【摘要】 本文推导出了以磁感应强度为求解量的非线性涡流场方程及其有限元方程。采用电流耦合法得到了电压源激励下通用形式的非线性时步有限元方程。在有限元方程的推导中，提出了一种解决非均匀媒质间相对运动的新方法。利用所得方程对一台笼式圆筒型直线感应电机的瞬态特性进行了计算与试验分析。文中还对电机初、次级初始相对位置的变化以及电压初相角的变化对瞬态特性的影响进行了研究分析。更多还原

【Abstract】 A nonlinear eddy current field equation with magnetic induction as unknown variable is studied. By using a currnet coupled technique, nonlinear general time-stepping finite element equations for constant voltage excitation are derived. A new method taking into account the effect of relative motion between inhomogeneous media is developed. They are used to calculate transient performance of a cylindrical linear induction motor with spuirrel-cage secondary at different starting phase angles of applied voltage for different starting positions of the secondary relative to the primary. Calculated values are in agreement with test results.更多还原