Design Optimization of a Synchronous Homopolar Motor with Ferrite Magnets for Subway Train

Dmitrievskii, Vladimir; Prakht, Vladimir; Kazakbaev, Vadim

doi:10.3390/math11030589

Cited by 5 publications

(20 citation statements)

References 30 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The experimental motor is a pre-production prototype of an IPMSM, which was developed for automotive compressors. It was developed while prioritizing reliability and cost efficiency, with the help of recommendations provided in [46][47][48]. The motor parameters are provided in Table 1, and it should be noted that the motor inductances and rotor flux are almost stable and vary less than 5% in the whole operational range.…”

Section: Methodsmentioning

confidence: 99%

Comparison of Feedback Field-Weakening Techniques for Synchronous Machines with Permanent Magnets

Dianov

2023

Vehicles

View full text Add to dashboard Cite

In recent decades the market share of electrical cars has increased significantly, which has paved the way for the development of automotive electronics. Some of the most important parts of modern electrical vehicles are motor drives, which are used in car training and mechanization. Electrical drives are used in powertrains for traction, in air conditioning systems to cool cars and their parts, in doors for opening/closing as well as window movements, etc. The most popular motor type in electrical vehicles is synchronous motors with permanent magnets, which are compact and provide high torque. However, these motors require the development of control systems for proper operation. This system has to have the capacity to implement several state-of-the-art techniques, which can fully utilize motor potential, increase its efficiency, and decrease battery usage. One of these techniques is field-weakening, which overcomes speed limitations due to a lack of supply voltage and increases the motor’s speed operation range. This paper discusses the most popular approaches to field-weakening, including a new method proposed by the author. It considers both the pros and cons of each approach and provides recommendations for their usage. After that, this manuscript demonstrates the experimental results of each field-weakening technique obtained in the same motor drive, compares their performance, and discusses their strengths and weaknesses. Finally, the experimental part demonstrates that the proposed field-weakening approach demonstrates similar dynamics in load transients but provides 10 times less load to the microcontroller.

show abstract

Section: Methodsmentioning

confidence: 99%

Comparison of Feedback Field-Weakening Techniques for Synchronous Machines with Permanent Magnets

Dianov

2023

Vehicles

View full text Add to dashboard Cite

show abstract

“…However, in electric vehicles that require a wide CPSR, SynRMs have a reduced inverter utilization factor, which significantly increases the power rating and cost of the inverter power modules [6]. This drawback can be overcome, as well as the dimensions of the motor can be reduced by adding inexpensive ferrite magnets to the rotor [14]. Ferrite-assisted SynRMs (FaSynRMs) with high rotor magnetic anisotropy have proven themselves in pumping applications in which a wide CPSR is not required [18][19][20].…”

Section: Literature Overview On the Use Of Ferrite-assisted Synchrono...mentioning

confidence: 99%

“…The utilization of ferrite magnets proves advantageous due to their significantly lower cost compared to rare-earth magnets and their widespread production across numerous countries worldwide [14,15].…”

Section: Introduction 1disadvantages Of Induction Motors and Motors W...mentioning

confidence: 99%

“…In addition, ferrite magnets have no losses due to eddy currents and high-temperature strength [14,16]. A challenge of using ferrites in motor design is their low coercive force [14,17].…”

Section: Introduction 1disadvantages Of Induction Motors and Motors W...mentioning

confidence: 99%

“…In addition, ferrite magnets have no losses due to eddy currents and high-temperature strength [14,16]. A challenge of using ferrites in motor design is their low coercive force [14,17]. For this reason, when optimizing motors with ferrite magnets, special attention must be paid to limiting irreversible demagnetization.…”

Section: Introduction 1disadvantages Of Induction Motors and Motors W...mentioning

confidence: 99%

See 2 more Smart Citations

Performance Comparison of Traction Synchronous Motors with Ferrite Magnets for a Subway Train: Reluctance versus Homopolar Variants

Dmitrievskii,

Kazakbaev,

Prakht

2023

Applied Sciences

Self Cite

View full text Add to dashboard Cite

Due to the high cost and the predicted shortage of rare earth elements in the near future, the task of developing energy-efficient electric machines without rare earth magnets is of great importance. This article presents a comparative analysis of optimized designs of a ferrite-assisted synchronous reluctance machine (FaSynRM) and a ferrite-assisted synchronous homopolar machine (FaSHM) in a 370-kW subway train drive. The objectives of optimizing these traction machines are to reduce their losses, maximum armature current, and torque ripple. The optimization considers the characteristics of the machines in the subway train moving cycle. The problem of the risk of irreversible demagnetization of ferrites in the FaSynRM and FaSHM is also considered. To reduce the computational burden, the Nelder-Mead method is used for the optimization. It is shown that the FaSHM demonstrates better field weakening capability, which can reduce the maximum current, power, and cost of the inverter power modules. At the same time, the FaSynRM requires less permanent magnet mass for the same torque density and is more resistant to irreversible demagnetization, which can reduce costs and improve the reliability of the electric machine.

show abstract

Improved Design of Synchronous Homopolar Motor With Ferrite Magnets With Increased Resistance to Irreversible Demagnetization for Subway Train

Dmitrievskii,

Kazakbaev,

Prakht

et al. 2024

IEEE Access

View full text Add to dashboard Cite

Design Optimization of a Synchronous Homopolar Motor with Ferrite Magnets for Subway Train

Cited by 5 publications

References 30 publications

Comparison of Feedback Field-Weakening Techniques for Synchronous Machines with Permanent Magnets

Comparison of Feedback Field-Weakening Techniques for Synchronous Machines with Permanent Magnets

Performance Comparison of Traction Synchronous Motors with Ferrite Magnets for a Subway Train: Reluctance versus Homopolar Variants

Improved Design of Synchronous Homopolar Motor With Ferrite Magnets With Increased Resistance to Irreversible Demagnetization for Subway Train

Contact Info

Product

Resources

About