高温超导线饼电感的数值计算方法研究

The research of algorithm analysis for inductance of HTS pancakes

随着高温超导材料技术的进步,高温超导磁体的研究也成为研究的重点对象。鉴于其零电阻、高电流密度等相对于常规导体磁体所不具备的优点,高温超导磁体在电力工业中储能系统、电机、变压器、限流器等电气装置中也有重要的应用意义。饼绕超导磁体的核心即超导线圈绕制而成的线饼,而超导磁储能系统的动态过程则是围绕着磁体的电感充电与放电开展,因此对高温超导磁体内部线饼的电感及互感耦合的分析显得极为重要。文中在单个线饼的基础上,首先介绍了高温超导线饼的结构,提出计算线饼自感及互感参数的若干数值算法及有限元仿真方法,并结合实际测量数值,对高温超导线饼自感及互感参数进行了对比分析;接着对低温相比常温下线饼电感数值下降的情况进行了简单的原因分析。

With the progress of HTS （high temperature superconducting） material technology, the HTS magnet research has become the focus of the research object. Given its good quality such as zero resistance, high current density, HTS magnet has the advantages of important application significance in the power industry, electric motors, transformers and current limiting device. The core of superconducting magnet is the superconducting coil winding, and the dynamic process for superconducting magnetic energy storage system is charging and discharging, so the inductance and mutual inductance coupling analysis is very important for HTS magnet. Based on HTS single pancake, inductance and mutual inductance results by several algorithms and measurement values were presented and analyzed, the reason of decreasing inductance value for HTS pancake in low temperature was also analyzed.