scholarly journals M-Shape PV Arrangement for Improving Solar Power Generation Efficiency

2020 ◽  
Vol 10 (2) ◽  
pp. 537
Author(s):  
Yongyi Huang ◽  
Ryuto Shigenobu ◽  
Atsushi Yona ◽  
Paras Mandal ◽  
Zengfeng Yan ◽  
...  
Keyword(s):  
Power Generation ◽  
Tilt Angle ◽  
Geographical Location ◽  
Economic Benefits ◽  
Shape Design ◽  
Generation Efficiency ◽  
Optimal Angle ◽  
Sales Revenue ◽  
Economic Analyses ◽  
Novel Design

This paper presents a novel design scheme to reshape the solar panel configuration and hence improve power generation efficiency via changing the traditional PVpanel arrangement. Compared to the standard PV arrangement, which is the S-shape, the proposed M-shape PV arrangement shows better performance advantages. The sky isotropic model was used to calculate the annual solar radiation of each azimuth and tilt angle for the six regions which have different latitudes in Asia—Thailand (Bangkok), China (Hong Kong), Japan (Naha), Korea (Jeju), China (Shenyang), and Mongolia (Darkhan). The optimal angle of the two types of design was found. It emerged that the optimal tilt angle of the M-shape tends to 0. The two types of design efficiencies were compared using Naha’s geographical location and sunshine conditions. Through economic analyses, both the photovoltaic base cost and the electricity sales revenue were calculated, and the results showed that the M-shape has better economic benefits compared to the S-shape design. The proposed method can save resources and improve economic efficiency as well.

Analysis of China’s regional wind power generation efficiency and its influencing factors

2018 ◽  
Vol 30 (2) ◽  
pp. 254-271 ◽  
Author(s):  
Xiongfeng Pan ◽  
Jing Zhang ◽  
Changyu Li ◽  
Xianyou Pan ◽  
Jinbo Song
Keyword(s):  
Power Generation ◽  
Wind Power ◽  
Influencing Factors ◽  
Geographical Location ◽  
Wind Power Generation ◽  
Data Envelopment Analysis Model ◽  
Eastern Region ◽  
Analysis Model ◽  
Generation Efficiency ◽  
Technology Gap

Based on the data of 30 Chinese provinces from 2011 to 2014, we use a meta-frontier data envelopment analysis model and a symbolic regression method to study wind power generation efficiency and its influencing factors. From our analytical results, the main findings are as follows: (1) The wind power generation efficiency of the eastern region is the highest, followed by the western region, and the wind power generation efficiency of the central region is the lowest. (2) The technology gap ratio of eastern region is at a high level and is stable. In contrast, the technology gap ratios of the central and western regions are at a low level and have a larger fluctuation range. (3) The room for improving internal management is huge in the three regions of China mainland, but the advancement of technical level only in the Central and Western is significant. (4) Geographical location has the most impact on wind power generation efficiency, followed by technical progress and carbon regulation, while wind energy reserve has the least impact on wind power generation efficiency.

scholarly journals Neoteric Fuzzy control stratagem and design of Chopper fed Multilevel Inverter for enhanced Voltage Output involving Plug-In Electric Vehicle (PEV) applications

Electronics ◽  
2019 ◽  
Vol 8 (10) ◽  
pp. 1092 ◽  
Author(s):  
Sunddararaj ◽  
Rangarajan ◽  
Gopalan
Keyword(s):  
Electric Vehicle ◽  
New Technologies ◽  
Control Strategies ◽  
Economic Benefits ◽  
Multilevel Inverter ◽  
Control Logic ◽  
Bidirectional Converters ◽  
Hybrid Controller ◽  
And Control ◽  
Novel Design

