A Full-Pitched Flux-Switching Permanent-Magnet Motor

Permanent magnet flux switching machines (FSPMs) have attracted considerable attention in recent years, due to their outstanding characteristics to operate as brushless AC drives. Since they are relatively new, there are particular challenges not only for their design procedure but also for their operating principle comprehension. This study highlights several issues on FSPMs from the basic operation description to their key design points. After a comprehensive description of FSPMs working principles, a detailed discussion is presented on their armature winding design. In addition, this study reviews various methods for their performance modification, including torque profile, electromotive force, and loss characteristics. This study also surveys field regulation technologies, modelling and design optimisation methods applied to FSPMs along with their fabrication and cost issues.

Section: Torque Capabilitymentioning

confidence: 99%

“…Hence, the winding layout and connections can be determined by

P_{a} = (||, 12 - 14) = 2

. In other words, an alternative way to determine the

α_{e}

is based on

P_{a}

, which is similar to the conventional procedure applied to the conventional electrical machines [29, 34, 41, 46]

α_{e} = P_{a} \frac{π}{T_{s}}

Creating the slot EMF vector diagram using (8) is more straightforward because it is independent of the direction of the PMs magnetisation.…”

Section: Armature Windingmentioning

confidence: 99%

Performance modifications and design aspects of rotating flux switching permanent magnet machines: a review

Nobahari

Aliahmadi

Faiz

2019

“…In recent years, flux-switching permanent magnet (FSPM) motors, as a new member of brushless PM motors, have gained considerable attention because of robust rotor structure, high torque/power density, and easy thermal management potential [21][22][23][24]. In this paper, by introducing the concept of partitioned rotor configuration and LRE PM topology into the conventional FSPM motor [25][26][27][28], the LRE-FSPM motor is selected and taken as an example for demagnetisation investigation.…”

Section: Motor Structurementioning

confidence: 99%

Dynamic demagnetisation investigation for less‐rare‐earth flux switching permanent magnet motors considering three‐phase short‐circuit fault

Fan

Zhu

Quan

et al. 2018

Self Cite

This study presents dynamic demagnetisation investigations of less-rare-earth (LRE) flux switching permanent magnet (LRE-FSPM) motor under three-phase short-circuit (SC) fault. Owing to relatively low coercivity of ferrite PMs, it is necessary to investigate demagnetised risk of LRE PM motors. Actually, motors suffer from larger demagnetising risk under SC faults than normal conditions. Hence, it is essential for LRE PM motors to comprehensively investigate and enhance antidemagnetisation capability during design stage. Here, by integrating electrical-magnetic field calculation and driving control circuit, dynamic demagnetisation characteristics of the LRE-FSPM motor under SC faults are calculated as an example. To fairly evaluate demagnetisation withstand capability of LRE-FSPM motor, the non-rare-earth (NRE)-FSPM motor is also presented and compared as a referenced motor. Then, the dynamic demagnetisation characteristics of two motors are analysed and compared, including demagnetising d-axis current, operating points, and demagnetised area. It is found that, the proposed LRE-FSPM motor exhibits improved operating points and less demagnetised area, which is only about one-third of that of NRE-FSPM motor. Finally, the demagnetisation calculation results not only verify the validity of dynamic demagnetisation investigation approach, but also prove the reasonability of LRE-FSPM motor, which provide a promising research path for the design of LRE PM motors.

“…In [16], a multi‐tooth FSPM motor is proposed, its electromagnetic parameters are investigated by two‐ (2D) and 3D finite‐element method (FEM) and the results’ accuracy is verified by experimental testing. In [17], a three‐phase FSPM and 12/7 pole motor with full‐pitch winding is introduced. In [18], two FSPM motors with an external rotor structure having V‐ and I‐shaped magnets are compared and it has been shown that the V‐FSPM motor has a higher‐output torque density than the I‐FSPM motor.…”

Section: Introductionmentioning

confidence: 99%

Introducing a novel FSPM motor with double rotor and toroidal windings

Jafarboland

Sargazi

2020

In this study, a new flux‐switching permanent‐magnet (FSPM) motor with two rotors and toroidal coil are introduced. First, the proposed FSPM (PFSPM) motor structure and performance principles are presented. Then, the performance parameters of the PFSPM motor, including flux linkage, back‐electromotive force, air‐gap flux distribution, inductance, eddy current loss, cogging torque and the output electromagnetic torque are compared with a conventional FSPM motor based on finite‐element analysis. Then, the effect of the angle between the two‐rotor poles on the performance parameters of the PFSPM motor is indicated. Finally, the PFSPM motor model is manufactured and the results of the finite‐element test are compared with the results of the experimental test and the accuracy of the finite‐element model is confirmed.