PMSM and 5-level CSI based boat electrical propulsion system efficiency analysis

2012 ◽  
Author(s):  
Bruno S. Dupczak ◽  
Marcelo L. Heldwein ◽  
Arnaldo J. Perin ◽  
Carlos A. Martins ◽  
Jerome Cros
Keyword(s):  
Efficiency Analysis ◽  
Propulsion System ◽  
System Efficiency ◽  
Electrical Propulsion

A thermally activated paraffin-based actuator for gas-flow control in a satellite electrical propulsion system

2003 ◽  
Vol 105 (3) ◽  
pp. 237-246 ◽  
Author(s):  
Lena Klintberg ◽  
Mikael Karlsson ◽  
Lars Stenmark ◽  
Greger Thornell
Keyword(s):  
Flow Control ◽  
Gas Flow ◽  
Propulsion System ◽  
Thermally Activated ◽  
Electrical Propulsion

scholarly journals System Efficiency Analysis of SOFC Coupling with Air, Mixed Air-Steam and Steam Gasification Fueled by Thailand Rice Husk

2017 ◽  
Vol 21 (4) ◽  
pp. 95-110
Author(s):  
Pannipha Dokmaingam ◽  
Rajesh S. Kempegowda ◽  
Suttichai Assabumrungrat ◽  
Navadol Laosiripojana
Keyword(s):  
Rice Husk ◽  
Efficiency Analysis ◽  
Steam Gasification ◽  
System Efficiency

scholarly journals A Review of Concepts, Benefits, and Challenges for Future Electrical Propulsion-Based Aircraft

Aerospace ◽  
2020 ◽  
Vol 7 (4) ◽  
pp. 44 ◽  
Author(s):  
Smruti Sahoo ◽  
Xin Zhao ◽  
Konstantinos Kyprianidis
Keyword(s):  
Technological Development ◽  
Propulsion System ◽  
New Paradigm ◽  
Modeling Framework ◽  
Future Technology ◽  
Electric Aircraft ◽  
Electrical Propulsion ◽  
Development Paths ◽  
System Configurations ◽  
Insight Into

Electrification of the propulsion system has opened the door to a new paradigm of propulsion system configurations and novel aircraft designs, which was never envisioned before. Despite lofty promises, the concept must overcome the design and sizing challenges to make it realizable. A suitable modeling framework is desired in order to explore the design space at the conceptual level. A greater investment in enabling technologies, and infrastructural developments, is expected to facilitate its successful application in the market. In this review paper, several scholarly articles were surveyed to get an insight into the current landscape of research endeavors and the formulated derivations related to electric aircraft developments. The barriers and the needed future technological development paths are discussed. The paper also includes detailed assessments of the implications and other needs pertaining to future technology, regulation, certification, and infrastructure developments, in order to make the next generation electric aircraft operation commercially worthy.

scholarly journals Numerical Simulation on Hydraulic Characteristics of Nozzle in Waterjet Propulsion System

Processes ◽  
2019 ◽  
Vol 7 (12) ◽  
pp. 915 ◽  
Author(s):  
Chuan Wang ◽  
Xiaoke He ◽  
Li Cheng ◽  
Can Luo ◽  
Jing Xu ◽  
...  
Keyword(s):  
Propulsion System ◽  
Dynamics Simulation ◽  
Transition Curve ◽  
Hydraulic Loss ◽  
Main Function ◽  
System Efficiency ◽  
Hydraulic Characteristics ◽  
Linear Contraction ◽  
Circular Nozzle ◽  
Inlet Duct

As an important over-current component of the waterjet propulsion system, the main function of a nozzle is to transform the mechanical energy of the propulsion pump into the kinetic energy of the water and eject the water flow to obtain thrust. In this study, the nozzle with different geometry and parameters was simulated based on computational fluid dynamics simulation and experiment. Numerical results show a good agreement with experimental results. The results show that the nozzle with a circular shape outlet shrinks evenly. Under the designed flow rate condition, the velocity uniformity of the circular nozzle is 0.26% and 0.34% higher than that of the elliptical nozzle and the rounded rectangle nozzle, respectively. The pump efficiency of the circular nozzle is 0.31% and 0.14% higher than that of the others. The pressure recovery and hydraulic loss of the circular nozzle are superior. The hydraulic characteristics of the propulsion pump and waterjet propulsion system are optimal when the nozzle area is 30% times the outlet area of the inlet duct. Thus, the shaft power, head, thrust, and system efficiency of the propulsion pump and waterjet propulsion system are maximized. The system efficiency curve decreases rapidly when the outlet area exceeds 30% times the outlet area of the inlet duct. The transition curve forms greatly affect thrust and system efficiency. The transition of the linear contraction shows improved uniformity, and the hydraulic loss is reduced. Furthermore, the hydraulic performance of the nozzle with a linear contraction transition is better than that of others.

Two-Stage MPPT Power Regulator for Satellite Electrical Propulsion System

2011 ◽  
Vol 47 (3) ◽  
pp. 1617-1630 ◽  
Author(s):  
Jose M. Blanes ◽  
Ausias Garrigos ◽  
Jose A. Carrasco ◽  
Alan H. Weinberg ◽  
Enrique Maset ◽  
...  
Keyword(s):  
Propulsion System ◽  
Two Stage ◽  
Power Regulator ◽  
Electrical Propulsion

Methodology to qualify marine electrical propulsion system architectures for platform supply vessels

2018 ◽  
Vol 8 (2) ◽  
pp. 152-165 ◽  
Author(s):  
Srinivasarao Kamala ◽  
Priyesh J. Chauhan ◽  
Sanjib K. Panda ◽  
Gary Wilson ◽  
Xiong Liu ◽  
...  
Keyword(s):  
Propulsion System ◽  
System Architectures ◽  
Electrical Propulsion
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