Manyetik Rezonans Kuplajlı Kablosuz Enerji Transferi İçin Yüksek Frekanslı İnverter Tasarımı ve Deneysel Uygulaması

Öz

Bu çalışmada, manyetik rezonans kuplajı tabanlı kablosuz enerji transfer sistemi için yüksek frekanslı tam köprü inverter tasarımı gerçekleştirilmiş ve deneysel olarak doğrulanmıştır. Tasarlanan sistem; AC/DC doğrultucu, güç katı, izolasyonlu gate sürücü devresi, tam köprü inverter, Seri-Seri (SS) kompanzasyon ağı, verici ve alıcı bobinler, doğrultucu devresi ve yük biriminden oluşmaktadır. Sistemde yaklaşık 86.25 kHz çalışma frekansı tercih edilmiş ve rezonans koşulları Litz kablo kullanılarak tasarlanan bobinler ile sağlanmıştır. Anahtarlama kayıplarını azaltmak amacıyla ZCS tabanlı yumuşak anahtarlama tekniği uygulanmış, MOSFET'lerin korunması ve gerilim piklerinin bastırılması için snubber devresi kullanılmıştır. Geliştirilen sistem Van Yüzüncü Yıl Üniversitesi, Elektrik-Elektronik Mühendisliği Bölümü, Elektrik Makineleri Laboratuvarında gerçekleştirilmiş ve farklı bobin mesafelerinde deneysel olarak test edilmiştir. Ölçümler sonucunda bobinler arası mesafenin sistem performansı üzerinde önemli bir etkiye sahip olduğu belirlenmiştir. 100 mm bobin mesafesinde 31.69 VA çıkış gücü ve %35.23 verim elde edilirken, bobin mesafesinin 40 mm'ye düşürülmesiyle çıkış gücü 83.88 VA'e ve sistem verimi %96.50'ye yükselmiştir. Ayrıca gerçekleştirilen osiloskop ölçümleri, primer ve sekonder tarafta rezonans davranışının kararlı şekilde gerçekleştiğini ve enerji transferinin başarılı olarak sürdürüldüğünü göstermiştir.

Anahtar Kelimeler

• Kablosuz enerji transferi
• manyetik rezonans kuplajı
• yüksek frekanslı inverter
• kablosuz batarya şarjı

High Frequency Inverter Design and Experimental Implementation for Magnetic Resonance-Coupled Wireless Energy Transfer

Öz

In this study, a high-frequency full-bridge inverter for a magnetic resonance-coupled wireless energy transfer (MRC-WET) system was designed and experimentally validated. The proposed system consists of an AC/DC rectifier, power stage, isolated gate driver circuit, full-bridge inverter, Series–Series (SS) compensation network, transmitting and receiving coils, rectifier circuit, and load unit. An operating frequency of approximately 86.25 kHz was selected, and resonance conditions were achieved using coils constructed with Litz wire. To reduce switching losses, a Zero Current Switching (ZCS)-based soft-switching technique was employed, while a snubber circuit was incorporated to suppress voltage spikes and protect the MOSFET switching devices. The developed system was implemented and tested experimentally in the Electrical Machines Laboratory of the Department of Electrical and Electronics Engineering at Van Yüzüncü Yıl University. Experimental investigations were conducted at different coil separation distances. The results demonstrated that coil spacing has a significant influence on system performance. At a coil separation distance of 100 mm, the system delivered an output power of 31.69 VA with an efficiency of 35.23%. When the distance was reduced to 40 mm, the output power increased to 83.88 VA and the efficiency reached 96.50%. Oscilloscope measurements further confirmed stable resonant operation on both the primary and secondary sides and successful WET.

Anahtar Kelimeler

• Wireless energy transfer
• magnetic resonance-coupling
• high-frequency inverter
• wireless battery charging

Kaynakça

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