Yenilenebilir Enerji Kaynaklarına Sahip Bir Evin Talep Karakteristiğine Uygun Bir İnverter Tasarımının İncelenmesi

Dünyamızın artan enerji gereksinimi yenilenebilir enerji kaynaklarına olan ilgiyi artırmıştır. Özellikle, güneş ve rüzgar enerjili güç sistemleri şebekeden bağımsız/şebeke bağlantılı evsel uygulamalarda yaygın olarak kullanılmaya başlanmıştır. Yenilenebilir enerji kaynaklarına sahip bir evde ihtiyaç duyulan sabit genlik ve frekansa sahip AC gerilimin elde edilmesinde bir evirici (inverter) devre kullanılmaktadır. Bir evin elektrik güç kullanımına ait ölçüm verisi incelendiğinde ev elektrik talebinin gün boyunca değişken olduğu ve büyük bir oranda düşük güçlerde kaldığı görülmüştür. Bu yüzden, böyle bir ev için inverter devresinin özellikle düşük güç bölgesindeki verimin iyileştirilmesi gereklidir. Bu çalışmada, inverter devresinde kullanılan LC filtre devresinde bulunan indüktör değerinin yük akımına göre değişken olmasının inverter devresinin verimi üzerine etkisi incelenmiştir. Kullanılan yöntemle inverter devresinden çekilen akımdaki dalgalanmanın düşürülebildiği ve inverter devresinin düşük güçlerdeki veriminin büyük oranda iyileştirilebildiği gösterilmiştir. Daha verimli bir inverter devresi ile yenilenebilir enerji kaynaklarından elde edilen enerji daha etkin bir şekilde kullanılabilecektir.

Anahtar Kelimeler:

Yenilenebilir enerji, inverter tasarımı, evsel elektrik güç talebi, verim artışı, değişken filtre indüktansı

Analysis of a Power Inverter Design Considering The Demand Characteristics of a House With Renewable Energy Sources

Increasing energy demand in the world has shifted the interest to renewable energy sources. Specifically, solar and wind power systems for both grid connected and stand-alone homes have become a widespread application. An inverter is used to obtain AC voltage with fixed amplitude and frequency in a renewable energy supplied residential house. When measured residential electrical power demand data is analyzed, it is seen that the demand varies within a wide range during a day and stays at low power levels most of the day. Thus, the light load efficiency of inverter circuit must be improved for residential applications. In this study, the effect of variable inductor use-with reference to the load current- at the inverter LC filter circuit on the inverter light load efficiency is investigated. It is shown that the inverter light load efficiency can be considerably improved due to the reduction of current ripple drawn from the inverter. With more efficient inverter design, the energy from renewable sources can be utilized more efficiently.

Keywords:

Renewable energy, inverter design, residential electrical power demand, efficiency improvement, variable filter inductance,

