Manufacturing Imperfections in Electric Motor Production with Focus on Halbach Array Permanent Magnet Rotor Assembly

Meyer, Alexander; Lindenfels, Johannes von; Mayr, Andreas; Franke, Jörg

doi:10.1109/edpc.2018.8658282

Cited by 11 publications

(4 citation statements)

References 21 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…However, the torque per PM usage is reduced with the Halbach array. And it brings other problems like manufacturing difficulty and relatively lower mechanical reliability [119][120].…”

Section: Discussion and Summary 1) Pm-excited Machinesmentioning

confidence: 99%

Overview of Stator Slot-Opening Permanent Magnet Machines

Niu

Wang

Zhao

2023

IEEE Trans. Transp. Electrific.

View full text Add to dashboard Cite

In the past few decades, the stator permanent magnet (PM) machines have attracted much research attention because of their reliable rotor structure, high power density, wide speed range, and strong fault-tolerant ability. Among the recently proposed stator PM machine topologies, the stator slot-opening PM (SS-PM) machines are becoming increasingly popular because of their higher stator space utilization and robust rotor structure. According to the SS-PM magnetization direction, the SS-PM machines can be classified into three categories, namely, the tangentially magnetized stator slot-opening PM (TMSS-PM) machines, the radially magnetized stator slot-opening PM (RMSS-PM) machines, and the compound magnetized stator slot-opening PM (CMSS-PM) machines. The associated working principle and electromagnetic performance of different SS-PM machines can be diverse. Therefore, this paper gives an overview of SS-PM machines in terms of machine design, working principle, and machine performance. A qualitative performance evaluation and comparative study of SS-PM machines are presented, and the future challenges and potential opportunities in the SS-PM machine design are discussed.

show abstract

“…However, the torque per PM usage is reduced with the Halbach array. And it brings other problems like manufacturing difficulty and relatively lower mechanical reliability [119][120].…”

Section: Discussion and Summary 1) Pm-excited Machinesmentioning

confidence: 99%

Overview of Stator Slot-Opening Permanent Magnet Machines

Niu

Wang

Zhao

2023

IEEE Trans. Transp. Electrific.

View full text Add to dashboard Cite

show abstract

“…Coil winding refers to various processes involved in forming a continuous copper wire (usually circular in cross-section) into a complete coil or series of connected coils for integration into a machine stator or rotor. Traditional winding processes can be categorised into linear winding, needle winding, flyer winding, or pullin winding [3]. All of these methods involve the seamless forming of an individual coil from single continuous strand of wire, although the individual coils which are combined to form a particular phase winding are often joined to each other with some form of electrical joint.…”

Section: Electrical Machine Manufacture and Process Controlmentioning

confidence: 99%

Augmented classification for electrical coil winding defects

Farnsworth

Tiwari

Zhang

et al. 2022

Int J Adv Manuf Technol

View full text Add to dashboard Cite

A green revolution has accelerated over the recent decades with a look to replace existing transportation power solutions through the adoption of greener electrical alternatives. In parallel the digitisation of manufacturing has enabled progress in the tracking and traceability of processes and improvements in fault detection and classification. This paper explores electrical machine manufacture and the challenges faced in identifying failures modes during this life cycle through the demonstration of state-of-the-art machine vision methods for the classification of electrical coil winding defects. We demonstrate how recent generative adversarial networks can be used to augment training of these models to further improve their accuracy for this challenging task. Our approach utilises pre-processing and dimensionality reduction to boost performance of the model from a standard convolutional neural network (CNN) leading to a significant increase in accuracy.

show abstract

“…form-fit, force-fit, and firmly bonded. 19 Final assembly: Finally, the stator and rotor are fitted into the housing, whilst all the other components including bearings, end shields, sensors are assembled, and the machine is tested using end of line tests (EoL).…”

Section: Overview Of the Manufacturing Process Of An Electric Motormentioning

confidence: 99%

In-process monitoring in electrical machine manufacturing: A review of state of the art and future directions

Tiwari

Farnsworth

Zhang

et al. 2021

Proceedings of the Institution of Mechanical Engineers, Part B:

View full text Add to dashboard Cite

Manual operations feature prominently in the manufacture of many electrical machines. Even though high-volume electrical machine manufacture is dominated by automation, several manufacturing operations continue to involve manual intervention because of the complexity of such operations makes them heavily reliant on high dexterity manual skills and experience. However, quality can be variable due to human involvement. Currently, in order to maintain a high precision of control and required tolerances of the final machine, inspection is performed at various steps during manufacturing and assembly. Detecting a defect at these end-of-line tests can result in significant wasted time and costs due to rework or scrappage. The solution to this problem lies in in-process monitoring particularly for error prone manual operations. This paper presents a literature review of the state-of-the-art available techniques and limitations in process monitoring within the context of electrical machine manufacturing. To quantify the degree of manual activities in process monitoring within electrical machine manufacture, a structured survey of UK based companies was conducted, identifying specific error prone manual processes to target, and gaps in inspection. The survey identified that a significant proportion of activities in electrical machine manufacture are manual, or semi-automated with manual interventions. However, literature review revealed only a limited research in in-process monitoring of manual operations in this area. Finally, two case studies are presented where case study 1 presents a framework for digitisation of a variety of manual manufacturing tasks, and case study 2 demonstrates real-time capture, modelling and analysis of deformable linear objects in electrical machine manufacturing.

show abstract

Manufacturing Imperfections in Electric Motor Production with Focus on Halbach Array Permanent Magnet Rotor Assembly

Cited by 11 publications

References 21 publications

Overview of Stator Slot-Opening Permanent Magnet Machines

Overview of Stator Slot-Opening Permanent Magnet Machines

Augmented classification for electrical coil winding defects

In-process monitoring in electrical machine manufacturing: A review of state of the art and future directions

Contact Info

Product

Resources

About