High-density energy conversion using compact magnetohydrodynamic electrical power generator

2007 ◽  
Vol 91 (16) ◽  
pp. 161506 ◽  
Author(s):  
Tomoyuki Murakami ◽  
Yoshihiro Okuno
Keyword(s):  
Energy Conversion ◽  
Electrical Power ◽  
High Density ◽  
Power Generator

Hydrocarbon-Fueled Electrical Power Generator with no Moving Parts

2019 ◽  
Author(s):  
Jakrapop Wongwiwat ◽  
Patharapong Bhuripanyo ◽  
Paul Ronney
Keyword(s):  
Electrical Power ◽  
Power Generator ◽  
Moving Parts

Maximizing power generation from ambient stray magnetic fields around smart infrastructures enabling self-powered wireless devices

2020 ◽  
Vol 13 (5) ◽  
pp. 1462-1472 ◽  
Author(s):  
Hyeon Lee ◽  
Rammohan Sriramdas ◽  
Prashant Kumar ◽  
Mohan Sanghadasa ◽  
Min Gyu Kang ◽  
...  
Keyword(s):  
Power Generation ◽  
Magnetic Fields ◽  
Energy Conversion ◽  
Electrical Power ◽  
Electric Energy ◽  
Wireless Devices ◽  
Self Powered

A magnetoelectric coupled magneto-mechano-electric energy conversion mechanism allows the generation of high electrical power from ambient stray magnetic fields around infrastructures.

scholarly journals Simulation Models of Skidder Conventional and Hybrid Drive

Forests ◽  
2020 ◽  
Vol 11 (9) ◽  
pp. 921
Author(s):  
Juraj Karlušić ◽  
Mihael Cipek ◽  
Danijel Pavković ◽  
Juraj Benić ◽  
Željko Šitum ◽  
...  
Keyword(s):  
Storage System ◽  
Electrical Power ◽  
Simulation Models ◽  
Energy Storage System ◽  
Management Control ◽  
Operating Conditions ◽  
Hybrid Drive ◽  
Power Generator ◽  
Working Cycle ◽  
Battery Energy

The paper presents a hypothetical conversion of a conventional cable skidder powertrain to its hybrid version. Simulations of skidder operation were made for two existing forest paths, based on the technical characteristics of the engine, transmission system and the characteristics of the winch. Fuel and time consumption were calculated per working cycle considering the operating conditions (slope, load mass). The model was then converted to a hybrid version by adding a battery energy storage system in parallel with the electrical power generator and by employing an energy management control strategy. The dimensions of the battery and the power generator were chosen based on the characteristics of the existing winch with the aim of completely taking over its operation. The management strategy was selected using the specific fuel consumption map. All simulations were repeated for the hybrid drive under the same operating conditions. The results show that fuel savings of around 13% can be achieved with the selected hybrid drive and steering strategy.

Design and Fabrication of a High Efficiency Piezoelectric Vibration-Induced Micro Power Generator

2003 ◽  
Author(s):  
Gou-Jen Wang ◽  
Ying-Hsu Lin ◽  
His-Harng Yang ◽  
Cheng-Tang Pan
Keyword(s):  
Theoretical Analysis ◽  
Energy Conversion ◽  
Experimental Results ◽  
Maximum Output ◽  
Vibration Source ◽  
Power Generator ◽  
Resonance Frequencies ◽  
Micro Power ◽  
Piezoelectric Vibration ◽  
Micro Power Generator

