| 摘要 |
PURPOSE:To economically operate motors by dividing the motors into groups, providing the primary frequency controllers for the respective groups, mounting overcurrent joint controllers in the respective motors and controlling them at the rotating speeds. CONSTITUTION:The rotating speeds of individual motors of a motor assembly in which the motors are provided in parallel are largely controlled first by the primary frequency controller Vi to match the maximum speed of them and the individual motors Mij are controlled by overcurrent joint controller Uij. Thus, the expensive primary frequency controllers are not necessarily provided at every motors, thereby considerably saving the energy. |
