Nsk Corporation

Nsk Steering & Control, Inc.

Akio Maruhashi

Provided are an electric drive device and an electric power steering device that reduce noise superimposed on a detection value detected by a current detection element in a path from the current detection element to a control circuit. The electric drive device includes a motor and an electronic control device including a circuit board. With a position on an extension line in an axial direction of a shaft as a reference position, a mounting area for a first motor driver circuit, a mounting area for a first current detection element, a mounting area for a plurality of drive elements of a first inverter circuit, and a disposition area for a first coil wiring are disposed in this order from the reference position to one side in a first direction.

Electric drive device and electric power steering device

A motor control device includes temperature detection elements that are mounted on a circuit board on which a first power conversion circuit and a second power conversion circuit are mounted and are arranged at a position between the first power conversion circuit and the second power conversion circuit.

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Tokyo, Japan

Akio Maruhashi