| 摘要 |
PROBLEM TO BE SOLVED: To quickly change the speed of an electric motor, a blower in a boiler, and a water supply pump. SOLUTION: In the method for controlling the speed of a plurality of electric motors by an inverter device 14, when the speed of a specific electric motor is to be changed, the operation of other electric motors is incidentally controlled. Also, in the boiler 23 having the blower 26 and water supply pump 31, the speed of the blower 26 and water supply pump 31 are controlled by the inverter device 14. In this case, when the speed of one of the blower 26 and water supply pump 31 is changed, the operation of the other is incidentally controlled. |
