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

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.

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.

scholarly journals Thermally self-sustaining tubular SOFC power generator with no moving parts

2019 ◽  
Vol 1407 ◽  
pp. 012007 ◽  
Author(s):  
J Wongwiwat ◽  
P Bhuripanyo ◽  
T S Welles ◽  
V P DeBiase ◽  
J Ahn ◽  
...  
Keyword(s):  
Power Generator ◽  
Moving Parts

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

Synchrophasor-Assisted Prediction of Stability/Instability of a Power System

2013 ◽  
Vol 14 (1) ◽  
pp. 1-8 ◽  
Author(s):  
Biman Kumar Saha Roy ◽  
Avinash Kumar Sinha ◽  
Ashok Kumar Pradhan
Keyword(s):  
Power System ◽  
New England ◽  
Electrical Power ◽  
Threshold Value ◽  
System Stability ◽  
Power Generator ◽  
Measurement Units ◽  
System Information ◽  
Bus Voltage

Abstract This paper presents a technique for real-time prediction of stability/instability of a power system based on synchrophasor measurements obtained from phasor measurement units (PMUs) at generator buses. For stability assessment the technique makes use of system severity indices developed using bus voltage magnitude obtained from PMUs and generator electrical power. Generator power is computed using system information and PMU information like voltage and current phasors obtained from PMU. System stability/instability is predicted when the indices exceeds a threshold value. A case study is carried out on New England 10-generator, 39-bus system to validate the performance of the technique.

Analytic Modeling and Experimental Verification of Thin-Film Piezoelectric Vibration-Induced Micro Power Generator

2004 ◽  
Author(s):  
Shi-Lun Chen ◽  
Gou-Jen Wang ◽  
Wen-Chin Yu
Keyword(s):  
Mechanical Strain ◽  
Electrical Power ◽  
Excitation Frequency ◽  
Damping Factor ◽  
Maximum Output ◽  
Analytic Model ◽  
Induced Voltage ◽  
Power Generator ◽  
Micro Power ◽  
Micro Power Generator

In this article, a novel electromechanical energy conversion model of a piezoelectric cantilever bimorphs micro transducer is proposed. In this new piezoelectric-base power generator modeling, the coupling relationship between the mechanical strain and the piezoelectric polarization, rather than the curvature basis approach, is adopted to deduce the vibration-induced voltage and electrical power. In addition to the working equation for piezoelectric sensors, the damping effect is included to enable the resonance frequency, the maximum induced voltage at the resonance, the conversion power, and the dimensions of the piezoelectric micro power generator to be analytic estimated. The analytic model shows that the vibration-induced voltage is proportional to the excitation frequency and the width of the device but is inverse proportional to the length of cantilever beam and the damping factor. To verify the theoretical analysis, two clusters of micro transducers are fabricated. Experimental results demonstrate that the maximum output voltages and the power conversion are only little derivations from the analytic model.

Sign in / Sign up

Export Citation Format

Share Document