【摘要】 以经皮传能理论为依托,在罐型经皮变压器的基础上利用有限元的磁路耦合功能,计算经皮变压器各部分的体积生热率;通过流体场、固体场和温度场的耦合,对经皮变压器进行温度场分析,得到次级铁芯温升值随气隙、轴向错位和负载功率的变化情况,其最高温升值为0.3度,处于人体的自我调温能力的控制范围以内;提出通过监测次级铁芯温度的变化来稳定负载功率的方法,使人工心脏吸收功率稳定在16W左右,满足了人工心脏的功率要求.为人工心脏经皮传能系统的安全和稳定运行提供了一定的参考价值.更多还原

【Abstract】 Based on the theory of transcutaneous energy transmission(TET), the volume heat production in each part of transcutaneous transformer is calculated when the magnetic circuit coupling finite element is used on the pot core transcutaneous transformer. With the use of the coupled fluid field, solid field and temperature field, temperature field is analyzed to obtain the changing situation of the secondary core temperature rising with the air gap, the axial displacement and load power. And the maximum temperature rises up to 0.3 degrees within the range of the automatic temperature control ability of the human body. Thus, the method that monitors temperature changes in the secondary to stabilize load power is put forward. In this way, the absorbing power of the artificial heart is stabilized to 16 W or so, which meets the power requirement of the artificial heart. This study helps to achieve safe and sound operation of transcutaneous energy transmission system of the artificial heart.更多还原