Optimal sizing of PV-BESS units for home energy management system-equipped households considering day-ahead load scheduling for demand response and self-consumption
Smart thermostats and home energy management systems (HEMSs) are generally studied separately. Ho... more Smart thermostats and home energy management systems (HEMSs) are generally studied separately. However, their joint use can provide a greater benefit. Therefore, this study primarily aims to combine a smart thermostat with a HEMS. The mixed-integer linear programming (MILP)-based HEMS performs day-ahead load scheduling for cost-minimization and provides optimal demand response (DR) and photovoltaic (PV) self-consumption, and the fuzzy logic-based thermostat aims efficient DR of airconditioning and maintenance of thermal comfort. In the first stage, unlike conventional fixed set-point thermostats, the proposed thermostat defines different setpoints for each time interval, by fuzzifying input parameters of electricity prices, solar radiation, and occupant presence, to be used by HEMS. In the second stage, the HEMS schedules the operation of time-shiftable, thermostatically controlled, and power-shiftable (battery energy storage system (BESS), electric vehicle (EV)) loads. The HEMS considers bi-directional power flow between home, BESS, EV, and grid, as well as battery degradation to avoid unnecessary energy arbitrage. The simulation results show that a daily cost reduction of 53.2 % is achieved under time-of-use (TOU) and feed-in tariff rates of Turkey. AC cost is reduced by 24 % compared to conventional thermostats. In a future scenario of real-time pricing (RTP) and dynamic feed-in tariff, vehicle-to-grid (V2G) becomes possible.
Electric vehicles and charging infrastructure in Turkey: An overview
Renewable & Sustainable Energy Reviews, Jun 1, 2021
Abstract The depletion of fossil resources, energy dependency, increase in fuel costs and environ... more Abstract The depletion of fossil resources, energy dependency, increase in fuel costs and environmental concerns caused by fossil fuel vehicles, along with the advances in battery technology and their manufacturing processes have promoted a transition towards electric vehicles (EV). Depending on inner and external factors, some countries fastly adopted the new technology, whereas others act more slowly. In this study, an overview of Turkey's position in EV technology is presented. The current EV, charging infrastructure, and battery market, as well as EV-related regulations, research and development (R&D) activities, and industry in the country are evaluated. An EV charging station (EVCS) density map of Turkey is formed to illustrate the deficiencies in the existing charging infrastructure. The challenges and opportunities in the country are discussed and presented in the form of a Strengths, Weaknesses, Opportunities, and Threats (SWOT) analysis and the study is concluded with a list of recommendations. Currently, the public in Turkey is focused on the state-supported “local brand EV” project. However, the acceptance of EVs is still low in the country. To that end, social awareness-raising activities, especially electric public transportation and electric public fleets, should be promoted for EVs to achieve their higher visibility. The EVCS infrastructure should be further expanded in the eastern part of Turkey and further steps should be taken regarding EV/EVCS-related incentives.
2017 10th International Conference on Electrical and Electronics Engineering (ELECO), 2017
Inverted pendulum systems have an important place in practice for control problems due to their n... more Inverted pendulum systems have an important place in practice for control problems due to their nonlinear structures. It is a very difficult task to control the orientation and speed of objects and robots which are free in three dimensions. These systems constitute the substructure of many advanced systems. Conventional actuators may not be used in such applications due to various limitations. Under these circumstances usage of reaction wheels come into prominence. Reaction wheel based systems are used for orienting, coordinating and balancing of spacecraft, transport systems, and other such systems. In this study, dual axis self-balancing reaction wheel based inverted pendulum system which is a basis for many complex systems has been designed, manufactured and controlled.
Arastirmanin amaci. I icmsirelik Yuksekokullarinda gorev yapan ogretim elemanlarinin uygulamali e... more Arastirmanin amaci. I icmsirelik Yuksekokullarinda gorev yapan ogretim elemanlarinin uygulamali egitimi olumlu ya olumsuz yonde etkileyebilecek bireysel nitelikleri, uygulama programinin yurutuldugu ve yapildigi kununlarin organizasyon ve isleyisleri ile ilgili degerlendirmelerini saptamaktir. Tanimlayici turdeki bu arastirmanin evrenini. Turkiye'de Lisans egitimi veren vecit Yuksekokuldaki ogretim elemanlari (N:206) olustiirmaktadii Ornekletti secimine gidilmemistir. Katilim orani %61.0’dir (N:125). Ogretim elemanlarinin %96.80'i, uygulamali egitimi olumlu yonde etkileyebilecek bireysel niteligin, egitimcilerin yeterli bilgi, beceri ve deneyin- sahibi olmalarini. %85.60i olumsuz bireysel nitelik olarak, uygulama yapmaya karsi oiumsiiz tulum ve motivasyon eksikligi oldugunu belirtmislerdir. Ogretim elemanlarinin %96.0'i uygulamanin yeterli sayida ogretim elemani ile yapilmasinin egitimi olumlu yonde etkileyen temel etmen oklugunu belirtirken. ' 688.01 ise olumsuz etm...
