PapersFlow Research Brief
Wireless Power Transfer Systems
Research Guide
What is Wireless Power Transfer Systems?
Wireless Power Transfer Systems are technologies that enable the non-radiative transmission of electrical power through inductive coupling, magnetic resonant coupling, or other contactless methods for applications including electric vehicle charging and biomedical implants.
Research on Wireless Power Transfer Systems encompasses 32,676 papers focused on analysis, design, and optimization. Key methods include inductive power transfer and magnetic resonant coupling, with applications in electric vehicle charging, biomedical implants, and contactless power transmission. Studies address efficiency optimization, coil design, and dynamic charging for implantable devices and vehicles.
Topic Hierarchy
Research Sub-Topics
Magnetic Resonant Coupling for Wireless Power Transfer
This sub-topic investigates strongly coupled magnetic resonance systems for mid-range power transfer, including frequency tuning and impedance matching. Researchers model multi-coil configurations and analyze power delivery efficiency.
Inductive Power Transfer Coil Design
This sub-topic covers optimization of coil geometries, materials, and topologies like DD and bipolar pads for inductive coupling. Researchers simulate mutual inductance, misalignment tolerance, and power density.
Wireless Charging for Electric Vehicles
This sub-topic addresses dynamic and static wireless charging infrastructure for EVs, including road-embedded pads and vehicle alignment. Researchers focus on power levels above 7kW, safety standards, and grid integration.
Wireless Power Transfer for Biomedical Implants
This sub-topic explores miniaturized inductive links for powering pacemakers, neural stimulators, and drug delivery devices. Researchers study tissue interference, bio-compatibility, and closed-loop power control.
Efficiency Optimization in Wireless Power Transfer
This sub-topic develops algorithms for maximum power transfer tracking, harmonic mitigation, and compensation topologies like LCC and SS. Researchers quantify losses from parasitics, frequency splitting, and load variations.
Why It Matters
Wireless Power Transfer Systems support electric vehicle charging by enabling contactless power delivery, as detailed in "Wireless Power Transfer for Electric Vehicle Applications" by Siqi Li and Chris Mi (2014), which reviews magnetic resonance techniques developed over 30 years. In biomedical implants, these systems power devices without wires, demonstrated by efficient transfer over distances up to 8 times coil radius at 60 watts and 40% efficiency in "Wireless Power Transfer via Strongly Coupled Magnetic Resonances" by André Kurs et al. (2007). Efficiency improvements and range adaptations, shown in "Analysis, Experimental Results, and Range Adaptation of Magnetically Coupled Resonators for Wireless Power Transfer" by Alanson P. Sample et al. (2010), extend usability to mobile electronics and infrastructure for plug-in vehicles, per "Review of Battery Charger Topologies, Charging Power Levels, and Infrastructure for Plug-In Electric and Hybrid Vehicles" by Murat Yılmaz and Philip T. Krein (2012).
Reading Guide
Where to Start
"Wireless Power Transfer—An Overview" by Zhang et al. (2018) provides a broad summary of techniques, applications, and challenges, making it ideal for initial understanding before diving into specifics.
Key Papers Explained
"Wireless Power Transfer via Strongly Coupled Magnetic Resonances" by Kurs et al. (2007) establishes the core experimental demonstration of efficient resonant transfer over meters. Sample et al. (2010) build on this with analysis and range adaptation of magnetically coupled resonators. Li and Mi (2014) extend the framework to electric vehicle applications, while Zhang et al. (2018) synthesize these into an overview. Yılmaz and Krein (2012) connect to charger infrastructure.
Paper Timeline
Most-cited paper highlighted in red. Papers ordered chronologically.
Advanced Directions
Research frontiers center on efficiency optimization, coil design for dynamic charging, and applications in electric vehicles and implants, as ongoing in the 32,676 papers. No recent preprints or news in the last 12 months suggest focus remains on refining established methods like those in Sample et al. (2010) and Li and Mi (2014).
