Design and analysis of a high power density and high efficiency permanent magnet DC motor

2000 ◽  
Vol 209 (1-3) ◽  
pp. 234-236 ◽  
Author(s):  
C.C Hwang ◽  
J.J Chang
Keyword(s):  
Permanent Magnet ◽  
Power Density ◽  
High Power ◽  
High Efficiency ◽  
Dc Motor ◽  
High Power Density ◽  
Permanent Magnet Dc Motor

scholarly journals Design of a high power density, permanent magnet, axial gap DC motor

2002 ◽  
Author(s):  
J.M. Bailey ◽  
R.A. Hawsey ◽  
D.S. Daniel ◽  
R.J. Thomas
Keyword(s):  
Permanent Magnet ◽  
Power Density ◽  
High Power ◽  
Dc Motor ◽  
High Power Density

The Analyse of High-Power Density and High-Efficiency PMSM

2012 ◽  
Vol 516-517 ◽  
pp. 1651-1654
Author(s):  
Bing Yi Zhang ◽  
Sen Wang ◽  
Gui Hong Feng
Keyword(s):  
Optimal Design ◽  
Permanent Magnet ◽  
Power Density ◽  
High Power ◽  
High Efficiency ◽  
Permanent Magnet Synchronous Motor ◽  
Design Strategy ◽  
Synchronous Motor ◽  
Air Gap ◽  
High Power Density

This paper attempts to present an optimal design strategy and characteristics of high-power permanent magnet synchronous motor(PMSM). The structures of rotor lamination, calculation of Air-gap Length, how temperature influences the performance of the motor and the calculation of Xad、Xaq under the equivalent direct axis are presented.

scholarly journals Optimization and Analysis of a High Power Density and Fault Tolerant Starter–Generator for Aircraft Application

Energies ◽  
2020 ◽  
Vol 14 (1) ◽  
pp. 113
Author(s):  
Bo Wang ◽  
Gaurang Vakil ◽  
Ye Liu ◽  
Tao Yang ◽  
Zhuoran Zhang ◽  
...  
Keyword(s):  
Fault Tolerance ◽  
Permanent Magnet ◽  
Power Density ◽  
High Power ◽  
High Efficiency ◽  
Great Effort ◽  
High Power Density ◽  
Element Analysis ◽  
Starter Generator ◽  
Aircraft Application

Permanent magnet synchronous machines provide many dramatic electromagnetic performances such as high efficiency and high power density, which make them more competitive in aircraft electrification, whereas, designing a permanent magnet starter–generator (PMSG), with given consideration to fault tolerance (FT), is a significant challenge and requires great effort. In this paper, a comprehensive FT PMSG design process is proposed which is applied to power systems of turboprops. Firstly, potential slot/pole combinations were selected based on winding factor, harmonic losses and manufacture issues. Then, pursuing high power density, a multiple objective optimization process was carried out to comprehensively rank performances. To meet a fault tolerance target, electrical, magnetic and thermal isolation topologies were investigated and compared, among which 18 slot/12 pole with dual three-phase was selected as the optimal one, with a power density of 7.9 kW/kg. Finally, a finite element analysis verified the performance in normal and post-fault scenarios. The candidate machine has merits concerning high power density and post-fault performance.

scholarly journals Quantitative Comparisons of Six-Phase Outer-Rotor Permanent-Magnet Brushless Machines for Electric Vehicles

Energies ◽  
2018 ◽  
Vol 11 (8) ◽  
pp. 2141 ◽  
Author(s):  
Yuqing Yao ◽  
Chunhua Liu ◽  
Christopher H.T. Lee
Keyword(s):  
Permanent Magnet ◽  
Power Density ◽  
Electric Vehicles ◽  
High Power ◽  
High Efficiency ◽  
Torque Ripple ◽  
High Power Density ◽  
Torque Density ◽  
Outer Rotor ◽  
High Torque

Multiphase machines have some distinct merits, including the high power density, high torque density, high efficiency and low torque ripple, etc. which can be beneficial for many industrial applications. This paper presents four different types of six-phase outer-rotor permanent-magnet (PM) brushless machines for electric vehicles (EVs), which include the inserted PM (IPM) type, surface PM (SPM) type, PM flux-switching (PMFS) type, and PM vernier (PMV) type. First, the design criteria and operation principle are compared and discussed. Then, their key characteristics are addressed and analyzed by using the finite element method (FEM). The results show that the PMV type is quite suitable for the direct-drive application for EVs with its high torque density and efficiency. Also, the IPM type is suitable for the indirect-drive application for EVs with its high power density and efficiency.

