Harmonic analysis of the magnetic frequency tripler

A magnetic frequency tripler is a nonlinear magnetic system which is used for the production of triple-frequency output from a 3-phase fundamental frequency source. Although triplers have been used extensively for certain applications, the design of these devices has until now been largely empirical. Earlier papers1,2 have presented limited analyses of magnetic frequency-tripling devices and the authors have previously reported on an equivalent-circuit approach to the analysis and design of these devices.3 This latter approach was still partly empirical in that the parameters from which the equivalent circuit was derived had to be determined experimentally.