Valerio De Santis

Prof. Valerio De Santis

University of L'Aquila, DIIIE, Dept. of Industrial and Information Engineering and Economics
orcid

Research Focus & Metrics

Academic Career Length

20Years (2007-Present)

(Calculated once Scilit publication data is synced: current year − year of first publication + 1)

Representative Publications

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1 September 2015 in Brain Stimulation
Verified
Journal Article
Closed access
ILIlkka Laakso
Ilkka Laakso
STSatoshi Tanaka
Satoshi Tanaka
SKSoichiro Koyama
Soichiro Koyama
Valerio De SantisValerio De Santis
Valerio De Santis
AHAkimasa Hirata
Akimasa Hirata

11 January 2016 in IEEE Transactions on Microwave Theory and Techniques
Verified
Journal Article
Closed access
TCTommaso Campi
Tommaso Campi
SCSilvano Cruciani
Silvano Cruciani
FPFederica Palandrani
Federica Palandrani
Valerio De SantisValerio De Santis
Valerio De Santis
AHAkimasa Hirata
Akimasa Hirata
Mauro FelizianiMauro Feliziani
Mauro Feliziani
This paper deals with the electric and magnetic field (EMF) safety aspects of a wireless power transfer (WPT) system based on magnetic resonant coupling between two coils. The primary coil is assumed to be on-body, while the secondary coil is assumed to be inside the human body and connected to a battery recharge system of an active implantable medical device such as a pacemaker. This study allows us to identify a good preliminary solution of the WPT coil configuration, compensation capacitor topology, and operational frequency. Demonstrative WPT systems operating at two different frequencies are proposed in order to verify the WPT performances. The EMF safety has been finally assessed by numerical dosimetry studies using anatomically realistic human body models revealing no particular concerns about this application.

4 October 2021 in IEEE Transactions on Electromagnetic Compatibility
Verified
Journal Article
Closed access
AHAkimasa Hirata
Akimasa Hirata
YDYinliang Diao
Yinliang Diao
TOTeruo Onishi
Teruo Onishi
KSKensuke Sasaki
Kensuke Sasaki
Seungyoung AhnSeungyoung Ahn
Seungyoung Ahn
JCJi Chen
Ji Chen
This article reviews recent standardization activities and scientific studies related to the assessment of human exposure to electromagnetic fields (EMF). The differences of human exposure standards and assessment of consumer products and medical applications are summarized. First, we reviewed human body modeling and tissue dielectric properties. Then, we explain the rationale of current exposure standards from the viewpoint of EMF and the standardization process for product compliance based on these exposure standards. The assessment of wireless power transfer, as an example of emerging wireless devices, and environmental EMFs in our daily lives are reviewed. Safety in magnetic resonance systems, where the EMF exposure is much larger than from typical consumer devices, is also reviewed. Finally, we summarize future research directions and research needs for EMF safety.

2 April 2020 in IEEE Transactions on Vehicular Technology
Verified
Journal Article
Closed access
PMPhilip Machura
Philip Machura
Valerio De SantisValerio De Santis
Valerio De Santis
QLQuan Li
Quan Li
Electric vehicles (EVs) are limited by the on-board batteries in terms of driving range and charging duration. In this paper, the driving range of electric vehicles (EVs) charged by wireless power transfer (WPT) systems is investigated. Specifically, a force-based vehicle model is coupled with a simple extended battery model to simulate the impact of wireless charging on the state of charge of the accumulator sub-system. In total, three different scenarios, i.e. urban, highway and combined driving are presented. The trade-off between having a standalone charging option versus combined dynamic and quasi-dynamic wireless charging is outlined and minimum system requirements, such as charging power levels and road coverage, for unlimited range are established. Furthermore, the effect of external factors such as ambient temperature, battery age and wireless transfer efficiency is investigated. It is shown that employing combined charging at medium power levels is sufficient to achieve unlimited range compared to high power requirements for standalone charging. Finally, safety concerns regarding human exposure are addressed with lower charging powers.

19 January 2016 in IEEE Transactions on Microwave Theory and Techniques
Verified
Journal Article
Closed access
TCTommaso Campi
Tommaso Campi
SCSilvano Cruciani
Silvano Cruciani
Valerio De SantisValerio De Santis
Valerio De Santis
Mauro FelizianiMauro Feliziani
Mauro Feliziani
A wireless power transfer (WPT) system based on magnetic resonant coupling is applied to a pacemaker for recharge its battery. The primary coil is assumed to be on-body, while the secondary coil is in-body. Three different configurations of the secondary coil are hereby investigated placing it inside the titanium case of the pacemaker, on the top surface of the case, or being part of the top surface case. The operational frequency is fixed to be at a relatively low frequency (20 kHz) in order to allow field penetration through the case and to limit the electric and magnetic field safety and thermal increase issues. For each examined configuration, these aspects are investigated by numerical and experimental techniques. The obtained results demonstrate the feasibility of the proposed solutions highlighting their advantages and disadvantages.

1 October 2014 in IEEE Transactions on Electromagnetic Compatibility
Verified
Journal Article
Closed access
XCXi Lin Chen
Xi Lin Chen
AUAghuinyue E. Umenei
Aghuinyue E. Umenei
DBDavid W. Baarman
David W. Baarman
NCNicolas Chavannes
Nicolas Chavannes
Valerio De SantisValerio De Santis
Valerio De Santis
NKNiels Kuster
Niels Kuster
In this study, human exposure to close-range wireless power transfer (WPT) systems operating in the frequency range 0.1-10 MHz with coil diameters up to 150 mm are investigated. Approximation formulae, which include scaling factors derived from numerical simulations that take variations of complex human anatomies into consideration, are proposed to conservatively estimate human exposure with respect to the most authoritative exposure guidelines. The approximation has been verified for two precommercial prototype WPT systems, the first of which, a 5-W system operating at 100 kHz, has been evaluated in this study; the second system been verified was reported in a separate study and operates at 6.78 MHz with a nominal current of 5.4 A rms. Based on the results obtained, the optimal operational frequency range for WPT with respect to compliance with exposure safety guidelines is revealed to be ca. 1-2.5 MHz. In summary, this study provides novel and insightful information for the design of an exposure-compliant close-range magnetic resonant WPT system.