The utilization of plug-in electric vehicles (PEV) has started to garner more attention worldwide considering the environmental and economic benefits. This has led to the invention of new technologies and motifs associated with batteries, bidirectional converters and inverters for Electric Vehicle applications. In this paper, a novel design and control of chopper circuit is proposed and configured with the series and parallel connection of the power electronic based switches for two-way operation of the converter. The bidirectional action of the proposed converter makes it suitable for plug-in electric vehicle applications as the grid is becoming smarter. The DC–DC converter is further interfaced with the designed multilevel inverter (MLI). The reduced switches associated with the novel design of MLI have overcome the cons associated with the conventional inverters in terms of enhanced performance in the proposed design. Further, novel control strategies have been proposed for the DC–DC converter based on Proportional Integral (PI) and Fuzzy based control logic. For the first time, the performance of the entire system is evaluated based on the comparison of proposed PI, fuzzy, and hybrid controllers. New rules have been formulated for the Fuzzy based controllers that are associated with the Converter design. This has further facilitated the interface of bidirectional DC–DC converter with the proposed MLI for an enhanced output voltage. The results indicate that the proposed hybrid controller provides better performance in terms of voltage gain, ripple, efficiency and overall aspects of power quality that forms the crux for PEV applications. The novelty of the design and control of the overall topology has been manifested based on simulation using MATLAB/SIMULINK.

Evaluation of the Power Generation Efficiency of a Hot Spring Heat Binary Power Generation System

2016 ◽  
Vol 42 (2) ◽  
pp. 76-82
Author(s):  
Akira Saito ◽  
Yuta Sasaki ◽  
Kazuhide Kimbara ◽  
Masao Sudou
Keyword(s):  
Power Generation ◽  
Hot Spring ◽  
Generation System ◽  
Generation Efficiency ◽  
Power Generation System

scholarly journals Combining QuickSCAT wind data and Landsat ETM+ images to evaluate the offshore wind power resource of East Vietnam Sea

2020 ◽  
Vol 20 (2) ◽  
pp. 143-153
Author(s):  
Nguyen Xuan Tung ◽  
Do Huy Cuong ◽  
Bui Thi Bao Anh ◽  
Nguyen Thi Nhan ◽  
Tran Quang Son
Keyword(s):  
Power Generation ◽  
Wind Energy ◽  
Wind Power ◽  
Power Density ◽  
Geographical Location ◽  
Wind Power Generation ◽  
Offshore Wind ◽  
Wind Data ◽  
Power Capacity ◽  
Wind Power Density

Since the East Vietnam Sea has an advantageous geographical location and rich natural resources, we can develop and manage islands and reefs in this region reasonably to declare national sovereignty. Based on 1096 scenes of QuikSCAT wind data of 2006–2009, wind power density at 10 m hight is calculated to evaluate wind energy resources of the East Vietnam Sea. With a combination of wind power density at 70 m hight calculated according to the power law of wind energy profile and reef flats extracted from 35 scenes of Landsat ETM+ images, installed wind power capacity of every island or reef is estimated to evaluate wind power generation of the East Vietnam Sea. We found that the wind power density ranges from levels 4–7, so that the wind energy can be well applied to wind power generation. The wind power density takes on a gradually increasing trend in seasons. Specifically, the wind power density is lower in spring and summer, whereas it is higher in autumn and winter. Among islands and reefs in the East Vietnam Sea, the installed wind power capacity of Hoang Sa archipelago is highest in general, the installed wind power capacity of Truong Sa archipelago is at the third level. The installed wind power capacity of Discovery Reef, Bombay Reef, Tree island, Lincoln island, Woody Island of Hoang Sa archipelago and Mariveles Reef, Ladd Reef, Petley Reef, Cornwallis South Reef of Truong Sa archipelago is relatively high, and wind power generation should be developed on these islands first.

scholarly journals Optimal Ways of Unloading and Loading Operations under Arctic Conditions

2021 ◽  
Vol 9 (10) ◽  
pp. 1050
Author(s):  
Marat Eseev ◽  
Dmitry Makarov
Keyword(s):  
Mathematical Modeling ◽  
Geographical Location ◽  
Geographic Location ◽  
Economic Benefits ◽  
Transport Infrastructure ◽  
The Arctic ◽  
Cargo Delivery ◽  
Arctic Conditions ◽  
Loading And Unloading ◽  
The Right

