Murata has announced an HPHF (high power, high frequency) transformer technology that uses a proprietary winding technique, allowing designers to “efficiently reach power and frequency levels that were never possible with conventional winding methods”, the firm says.
Murata’s patented pdqb winding technology makes it possible to construct high frequency transformers of up to and over 400 kW that can operate at frequencies up to 50 kHz. The pdqb winding technique overcomes the skin and proximity effects as well as other high frequency losses associated with conventional construction methods, delivering a >99.5 % efficient solution. Murata is able to design custom HPHF transformers operating around 4-50 kHz with power ratings from 30 kW to 400 kW. The transformers can be designed with turns ratios from 1:1 to 10:1 having multiple secondary windings if desired, and are capable of handling input and output voltages in the range 50 V to 1 kV. Commenting on the release, Andrea Polti, global product manager, Murata said “The HPHF solution really showcases a technology capability that allows us at Murata to provide customized solutions to meet or exceed specific customer requirements.”
Source: Electronics Weekly