The current control apparatus includes a component temperature estimating unit configured to estimate component temperatures of plural electronic components, respectively, based on a current value flowing to each of the plural electronic components included in a current control circuit and a detected temperature detected by a temperature detecting element disposed in the vicinity of the current control circuit, and limits output current outputted from the current control circuit to a load based on the estimated component temperature. The component temperature estimating unit estimates power loss of the electronic component and estimates the component temperature based on a sum of a first value obtained by filtering the power loss through plural first low-pass filters connected in parallel or in series with each other and a second value obtained by filtering the detected temperature detected by a temperature detection circuit through a second low-pass filter.
CURRENT CONTROL DEVICE, MOTOR CONTROL DEVICE, AND ELECTRIC POWER STEERING DEVICE
19.06.2025
Patent
Elektronische Ressource
Englisch
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