Abstract The relation between starting inrush current and parameter, and the first-halfwave of inrush current related to initial trigger angle are researched. Firstly, the rotative equation of the three phase induction motor at αβ0 coordination is presented. Then the rotative equation of inside delta connection three phase induction with single-phase switched on is analyzed in order to get analytic solution of stator current by Laplace transformation at the time of locked rotor. Finally, numerical simulation of M language compiled by Matlab is compared with analytic solution, which confirms the validity of the analytic solution. Form these data, the initial trigger angles of the best first-halfwave are extracted based on analysis of initial trigger angle of soft starting of three-phase induction. so it is very important to reduce inrush current of the first-halfwave.
Wu Ling. Analysis of Inrush Current of Inside Delta Connection Induction Machine with Single-Phase Switched on at the Time of Locked Rotor[J]. Electrical Engineering, 2015, 16(10): 17-20.
2015, Vol. 16 
