The concepts and features of the models of venture investment of energy-oriented startups

2019 ◽  
pp. 74-78
Author(s):  
Oleh Pankiv
Keyword(s):  
Power Plants ◽  
Public Procurement ◽  
Financial Resources ◽  
Managerial Decisions ◽  
Potential Formation ◽  
The Difference ◽  
Alternative Sources ◽  
Methodological Principles ◽  
Profile Characteristics ◽  
Start Ups

The theoretical and methodological principles of promising managerial decisions concerning the efficiency of attracting financial resources, as well as creation of fundamentally new sources of funding for the development of energy-oriented start-ups are considered. The role and place of the sectors of innovative energy saving and alternative sources of power supply in a complex system of energy independence of the country are determined. The way and the main directions of research and development of the ways to solve the aforementioned problem are outlined. As part of the search for optimization solutions, it is suggested to use the principles of the existing statistical and mathematical apparatus, marketing achievements and achievements in network development that take place in gaming business. An analogue comparison of the principal models was carried out, during which the existing types of energy-oriented start-ups were determined and presented. A separate direction in the economic search is proposed, and its profile characteristics are outlined. The type of model is typical for Ukrainian conditions. The author proposed a method of comparing strategies for attracting financial resources into a gaming business in the core of the research. To solve the investigated problem, it is proposed to apply the property of the law of the emergence. The analysis is based on a concrete example of the functioning of the tender procedure, namely the organization of public procurement. The purpose of the article is to consider and analyze the author's proposal to focus on such an important phenomenon as the constant creation of the difference between the expected price and the final contractual price. The model of the solution is based on the systematic combination of this phenomenon and the administrative stimulation of implementation of exclusively energy-innovation projects. The combination of these two points is the basis of an optimization policy for the potential formation and maintenance of a state program to search and stimulate the sources of funding for power plants.

scholarly journals Analisis stabilitas tegangan pengisian baterai terhadap putaran kincir angin pada pembangkit listrik tenaga angin

JURNAL ELTEK ◽  
2020 ◽  
Vol 18 (1) ◽  
pp. 57
Author(s):  
Mira Esculenta Martawati
Keyword(s):  
Wind Power ◽  
Output Power ◽  
Pitch Angle ◽  
Alternative Energy ◽  
Power Plants ◽  
P Value ◽  
Wind Power Plants ◽  
The Difference ◽  
Market Needs ◽  
Turbine Speed

Pembangkit energi alternatif Saat ini semakin meningkat dikarenakan  berkaitan dengan semakin banyaknya kebutuhan pasar akan energi. Ada beberapa pembangkit energi alternatif yang sudah mulai dibangun antara lain pembangkit listrik tenaga angin. Pada umumnya pembangkit listrik tenaga angin didirikan di daerah pesisir pantai atau di daerah yang  miliki yang menghasilkan banyak angin. Dalam membangun pembangkit listrik tenaga angin dibutuhkan banyak perhitungan yang matang supaya didapatkan desain  yang sesederhana mungkin dengan biaya yang seminim mungkin akan tetapi dapat menghasilkan daya yang maksimal, sehingga dapat mengurangi pemborosan energi dan dapat memanfaatkan tenaga angin yang tersedia pada alam sekitarnya semaksimal mungkin dan dapat dimanfaatkan oleh masyarakat sekitar. Pembuatan simulasi turbin angin dapat dilakukan dengan menggunakan simulasi simulink pada matlab. Hasil dari simulasi dan analisa data adalah terdapat perbedaan  pengaruh antara variasi pitch angle dan kecepatan turbin terhadap daya keluaran dan nilai tegangan , karena nilai  p-value < 0,05 dan membuktikan bahwa H0 dinyatakan ditolak. Hasil dari penelitian ini menunjukkan bahwa semakin besar pitch angle maka kecepatan turbin terhadap daya keluaran dan tegangan yang dihasilkan juga akan semakin besar   Alternative energy generation is increasing as it relates to the growing number of energy market needs. There are several alternative energy plants that have begun to be built, such as wind power plants. In general, wind power plants are established in coastal areas or in areas that have produced a lot of wind. In building wind power plants needed a lot of mature calculations so that the design is as simple as possible with a minimal cost possible but can produce maximum power, so as to reduce energy waste and can utilize the wind power available in the surrounding nature as much as possible and can be utilized by the surrounding community. The manufacture of simulation of wind turbine can be done using simulink simulation in MATLAB. The result of the simulation and data analysis is the difference in influence between the variation of pitch angle and the speed of the turbine to the output power and the voltage value, due to the P-value value of < 0.05 and proving that the H0 declared rejected. The result of this study shows that the greater the pitch angle then the turbine speed to the output power and the resulting voltage will also be greater

