Performance and analysis of an advanced type magnetic frequency tripler with three three-legged cores

A new magnetic frequency tripler employing three 3-legged transformers connected in delta is proposed. The device has very little input current distortion and which only changes very little with the fluctuations of the input voltage and the load. In addition, the volume of iron and copper is about the same as in traditional star-connected circuit. Properties of a three-legged transformer and tripler are shown with and without filters. Fundamental analysis based on single-phase equivalent circuit is conducted. Results of experiments and analysis show improved performance of the new tripler.