Modern Trends in Inductive Power Transfer for Transportation Applications
Open accessAbstract
Inductive power transfer (IPT) has progressed to be a power distribution system offering significant benefits in modern automation systems and particularly so in stringent environments. Here, the same technology may be used in very dirty environments and in a clean room manufacture. This paper reviews the development of simple factory automation (FA) IPT systems for both today's complex applications and onward to a much more challenging application—IPT roadway. The underpinning of all IPT technology is two strongly coupled coils operating at resonance to transfer power efficiently. Over time the air-gap, efficiency, coupling factor, and power transfer capability have significantly improved. New magnetic concepts are introduced to allow misalignment, enabling IPT systems to migrate from overhead monorails to the floor. However, the demands of IPT roadway bring about significant challenges. Here, compared with the best FA practice, air-gaps need to be 100 times larger, power levels greater than ten times, system losses ten times lower to meet efficiency requirements, and systems from different manufacturers must be interoperable over the full range of operation. This paper describes how roadway challenges are being met and outlines the problems that still exist and the solutions designers are finding to them.
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Many methods are proposed like road built-in pad, pad array-based coupling technique, and segmental track strategy.
“Many methods are proposed like road built-in pad [160], pad array-based coupling technique [161], and segmental track strategy [162].”
From A Review of Bidirectional On-Board Chargers for Electric Vehicles (2021) · cites this paper as [161]
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Cited by
Sorted by citations
Inductive Wireless Power Transfer Charging for Electric Vehicles—A Review
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“Many methods are proposed like road built-in pad [160], pad array-based coupling technique [161], and segmental track strategy [162].”
MethodControl design for optimizing efficiency in inductive power transfer systems
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- Authors
- Covic, G. A., & Boys, J. T.
- Affiliations
- University of Auckland (NZ)
- ORCID
- Covic, Grant Anthony
- Venue
- IEEE Journal of Emerging and Selected Topics in Power Electronics
- Published
- 2013-03
- Volume
- 1
- Issue
- 1
- Pages
- 28-41
- ISSN
- 2168-6777 (ISSN-L)
- 2168-6785
- OpenAlex
- W2056156424
- Cited by
- 1,263
- References
- 78
- Citations by year
- 2026: 48 · 2025: 79 · 2024: 89 · 2023: 111 · 2022: 106 · 2021: 98 · 2020: 125 · 2019: 122 · 2018: 105 · 2017: 139 · 2016: 116 · 2015: 67 · 2014: 56 · 2013: 2
- FWCI
- 48.19
- Type
- journal article
- Language
- en
- Open access
- bronze
- doi.org
- Licence
- Locations
- IEEE Journal of Emerging and Selected Topics in Power Electronics (publishedVersion)
- Topics
- Physical Sciences › Engineering › Electrical and Electronic Engineering › Wireless Power Transfer Systems
- Physical Sciences › Engineering › Mechanical Engineering › Induction Heating and Inverter Technology
- Physical Sciences › Engineering › Electrical and Electronic Engineering › Advanced DC-DC Converters
- Keywords
- inductive power transfer, factory automation, resonant coupling, air gap, coupling coefficient, power transfer efficiency, misalignment, interoperability
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