Engineering Science and Technology, an International Journal, 2021
Turkey attaches great importance to energy diversification to reduce the energy dependence on fos... more Turkey attaches great importance to energy diversification to reduce the energy dependence on fossil resources. In this regard, Turkey assigned energy targets by 2023 including 20 GW of installed wind capacity. Yet, despite the good efforts, the current wind installed capacity of 8 GW is far behind the assigned target. This study presents a comprehensive review of wind energy status in Turkey focusing on policies and incentives for improvement of wind energy progress in the country. To that end, the global wind energy market is evaluated and a set of recommendations is presented in the context of the importance of local employment and establishment of local wind energy industry. Then, a feasibility analysis is performed to discuss the current feed-in tariff scheme in Turkey. Lastly, Turkey's competitive position is evaluated over a SWOT analysis to give an overview of all positive and negative determinants, considering internal and external factors.
Residential load scheduling optimization for demand-side management under time-of-use rate
2018 6th International Istanbul Smart Grids and Cities Congress and Fair (ICSG), 2018
In this study, a load scheduling optimization in terms of demand response (DR) is performed to re... more In this study, a load scheduling optimization in terms of demand response (DR) is performed to reduce total electricity bills of residential households without exceeding the maximum peak power limit set by the entity. A mixed integer linear programming (MILP) based model is applied to schedule shiftable loads to off-peak hours under time-of-use (TOU) rate. It is also aimed to manage electric vehicle loads to overcome problems that could be possibly arise from high penetration of the electric vehicles to the grid in a near future. Results showed that, the proposed method allows end-users to reduce their total electricity cost by managing their shiftable loads while significantly contributing to the reduction in peak-to-average ratio (PAR) of the household's load demand.
Optimal sizing of PV-BESS units for home energy management system-equipped households considering day-ahead load scheduling for demand response and self-consumption
Smart thermostats and home energy management systems (HEMSs) are generally studied separately. Ho... more Smart thermostats and home energy management systems (HEMSs) are generally studied separately. However, their joint use can provide a greater benefit. Therefore, this study primarily aims to combine a smart thermostat with a HEMS. The mixed-integer linear programming (MILP)-based HEMS performs day-ahead load scheduling for cost-minimization and provides optimal demand response (DR) and photovoltaic (PV) self-consumption, and the fuzzy logic-based thermostat aims efficient DR of airconditioning and maintenance of thermal comfort. In the first stage, unlike conventional fixed set-point thermostats, the proposed thermostat defines different setpoints for each time interval, by fuzzifying input parameters of electricity prices, solar radiation, and occupant presence, to be used by HEMS. In the second stage, the HEMS schedules the operation of time-shiftable, thermostatically controlled, and power-shiftable (battery energy storage system (BESS), electric vehicle (EV)) loads. The HEMS considers bi-directional power flow between home, BESS, EV, and grid, as well as battery degradation to avoid unnecessary energy arbitrage. The simulation results show that a daily cost reduction of 53.2 % is achieved under time-of-use (TOU) and feed-in tariff rates of Turkey. AC cost is reduced by 24 % compared to conventional thermostats. In a future scenario of real-time pricing (RTP) and dynamic feed-in tariff, vehicle-to-grid (V2G) becomes possible.
Electric vehicles and charging infrastructure in Turkey: An overview
Renewable & Sustainable Energy Reviews, Jun 1, 2021
Abstract The depletion of fossil resources, energy dependency, increase in fuel costs and environ... more Abstract The depletion of fossil resources, energy dependency, increase in fuel costs and environmental concerns caused by fossil fuel vehicles, along with the advances in battery technology and their manufacturing processes have promoted a transition towards electric vehicles (EV). Depending on inner and external factors, some countries fastly adopted the new technology, whereas others act more slowly. In this study, an overview of Turkey's position in EV technology is presented. The current EV, charging infrastructure, and battery market, as well as EV-related regulations, research and development (R&D) activities, and industry in the country are evaluated. An EV charging station (EVCS) density map of Turkey is formed to illustrate the deficiencies in the existing charging infrastructure. The challenges and opportunities in the country are discussed and presented in the form of a Strengths, Weaknesses, Opportunities, and Threats (SWOT) analysis and the study is concluded with a list of recommendations. Currently, the public in Turkey is focused on the state-supported “local brand EV” project. However, the acceptance of EVs is still low in the country. To that end, social awareness-raising activities, especially electric public transportation and electric public fleets, should be promoted for EVs to achieve their higher visibility. The EVCS infrastructure should be further expanded in the eastern part of Turkey and further steps should be taken regarding EV/EVCS-related incentives.
