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This work presents a crude bioethanol fueled integrated power system for backup and off-grid applications. The system is based on ethanol steam reformation to hydrogen that is used in polymer electrolyte fuel cells to produce electricity. We introduce the system design and overall system specifications, and report the experimental process of defining specifications for the produced hydrogen quality, a key variable affecting the final system cost, efficiency and durability. Results from development of individual subsystems are also presented together with discussion on the complete system integration.

This work presents a crude bioethanol fueled integrated power system for backup and off-grid applications. The system is based on ethanol steam reformation to hydrogen that is used in polymer electrolyte fuel cells to produce electricity. We introduce the system design and overall system specifications, and report the experimental process of defining specifications for the produced hydrogen quality, a key variable affecting the final system cost, efficiency and durability. Results from development of individual subsystems are also presented together with discussion on the complete system integration.

This paper discusses the applicability of the two- port network model for the analysis of wireless power transfer (WPT) systems. The two-port network model has been extensively used to analyze microwave circuits, and identical principles have been applied to WPT. The standard gain parameters defined for the two-port networks are critically analyzed with regards to WPT systems. The usefulness and the practical limitations of the gain parameters are highlighted. In addition to power transfer efficiency (PTE), an alternative gain parameter, square voltage gain is defined to estimate the power transfer capability of the WPT system. The proposed performance indices are then computed in terms of generalized two-port network parameters along with a generalized optimization methodology. A case study is presented for the optimization of a WPT system with a repeater.

This paper discusses the applicability of the two- port network model for the analysis of wireless power transfer (WPT) systems. The two-port network model has been extensively used to analyze microwave circuits, and identical principles have been applied to WPT. The standard gain parameters defined for the two-port networks are critically analyzed with regards to WPT systems. The usefulness and the practical limitations of the gain parameters are highlighted. In addition to power transfer efficiency (PTE), an alternative gain parameter, square voltage gain is defined to estimate the power transfer capability of the WPT system. The proposed performance indices are then computed in terms of generalized two-port network parameters along with a generalized optimization methodology. A case study is presented for the optimization of a WPT system with a repeater.

The shift towards a sustainability-driven society includes changes to the educational system, business operations, innovation and entrepreneurial ecosystems as well as policymaking. Moreover, such a shift demands particularly a combination of top-down policy-making initiatives and bottom-up social entrepreneur-driven changes. Social innovation and entrepreneurship are providing solutions for globally recognized social and sustainability challenges such as poverty, education, environmental and climate change, peace support – worldwide yet also in the particularly challenging context of developing economies. We aim to showcase the best practices of social and sustainability-oriented innovation and entrepreneurship in the context of developing economies. In particular, we address the question of how social entrepreneur and innovator with bottom-up ideas could complement the top-down policymaking initiatives. Our design implies qualitative research aiming to disseminate the inspiring story of a social innovative enterprise, which represents a successful example of complementing policy-making efforts. Accordingly, our findings contribute to the literature on social innovation and entrepreneurship in the context of developing economies and simultaneously informs social entrepreneurs and policymakers on potential opportunities for synergy in their efforts. Peer reviewed

The shift towards a sustainability-driven society includes changes to the educational system, business operations, innovation and entrepreneurial ecosystems as well as policymaking. Moreover, such a shift demands particularly a combination of top-down policy-making initiatives and bottom-up social entrepreneur-driven changes. Social innovation and entrepreneurship are providing solutions for globally recognized social and sustainability challenges such as poverty, education, environmental and climate change, peace support – worldwide yet also in the particularly challenging context of developing economies. We aim to showcase the best practices of social and sustainability-oriented innovation and entrepreneurship in the context of developing economies. In particular, we address the question of how social entrepreneur and innovator with bottom-up ideas could complement the top-down policymaking initiatives. Our design implies qualitative research aiming to disseminate the inspiring story of a social innovative enterprise, which represents a successful example of complementing policy-making efforts. Accordingly, our findings contribute to the literature on social innovation and entrepreneurship in the context of developing economies and simultaneously informs social entrepreneurs and policymakers on potential opportunities for synergy in their efforts. Peer reviewed

During 2010-2013, Baltic Countries (Estonia, Latvia, Lithuania), deregulated their power markets and joined the Nord-Pool market. Today, major share of electricity in Baltic countries is produced from fossil fuels. Over the past years, the increasing penetration of renewable energy systems intensified in order to meet the European targets. In particular, installing wind power dramatically rises as a result of a great potential in Northern Europe. This paper attempts to provide an overview of the possible impacts of growing wind power on market power potential in Baltic countries’ electricity market. The Herfindahl-Hirschman Index (HHI), which is a common measure of market concentration, is chosen to conduct this exploratory study. HHI index trend in Baltic over the years is evaluated and compared with the rise of wind power. The results show how Baltic area is a highly concentrated marketplace, but wind power is partly changing this.