Usually, loading and unloading of cargo ships takes place in ports that are equipped with the infrastructure necessary to carry out such operations. In the Arctic, often a helicopter is the only way to get the cargo to the right place. Finding the optimal geographic location for unloading a ship using helicopters is an important task. It is necessary to create a support system for making the right decisions in such situations. Mathematical modeling has been used to find the geographical location that ensures the most favorable and quickest delivery of cargo from a vessel to its destination, using a helicopter. A criterion has also been found in which the search for the optimum point is a more rational way of unloading the vessel compared to other discharge options. The maps of the economic benefits of loading and unloading operations in this model have been developed. Using the example of the developed model, it is shown that during the transportation of goods in Ob Bay, significant economic and temporary advantages can be obtained. The developed model can be extended to the case of cargo delivery not only in the Arctic conditions, but also where the transport infrastructure is insufficiently developed.

scholarly journals Environmental Efficiency Evaluation of China’s Power Industry Based on the Two-Stage Network Slack-Based Measure Model

2021 ◽  
Vol 18 (23) ◽  
pp. 12650
Author(s):  
Wei Wei ◽  
Shuangying Ding ◽  
Silin Zheng ◽  
Jingjing Ma ◽  
Tong Niu ◽  
...  
Keyword(s):  
Power Generation ◽  
Power Industry ◽  
Environmental Efficiency ◽  
Evaluation Index System ◽  
Efficiency Evaluation ◽  
Low Carbon ◽  
Generation Efficiency ◽  
Two Stage ◽  
Transmission And Distribution ◽  
Distribution Efficiency

How to achieve the continuous improvement of the environmental performance level of the power industry within the requirements of clean and low-carbon energy development is the fundamental requirement and inevitable choice for the construction of ecological civilization and sustainable development. From the perspective of environmental protection, based on the Data Envelopment Analysis (DEA) method and the internal mechanism of power system production and supply, the power industry environmental efficiency evaluation index system was constructed, and the two-stage Network Slack-based Measure (NSBM) model considering undesired output was used to calculate China’s 30 provinces and municipalities from 1998 to 2019. The environmental efficiency is divided into two links: power generation efficiency and transmission and distribution efficiency. The study found that, within the research interval, the overall environmental efficiency of China’s 30 provinces is low, and the differences between provinces and cities are large, but they have gradually developed in a better direction after 2015. The power generation efficiency of the first link in most provinces and municipalities is higher than the transmission and distribution efficiency of the second link, and the low transmission and distribution efficiency is an important reason for the low comprehensive level of environmental efficiency. The overall evolution trend of environmental efficiency in the six regions of China is roughly the same, but the regional differences are obvious, showing a trend of “high in the southeast and low in the northwest”. The economic and natural resource differences in different provinces and cities in each region have led to varying degrees of redundancy in five aspects, including investment in power assets, installed power generation capacity, and length of transmission lines, which seriously affect the environmental efficiency of the power industry. This research attempts to open the “black box” of the environmental efficiency conversion process of the power industry, which can provide directions and strategic suggestions for the improvement of the efficiency of the power industry in China.

scholarly journals Economic Perspectives on the Impact of Covid Vaccines

2021 ◽  
Vol 9 (2) ◽  
pp. 52-54
Author(s):  
A Sangamithra ◽  
S Thilagavathy
Keyword(s):  
Health Benefits ◽  
Well Being ◽  
Economic Benefits ◽  
Health Conditions ◽  
Governmental Organizations ◽  
Non Governmental Organizations ◽  
Private And Public ◽  
The Government ◽  
Economic Analyses ◽  
The Impact

Vaccination and the impact on health on the world’s people is very difficult to exaggerate. The main aim is to treat people with mental health issues and substance use of disorder. Vaccination is crucial in terms of ensuring the overall health conditions and well–being. The development of vaccines is an expensive and lengthy process. Depreciation is high and takes multiple candidates and long years to produce a licensed vaccine. The access to vaccines that prevent life-threatening infectious diseases remains not equal to all the population. The benefits of vaccination derive from health and economic benefits and the health benefits have diminishing returns as a result of high-risk individuals been vaccinated first. Economic benefits depend both on the health benefits and on how reduced risk of infection and death translates into a leading general economic activity. Department of Government is required to perform a systematic economic analyses of vaccines and to justify their given pressure on both private and public finances on a global level; provoke in the year 2008 financial crash. Mostly, the government supports charities and non-governmental organizations, where people invest in these, with the hope of improving the health conditions.

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