Acceleration of the Steady-State Computation of Dry Submersible Induction Machines in the Time-Stepping Finite Element Analysis

Time-stepping finite element analysis (TS-FEA) can provide very accurate numerical results that describe the steady-state performance of the dry submersible induction machine (DSIM). The main drawback of the simulation is the excessive time consumption in the transient process calculation. Therefore, aiming at this problem, this paper proposed two methods to accelerate the steady-state computation of the DSIM in the TS-FEA: The synchronous-speed startup method and the TH solution startup method. The simulation results show that both methods can significantly reduce the starting transient of the DSIM under applied load torque. Besides, the proposed methods are still efficient in multi-load simulations, which satisfies the request by the industrial design for a fast and accurate performance prediction of the DSIM.