| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an invertor controller preventing a component from being damaged due to a sudden change of DC voltage and achieving stable torque control in a brushless DC motor controller. <P>SOLUTION: A DC voltage detecting means 11 detects a MAX value and a MIN value of DC voltage. A torque gain setting means 12 is provided to set a torque gain so that the detected value does not exceed a voltage calculated from the breakdown voltage of an electrolytic capacitor and so that it exceeds a voltage calculated from a low voltage protection level of power IC and fan motor drive IC. <P>COPYRIGHT: (C)2009,JPO&INPIT |
