A General Purpose Method for Electric and Magnetic Combined Problems for 2D, Axisymmetric and Transient Systems

Summary from only given, as follows. The non-linear analysis of electrical devices is often limited by the complexity of the power supply. In effect, in the case of solid conductors, the voltage is required, while in the case of stranded conductors the current must be known. These restrictions are due to the nature of the field equations. A new formulation is proposed which allows the possibility to choose the power supply and choose any kind of connection between components. Two types of ´magnetic conductors´ are considered: solid conductors, in which eddy current be induced and stranded conductors without eddy current. An equation combining the magnetic potential, the current and the voltage is established for each conductor. This equation is introduced into a conventional circuit analysis method. The magnetic field and circuit equations can be solved simultaneously in the resulting system. An implicit method is used to dicretize the equations in time. A Newson-Raphson linearization algorithm is used to handle problems that include materials with non-linear properties. This formulation is used in the commercial program FLUX2D. To illustrate one of the many applications, an A.C. electromagnet is studied.