CENTUM VP Yokogawa.

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