scholarly journals A Review of Virtual Inertia Techniques for Renewable Energy-Based Generators

2020 ◽  
Author(s):  
Ana Fernández-Guillamón ◽  
Emilio Gómez-Lázaro ◽  
Eduard Muljadi ◽  
Ángel Molina-Garcia
Keyword(s):  
Renewable Energy ◽  
Power Systems ◽  
Power System ◽  
Power Plants ◽  
Control Strategies ◽  
Renewable Energy Sources ◽  
Extensive Discussion ◽  
Renewable Sources ◽  
Virtual Inertia ◽  
Alternative Sources

Over recent decades, the penetration of renewable energy sources (RES), especially photovoltaic and wind power plants, has been promoted in most countries. However, as these both alternative sources have power electronics at the grid interface (inverters), they are electrically decoupled from the grid. Subsequently, stability and reliability of power systems are compromised. Inertia in power systems has been traditionally determined by considering all the rotating masses directly connected to the grid. Thus, as the penetration of renewable units increases, the inertia of the power system decreases due to the reduction of directly connected rotating machines. As a consequence, power systems require a new set of strategies to include these renewable sources. In fact, ‘hidden inertia,’ ‘synthetic inertia’ and ‘virtual inertia’ are terms currently used to represent an artificial inertia created by inverter control strategies of such renewable sources. This chapter reviews the inertia concept and proposes a method to estimate the rotational inertia in different parts of the world. In addition, an extensive discussion on wind and photovoltaic power plants and their contribution to inertia and power system stability is presented.

scholarly journals The Role Of Reputation In Market Entry: Evidence From French Public Procurement

2016 ◽  
Vol 32 (3) ◽  
pp. 805-814 ◽  
Author(s):  
Maher Kachour ◽  
Olivier Mamavi ◽  
Haithem Nagati
Keyword(s):  
Market Entry ◽  
Public Procurement ◽  
The European Union ◽  
Past Performance ◽  
Public Markets ◽  
Free Competition ◽  
French Firm ◽  
The Difference ◽  
The Impact

This article studies the impact of reputation on market entry in public procurement. Based on the observation of a French firm with a strong reputation, we demonstrate a significant effect of the difference in public contracts won between date t-1 and date t. Our model provides empirical proof that selection of a supplier with a strong reputation does not hinder entry in public procurement nor does it prevent free competition. This result thus questions the justification for the European Union regulation that limits the use of information on past performance to select suppliers in public markets. The findings also suggest that reputation mechanisms can help reduce uncertainty during contract execution. 

scholarly journals Finite Element Study of the Effect of Internal Cracks on Surface Profile Change due to Low Loading of Turbine Blade

2020 ◽  
Vol 10 (14) ◽  
pp. 4883
Author(s):  
Junji Sakamoto ◽  
Naoya Tada ◽  
Takeshi Uemori ◽  
Hayato Kuniyasu
Keyword(s):  
Finite Element ◽  
Surface Properties ◽  
Strain Distribution ◽  
Power Plants ◽  
Thermal Power ◽  
Turbine Blades ◽  
Surface Profile ◽  
Height Distribution ◽  
Small Load ◽  
The Difference

