Table of Contents
Evolution of the numbers of papers on wireless power transfer
Let's us look at the timeline of the number of papers (journal and conference papers) published on wireless power related topics. We limit ourselves to Scopus because we are not trying to do a rigorous study, we just want to get a general idea.
Wireless power transfer
Methodology:
- Search on www.scopus.com
- Search within “All fields”
- Search documents containing: “wireless power” OR “wireless energy”
The strings “wireless power” OR “wireless energy” will obviously not capture every document on wireless power, but it's just to get an idea of the rise of publications. A staggering average annual growth of 29% per year can be seen in the last two decades! Indeed, wireless power transfer is on the rise!
Inductive wireless power transfer
Methodology:
- Search on www.scopus.com
- Search within “All fields”
- Search documents containing: “inductive wireless” OR “inductive charging” OR “inductive coupling” OR “inductive power”
Not surprisingly, most papers deal on inductive wireless power transfer. In the last two decades, an average annual growth of 18% per year can be seen. This might seem strange, since inductive WPT is already available on the market. But apparently, there is still a lot to be figured out! Those who think that inductive is not worth researching anymore, the numbers say otherwise!
Capacitive wireless power transfer
Methodology:
- Search on www.scopus.com
- Search within “All fields”
- Search documents containing: “capacitive wireless” OR “capacitive charging” OR “capacitive coupling” OR “capacitive power”
Capacitive wireless power transfer is the little brother of inductive power transfer. The last decade, about three times more papers are published on inductive compared to capacitive WPT. Nevertheless, an average annual growth of 12% can be seen per year.
Comparison to all publications on Scopus
Methodology:
- Search on www.scopus.com
- Search within “All fields”
- Search documents containing: “a”.
Every year, a new maximum is achieved! Never have there been more papers published on WPT than now. But is this significant? Indeed, the total number of publications rises each year. Never have there been as many papers published on *any* subject than today. So, let us compare to “all” Scopus papers.1).
We notice an average annual growth of 6% of published papers per year in the last two decades. Thus, our conclusion that wireless power transfer research is booming, is valid.