2017 10th International Conference on Electrical and Electronics Engineering (ELECO), 2017
Inverted pendulum systems have an important place in practice for control problems due to their n... more Inverted pendulum systems have an important place in practice for control problems due to their nonlinear structures. It is a very difficult task to control the orientation and speed of objects and robots which are free in three dimensions. These systems constitute the substructure of many advanced systems. Conventional actuators may not be used in such applications due to various limitations. Under these circumstances usage of reaction wheels come into prominence. Reaction wheel based systems are used for orienting, coordinating and balancing of spacecraft, transport systems, and other such systems. In this study, dual axis self-balancing reaction wheel based inverted pendulum system which is a basis for many complex systems has been designed, manufactured and controlled.
Arastirmanin amaci. I icmsirelik Yuksekokullarinda gorev yapan ogretim elemanlarinin uygulamali e... more Arastirmanin amaci. I icmsirelik Yuksekokullarinda gorev yapan ogretim elemanlarinin uygulamali egitimi olumlu ya olumsuz yonde etkileyebilecek bireysel nitelikleri, uygulama programinin yurutuldugu ve yapildigi kununlarin organizasyon ve isleyisleri ile ilgili degerlendirmelerini saptamaktir. Tanimlayici turdeki bu arastirmanin evrenini. Turkiye'de Lisans egitimi veren vecit Yuksekokuldaki ogretim elemanlari (N:206) olustiirmaktadii Ornekletti secimine gidilmemistir. Katilim orani %61.0’dir (N:125). Ogretim elemanlarinin %96.80'i, uygulamali egitimi olumlu yonde etkileyebilecek bireysel niteligin, egitimcilerin yeterli bilgi, beceri ve deneyin- sahibi olmalarini. %85.60i olumsuz bireysel nitelik olarak, uygulama yapmaya karsi oiumsiiz tulum ve motivasyon eksikligi oldugunu belirtmislerdir. Ogretim elemanlarinin %96.0'i uygulamanin yeterli sayida ogretim elemani ile yapilmasinin egitimi olumlu yonde etkileyen temel etmen oklugunu belirtirken. ' 688.01 ise olumsuz etm...
Engineering Science and Technology, an International Journal, 2021
Turkey attaches great importance to energy diversification to reduce the energy dependence on fos... more Turkey attaches great importance to energy diversification to reduce the energy dependence on fossil resources. In this regard, Turkey assigned energy targets by 2023 including 20 GW of installed wind capacity. Yet, despite the good efforts, the current wind installed capacity of 8 GW is far behind the assigned target. This study presents a comprehensive review of wind energy status in Turkey focusing on policies and incentives for improvement of wind energy progress in the country. To that end, the global wind energy market is evaluated and a set of recommendations is presented in the context of the importance of local employment and establishment of local wind energy industry. Then, a feasibility analysis is performed to discuss the current feed-in tariff scheme in Turkey. Lastly, Turkey's competitive position is evaluated over a SWOT analysis to give an overview of all positive and negative determinants, considering internal and external factors.
Residential load scheduling optimization for demand-side management under time-of-use rate
2018 6th International Istanbul Smart Grids and Cities Congress and Fair (ICSG), 2018
In this study, a load scheduling optimization in terms of demand response (DR) is performed to re... more In this study, a load scheduling optimization in terms of demand response (DR) is performed to reduce total electricity bills of residential households without exceeding the maximum peak power limit set by the entity. A mixed integer linear programming (MILP) based model is applied to schedule shiftable loads to off-peak hours under time-of-use (TOU) rate. It is also aimed to manage electric vehicle loads to overcome problems that could be possibly arise from high penetration of the electric vehicles to the grid in a near future. Results showed that, the proposed method allows end-users to reduce their total electricity cost by managing their shiftable loads while significantly contributing to the reduction in peak-to-average ratio (PAR) of the household's load demand.
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