A new structure transcutaneous transformer for artificial heart system

A new geometrical design of transcutaneous transformer for artificial heart system is presented in this paper. The primary and secondary cores are mad e of ferrite and amorphous magnetic materials respectively. The experimenta l results indicate that it is possible to transmit an electrical power of 2 0 W which is sufficient to drive the heart pump. With a gap of Smm between the coils, its transmission efficiency with the inverter can be up to 90% w ith a switching frequency 102.5kHz. Some characteristics of the proposed tr ansformer are also shown and discussed in this paper.