A comparative analysis of power density for single-stage and dual-stage magnetic gear with rare-earth magnets and non rare-earth magnets

2016 ◽  
Vol 51 (1) ◽  
pp. 83-89 ◽  
Author(s):  
Chan-Ho Kim ◽  
Sang-Yong Jung ◽  
Yong-Jae Kim
Keyword(s):  
Rare Earth ◽  
Comparative Analysis ◽  
Power Density ◽  
Single Stage ◽  
Dual Stage ◽  
Magnetic Gear

scholarly journals A Comparative Study of GaN HEMT and Si MOSFET-Based Active Clamp Forward Converters

Energies ◽  
2020 ◽  
Vol 13 (16) ◽  
pp. 4160
Author(s):  
Xiaobin Li ◽  
Hongbo Ma ◽  
Junhong Yi ◽  
Song Lu ◽  
Jianping Xu
Keyword(s):  
Comparative Analysis ◽  
Power Density ◽  
Load Condition ◽  
High Electron ◽  
Power Devices ◽  
Voltage Range ◽  
Gan Hemt ◽  
Active Clamp ◽  
Forward Converters ◽  
Bus Voltage

Compared with conventional forward converters, active clamp forward (ACF) converters have many advantages, including lower voltage stress on the primary power devices, the ability to switch at zero voltage, reduced EMI and duty cycle operation above 50%. Thus, it has been the most popular solution for the low bus voltage applications, such as 48 V and 28 V. However, because of the poor performance of Si MOSFETs, the efficiency of active clamp forward converters is difficult to further improved. Focusing on the bus voltage of 28 V with 18~36 V voltage range application, the Gallium Nitride high electron-mobility transistors (GaN HEMT) with ultralow on-resistance, low parasitic capacitances, and no reverse recovery, is incorporated into active clamp forward converters for achieving higher efficiency and power density, in this paper. Meanwhile, the comparative analysis is performed for Si MOSFET and GaN HEMT. In order to demonstrate the feasibility and validity of the proposed solution and comparative analysis, two 18~36 V input, 120 W/12 V output, synchronous rectification prototype with different power devices are built and compared in the lab. The experimental results show the GaN version can achieve the efficiency of 95.45%, which is around 1% higher than its counterpart under the whole load condition and the same power density of 2.2 W/cm3.

Comparative analysis of the magnetoelectric drive with linear drives of low-speed single-stage piston units

2020 ◽  
Author(s):  
A. A. Tatevosyan ◽  
S. S. Busarov ◽  
R. E. Kobyl'skiy ◽  
T. A. Zamiralova
Keyword(s):  
Comparative Analysis ◽  
Single Stage ◽  
Low Speed

Analysis and Design of a Single‐Stage Isolated DC / AC Converter for a High‐Power‐Density Onboard AC Inverter

2021 ◽  
Author(s):  
Kenichi Itoh ◽  
Rene Barrera‐Cardenas ◽  
Masanori Ishigaki ◽  
Takahide Sugiyama ◽  
Takanori Isobe ◽  
...  
Keyword(s):  
Power Density ◽  
High Power ◽  
Single Stage ◽  
High Power Density ◽  
Analysis And Design

Single vs. Dual Stage Actuators: Why and When

2002 ◽  
Author(s):  
Fu-Ying Huang ◽  
Tetsuo Semba ◽  
Matthew White
Keyword(s):  
System Dynamics ◽  
Single Stage ◽  
Actuator Dynamics ◽  
Dual Stage ◽  
Dual Stage Actuator

Higher TPI HDD requires lower disturbance and higher error rejection capability. One of the limitations to achieve high error rejection capability is the dynamics of the actuator. Dual stage actuator (DSA) has been considered to replace single stage actuator (SSA) someday because of system dynamics difference and more freedom in servo design that may avoid the constraint of single stage actuator dynamics on servo. SSA and DSA were compared based on their dynamics, servo designs, and TMR benefits. The extendibility and limitations of both systems were studied. The criteria on when DSA would be implemented are also discussed.

scholarly journals Comparative analysis of the signal power density in a real PLC channel and a simulation-based NS-3 environment

2019 ◽  
Vol 1145 ◽  
pp. 012017
Author(s):  
A Karassenko ◽  
D Urazayev ◽  
I Pospelova ◽  
Y Myakochin ◽  
R Hafizov ◽  
...  
Keyword(s):  
Comparative Analysis ◽  
Power Density ◽  
Signal Power ◽  
Simulation Based

scholarly journals High-availability single-stage Stirling coolers with high power density

2020 ◽  
Vol 755 ◽  
pp. 012044
Author(s):  
D. Willems ◽  
B. de Veer ◽  
R. Arts ◽  
J. Mullié ◽  
P. Bollens
Keyword(s):  
Power Density ◽  
High Power ◽  
High Availability ◽  
Single Stage ◽  
High Power Density
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