| 摘要 |
PURPOSE:To enable to control a vector without detecting a PWM voltage by calculating the vector of a PWM voltage command to form a control signal, and supplying it to a PWM inverter to control the vector. CONSTITUTION:By aiming at the fact that a torque component current and an exciting component current are respectively controlled to be calculated by calculators 33, 34 to become command values and the current control calculation results become Ed*, Eq*, which are controlled to coincide with the actually detected values, Ed, Eq, the values Ed*, Eq* are used as correcting amounts instead of the Ed, Eq detected from the PWM voltage. Thus, the very short sampling time control necessary to detect the Ed, Eq from the PWM voltage can be eliminated to be preferable for the total digital control of a microcomputer or the like. |
