Fundamental Design of a Consequent-Pole Transverse-Flux Motor for Direct-Drive Systems

2013 ◽  
Vol 49 (7) ◽  
pp. 4096-4099 ◽  
Author(s):  
Yasuhito Ueda ◽  
Hiroshi Takahashi ◽  
Toshikatsu Akiba ◽  
Mitsunobu Yoshida
Keyword(s):  
Direct Drive ◽  
Transverse Flux ◽  
Drive Systems ◽  
Consequent Pole ◽  
Fundamental Design

scholarly journals A Review of Transverse Flux Machines Topologies and Design

Energies ◽  
2021 ◽  
Vol 14 (21) ◽  
pp. 7173
Author(s):  
Víctor Ballestín-Bernad ◽  
Jesús Sergio Artal-Sevil ◽  
José Antonio Domínguez-Navarro
Keyword(s):  
Power Systems ◽  
Prime Mover ◽  
Variable Speed ◽  
Direct Drive ◽  
Comprehensive Review ◽  
Potential Applications ◽  
High Torque ◽  
Transverse Flux ◽  
Drive Systems ◽  
Load Variable

High torque and power density are unique merits of transverse flux machines (TFMs). TFMs are particularly suitable for use in direct-drive systems, that is, those power systems with no gearbox between the electric machine and the prime mover or load. Variable speed wind turbines and in-wheel traction seem to be great-potential applications for TFMs. Nevertheless, the cogging torque, efficiency, power factor and manufacturing of TFMs should still be improved. In this paper, a comprehensive review of TFMs topologies and design is made, dealing with TFM applications, topologies, operation, design and modeling.

Analytical Modeling and Experimental Validation of Force Ripple and Friction Force for General Direct Drive Systems

2013 ◽  
Author(s):  
Ran Zhao ◽  
Chengying Xu
Keyword(s):  
Analytical Modeling ◽  
Tracking Error ◽  
Least Square Method ◽  
Optimization Methods ◽  
Analytical Form ◽  
Least Square ◽  
Direct Drive ◽  
Drive Systems ◽  
Force Ripple ◽  
Engineering Practices

In this paper, we present a systematic modeling method of direct drive systems. Experiments are designed to decouple and model friction and force ripple separately, which are two major sources of tracking error. Three different optimization methods, least square method, nonlinear least square method and particle swarm optimization are used for parameter optimization. The analytical form of the model makes it easy to use in engineering practices. All results are obtained and verified experimentally. The method presented in this paper can also be used to model other mechanical systems.

scholarly journals Control of a Direct-Drive Arm

1983 ◽  
Vol 105 (3) ◽  
pp. 136-142 ◽  
Author(s):  
H. Asada ◽  
T. Kanade ◽  
I. Takeyama
Keyword(s):  
Drive System ◽  
Direct Drive ◽  
Excellent Performance ◽  
Mechanical Stiffness ◽  
Feedback Controllers ◽  
Transmission Mechanisms ◽  
Single Link ◽  
High Torque ◽  
Drive Systems ◽  
Speed And Accuracy

A direct-drive arm is a mechanical arm in which the shafts of articulated joints are directly coupled to the rotors of motors with high torque. Since the arm does not contain transmission mechanisms between the motors and their loads, the drive system has no backlash, small friction, and high mechanical stiffness, all of which are desirable for fast, accurate, and versatile robots. First, the prototype robot is described, and basic feedback controllers for single-link drive systems are designed. Second, feedforward compensation is discussed. This compensation significantly reduces the effect of interactions among multiple joints and nonlinear forces. The experiments showed the excellent performance of the direct-drive arm in terms of speed and accuracy.

Precision-limit positioning of direct drive systems with the existence of friction

2003 ◽  
Vol 11 (3) ◽  
pp. 233-244 ◽  
Author(s):  
Ting-Yung Lin ◽  
Yih-Chieh Pan ◽  
Chen Hsieh
Keyword(s):  
Direct Drive ◽  
Precision Limit ◽  
Drive Systems

scholarly journals Modeling and Static Analysis of Primary Consequent-Pole Tubular Transverse-Flux Flux-Reversal Linear Machine

Energies ◽  
2017 ◽  
Vol 10 (10) ◽  
pp. 1479 ◽  
Author(s):  
Dingfeng Dong ◽  
Wenxin Huang ◽  
Feifei Bu ◽  
Qi Wang ◽  
Wen Jiang ◽  
...  
Keyword(s):  
Static Analysis ◽  
Flux Reversal ◽  
Transverse Flux ◽  
Consequent Pole ◽  
Linear Machine
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