| 摘要 |
PURPOSE:To effect high performance control without any speed detector, by providing a flux detecting voltage model operator, a speed operating circuit and an angle operating circuit additionally. CONSTITUTION:A vector control circuit, employing a current model system flux operator 10, is provided with a voltage model system flux operator 18, angle operating circuits 30, 31 and a speed operating circuit 16. The angle operating circuit 31 operates the commanding value beta' of an angle between a current vector and a flux vector. The angle operating circuit 30 operates the real value beta of an angle between the current vector and the flux vector by the real value (iT) of a torque current and the real value (iM) of a magnetizing current, which are detected correctly by a voltage model. These values are added in an adding point 17 and, thereafter, the result of adding is inputted into a speed regulator 5 through the speed operating circuit 16 as the real value of speed. |
