| 摘要 |
PURPOSE:To make the stepped interval of phase command as short as possible and to obtain a sine wave output current from an inverter as quick as possible. CONSTITUTION:Upon turn ON of power, an absolute position detecting means 15 produces a rough phase command at first. At a time point when the detection output of the absolute position detecting means 15 makes an initial variation, a relative position detecting means 16 outputs a correct phase command. Consequently, output current of an inverter 23 immediately becomes sinusoidal for each phase resulting in suppression of ripple and the like. |
