An optimal design method for efficiency of permanent magnet motors

2002 ◽  
Vol 138 (3) ◽  
pp. 72-79
Author(s):  
Yoshihiro Hosokawa ◽  
So Noguchi ◽  
Hideo Yamashita ◽  
Shigeya Tanimoto
Keyword(s):  
Optimal Design ◽  
Permanent Magnet ◽  
Design Method ◽  
Permanent Magnet Motors ◽  
Optimal Design Method

scholarly journals An Optimal Design Method for Efficiency of Permanent Magnet Motors

2001 ◽  
Vol 121 (2) ◽  
pp. 171-177 ◽  
Author(s):  
Yoshihiro Hosokawa ◽  
So Noguchi ◽  
Hideo Yamashita ◽  
Shigeya Tanimoto
Keyword(s):  
Optimal Design ◽  
Permanent Magnet ◽  
Design Method ◽  
Permanent Magnet Motors ◽  
Optimal Design Method

Optimal design method with thermomagnetic field coupling analysis for miniaturization of permanent magnet synchronous motor

2013 ◽  
Vol 183 (2) ◽  
pp. 29-38
Author(s):  
Hideki Kitamura ◽  
Norihisa Iwasaki ◽  
Masashi Kitamura ◽  
Hideaki Mori ◽  
Masahide Yamasaki ◽  
...  
Keyword(s):  
Optimal Design ◽  
Permanent Magnet ◽  
Design Method ◽  
Permanent Magnet Synchronous Motor ◽  
Synchronous Motor ◽  
Coupling Analysis ◽  
Field Coupling ◽  
Optimal Design Method

scholarly journals Research on Internal and External Split Ratio of Double-Sided Rotor Permanent Magnet Motor Based on Copper Consumption Density and Current Density

2021 ◽  
Vol 2021 ◽  
pp. 1-15
Author(s):  
Kai Liu ◽  
Bingyi Zhang ◽  
Guihong Feng
Keyword(s):  
Optimal Design ◽  
Permanent Magnet ◽  
Current Density ◽  
Heat Dissipation ◽  
Design Method ◽  
Electromagnetic Torque ◽  
Analysis Model ◽  
Split Ratio ◽  
Optimal Design Method ◽  
Short Time

In the traditional split ratio optimization of double-sided rotor permanent magnet motors (DSRPMM), the typical thermal constraint condition is that the total copper consumption of the motor is fixed. This method can only constrain the overall temperature rise of the motor to a certain extent, but it is limited to restrain the local short-time heating of the winding. On the basis of the heat dissipation mode and external size of the motor, an optimal design method of the split ratio based on copper consumption density and current density is presented in this paper. The method restricts the whole heating of the motor and the local short-time heating of the winding by limiting the copper consumption density and current density. The thermal is used as the electromagnetic torque boundary. By analyzing the relationship between the electromagnetic torque and the split ratio, the expression of the optimal split ratio based on the maximum electromagnetic torque is derived. The analysis model is established by using the finite element tool, and the accuracy of the expression is proved. Based on the analysis results, a DSRPMM prototype is made and the experimental test is carried out. The experimental results of the prototype demonstrate the accuracy of the optimal design method of the split ratio based on copper consumption density and current density. The research of this paper provides a theoretical basis for improving the accuracy and reliability of the DSRPMM design.

scholarly journals Development of Optimal Design Method for Steel Double-Beam Floor System Considering Rotational Constraints

2021 ◽  
Vol 11 (7) ◽  
pp. 3266
Author(s):  
Insub Choi ◽  
Dongwon Kim ◽  
Junhee Kim
Keyword(s):  
Optimal Design ◽  
Design Process ◽  
Design Method ◽  
Steel Beams ◽  
High Gravity ◽  
Double Beam ◽  
Iterative Analysis ◽  
Floor Systems ◽  
Optimal Design Method ◽  
Floor System

Under high gravity loads, steel double-beam floor systems need to be reinforced by beam-end concrete panels to reduce the material quantity since rotational constraints from the concrete panel can decrease the moment demand by inducing a negative moment at the ends of the beams. However, the optimal design process for the material quantity of steel beams requires a time-consuming iterative analysis for the entire floor system while especially keeping in consideration the rotational constraints in composite connections between the concrete panel and steel beams. This study aimed to develop an optimal design method with the LM (Length-Moment) index for the steel double-beam floor system to minimize material quantity without the iterative design process. The LM index is an indicator that can select a minimum cross-section of the steel beams in consideration of the flexural strength by lateral-torsional buckling. To verify the proposed design method, the material quantities between the proposed and code-based design methods were compared at various gravity loads. The proposed design method successfully optimized the material quantity of the steel double-beam floor systems without the iterative analysis by simply choosing the LM index of the steel beams that can minimize objective function while satisfying the safety-related constraint conditions. In particular, under the high gravity loads, the proposed design method was superb at providing a quantity-optimized design option. Thus, the proposed optimal design method can be an alternative for designing the steel double-beam floor system.

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