Turbine blades for thermal power plants are exposed to severe environments, making it necessary to ensure safety against damage, such as crack formation. A previous method detected internal cracks by applying a small load to a target member. Changes in the surface properties of the material were detected before and after the load using a digital holographic microscope and a digital height correlation method. In this study, this technique was applied in combination with finite element analysis using a 2D and 3D model simulating the turbine blades. Analysis clarified that the change in the surface properties under a small load varied according to the presence or absence of a crack, and elucidated the strain distribution that caused the difference in the change. In addition, analyses of the 2D model considering the material anisotropy and thermal barrier coating were conducted. The difference in the change in the surface properties and strain distribution according to the presence or absence of cracks was elucidated. The difference in the change in the top surface height distribution of the materials with and without a crack was directly proportional to the crack length. As the value was large with respect to the vertical resolution of 0.2 nm of the digital holographic microscope, the change could be detected by the microscope.

Out of sight, out of mind? Supplier spatial proximity in French public procurement

2014 ◽  
Vol 27 (6) ◽  
pp. 486-500 ◽  
Author(s):  
Olivier Mamavi ◽  
Haithem Nagati ◽  
Frederick T. Wehrle ◽  
Gilles Pache
Keyword(s):  
Public Procurement ◽  
Spatial Proximity ◽  
Management Competencies ◽  
Content Type ◽  
The Public ◽  
Feature Evaluation ◽  
Negative Effect ◽  
New Type ◽  
The Difference ◽  
The Impact

Purpose – The purpose of this paper is to study the impact of spatial proximity on supplier selection in the French public sector. While French public procurement legislation forbids consideration of supplier location in the procurement process, public contractors may still rely on spatial proximity for complex transactions necessitating mutual adjustments with suppliers. Design/methodology/approach – Using French Official Journals (BOAMP), the authors compiled 565,557 transactions completed on three public procurement markets between 6,182 contractors and 26,570 suppliers, over a period of six years (between 2006 and 2011). The authors conducted a two-level hierarchical linear auto-regression analysis and a feature evaluation analysis for all transactions. Findings – The paper finds significant variation between the transactions on different markets: a negative effect of spatial proximity on the number of contract notices in the public market and a positive effect of spatial proximity on the number of notices in the services and supplies markets. The difference lies in the levels of mutual adjustment required to optimally manage the relationship between public contractor and supplier. Research limitations/implications – The research is based on an econometric analysis conducted uniquely in the French context, which calls into question the external validity of the results obtained. The study also rests on segmentation into three aggregate markets, which might be considered too general. Originality/value – Rather than analyze public contractors’ perceptions of the importance of the criterion of spatial proximity, the paper examines 565,557 actual transactions. The results point to the emergence of a new type of relationship with certain suppliers, which should lead public contractors to integrate relationship management competencies, in addition to legal and economic competencies, in the organization of calls for tenders.

scholarly journals FUNDING FROM THE CROWD: AN INTERNET-BASED CROWDFUNDING PLATFORM TO SUPPORT BUSINESS SET-UPS FROM UNIVERSITIES

2013 ◽  
Vol 22 (03) ◽  
pp. 1340007 ◽  
Author(s):  
ENRICO WIECK ◽  
ULRICH BRETSCHNEIDER ◽  
JAN MARCO LEIMEISTER
Keyword(s):  
Investment Decisions ◽  
Financial Resources ◽  
Research Setting ◽  
Research Project ◽  
First Results ◽  
Funding Programs ◽  
Idea Evaluation ◽  
The One ◽  
The University ◽  
Start Ups

This research-in-progress paper presents a research project that aims at developing, piloting and evaluating a crowdfunding platform to support financing for start-ups emerging from university. Currently, universities' own financial resources to support setting up businesses from universities are limited. Universities' business foundation consultancy can often only intermediate between entrepreneurs on the one side and restricted funding programs or few investors on the other side. A crowdfunding platform enables many individuals of the (university) crowd to support promising business ideas with little investments cumulating to a greater sum in total. Thus, it has the potential to extend universities' opportunities to support entrepreneurs. In addition, tasks like idea communication, idea evaluation and investment decisions can be outsourced to the crowd. The idea, research setting, first results and a future outlook of this research project are discussed in this paper.

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