基于分布参数磁路模型的永磁接触器吸力特性

发布时间：2018-04-12 12:18

  本文选题：永磁 + 接触器　； 参考：《电工技术学报》2014年07期

【摘要】：针对永磁体集总参数磁路模型求解永磁接触器吸力特性存在计算精度较低的问题,提出了根据永磁体内磁通密度分布情况,将永磁体沿磁化方向和垂直于磁化方向按整体磁通密度相对误差最小的分块方法,构建永磁体分布参数接触器等效磁路模型。对所研究的永磁接触器等效磁路进行求解,获得接触器静态吸力特性计算值,在此基础上进一步求出静态吸力特性曲线簇,结合静态线圈磁链曲线簇对永磁接触器的动态微分方程组进行求解,得到动态吸力特性。吸力计算值与实测值相比有较好的一致性,且静态和动态吸力值相对误差分别在8%和10%以内,表明了采用永磁体分布参数的接触器系统磁路模型求解吸力特性这一方法的正确性和有效性,为永磁接触器设计和优化分析提供了一种有效的手段。
[Abstract]:According to the permanent magnet lumped parameter calculation of the low precision problem of solving the suction characteristics of the magnetic circuit model of permanent magnet contactor, put forward according to the distribution of the magnetic flux density in the permanent magnet, permanent magnet along the direction of magnetization and vertical flux density according to the overall relative error block method in minimum magnetization direction, permanent magnet contactor distribution parameters equivalent circuit model construction. To solve the equivalent magnetic circuit of permanent magnet contactor, the calculated value obtained static force characteristic of contactor, based on the calculated static characteristic curves, combined with the static magnetic coil chain curves of permanent magnet contactor dynamic differential equations, the dynamic characteristic of suction suction. Calculated values are consistent better compared with the measured values, and the static and dynamic force value of relative errors are within 8% and 10%, that the permanent magnet is connected with the distribution parameters The magnetic circuit model of the touch system is correct and effective for solving the suction characteristics. It provides an effective means for the design and optimization of the permanent magnet contactor.

【作者单位】： 福州大学电气工程与自动化学院;
【基金】：福建省自然科学基金资助项目(2011J01293)
【分类号】：TM572

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