Magnetic circuit design method for magnetic force control systems using inverse magnetostrictive effect: Examination of energy conversion efficiency depending on ?E effect

2002 ◽  
Vol 140 (1) ◽  
pp. 8-15 ◽  
Author(s):  
Toshiyuki Ueno ◽  
Jinhao Qiu ◽  
Junji Tani
Keyword(s):  
Energy Conversion ◽  
Control Systems ◽  
Circuit Design ◽  
Conversion Efficiency ◽  
Force Control ◽  
Magnetic Force ◽  
Magnetic Circuit ◽  
Design Method ◽  
Energy Conversion Efficiency

scholarly journals Magnetic Circuit Design Method for Magnetic Force Control Systems Using Inverse Magnetostrictive Effect

2001 ◽  
Vol 121 (8) ◽  
pp. 771-777
Author(s):  
Toshiyuki Ueno ◽  
Jinhao Qiu ◽  
Junji Tani
Keyword(s):  
Control Systems ◽  
Circuit Design ◽  
Force Control ◽  
Magnetic Force ◽  
Magnetic Circuit ◽  
Design Method

scholarly journals Generator Design Considering Mover Action to Improve Energy Conversion Efficiency in a Free-Piston Engine Generator

Electronics ◽  
2021 ◽  
Vol 10 (17) ◽  
pp. 2142
Author(s):  
Mitsuhide Sato ◽  
Shoma Irie ◽  
Jianping Zheng ◽  
Tsutomu Mizuno ◽  
Fumiya Nishimura ◽  
...  
Keyword(s):  
Energy Conversion ◽  
Conversion Efficiency ◽  
Design Method ◽  
Energy Conversion Efficiency ◽  
Field Analysis ◽  
Piston Engine ◽  
Free Piston ◽  
Engine Efficiency ◽  
Free Piston Engine ◽  
Linear Generators

In a free-piston engine generator (FPEG), the power of the engine can be directly regenerated by linear generators without a crank. The mover motion of this system is interrelated with engine and power generation efficiencies due to the direct connection between the mover of the generator and the piston of the engine. The generator should be designed to improve the overall energy conversion efficiency. The dimensions and mass of the mover limit its operating stroke and drive frequency. Herein, we propose a method for designing linear generators and constructing FPEG systems, considering the mover operation to improve engine efficiency. We evaluated the effect of mover operation on the engine and generation efficiencies using thermal and electromagnetic field analysis software. The proposed design method improves the overall energy conversion efficiency compared with a generator that considers only the maximization of generation efficiency. Setting the mover operation for higher engine efficiency and designing a linear generator to realize the operation can effectively improve the energy conversion efficiency of FPEGs.

Branched ZnO Nanowires for Enhancing Energy Conversion Efficiency of Dye-Sensitized Solar Cells

2008 ◽  
Author(s):  
Hsin-Ming Cheng ◽  
Wei-Hao Chiu ◽  
Chia-Hua Lee ◽  
Song-Yeu Tsai ◽  
Wen-Feng Hsieh
Keyword(s):  
Solar Cells ◽  
Energy Conversion ◽  
Conversion Efficiency ◽  
Dye Sensitized Solar Cells ◽  
Energy Conversion Efficiency ◽  
Zno Nanowires ◽  
Dye Sensitized ◽  
Sensitized Solar Cells

First-principles study on the electronic and optical properties of the orthorhombic CsPbBr3 and CsPbI3 with Cmcm space group

2021 ◽  
Author(s):  
Xianhao Zhao ◽  
Tianyu Tang ◽  
Quan Xie ◽  
like gao ◽  
Limin Lu ◽  
...  
Keyword(s):  
Optical Properties ◽  
Solar Cells ◽  
Energy Conversion ◽  
Conversion Efficiency ◽  
First Principles ◽  
Energy Conversion Efficiency ◽  
Space Group ◽  
Absorbing Materials ◽  
Halide Perovskites ◽  
Lead Halide

The cesium lead halide perovskites are regarded as effective candidates for light-absorbing materials in solar cells, which have shown excellent performances in experiments such as promising energy conversion efficiency. In...

Sodium Vanadate/PEDOT Nanocables Rich with Oxygen Vacancies for High Energy Conversion Efficiency Zinc Ion Batteries

2021 ◽  
Author(s):  
Wenchao Bi ◽  
Guohua Gao ◽  
Guangming Wu ◽  
Muhammad Atif ◽  
Mohamad Alsalhi ◽  
...  
Keyword(s):  
Energy Conversion ◽  
Conversion Efficiency ◽  
Oxygen Vacancies ◽  
Energy Conversion Efficiency ◽  
High Energy ◽  
Zinc Ion ◽  
Sodium Vanadate ◽  
High Energy Conversion Efficiency

Metal-like electrical conductivity in LaxSr2−xTiMoO6 oxides for high temperature thermoelectric power generation

2017 ◽  
Vol 46 (18) ◽  
pp. 5872-5879 ◽  
Author(s):  
Mandvi Saxena ◽  
Tanmoy Maiti
Keyword(s):  
Power Generation ◽  
Electrical Conductivity ◽  
High Temperature ◽  
Energy Conversion ◽  
Thermoelectric Power ◽  
Conversion Efficiency ◽  
Energy Conversion Efficiency ◽  
Power Generators ◽  
Thermoelectric Power Generation

Increasing electrical conductivity in oxides, which are inherently insulators, can be a potential route in developing oxide-based thermoelectric power generators with higher energy conversion efficiency.

Performance Improvements in Cooker-Top Gas Burners for Small Aspect Ratio Changes

2017 ◽  
Vol 9 (4) ◽  
Author(s):  
Robson L. Silva ◽  
Bruno V. Sant′Ana ◽  
José R. Patelli ◽  
Marcelo M. Vieira
Keyword(s):  
Energy Conversion ◽  
Fuel Consumption ◽  
Conversion Efficiency ◽  
Minimum Energy ◽  
Energy Conversion Efficiency ◽  
Energy Performance ◽  
Operating Conditions ◽  
Lower Fuel Consumption ◽  
Performance Improvements ◽  
Aspect Ratios

This paper aims to identify performance improvements in cooker-top gas burners for changes in its original geometry, with aspect ratios (ARs) ranging from 0.25 to 0.56 and from 0.28 to 0.64. It operates on liquefied petroleum gas (LPG) and five thermal power (TP) levels. Considering the large number of cooker-top burners currently being used, even slight improvements in thermal performance resulting from a better design and recommended operating condition will lead to a significant reduction of energy consumption and costs. Appropriate instrumentation was used to carry out the measurements and methodology applied was based on regulations from INMETRO (CONPET program for energy conversion efficiency in cook top and kilns), ABNT (Brazilian Technical Standards Normative) and ANP—National Agency of Petroleum, Natural Gas (NG) and Biofuels. The results allow subsidizing recommendations to minimum energy performance standards (MEPS) for residential use, providing also higher energy conversion efficiency and/or lower fuel consumption. Main conclusions are: (i) Smaller aspect ratios result in the same heating capacity and higher efficiency; (ii) higher aspect ratios (original burners) are fuel consuming and inefficient; (iii) operating conditions set on intermediate are lower fuel consumption without significant differences in temperature increases; (iv) Reynolds number lower than 500 provides higher efficiencies.

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