| 摘要 |
PURPOSE:To realize adjustment and control through the proportional position action (P action) and integral control action (I action) of stable load currents without being throubled by zero-phase currents appearing at polyphase load currents. CONSTITUTION:Regulators 11a-11c with P action are used as each three-phase current regulator, three-phase currents are controlled by means of these regulators while the current command value of three-phase quantity and actual value are arithmetically operated by means of coordinate transducers 13a, 13b and alpha axis and beta axis couurent components containing no zero phase section are computed, regulators 12a, 12b with I action are used for these components, and the currents of two phase are controlled. The output e *, e * of each regulator 12a, 12b with I action is reversely converted by means of a two phase/ three phase coordinate transducer 14, output ea2*-ec2* obtained from the results and each output ea1- ec1* of the regulators 11a-11c with P action are each added, and voltage command value ea*, ec* is acquired. |