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Selamogullari, U.S, ''A systems approach for stand-alone residential fuel cell power system design '', Doktora Tezi, Rensselaer Polytechnic Insttitute, (2005).
Selamogullari U.S, Torrey D.A., Salon S. ''A Systems Approach fo a Stand-alone Residential Fuel Cell Inverter Design '', IEEE Transactions on Energy Conversion, 25: 741-749, (2010).
Akca H., Selamogullari U.S., ''Hybrid switch use for light load efficiency improvement of a power inverter for stand-alone residential renewable energy system '', 15th European Conference on Power Electronics and Applications, 1-6, (2013).
Kislovski A. S., ''Quasi-Linear Controllable Inductor '', IEEE Proceedings, 75: 267-271, (1997).
Medini D., Ben-Yaakov S., A., ''Current Controlled Variable-Inductor for High Frequency Resonant Power Circuits '', Ninth Annual Applied Power Electronics Conference and Exposition, Orlando, FL , USA, 219-225, (1994)
Perdigao, M.S., Menke, M.F., Seidel, A.R., Pinto, R.A., Alonso, J.M., ''A Review on Variable Inductors and Variable Transformers: Applications to Lightning Devices '', IEEE Transactions on Industry Applications, 52: 531-547, (2016)
Li D., Zhu Z.Q, Qin Y. A., ''Novel Variable Reactor and Its Application to Shunt Power Quality Controller'', IEEE Transactions on Power Electronics, 31: 4148-4158, (2016)
Vaya, A.K., Parida, T. K., Singh, S.K., ''Efficiency Improvement of a Boost PFC Converter using Non-linear Inductor, International Conference on Power, Signals, Controls and Computation, Thrissur, India, 1-6. (2014)
Alonso J.M., Perdigao M.S., Costa M. A. D., Martinez G., Osorio R., ''Analysis and Experiments on a Single-Inductor Half-Bridge LED Driver With Magnetic Control'', IEEE Transactions on Power Electronics, 32: 9179-9190, (2017)
Pinto R.F., Alonso J.M, Perdigao, M.S., F. da Silva M., N. do Prado R., ''A New Technique to Equalize Branch Currents in Multiarray LED Lamps Based on Variable Inductors'', IEEE Transactions on Industry Applications, 52: 521-530, (2016)
Martins M., Perdigao M.S., Mendes A.M.S., Pinto R.A., Alonso J.M., ''Analysis, Design, and Experimentation of a Dimmable Resonant-Switched-Capacitor LED Driver With Variable Inductor Control'', IEEE Transactions on Power Electronics, 32: 3051-3062, (2017)
Hu Y., Huber L., Jovanovic M.M., ''Single-Stage, Universal-Input AC/DC LED Driver With Current-Controlled Variable PFC Boost Inductor'', IEEE Transactions on Power Electronics, 27: 1579-1590, (2012)
Alonso J.M, Dalla Costa M. A., Rico-Secades M., Cardesin J., Garcia J., ''Investigation of a New Control Strategy for Electronics Ballasts Based on Variable Inductor'', IEEE Transactions on Indutrial Electronics, 55(1), 3-10, (2008)
Perdigao M.S., Saraiva, E.S, Alonso, J.M, Cervi, M., ''The Controllable Non-linear Reactor in Electronic Ballasts Applications: A Behavioral Analysis of the Inductance as a Function of both ac and dc Bias Currents'', 43rd International Universities Power Engineering Conference, Padova-Italy, (2008)
Zhang L., Xia Y., Lu K., Fang Y., Ma J., Pan H., Wang D., ''Stress-Based Variable Inductor for Electronic Ballasts'', IEEE Transactions on Magnetics, 51: 840504, (2015)
Gulko M., Medini D., Ben-Yaakov S., ''Inductor-controlled current sourcing resonant inverter and its application as a high pressure lamp driver'', Ninth Annual Applied Power Electronics Conference and Exposition, Orlando, FL, USA, 434-440, (1994)
Stadler M., Pforr J., ''Feed-forward control of non-linear inductors providing soft switching of DC-DC converters'', European Conference on Power Electronics and Applications, Aalborg, Danimarka, (2007)
Bakan A. F., ''A new LVI assisted PSPWM DC-DC Converter, International Conference on Electrical and Electronics Engineering, Bursa-Türkiye, 230-233, (2009)
Wang., L., Pei, Y., Yang, X., Qin, Y., Wang, Z., ''Improving Light and Intermidiate Load Efficiency of Buck Converters with Plannar Nonlinear Inductors and Variable On Time Control'', IEEE Transactions on Power Electronics, 27: 342-353, (2011)
Ahmed, H.F., Cha, H., Kim, S., Kim, D., Kim, H., ''Wide Load Range Efficiency Improvement of a High-Power-Density Bidirectional DC-DC Converter Using an MR Fluid-Gap Inductor'', IEEE Transactions on Industry Applications, 51: 3216-3226, (2015)
Li D., Zhu Z.Q, Qin Y., ''A Novel Variable Reactor and Its Application to Shunt Power Quality Controller'', IEEE Transactions on Power Electronics, 31: 4148-4158, (2016)
Nakamura K., Yamada Y., Nono R., Ohinata T., Arimatsu K., Ichinokura O., ''A Novel 3-D Concentric-Winding-Type Three-Phase Variable Inductor for Reactive Power Compensation in Electric Power Systems'', IEEE Transactions on Magnetics, 53: 2600204, (2017)
Bao-quan K., Hong-jiang T., Ying-qi L., ''Research of Adjustable Inverter Output Filter Based on DC Magnetic Flux Controllable Inductor'', IEEE Vehicle Power and Propulsion Conference, Harbin-China, 1-5. (2008)
Kim, D., Cha, H., Lee, S., Kim, D., ''Characteristic of a Variable Inductor Using Magnetoorheological Fluid for Efficient Power Conversion'', IEEE Transactions on Magnetics, 49: 1901-1904, (2013)
Stenglein, E., Kuebrich, D., Albach, M., ''Prediction of the Non-linear Behavior of a Stepped Air Gap Inductor'', IEEE 17th Workshop on Control and Modeling for Power Electronics, Torendheim-Norway, (2016)
Ge T., Ngo K. D. T., Moss J., ''Two-Dimensional Gapping to Reduce Light-Load Loss of Point-of-Load Inductor'', IEEE Transactions on Power Electronics, 32: 540-549, (2017)
Perdigao, M.S., Trovao, J. P., Alonso J.M., Saravia, E.S., ''Large Signal Characterization of Power Indcutors in EV Bidirectional DC-DC Converters Focused on Core Size Optimization'', IEEE Transactions on Industrial Electronics, 62: 3042-3051, (2015)
Beraki M.W, Trovao J.P.F., Perdigao M.S, Dubois M.R., ''Variable Inductor Based Bidirectional DC–DC Converter for Electric Vehicles'', IEEE Transactions on Vehicular Technology, 66(10), 8764-8772, (2017)
Elma, O., Selamogullari, U.S., ''A new home energy management algorithm with voltage control in a smart home environment'', Energy, 91: 720-731, (2015)
2001 Future Energy Challenge, Texas A&M University Fuel Cell Inverter. Erişim adresi: https://issuu.com/mahmoud66/docs/fuel_cell_inverter_-_10_kw_design__ (Erişim tarihi: 01 Ocak 2019).
Onsemi, FGH40T120SMD teknik doküman. https://www.onsemi.com/pub/Collateral/FGH40T120SMD-D.PDF (Erişim tarihi: 01 Ocak 2019)
PSIM User Manual, https://powersimtech.com/drive/uploads/2017/11/PSIM-User-Manual.pdf (Erişim tarihi: 01 Ocak 2019)
Türkiye İstatistik Kurumu, Nüfus ve Konut Araştırması, 2011. Erişim adresi: http://www.tuik.gov.tr/PreHaberBultenleri.do?id=15843 (Erişim tarihi: 24 Mayıs 2018)