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Research from Frost and Sullivan on ‘Wireless Power Supplies and Contactless Energy Transfer’ says induction-based wireless power could represent the next wave in powering portable electronics.

It could also enable new applications in other sectors such as healthcare for powering implants to increase patient convenience and quality of life.

Wireless power has tremendous potential in various industries including consumer electronics, automotive and process control.

The power and energy industry is investing substantially in research on large-scale wireless energy transfer, as space-based solar power systems are attracting attention as an alternative form of energy to meet demands in the long term.

If adopted, this technology will facilitate the use of all electrical devices, which is a highly sought-after purchase factor when choosing mobile phones or laptops.

‘Moreover, natural deposits such as coal and petroleum are rapidly depleting, and one day, alternative energy sources will be needed,’ said Technical Insights research analysts Sharmishta S and Agata Jozwicka.

‘If Earth-based natural energy sources will not satisfy the world’s energy needs, space solar power systems could become the only alternative.’ As the home automation trend is catching on, several companies have developed wireless power technologies such as charging pads for use in homes and offices to power personal electronic devices.

Meanwhile, universities are researching ways to improve efficiency over longer ranges.

Wireless power transfer is highly efficient over short distances; however, there tends to be substantial power losses when the transfer distance increases.

In the case of power-hungry devices such as industry machines or even laptops, the transfer should be efficient enough to enable rapid recharging and should not interfere with the continuous working of the device during the recharge.

Even wired chargers are not considered completely reliable since they heat up while charging, dissipating energy through heat.

To quell such consumer apprehensions and increase customer acceptance of the technology, scientists are studying techniques such as resonant induction, microwaves and lasers, although currently, these methods limit the amount of power that can be transmitted.

‘The other problem here is that some of such devices are often large and so, there has to be trade-offs among the size of the devices, the proximity between the transmitter and receiver, and the amount of power to be used to recharge the device,’ said Jozwicka.

‘There is a need for complementary electronics capable of working at higher frequencies to improve the efficiency of the wireless power transfer.’ Even if all these performance requirements are met, potential users will still be wary about the safety of wireless energy transfer.

‘This challenge is especially pertinent for personal and household devices, where the users are concerned about the impact of electromagnetic field, microwaves, or even radio waves on their health,’ added Sharmishta.

‘In order to accelerate the adoption of this disruptive technology in a conservative end-user market, it must be ensured that energy transfer technologies operate within regulation norms.’ Technology developers can provide an important breakthrough in terms of widespread use in the consumer electronics segment through collaborations and agreements with original equipment manufacturers (OEMs) in incorporating a unified charging scheme across a range of products.

In order to calm the fears of end users and expand the user base in the future, industry participants could also consider energy transfer with space solar power systems and lobby for international cooperation between governments.

Wireless Power Supplies and Contactless Energy Transfer, a part of the F+S Technical Insights subscription, provides a technology overview and outlook for wireless energy transfer systems.

The study provides insights into technologies such as electromagnetic induction, microwave, lasers and resonance that can aid energy transmission wirelessly, to power devices used in home, offices and industries.

This research service includes detailed technology analysis and industry trends evaluated following extensive interviews with market participants.

Technical Insights is an international technology analysis business that produces a variety of technical news alerts, newsletters and research services.

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