Low Cost and High Power Density PM-Assisted Synchronous Reluctance Machine Drive System for Automotive Engine Torque Management

Author(s):  
Lei Hao ◽  
Chandra Namuduri ◽  
Chandra Mavuru ◽  
Suresh Gopalakrishnan ◽  
Thomas Nehl
Author(s):  
Xiping Liu ◽  
Ya Li ◽  
Zhangqi Liu ◽  
Tao Ling ◽  
Zhenhua Luo

Purpose The purpose of this paper is to propose a permanent magnet-assisted synchronous reluctance machine (PMASynRM) using ferrite magnets with the same power density as rare-earth PM synchronous motors used in Toyota Prius 2010. Design/methodology/approach A novel rotor structure with rectangular PMs is discussed with respect to the demagnetization of ferrite magnets and mechanical strength. Some electromagnetic characteristics including torque, output power, loss and efficiency are calculated by 2D finite element analysis. Findings The results of the analysis show that a high power density and high efficiency for PMASynRM can be achieved using ferrite magnets. Originality/value This paper proposes a novel rotor structure of PMASynRM with low-cost ferrite magnets that achieves high power density as permanent machines with rare-earth PMs.


1998 ◽  
Vol 34 (5) ◽  
pp. 1072-1080 ◽  
Author(s):  
Yue Li ◽  
T.A. Walls ◽  
J.D. Lloyd ◽  
J.L. Skinner

2017 ◽  
Vol 66 (2) ◽  
pp. 279-293 ◽  
Author(s):  
Xiping Liu ◽  
Ya Li ◽  
Zhangqi Liu ◽  
Tao Ling ◽  
Zhenhua Luo

AbstractThis paper proposes a permanent magnet (PM)-assisted synchronous reluctance machine (PMASynRM) using ferrite magnets with the same power density as rareearth PM synchronous motors employed in Toyota Prius 2010. A suitable rotor structure for high torque density and high power density is discussed with respect to the demagnetization of ferrite magnets, mechanical strength and torque ripple. Some electromagnetic characteristics including torque, output power, loss and efficiency are calculated by 2-D finite element analysis (FEA). The analysis results show that a high power density and high efficiency of PMASynRM are obtained by using ferrite magnets.


2019 ◽  
Vol 3 (5) ◽  
pp. 1269-1282 ◽  
Author(s):  
Om Prakash ◽  
Karun Kumar Jana ◽  
Murli Manohar ◽  
Vinod K. Shahi ◽  
Saif A. Khan ◽  
...  

Advanced membrane was designed by creating nanochannels using swift heavy ions from an accelerator. Fuel cell was fabricated using the novel membrane and demonstrated high power density as compared to standard Nafion.


2017 ◽  
Vol 5 (29) ◽  
pp. 15144-15153 ◽  
Author(s):  
Si-Wen Zhang ◽  
Bo-Si Yin ◽  
Chang Liu ◽  
Zhen-Bo Wang ◽  
Da-Ming Gu

For the next-generation energy-storage devices, high power density supercapacitors can be used as complementary power supplies.


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