Experiment of transcutaneous energy transmission system for heart pump
1.Institute of Biomedical Engineering, Jiangsu University, Zhenjiang, Jiangsu 212013, China; 2. School of Electrical and Information Engineering, Jiangsu University, Zhenjiang, Jiangsu 212013, China
Abstract：Most power supply of artificial heart was provided by wire across skin, which might cause infection and was inconvenient to patient daily life. To solve this problem, based on electromagnetic induction, a transcutaneous energy transmission system was designed to transfer power by non-contact coupling. Wireless energy transmission efficiency of artificial heart implemented in human body was realized by the proposed system. The effects of transformer secondary windings coil, switching frequency and transformer air gap size on the system were investigated by experiments. The results show that the transformer has best performance with primary coil of 30 circles and secondary coils of 60 circles. When frequency reaches 40 kHz, the system has maximum transmission efficiency. The transmission efficiency decreases with the increase of gap size. The efficiency is 60％ to 80％ in the air gap range of 0-3 mm, while it decreases obviously for the air gap over 3 mm.
2012, Vol. 33 
