Title :
A new control method depending on primary phase angle of transcutaneous energy transmission system for artificial heart
Author :
Miura, Hidekazu ; Saito, Ichitaro ; Sato, Fumiaki ; Shiraishi, Yasuyuki ; Yambe, Tomoyuki ; Matsuki, H.
Author_Institution :
Inst. of Dev., Tohoku Univ., Sendai, Japan
Abstract :
A new control method for stabilizing output voltage of the transcutaneous energy transmission system for artificial heart is proposed. This method is primary side, is outside of the body, which is not depending on a signal transmission system from the implanted device. The impedance observed from primary side changes from inductive to capacitive and the output voltage decreases drastically when the output current is large and the coupling factor is higher than that of the optimal condition. In this case, the driving frequency should be changed to higher so that the phase angle of the primary impedance is zero degree. The preliminary examination showed that this control method can enhance the output voltage limit to twice and the feasibility of the primary side control.
Keywords :
artificial organs; bioelectric potentials; electric impedance; artificial heart; capacitive voltage; coupling factor; inductive voltage; output current; output voltage stabilizing; primary impedance; primary phase angle; primary side control; transcutaneous energy transmission system; Coils; Couplings; Educational institutions; Frequency control; Heart; Magnetic cores; Voltage control;
Conference_Titel :
Engineering in Medicine and Biology Society (EMBC), 2013 35th Annual International Conference of the IEEE
Conference_Location :
Osaka
DOI :
10.1109/EMBC.2013.6610850
