A Fundamental Study on Feasibility of The Noise on Express Highway As Electrical Power Source

2009 ◽  
Vol 23 (6) ◽  
pp. 96-103
Keyword(s):  
Electrical Power ◽  
Power Source ◽  
Fundamental Study

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.

Parametric Survey for Efficient DeNOx by Direct Decomposition of NO Using an Intermittent DBD Generated by a One-Cycle Sinusoidal Power Source

2007 ◽  
Vol 10 (2) ◽  
Author(s):  
Ken Yukimura ◽  
Hiroshi Murakami ◽  
Masayuki Itoh
Keyword(s):  
Gas Flow ◽  
Room Temperature ◽  
Barrier Discharge ◽  
Electrical Power ◽  
Power Source ◽  
Injection System ◽  
Gas Flows ◽  
Mixing Zone ◽  
Dbd Plasma ◽  
Decomposition Of No

AbstractNO gas is directly decomposed using an intermittent DBD plasma generated by a one cycle sinusoidal power source. Previously, we have developed an ammonia radical injection system, where ammonia radicals were produced by a dielectric barrier discharge (DBD) in a chamber, called a radical injector, which is separate from the chamber in which NO gas flows. The radicals are injected into the mixing zone in the NO gas flow field to decompose NO gas. The power source for generating the DBD is a one-cycle sinusoidal (OCS) waveform so as to easily control the electrical power consumed in the DBD plasma. The fundamental frequency of the OCS power source is 150 kHz. In this paper, we used the same power source, but NO was decomposed directly by the plasma; that is, NO gas is in the DBD plasma. NO gas was varied from room temperature to approximately 400 C, where the effect of DeNOx characteristics were discussed. By optimizing parameters for DeNOx, an energy efficiency of 100 g/kWh was obtained.

scholarly journals Class D Power Amplifier Used In Programmable Ac Power Source Ideal To Analyse Electronic Equipment Performance In The Electrical Power System Quality

2009 ◽  
Vol 14 (1) ◽  
pp. 9-16
Author(s):  
Fábio Vincenzi Romualdo da Silva ◽  
João Batista Vieira Júnior ◽  
Ernane Antônio Alves Coelho ◽  
Valdeir José Farias ◽  
Luiz Carlos de Freitas
Keyword(s):  
Power System ◽  
Power Amplifier ◽  
Electrical Power ◽  
Power Source ◽  
Electronic Equipment ◽  
System Quality ◽  
Electrical Power System ◽  
Class D ◽  
Ac Power ◽  
Equipment Performance

scholarly journals A simplified PWM technique for PV fed Five-Level Five switch Multilevel Inverter

2018 ◽  
Vol 7 (4.24) ◽  
pp. 4
Author(s):  
Ali Qasim Hussein Algburi ◽  
P. V. Ramana Rao
Keyword(s):  
Power Generation ◽  
Alternative Energy ◽  
Fossil Fuels ◽  
Pulse Width Modulation ◽  
Electrical Power ◽  
Power Source ◽  
Pv System ◽  
Alternative Energy Sources ◽  
Voltage Stress ◽  
Multi Level

Bulk electrical power generation is generated using fossil fuels which emit huge pollution which is a global constraint today. Non-conventional sources of energy are the alternative energy sources for power generation. Non-conventional sources like PV (photo-voltaic) system are used as power source now-a-days. Multi-level inverters (MLI) are dominating inverter circuits giving out voltage with less distortion eventually reducing voltage stress on switches and size of filter. This paper presents a MLI structure with five switches giving out five-level output from the inverter. PV system is used as source and boost converter amplifies the PV output voltage to desired value. The paper presents a simplified PWM (pulse width modulation) technique for PV fed five switch five-level inverter. The proposed system is developed and results are obtained using MATLAB/SIMULINK software. Results are presented for the system considering R-load and RL-load conditions.

scholarly journals A Genetic Algorithm Basrd Problem Detection for Unit Commitment (UC) Problems

2019 ◽  
Vol 8 (2S3) ◽  
pp. 91-96
Keyword(s):  
Genetic Algorithm ◽  
Unit Commitment ◽  
Electrical Power ◽  
Power Source ◽  
Potential Outcomes ◽  
Course Of Action ◽  
Problem Detection

This recommendation watches out for the Unit Commitment (UC) issue, which be a notable combinatorial improvement issue climbing being made masterminding of intensity structures. In the UC issue, one wishes to structure a division of a particular system of age units with notwithstanding pick their age yield during regulate toward satisfy immensity needs by any rate cost larger than a specified instance prospect. Also, the framework should assure a great deal of mechanical along with stipulate imprisonments. The monstrous scale course of action of practical resources has starting late brought centrality up in advantageous techniques for submitting locational holds to affirm the structure against potential outcomes and the shocking and exceedingly factor shortcoming of reachable power source supply, while tending to power stream goals obliged through the broadcast make. during This paper we keep in mind frameworks designed for filing locational holds: stochastic unit determination moreover a mutt reinforce of situation manual protection-obliged willpower. This paper turns giving a recognizable assessment of the trendy method utilized in improving UC problems for each stochastic and deterministic hundreds, which has been gotten from special amigo examined dispersed papers. It has been limits into diverse factors which be a part of severa desires problem to preferred function, security, flood and time. This paper, proposes a go breed genetic algorithm is proposed to cope with the Unit Commitment (UC) problem. It need to be reminded that in the UC problem, one needs to layout a subset of a given get-cosllectively of electrical power age devices and other than

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