| 摘要 |
PURPOSE:To perform starting certainly in a short time by heightening the voltage of synchronous operation over multiple steps, and by making the voltage in stable synchronous operation. CONSTITUTION:At starting, by a start controller 6, synchronous operation with first low constant voltage is specified to a position detecting rotation controller 5. Synchronous voltage is low, and so a magnet rotor 4 starts rotating however great inertia moment may be. Then, initial rotation is obtained and after that, by a start controller 6, voltage is increased in order from the first voltage to a second voltage. Then, the magnet rotor 4 is accelerated according to the increment of the voltage. On a step for stabilizing the synchronous operation with the second voltage, the input of voltage signal generated from an armature winding 3, to a switch element group 1 is provided, and steady-state synchronous-operation is started. |
