Compact chargers the solution for computers and mobiles
In the future, you may not have to carry bulky chargers for your computer and your mobile. Now the first isolated voltage converter operating at more than 3 MHz with sufficiently high efficiency is developed at Mid Sweden University. Commercial solutions today operate at less than 150 kHz, and a higher frequency would make it possible to produce more compact chargers.
Hopefully, the voltage converter can be built into electronic devices in the future so we don't have to go around carrying a charger, says Kent Bertilsson, researcher at the research centre Sensible Things that Communicate, STC, at Mid Sweden University.
The development in the electronics industry is towards compact and efficient products, and since 2009 Kent Bertilsson has been the project manager of the research project "Research development of high-frequency power supply" within STC.
One of the results is a voltage converter operating at more than 3 MHz with sufficiently high efficiency for electronic devices. This frequency is higher that the commercial solutions on the market today, which means that the voltage converter can be built into electronic devices or hidden in a wall-plug.
- Compact power supply is also about creating a more efficient voltage converter that uses less energy, which is also an environmental benefit, says Kent Bertilsson.
An application for a patent for the voltage converter has been filed for the US and for Europe and now Kent Bertilsson is looking for new research funds to be able to continue the research and the development of the next generation of compact and efficient voltage converters.
- We are quite open and we will see what our efforts will lead to, says Kent Bertilsson who is also the programme manager of the Electric power engineering programme that started at Mid Sweden University in 2011.
The project has had a positive impact on the business of the region and several partnerships with companies in the region have been established. In addition, new contacts have been established, both national and international, with companies and universities, which have resulted in the development of new products.
Research in power electronics was new at Mid Sweden University when the project started, today it has grown and now the university runs well-established research in high-frequency switching power supply.
- It has been positive to see both that the interest in power electronics proved to be this great and the fact that the industry is interested in the competence we are developing here at Mid Sweden University, says Kent Bertilsson.