Resonance-filtering combo system for continuous wireless charging range coverage

Name: Resonance-filtering combo system for continuous wireless charging range coverage
Author: Sağlam, Üstün, Tekin, Ahmet

İsim	Resonance-filtering combo system for continuous wireless charging range coverage
Yazar	Sağlam, Üstün, Tekin, Ahmet
Basım Tarihi:	2020-09
Basım Yeri	- Cambridge University Press
Konu	Dual-frequency wireless charger, Uniform wireless charging, Wireless power transfer
Tür	Süreli Yayın
Dil	İngilizce
Dijital	Evet
Yazma	Hayır
Kütüphane:	Özyeğin Üniversitesi
Demirbaş Numarası	2052-8418
Kayıt Numarası	589bb8b7-ff92-41e2-91cf-5814da7f6cbb
Lokasyon	Electrical & Electronics Engineering
Tarih	2020-09
Örnek Metin	Distribution of wireless power charging field uniformly on a large area pad is critical for power receivers, particularly for wearable devices, wherein small form factor coils are involved. Since the receiver coil size is quite limited in these types of applications, the device is very sensitive to the amount of field it could retain and hence, it needs special placement or snapping mechanism to fix it at an optimum location for reliable wireless charging. In order to overcome this limitation for the end-user, a dual-mode multi-coil power transceiver system is proposed; utilizing resonance filtering to increase the amount of total power delivered with the rather uniform spatial distribution. Two concentric coils; center one driven by 6.78-MHz high-frequency driver (A4WP) and the outer larger one with a 200-KHz low-frequency driver (Q(i)) with resonant blocker could transfer up to 50 mW standards compliant flat power to a 13-mm radius 30-turns wearable receiver coil everywhere across an 8-cm radius charging pad area without any alignment requirement or snapping. Two different feedback topologies corresponding to each of the H-Bridge power drivers were also presented as an automatic series resonance coil drive frequency lock mechanism, extracting peak powers for each system individually from a standard 5 V-1A USB wall charger.
Cilt	7

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Resonance-filtering combo system for continuous wireless charging range coverage

Yazar Sağlam, Üstün, Tekin, Ahmet

Basım Tarihi 2020-09

Basım Yeri - Cambridge University Press

Konu Dual-frequency wireless charger, Uniform wireless charging, Wireless power transfer

Tür Süreli Yayın

Dil İngilizce

Dijital Evet

Yazma Hayır

Kütüphane Özyeğin Üniversitesi

Demirbaş Numarası 2052-8418

Kayıt Numarası 589bb8b7-ff92-41e2-91cf-5814da7f6cbb

Lokasyon Electrical & Electronics Engineering

Tarih 2020-09

Örnek Metin Distribution of wireless power charging field uniformly on a large area pad is critical for power receivers, particularly for wearable devices, wherein small form factor coils are involved. Since the receiver coil size is quite limited in these types of applications, the device is very sensitive to the amount of field it could retain and hence, it needs special placement or snapping mechanism to fix it at an optimum location for reliable wireless charging. In order to overcome this limitation for the end-user, a dual-mode multi-coil power transceiver system is proposed; utilizing resonance filtering to increase the amount of total power delivered with the rather uniform spatial distribution. Two concentric coils; center one driven by 6.78-MHz high-frequency driver (A4WP) and the outer larger one with a 200-KHz low-frequency driver (Q(i)) with resonant blocker could transfer up to 50 mW standards compliant flat power to a 13-mm radius 30-turns wearable receiver coil everywhere across an 8-cm radius charging pad area without any alignment requirement or snapping. Two different feedback topologies corresponding to each of the H-Bridge power drivers were also presented as an automatic series resonance coil drive frequency lock mechanism, extracting peak powers for each system individually from a standard 5 V-1A USB wall charger.

Cilt 7