Papers at a Glance
| # | Paper | Year | Venue | Citations | Open Access |
|---|---|---|---|---|---|
| 1 | Wireless Power Transfer via Strongly Coupled Magnetic Resonances | 2007 | Science | 5.4K | ✓ |
| 2 | Power Electronics: Converters, Applications and Design | 1989 | — | 4.8K | ✕ |
| 3 | Review of Battery Charger Topologies, Charging Power Levels, a... | 2012 | IEEE Transactions on P... | 2.9K | ✕ |
| 4 | Energy Scavenging for Mobile and Wireless Electronics | 2005 | IEEE Pervasive Computing | 2.6K | ✕ |
| 5 | A review of power harvesting using piezoelectric materials (20... | 2007 | Smart Materials and St... | 2.6K | ✕ |
| 6 | RF power amplifiers for wireless communications | 2000 | IEEE Microwave Magazine | 2.3K | ✕ |
| 7 | Wireless Power Transfer for Electric Vehicle Applications | 2014 | IEEE Journal of Emergi... | 2.0K | ✕ |
| 8 | Energy Harvesting From Human and Machine Motion for Wireless E... | 2008 | Proceedings of the IEEE | 1.8K | ✕ |
| 9 | Analysis, Experimental Results, and Range Adaptation of Magnet... | 2010 | IEEE Transactions on I... | 1.8K | ✕ |
| 10 | Wireless Power Transfer—An Overview | 2018 | IEEE Transactions on I... | 1.6K | ✕ |
Frequently Asked Questions
What is magnetic resonant coupling in Wireless Power Transfer Systems?
Magnetic resonant coupling uses self-resonant coils in a strongly coupled regime to achieve efficient nonradiative power transfer over distances up to 8 times the coil radius. Kurs et al. (2007) experimentally demonstrated 60 watts transfer with 40% efficiency over 2 meters. This method supports applications in electric vehicles and implants.
How does Wireless Power Transfer apply to electric vehicle charging?
Wireless Power Transfer for electric vehicles employs magnetic resonance based on inductive power transfer principles developed over 30 years. Li and Mi (2014) outline its rapid development for contactless charging. Systems categorize into off-board and on-board types with unidirectional or bidirectional flow, as reviewed by Yılmaz and Krein (2012).
What are key methods for efficiency optimization in Wireless Power Transfer?
Efficiency optimization involves coil design, resonant converters, and range adaptation in magnetically coupled resonators. Sample et al. (2010) provide analysis and experimental results for range extension. Zhang et al. (2018) overview methods addressing low power density and high costs in battery-powered devices.
What role does Wireless Power Transfer play in biomedical implants?
Wireless Power Transfer powers implantable devices through contactless transmission using inductive and resonant coupling. The field covers dynamic charging for implants, as noted in the research cluster description. Paradiso and Starner (2005) discuss energy scavenging integration for wireless electronics.
Which papers define the foundations of Wireless Power Transfer Systems?
Foundational works include "Wireless Power Transfer via Strongly Coupled Magnetic Resonances" by Kurs et al. (2007) with 5445 citations on resonant coils. "Wireless Power Transfer for Electric Vehicle Applications" by Li and Mi (2014) has 2049 citations on EV uses. "Wireless Power Transfer—An Overview" by Zhang et al. (2018) summarizes techniques with 1561 citations.
What is the current state of Wireless Power Transfer research?
The field includes 32,676 works on inductive power transfer, magnetic resonant coupling, and efficiency optimization. Applications span electric vehicle charging and biomedical implants. No recent preprints or news coverage from the last 12 months indicate steady maturation without new disruptions.
Open Research Questions
- ? How can coil designs be optimized to maintain high efficiency over varying distances and misalignments in dynamic wireless charging for electric vehicles?
- ? What adaptations of strongly coupled magnetic resonances improve power transfer for deeply implanted biomedical devices?
- ? Which control strategies in resonant converters maximize bidirectional power flow for vehicle-to-grid applications?
- ? How do environmental factors like metal objects affect range and efficiency in magnetically coupled resonators?
- ? What integration methods combine wireless power transfer with energy harvesting from motion for extended device operation?
Recent Trends
The field maintains 32,676 papers with no specified 5-year growth rate.
Highly cited works from 2007-2018, such as Kurs et al. at 5445 citations and Li and Mi (2014) at 2049, indicate sustained interest in magnetic resonant coupling and EV applications.
2007Absence of recent preprints or news over the last 12 months points to consolidation of core techniques without new surges.
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