Optimal Design of High-speed Solid Rotor Cage Induction Motors Considering Ferromagnetic Materials Behavior and Manufacturing Process

High speed photography using the Cranz-Schardin camera was performed to study the crack divergence and divergence angle in thermally tempered glass. A tempered 3.5 mm thick glass plate was used as a specimen. It was shown that two types of bifurcation and branching existed as the crack divergence. The divergence angle was smaller than the value calculated from the principle of optimal design and showed an acute angle.

Download Full-text

Additional no-load losses in inverter-fed high-speed cage induction motors

Electrical Engineering ◽

10.1007/s00202-003-0185-3 ◽

2004 ◽

Vol 86 (2) ◽

pp. 105-116 ◽

Cited By ~ 4

Author(s):

G. Joksimovic ◽

A. Binder

Keyword(s):

High Speed ◽

Induction Motors

Download Full-text

Evaluation of Parts Produced by a Novel Additive Manufacturing Process

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.315.63 ◽

2013 ◽

Vol 315 ◽

pp. 63-67 ◽

Cited By ~ 1

Author(s):

Muhammad Fahad ◽

Neil Hopkinson

Keyword(s):

Additive Manufacturing ◽

Rapid Prototyping ◽

Manufacturing Process ◽

High Speed ◽

Three Dimensional ◽

Coordinate Measuring Machine ◽

Layer By Layer ◽

Nylon 12 ◽

Measuring Machine ◽

End Use

Rapid prototyping refers to building three dimensional parts in a tool-less, layer by layer manner using the CAD geometry of the part. Additive Manufacturing (AM) is the name given to the application of rapid prototyping technologies to produce functional, end use items. Since AM is relatively new area of manufacturing processes, various processes are being developed and analyzed for their performance (mainly speed and accuracy). This paper deals with the design of a new benchmark part to analyze the flatness of parts produced on High Speed Sintering (HSS) which is a novel Additive Manufacturing process and is currently being developed at Loughborough University. The designed benchmark part comprised of various features such as cubes, holes, cylinders, spheres and cones on a flat base and the build material used for these parts was nylon 12 powder. Flatness and curvature of the base of these parts were measured using a coordinate measuring machine (CMM) and the results are discussed in relation to the operating parameters of the process.The result show changes in the flatness of part with the depth of part in the bed which is attributed to the thermal gradient within the build envelope during build.

Download Full-text

Design principle of the high speed single-sided linear induction motors for propulsion of magnetically levitated trains

Electrical Engineering in Japan ◽

10.1002/eej.4391010414 ◽

1981 ◽

Vol 101 (4) ◽

pp. 96-105 ◽

Cited By ~ 2

Author(s):

Sakutaro Nonaka ◽

Tsuyoshi Higuchi

Keyword(s):

High Speed ◽

Design Principle ◽

Induction Motors ◽

Linear Induction ◽

Magnetically Levitated ◽

Linear Induction Motors

Download Full-text

Development of High-Speed Response Electromagnetic Linear Actuator Using for Pneumatic Control Valve

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.532.41 ◽

2014 ◽

Vol 532 ◽

pp. 41-45 ◽

Cited By ~ 1

Author(s):

Myung Jin Chung

Keyword(s):

Optimal Design ◽

Dynamic Characteristics ◽

High Speed ◽

Design Method ◽

Control Valve ◽

Design Parameters ◽

Linear Actuator ◽

Analytic Model ◽

Electromagnetic Linear Actuator ◽

Quadratic Programming Method

Analytic model of electromagnetic linear actuator in the function of electric and geometric parameters is proposed and the effects of the design parameters on the dynamic characteristics are analyzed. To improve the dynamic characteristics, optimal design is conducted by applying sequential quadratic programming method to the analytic model. This optimal design method aims to minimize the response time and maximize force efficiency. By this procedure, electromagnetic linear actuator having high-speed characteristics is developed.

Download Full-text

Starting Processes in Electric Drive of a Passenger Elevator

The Journal of CIEES ◽

10.48149/jciees.2021.1.1.7 ◽

2021 ◽

Vol 1 (1) ◽

pp. 40-49

Author(s):

S. Rachev ◽

K. Dimitrova ◽

D. Koeva ◽

L. Dimitrov

Keyword(s):

Coordinate System ◽

Induction Motor ◽

Electric Drive ◽

High Speed ◽

Induction Motors ◽

Dynamic Loads ◽

Design Stage ◽

Motor Drive ◽

Induction Motor Drive ◽

Electric Induction

During the operation of electric induction motors used to drive passenger elevators, electro-mechanical transient processes occur, which can cause unacceptable dynamic loads and vibrations. In this regard, research is needed both at the design stage and for operating elevator systems to determine the arising impact currents and torques, in order to propose solutions for their limitation within pre-set limits. Paper deals with starting processes in a two-speed induction motor drive of a passenger elevator. The equations for the voltages of the induction motor are presented in relative units in a coordinate system rotating at a synchronous speed. The values have been obtained for the torques, the rotational frequencies and the currents when starting at a high speed and passing from high to low speed.

Download Full-text