scholarly journals Near-field thermophotovoltaics for efficient heat to electricity conversion at high power density

2021 ◽  
Vol 12 (1) ◽  
Author(s):  
Rohith Mittapally ◽  
Byungjun Lee ◽  
Linxiao Zhu ◽  
Amin Reihani ◽  
Ju Won Lim ◽  
...  
Keyword(s):  
Power Density ◽  
High Power ◽  
High Efficiency ◽  
Near Field ◽  
Electrical Power ◽  
Photovoltaic Cells ◽  
High Power Density ◽  
Pv Cell ◽  
Electrical Power Output ◽  
Power Densities

AbstractThermophotovoltaic approaches that take advantage of near-field evanescent modes are being actively explored due to their potential for high-power density and high-efficiency energy conversion. However, progress towards functional near-field thermophotovoltaic devices has been limited by challenges in creating thermally robust planar emitters and photovoltaic cells designed for near-field thermal radiation. Here, we demonstrate record power densities of ~5 kW/m2 at an efficiency of 6.8%, where the efficiency of the system is defined as the ratio of the electrical power output of the PV cell to the radiative heat transfer from the emitter to the PV cell. This was accomplished by developing novel emitter devices that can sustain temperatures as high as 1270 K and positioning them into the near-field (<100 nm) of custom-fabricated InGaAs-based thin film photovoltaic cells. In addition to demonstrating efficient heat-to-electricity conversion at high power density, we report the performance of thermophotovoltaic devices across a range of emitter temperatures (~800 K–1270 K) and gap sizes (70 nm–7 µm). The methods and insights achieved in this work represent a critical step towards understanding the fundamental principles of harvesting thermal energy in the near-field.

High-Power-Density High-Efficiency Bottom-Emitting Vertical-Cavity Surface-Emitting Laser Array

2011 ◽  
Vol 4 (5) ◽  
pp. 052104 ◽  
Author(s):  
Di Liu ◽  
Yongqiang Ning ◽  
Yugang Zeng ◽  
Li Qin ◽  
Yun Liu ◽  
...  
Keyword(s):  
Power Density ◽  
High Power ◽  
High Efficiency ◽  
Cavity Surface ◽  
High Power Density ◽  
Laser Array ◽  
Vertical Cavity Surface ◽  
Surface Emitting Laser ◽  
Vertical Cavity

Novel Hybrid Radial and Axial Flux Permanent-Magnet Machine Using Integrated Windings for High-Power Density

2015 ◽  
Vol 51 (3) ◽  
pp. 1-4 ◽  
Author(s):  
Jung Moo Seo ◽  
Jong-Suk Ro ◽  
Se-Hyun Rhyu ◽  
In-Soung Jung ◽  
Hyun-Kyo Jung
Keyword(s):  
Permanent Magnet ◽  
Power Density ◽  
High Power ◽  
High Power Density ◽  
Axial Flux ◽  
Permanent Magnet Machine

Research on Heavy Truck Cab Tilting Motor

2013 ◽  
Vol 310 ◽  
pp. 343-347
Author(s):  
Wen Fu Zhang ◽  
Xue Yi Zhang ◽  
Jian Long Hu ◽  
Hong Bin Yin
Keyword(s):  
Permanent Magnet ◽  
Small Volume ◽  
Simple Structure ◽  
High Efficiency ◽  
Dc Motor ◽  
Reliable Operation ◽  
Oil Pump ◽  
Heavy Truck ◽  
Permanent Magnet Dc Motor ◽  
Operation Characteristics

Heavy truck cab manual oil pump consumes more time and strength. Using tilting motor can produce larger tilting force for reversing the heavy truck cab and improve the tilting efficiency. The power of tilting motor, permanent magnet, armature plate and winding parameters are optimized on the basis of analyzing the cab tilting system works and the characteristics of the permanent magnet DC motor. The designed Nb-Fe-B PM DC motor is small volume, light weight high efficiency, simple structure and reliable operation characteristics, which can improve the security of tilting device of the heavy truck cab.

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