ANALYSIS OF TRANSIENT MAGNETIC-FIELDS COUPLED TO MECHANICAL MOTION IN SOLENOIDAL ELECTROMAGNET EXCITED BY VOLTAGE SOURCE

A new method is proposed in present work for calculating the transient axisymmetrical or 2D magnetic fields, coupled with mechanical motion, excited by voltage source in the solenoidal electromagnet. This method on the basis of a new model, we called it differential-integral equation, was set up. Naturally, the solution on the equation results in the couple of finite element method with integral equation method. It seems the advantages of present method to directly solve the transient magnetic field, coupled with mechanical motion, excited by voltage source, to make the calculating process easy, and to take into account the effect of the eddy currents and nonlinearity in the magnetic materials. The good agreement between the calculation and the test results indicated that the method proposed is satisfactory.