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Conference Paper: Mid-range wireless power transfer with segmented coil transmitters for implantable heart pumps

TitleMid-range wireless power transfer with segmented coil transmitters for implantable heart pumps
Authors
KeywordsHeart
Capacitors
Couplings
Power generation
Sensitivity
Load modeling
Issue Date2016
PublisherIEEE. The Journal's web site is located at http://ieeexplore.ieee.org/xpl/mostRecentIssue.jsp?punumber=6882078
Citation
The 2016 IEEE International Workshop on Electromagnetics: Applications and Student Innovation Competition (iWEM 2016), Nanjing, Jiangsu, China, 16-18 May 2016. In Conference Proceedings, 2016, p. 1-3 How to Cite?
AbstractIn wireless power transfer systems, the transmitting coil dimensions can substantially affect the transmission range and alignment sensitivity. We found that a transmitting coil with larger inner and outer diameter has a wider transmission range and lower alignment sensitivity. Thus, we developed a larger coil (24¿¿30 cm2) designed to be embedded in the back of a vest to power DC pumps for artificial hearts or LVADs. To significantly reduce the required voltage, the coil was divided into 8 segments with resonant capacitors. The coil was operated at 6.78 MHz and evaluated with a 5.3-cm diameter receiving coil. A circuit model for the energy coupling coils was developed to predict the output power and efficiency. Having a coil separation of 7.7 cm, the output power and efficiency of the energy coupling coils are higher than 48 W and 80%, respectively. The system was experimentally tested with a DC pump, demonstrating that the proposed coil segmentation technique can significantly reduce the transmitter voltage to a safe level (~10 Vrms).
Persistent Identifierhttp://hdl.handle.net/10722/229806
ISBN

 

DC FieldValueLanguage
dc.contributor.authorTang, SC-
dc.contributor.authorLun, TLT-
dc.contributor.authorGuo, Z-
dc.contributor.authorKwok, KW-
dc.contributor.authorMcDannold, NJ-
dc.date.accessioned2016-08-23T14:13:23Z-
dc.date.available2016-08-23T14:13:23Z-
dc.date.issued2016-
dc.identifier.citationThe 2016 IEEE International Workshop on Electromagnetics: Applications and Student Innovation Competition (iWEM 2016), Nanjing, Jiangsu, China, 16-18 May 2016. In Conference Proceedings, 2016, p. 1-3-
dc.identifier.isbn978-1-4673-8194-9-
dc.identifier.urihttp://hdl.handle.net/10722/229806-
dc.description.abstractIn wireless power transfer systems, the transmitting coil dimensions can substantially affect the transmission range and alignment sensitivity. We found that a transmitting coil with larger inner and outer diameter has a wider transmission range and lower alignment sensitivity. Thus, we developed a larger coil (24¿¿30 cm2) designed to be embedded in the back of a vest to power DC pumps for artificial hearts or LVADs. To significantly reduce the required voltage, the coil was divided into 8 segments with resonant capacitors. The coil was operated at 6.78 MHz and evaluated with a 5.3-cm diameter receiving coil. A circuit model for the energy coupling coils was developed to predict the output power and efficiency. Having a coil separation of 7.7 cm, the output power and efficiency of the energy coupling coils are higher than 48 W and 80%, respectively. The system was experimentally tested with a DC pump, demonstrating that the proposed coil segmentation technique can significantly reduce the transmitter voltage to a safe level (~10 Vrms).-
dc.languageeng-
dc.publisherIEEE. The Journal's web site is located at http://ieeexplore.ieee.org/xpl/mostRecentIssue.jsp?punumber=6882078-
dc.relation.ispartofIEEE International Workshop on Electromagnetics Proceedings-
dc.rightsIEEE International Workshop on Electromagnetics Proceedings. Copyright © IEEE.-
dc.rights©2016 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works.-
dc.subjectHeart-
dc.subjectCapacitors-
dc.subjectCouplings-
dc.subjectPower generation-
dc.subjectSensitivity-
dc.subjectLoad modeling-
dc.titleMid-range wireless power transfer with segmented coil transmitters for implantable heart pumps-
dc.typeConference_Paper-
dc.identifier.emailKwok, KW: kwokkw@hku.hk-
dc.identifier.authorityKwok, KW=rp01924-
dc.description.natureLink_to_subscribed_fulltext-
dc.identifier.doi10.1109/iWEM.2016.7504897-
dc.identifier.scopuseid_2-s2.0-84982854566-
dc.identifier.hkuros259939-
dc.identifier.hkuros267649-
dc.identifier.spage1-
dc.identifier.epage3-
dc.publisher.placeUnited States-
dc.customcontrol.immutablesml 160831-

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