Patent ID: 9337764
Filing Date: 2016-05-10
CPC Classification: B02C,H02P

Claim Text:
1. A drive control device for controlling drive of an electrical apparatus, which includes a rotor provided on a rotating shaft rotated by an electric motor driven by an inverter for converting a frequency of an AC power supply, comprising: a physical amount detection unit for detecting a plurality of physical amounts pertaining to an output of the electric motor; a storage unit for storing threshold values for the physical amounts; a rotational frequency determination unit for determining whether or not a rotational frequency of the electric motor is equal to or greater than a base rotational frequency; a selection unit for selecting a threshold value for each of the physical amounts in accordance with a determination result obtained by the rotational frequency determination unit; and a control unit for controlling a rotational frequency of the rotating shaft in accordance with a magnitude relationship between a physical amount detected by the physical amount detection unit and a threshold value selected by the selection unit; wherein: