Improvement of power density spoke type Permanent Magnet Generator

Firdaus, R. N.; Suhairi, R.; Farina, S.; Karim, Kasrul Abdul; Ibrahim, Zulkifilie

doi:10.1109/peds.2015.7203400

Cited by 6 publications

(4 citation statements)

References 6 publications

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“…where α is the angle of the permeance line slope, P After obtaining the operating point of the permanent magnet, the maximum flux can be calculated by using Equations (13)- (15).…”

Section: Analytical and Numerical Analysismentioning

confidence: 99%

“…Another model of BLDC motor known as hollow rotor was proposed before, which has high torque density compared to the conventional spoke motor, but the disadvantage of a single stator is that the optimum efficiency can be achieved only at a certain speed [15]. Chai et al's research studied the split ratio between the outer stator and inner stator concluded that a proper matching of the outer and inner split ratios helped to improve the performance of the double-stator motor [16].…”

Section: Introductionmentioning

confidence: 99%

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Torque Constant Density in Different Type of Double Stator Permanent Magnet Brushless Dc Motor

Firdaus¹,

Zuki²,

Suhairi³

et al. 2018

PIER M

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This paper discusses the torque constant density in different types of Double Stator Permanent Magnet Brushless DC Motor (DSPM) which are designed for portable applications. It should have high torque constant density so that it will have higher torque as well as lightweight. Previously, there have been many DSPM motor designs that only focus on increasing the torque constant and torque density. However, it is unclear which DSPM motor is the best since the torque constant and torque density are different parameters. Torque constant density will include the torque, volume and current of the motor. The objective of this research is to analyze different types of DSPM motors including the proposed Slotted Rotor DSPM motor (DSPM-SR) which produces higher torque constant density. Besides that, this paper also describes in detail the torque constant density from an electromagnetic point of view. Finite Element Analysis (FEA) and analytical calculation are used to simulate the characteristic of various double stators. The result shows that DSPM-SR has 90.5% higher back electromotive force (emf) and 87.5% higher torque than DSPM-ST. Besides that, the DSPM-SR topology has higher torque constant density about 67.27% than other DSPM motors. As a conclusion, this paper provides the overview and comparison of torque constant densities of various DSPM motors.

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“…where α is the angle of the permeance line slope, P After obtaining the operating point of the permanent magnet, the maximum flux can be calculated by using Equations (13)- (15).…”

Section: Analytical and Numerical Analysismentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Torque Constant Density in Different Type of Double Stator Permanent Magnet Brushless Dc Motor

Firdaus¹,

Zuki²,

Suhairi³

et al. 2018

PIER M

View full text Add to dashboard Cite

show abstract

“…Spoke type permanent magnet machine is widely used in industry application [20][21][22]. DSST-PMG has a rotor structure of interior type permanent magnet with higher saliency ratios since it is made up of ferromagnetic material and usually used in high speed applications because permanent magnet is embedded in the rotor.…”

Section: Double Stator Spoke Type Permanent Magnet Generator (Dsst-pmg)mentioning

confidence: 99%

Performance Characteristics of Non-Arc Double Stator Permanent Magnet Generator

Suhairi¹,

Firdaus²,

Aishah³

et al. 2017

PIER M

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Abstract-The improvement in the power density in the double stator configurations is feasible with increase in the electrical loading of the electrical machines. This type of newer configuration is finding significant applications in improvising energy generation, more commonly for renewable energy generation. Various double stator configurations with non-arc permanent magnet machines for power density are modelled and analyzed in this paper. Finite Element Method (FEM) is used to simulate for the generation capability including the electromagnetics parameters such as flux linkage and open circuit voltage. A new slotted rotor structure is evolved based on the magnetic flux flow control inside the machine. The proposed structure is then fabricated in the laboratory and tested for operating characteristics with load circuit. The proposed machine produces a maximum power of 600 W at speed of 2000 rpm with 75% of maximum efficiency with the micro-hydro generation unit.

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“…In this paper, a new Halbach array PM Vernier machine with alternative flux bridges in the rotor is proposed and analyzed. On the one hand, the magnetic field can be improved in the proposed structure due to a magnetic-concentrating effect [20]. On the other hand, these bridges improve the PM circuit by providing a flux path for the low pole-pair working magnetic field.…”

Section: Introductionmentioning

confidence: 99%

Design Optimization and Comparative Study of a Novel Halbach Permanent Magnet Vernier Machine with Alternate Flux Bridge

et al. 2023

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The purpose of this paper is to investigate the effect of the alternate flux bridge combining Halbach array in Vernier machines. The key novelty is that integrated with the Halbach array PM, the alternate flux bridge design can not only provide a flux path for low-order harmonics but also effectively improve the torque density of the machine. Together with the other three traditional structures under the same overall size, current density, and PM usage, the proposed structure is optimized by genetic algorithm (GA) to maximize the average torque and minimize the torque ripple. With the winding configuration of full-pitch (FP) and short-pitch (SP), the back-EMF, efficiency, power factor, and other performances of four machines with different topologies are analyzed and compared, respectively. With 2D time stepping finite element analysis (FEA) and experimental verification, the torque density of the proposed design reaches 40.11 KNm/m3, which is significantly higher than that of its existing counterparts.

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Improvement of power density spoke type Permanent Magnet Generator

Cited by 6 publications

References 6 publications

Torque Constant Density in Different Type of Double Stator Permanent Magnet Brushless Dc Motor

Torque Constant Density in Different Type of Double Stator Permanent Magnet Brushless Dc Motor

Performance Characteristics of Non-Arc Double Stator Permanent Magnet Generator

Design Optimization and Comparative Study of a Novel Halbach Permanent Magnet Vernier Machine with Alternate Flux Bridge

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