| 摘要 |
PURPOSE:To enhance the stability of a control system by providing a function generator which outputs the prescribed control angle deviation for a target current value, and advancing a control angle on the basis of the output of the generator at reflowing time in a current intermittent operation to fire it. CONSTITUTION:A power converter has a power reactor 1, an inverter 2 and a current smoothing reactor 4, and drives a motor 3. A function generator which outputs the prescribed control angle deviation for a target current value is provided, and advances the value produced by subtracting the initial control angle of the reactor 1 from the control angle immediately before pulse shifting operation by a control angle deviation obtained through the generator, i.e., the control angle to fire it. |
