Harvesting Electric Energy from Waste Vibrations of an Electric Motor Using the Piezoelectric Principle

Stand-alone applications of Photovoltaic (PV) can be found in water pumping systems for rural area. The proper electric motor must be chosen for optimal considerations. One of the modern electric motor called brushless motor (BLDC) can be an alternative for this application although it has complexity in control. Powering such a motor by using electric energy generating by PV modules will be an interesting problem. In this paper, a PV powered BLDC motor system is proposed. The PV modules must produce maximum power at any instant time and then this power must be able to rotate the motor. By combining sequential stator energizing due to a rotor detection and a PWM concept, the speed of BLDC can be controlled. Meanwhile, to get maximum power of PV modules, detection of voltage and current of the modules are required to be calculated. Digital Signal Control (DSC) is implemented to handle this control strategy and locks the width of the PWM signal to maintain the PV modules under maximum power operation. The effectiveness of the proposed system has been verified by simulation works. Finally the experimental works were done to validate.

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Smart Refrigerators in Return for Energy Efficiency

Refrigeration Engineering and Technology ◽

10.15673/ret.v54i1.994 ◽

2018 ◽

Vol 54 (1) ◽

Author(s):

Yurii Baidak ◽

Iryna Vereitina

Keyword(s):

Energy Efficiency ◽

Electric Motor ◽

Power Efficiency ◽

Electric Energy ◽

Smart System ◽

Domestic Refrigerator ◽

Smart Systems ◽

Testing Tools ◽

Global Trend ◽

Hermetic Compressor

One of the aspects of the global trend in the development of Smart systems is considered in the paper, namely those solutions of the leading manufacturers of electrical household appliances that relate to the implementation of additional intelligent functions to devices in demand by the society - Smart Diagnosis, Smart Grid-ready, Smart Manager, Smart Access, Smart Adapt. It is emphasized that some tasks related to the energy efficiency of devices, the accuracy of testing tools, which should be used as a basis for the Smart System, remained unresolved. So, the built-in additional sensors and chips of "smart" subsystems require the application of additional measures aimed at reducing the power consumption of the device (preferably twice to restore the balance). On the example of the developed innovative electric motor of domestic refrigerator hermetic compressor drive, the existence of the possibilities for a significant increase in its efficiency has been proved. Since intellectual features of Smart System in its Smart Diagnosis dialog box should be based on monitoring data on power efficiency parameters of the device, a new concept for the development of an electric energy counter is proposed.

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A hybridization design of an air motor and an electric motor based on field programmable gate array controller

Proceedings of the Institution of Mechanical Engineers Part C Journal of Mechanical Engineering Science ◽

10.1177/0954406211428398 ◽

2011 ◽

Vol 226 (7) ◽

pp. 1778-1786 ◽

Cited By ~ 1

Author(s):

Shih-Yao Huang ◽

Yean-Ren Hwang

Keyword(s):

Electric Motor ◽

Field Programmable Gate Array ◽

Electric Energy ◽

Battery Life ◽

Output Current ◽

Proportional Integral ◽

Air Motor ◽

Speed Controller ◽

Field Programmable ◽

Gate Array

Among the elements of developing electric vehicles, the battery is usually the weakest point, as well as the most expensive component. If the battery life is too short, the frequently replacement of the battery is necessary, which will increase the overall cost. This article presents a novel hybridization design and implementation of an air motor and an electric motor which utilizes magnetic powder brake to integrate these two motors together. In this research, by the use of batteries, operation in the large discharge region can be avoided and more electric energy can be saved using an air motor as the auxiliary power. The testing results obtained using the proposed experimental platform indicate that the output current of the battery is 126 A with no air motor-assisted power, and the output current is 64 A when the pre-set switching point is 1400 r/m. These results clearly show that the current reduction is about 49%, and thus the service life of the batteries can be greatly increased. Furthermore, a prototype is built with a proportional–integral speed controller based on a field programmable gate array in order to facilitate the entire analysis of the velocity switch experiment. Through the modular methodology of field programmable gate array, the electric motor can successfully operate at the desired velocity with the proportional–integral speed controller.

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Design and Analysis of an Air/Electric Hybrid System

Volume 4: 18th Design for Manufacturing and the Life Cycle Conference; 2013 ASME/IEEE International Conference on Mechatronic and Embedded Systems and Applications ◽

10.1115/detc2013-12118 ◽

2013 ◽

Author(s):

Yean-Ren Hwang ◽

Shih-Yao Huang

Keyword(s):

Service Life ◽

Power System ◽

Electric Motor ◽

Electric Energy ◽

Electric Power System ◽

Driving Cycle ◽

Air Motor ◽

Hybrid Power ◽

Speed Controller ◽

Motor Mode

This paper proposes a hybridization design and analysis of an air/electric power system in order to extend the service life of the batteries. During the analysis process, the dynamic model of air motor, electric motor and hybrid power mode will be constructed and used in the FPGA speed controller design. By the modular methodology of FPGA, the hybrid power system can successfully operate under ECE-40 driving cycle with PI speed controller. The testing results indicate that the total air consumption is about 256 liters under air motor mode and the electric energy consumption is about 530 coulombs under DC servo motor mode. However, in a hybrid mode, the current reduction of the battery is about 18.5%, and then the service life of the battery can be improved. In addition, the experimental data shows that the chattering ranges of the air motor and the electric motor are within ±1 km/h and ±0.2 km/h respectively under ECE-40 driving cycle testing.

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Planning, Evaluation and Comparison of Electric Drive Systems Using Various Configurations to Increase Energy Efficiency and Optimize Alternating Current Drive Systems

Volume 6B: Energy ◽

10.1115/imece2015-51689 ◽

2015 ◽

Author(s):

Tallal Javied ◽

Jochen Menk ◽

Joerg Franke

Keyword(s):

Electric Motor ◽

Electric Energy ◽

Alternating Current ◽

Industrial Sector ◽

Current Drive ◽

Potential Cost ◽

Motor Systems ◽

Great Cost ◽

Holistic View ◽

Drive Systems

The industrial sector is the largest consumer of produced electric energy worldwide. Electric motor systems account for about 70 percent of the total industrial electricity demand and possess a great cost and energy saving potential. The paper provides an overview of global and regional efforts to create awareness for potential cost drivers in the industry. Various software and excel-based tools for a preliminary estimation of the energy consumption of electric motor systems are available in the market, but a holistic approach is missing. Therefore a framework and a systematic process for the estimation of potential energy savings in motor systems running on alternating current are illustrated in this paper. Moreover a new software tool is discussed, that allows a holistic view on all motor systems within a company without cost-intensive measurements or the use of external consultants.

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Sustainable 2,5-furandicarboxylic synthesis by a direct 5-hydroxymethylfurfural fuel cell based on a bifunctional PtNiSx catalyst

Chemical Communications ◽

10.1039/d0cc06087a ◽

2020 ◽

Vol 56 (88) ◽

pp. 13611-13614

Author(s):

Jialu Wang ◽

Xian Zhang ◽

Guozhong Wang ◽

Yunxia Zhang ◽

Haimin Zhang

Keyword(s):

Fuel Cell ◽

Electric Energy ◽

Value Added ◽

Chemical Energy ◽

New Type

A new type of direct 5-hydroxymethylfurfural (HMF) oxidation fuel cell based on a bifunctional PtNiSx/CB catalyst not only transformed chemical energy into electric energy but also converted HMF into value-added 2,5-furandicarboxylic (FDCA).

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