| 摘要 |
PROBLEM TO BE SOLVED: To provide a system of controlling induction electric motor capable of flux weakening control even without a magnetic flux controller.SOLUTION: A system of controlling an induction electric motor comprises: an input unit 303 configured to receive a command speed Wfor operating an induction electric motor at a high speed equal to or greater than a preset speed; a command voltage output unit configured to generate a command voltage for operating an inverter 104 on the basis of the command speed Wand output it to the inverter 104; a control unit 301 configured to control the command voltage output unit such that the command voltage output to the inverter 104 is compared with a preset operation limiting voltage and correct the command voltage to fall within the operation limiting voltage, depending on a result of the comparison; and the inverter 104 configured to control the induction electric motor at the high speed depending on the corrected command voltage.SELECTED DRAWING: Figure 3 |
