2022 年 30 巻 2 号 p. 124-129
This paper describes the application of a push-pull class-E amplifier to a transcutaneous energy transmission system for a totally implantable artificial heart using two-wire Archimedean spiral coil. To reduce the number of rectifier components in the power receiving circuit, the shape of the power receiving transformer was proposed. The calculations indicated that the power transmission efficiency including that of the power receiving circuit was increased, and the number of components in the power receiving circuit was reduced. In addition, the simulations indicated that the push-pull class-E amplifiers were able to obtain higher power than the general class-E amplifiers and supply sufficient power even when the input power supply voltage or load fluctuation occurs, by designing the amplifiers properly to fulfill the class-E operating conditions.
