| 摘要 |
PURPOSE:To enable automatic transfer of a plurality of motor-generators into parallel operating state, by automatically determining the starting sequence between the plurality of motor-generators and arranging throw-in conditions for parallel operation. CONSTITUTION:Start sequence determining devices C11, C21 receive an external start signal A simultaneously and start process for determining start sequence. The start sequence determining devices C11, C21 determine the start sequences of motor-generators MG1, MG2. Synchronous throw-in timing devices C13, C23 predict in-phase timing based on variation of phase difference between output voltages of the motor-generators MG1, MG2 and operate output switches K12, K22. The phase difference between the output voltages from the motor-generators MG1, MG2 is varied through switch groups K1x, K2x for switching excitation wiring. |
