EPFL researchers have developed a compact and efficient medium-frequency transformer. Their device is poised to enhance the flexibility and efficiency of tomorrow's smart grids and DC power distribution networks. An EPFL-made prototype has been thoroughly tested and presented in several tutorials designed for experts from the academic and industrial worlds. For more than 100 years, electricity grids around the world have worked with alternating current (AC). However, direct current (DC) is now back in fashion and - thanks to advances in power electronics - is already becoming the new norm. Today, most of our appliances such as computers, LEDs and electric cars all run on DC. Batteries and photovoltaic panels also produce DC current.
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