To fulfill the increasing self-power demanding of the embedded and remote microsystems, theoretical and experimental study of a piezoelectric vibration-induced micro power generator that can convert mechanical vibration energy into electrical energy is presented. A complete energy conversion model regarding the piezoelectric transducer is discussed first. To verify the theoretical analysis, two clusters of transducer structures are fabricated. The piezoelectric lead zirconate titanate (PZT) material that has better energy conversion efficiency among the piezoelectric materials is chosen to make of the energy conversion transducer. The desired shape of the piezoelectric generator with its resonance frequency in accordance with the ambient vibration source is designed by finite element analysis (FEA) approach. Conducting wires and load resistor are soldered on the electrodes to output and measure the vibration induced electrical power. Experimental results shows that the maximum output voltages are generated at the first mode resonance frequencies of the structure. It is also found from the experimental results that the induced voltage is irrelevant to the width of the structure but is inverse proportion to the length of the structure. It takes 7 minutes to charge a 10,000 μF capacitors array to a 7 V level. The total amount of electricity and energy stored in the capacitors are 0.7 Coulomb and 0.245 J, respectively. The experimental results are coincidence with the theoretical analysis.

Fundamental Study on Friction-Driven Gyroscopic Power Generator Works Under Arbitrary Vibration

2019 ◽  
Author(s):  
Aya Watanabe ◽  
Ryousuke Yuyama ◽  
Hiroshi Hosaka ◽  
Akira Yamashita
Keyword(s):  
Power Generation ◽  
High Speed ◽  
Electrical Power ◽  
Low Frequency ◽  
Inertial Force ◽  
Fundamental Study ◽  
Power Generator ◽  
Energy Harvesters ◽  
Low Frequency Vibration ◽  
Circular Track

Abstract This paper describes a friction-driven gyro generator that works under arbitrary vibrations and generates more than 1 W of power. Vibrational generators are energy harvesters that convert environmental vibrations into electrical power via the inertial force of pendulums. In conventional generators that use simple vibration, the power is less than 10 mW for a wearable size because vibrations in the natural environment are as low as 1 Hz. Gyroscopic generators increase the inertial force by rotating a pendulum at high speed and creating a gyro effect. In this generator, a palm-size product that generates 0.1 W and weighs 280 g has already been commercialized, but this device operates only under a particular vibration that synchronizes rotor precession and stalls under random vibration. To solve this problem, in this research, two gimbals and a precession spring are introduced to support the rotor. We developed a prototype generator with straight tracks measuring 16 cm × 11 cm × 12 cm with a mass of 980 g. Under a vibration of 4 Hz and ±20 degrees, power generation of 1.6 W was confirmed. Next, a prototype circular track was made. Power generation of 0.2 W with a vibration of 1 Hz and ±90 degrees was confirmed. Finally, a simple formula to estimate the upper limit of the generation power is derived. It is suggested that the circular-type generator is suitable for low-frequency vibration and can generate twice the power of a straight-type generator.

Numerical study of plasma-fluid behavior and generation characteristics of the closed-loop MHD electrical power generator

2010 ◽  
Vol 174 (4) ◽  
pp. 37-44 ◽  
Author(s):  
Jun Ohno ◽  
Alessandro Liberati ◽  
Tomoyuki Murakami ◽  
Yoshihiro Okuno
Keyword(s):  
Closed Loop ◽  
Numerical Study ◽  
Electrical Power ◽  
Power Generator ◽  
Fluid Behavior

Highly efficient functional GexPb1−xTe based thermoelectric alloys

2014 ◽  
Vol 16 (37) ◽  
pp. 20120-20126 ◽  
Author(s):  
Yaniv Gelbstein ◽  
Joseph Davidow
Keyword(s):  
Energy Conversion ◽  
Fuel Consumption ◽  
Conversion Efficiency ◽  
Thermoelectric Materials ◽  
Waste Heat ◽  
Electrical Power ◽  
Electrical Energy ◽  
Energy Conversion Efficiency ◽  
Efficient Implementation ◽  
Thermoelectric Devices

Methods for enhancement of the direct thermal to electrical energy conversion efficiency, upon development of advanced thermoelectric materials, are constantly investigated mainly for an efficient implementation of thermoelectric devices in automotive vehicles, for utilizing the waste heat generated in such engines into useful electrical power and thereby reduction of the fuel consumption and CO2 emission levels.

Sign in / Sign up

Export Citation Format

Share Document