A phase converter using shading coil effect

In this paper, we propose a new type of phase converter that has a new conf iguration with a core, shading ring, a single-phase ac winding and two outp ut windings. The induced voltages in the output windings are proportional t o the fluxes that link the windings and are similar in principle to those o f in a transformer. But the phase angle between the induced voltages is not equal as the flux that links each output winding is not equal due to a sha ding effect which makes the lag. By setting the proper shading ring, 2-phas e and 3-phase output voltages are obtained from the single-phase source. Th is new type of converter makes the induced voltages with good sine waveform because it does not contain switching elements and is not based on ferro-r esonance, Experimental results show the effectiveness of the proposed struc ture.