Flux-Focusing Permanent Magnet Machines With Modular Consequent-Pole Rotor

Li, J.; Wang, Kai; Zhang, H.

doi:10.1109/tie.2019.2922922

Cited by 38 publications

(18 citation statements)

References 31 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…3, a high degree of freedom exists when designing a rotor for IPM machines with V‐shaped PMs. Investigated design parameters are chosen as a result of experience gained through numerous investigations and comprehensive literature [6–48]. On the other hand, other key parameters, such as stator outer diameter, stator slot geometry, shaft diameter, air‐gap length,

D_{2}

normalH R_{i b}

and

w_{s}

have not been considered in this paper because of these reasons: (i) their predicted obvious and/or insignificant effects (particularly due to the leakage flux); (ii) limited effects as a consequence of existing of mechanical constrains; (iii) their very limited range; (iv) not reasonable or possible to investigate its individual effect.…”

Section: Influences Of Design Parameters On Fw Performance Of Nsw Ipmmentioning

confidence: 99%

“…The steady state and FW performance characteristics of IPM machines are primarily affected by magnetic design, depending on stator/rotor topology and excitation, and sophisticated FW control techniques. From magnetic design point of view, extensively employed performance improvement methods, particularly for FW operation, are classified as follows: Winding topologies [10–16]; PM layer number, shape and position [17–23]; Flux barrier configuration and position [24–29]; PM segmentation [19, 30–34]; PM skewing [35–38]; Novel rotor topology [39–41]; Rotor shape optimisation [42–45]; Other techniques, such as excitation, axial lamination, damper bars and so on [31, 46–48]. …”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Influence of design parameters on flux‐weakening performance of interior permanent magnet machines with novel semi‐overlapping windings

Gündoğdu

Kömürgöz

2020

IET Electric Power Applications

View full text Add to dashboard Cite

This study performs a design and parametric study of interior permanent‐magnet (IPM) machines equipped with novel semi‐overlapping windings (NSWs). The influence of the key design parameters including; number of turns per phase, stack length, distance and angle between V‐shaped magnets, rotor yoke thickness, magnetic bridge width and thickness and number of magnet segments on the flux‐weakening (FW) performance characteristics are evaluated in detail. The influence of material of segmentation (material of bridge namely, air or iron) is also considered. A combination of analytical calculation‐based program and a time‐stepping 2D finite‐element analysis based program are employed to evaluate the FW characteristics. The accuracy of the FW calculations, particularly the performance at high‐speed regions, is verified over changes in torque components; namely reluctance and permanent magnet (PM), inductance components, PM flux coefficient and inverse saliency ratio due to the change in considered design parameter. The electromagnetic torque, torque ripple, output power and FW capability are investigated by parametric analyses. Moreover, the power losses and efficiency maps together FW curves are calculated for the optimal NSW IPM machine. The experimental measurements, taken from manufactured prototype, verify that the performed analyses and methods described in this study are accurate and reliable.

show abstract

D_{2}

normalH R_{i b}

and

w_{s}

Section: Influences Of Design Parameters On Fw Performance Of Nsw Ipmmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Influence of design parameters on flux‐weakening performance of interior permanent magnet machines with novel semi‐overlapping windings

Gündoğdu

Kömürgöz

2020

IET Electric Power Applications

View full text Add to dashboard Cite

show abstract

“…The article aims to provide designers with examples of electric motors and results on the use of various analysis techniques on electric motors. K. Wang et al [2] in this article, the Modular Consequent Pole (MCP) rotor is integrated into the Internal Permanent Magnet (IPM) machine with a broken slot to take advantage of the powerful flow focusing effect and reduce leakage flow. Therefore, it is possible to improve the torque density and the utilization ratio of the PM material.…”

Section: Literature Reviewmentioning

confidence: 99%

Optimized Thermal Efficiency of Rotor and Stator Using CFD

Hussain

Pouranik

2020

IJOSCIENCE

View full text Add to dashboard Cite

The space between rotor and stator plays a very important role in the design and performance of rotating machinery. The thickness of the gap can vary considerably depending on the size and operating conditions for the different types of rotating machines. Analysis the air velocity and temperature distribution over the air flow gap in stator and motor. Changing the design of rotor to develop turbulence in air flow gap. Compare the velocity and temperature distribution of proposed design with previous studies. The simulation results pinpoint also the periodic heat transfer pattern from the rotor surface and this provides useful information for the prediction of the temperature distribution inside the rotating electrical machine. The simulation results of case-1 show about 117°C temperature inside the rotor machine. Then increase the number of slot inside the rotor machine the total temperature of the rotor machine decreases up to 76°C. Due to low temperature total efficiency of the system increases. And also reduces the loss due to heat. The turbulence effect inside the rotor increase in third case. Due to turbulence effect the air cover large amount of area inside the rotor. So total temperature of the rotor casing decreases. In a system where volume is held constant, there is a direct relationship between Pressure and Temperature. For this case, when the pressure increases then the temperature also increases. When the pressure decreases, then the temperature decreases. So pressure in third case decrease upto1.26Pa and temperature 76 °C.

show abstract

“…To relatively compare airgap flux density and sensitivity between SPM machine and spoke-type PM machine with respect to the permeance coefficient, we define three relative comparison indexes using equations (12) to (15):…”

Section: ≤ K Mgmentioning

confidence: 99%

“…To achieve higher efficiency, permanent magnet (PM) machines are widely used instead of induction or DC motors [1]- [5]. Specifically, flux-concentrating structures, such as spoke-type PM machines or V-shaped PM machines, are continuously developed [6]- [12] because they can provide higher open-circuit airgap flux (OCAF) when compared to the conventional PM machines.…”

Section: Introductionmentioning

confidence: 99%

Sensitivity Comparison of Open-Circuit Airgap Flux Between Surface-Mounted Permanent Magnet and Spoke-Type Permanent Magnet Machines Considering Manufacturing Tolerances

Jun

Kwon

2019

IEEE Access

View full text Add to dashboard Cite

The study compares the sensitivities of open-circuit airgap flux (OCAF) between a surfacemounted permanent magnet (SPM) machine and a spoke-type PM machine based on variations in airgap length including additional airgaps between permanent magnets and rotor core and between segmented stator cores to achieve high quality electric machines. Analytical equations deduced from magnetic equivalent circuits (MECs) are used to directly compare natural-born characteristics of the OCAF of the two machines. First, the MEC of each machine is modeled by considering two additional airgaps between the PMs and rotor core and between the segmented stator cores. Second, the OCAF equation of each machine is derived from the MEC to analyze the effects of the design variables on the OCAF. Subsequently, the partial derivative equation of the OCAF equation with respect to the airgap length is obtained for sensitivity analysis. A comparison of the equations of the two machines indicates that the spoke-type PM machine exhibits inherently higher sensitivity and average value of the OCAF when compared to that of the SPM machine. Finally, the results are validated via a two-dimensional finite element method (FEM) by considering the variations in airgap lengths.

show abstract

Flux-Focusing Permanent Magnet Machines With Modular Consequent-Pole Rotor

Cited by 38 publications

References 31 publications

Influence of design parameters on flux‐weakening performance of interior permanent magnet machines with novel semi‐overlapping windings

Influence of design parameters on flux‐weakening performance of interior permanent magnet machines with novel semi‐overlapping windings

Optimized Thermal Efficiency of Rotor and Stator Using CFD

Sensitivity Comparison of Open-Circuit Airgap Flux Between Surface-Mounted Permanent Magnet and Spoke-Type Permanent Magnet Machines Considering Manufacturing Tolerances

Contact Info

Product

Resources

About