A drive device includes a motor having a rotor rotatable about a motor axis, a motor housing accommodating the motor, an inverter housing accommodating an inverter electrically connected to the motor, and a gear housing accommodating a gear portion. The inverter housing opens upwardly and is arranged beside the motor housing in a direction intersecting the motor axis. The inverter housing has a bottom wall, and first through fourth side walls extending upward from the bottom wall and surrounding the bottom wall. The first and second side walls face each other, and the third and fourth side walls face each other. The inverter housing includes a first rib extending upward from the bottom wall and connecting the first side wall and the second side wall, and a second rib extending upward from the bottom wall and connecting the third side wall and the fourth side wall.

A core disc or a laminated core having at least two core discs for a rotor of an electric motor may include an inner lateral surface and at least one radial recess for receiving adhesive arranged on the inner lateral surface.

Disclosed herein is a controller-integrated driving motor module. The controller-integrated driving motor module includes: a motor; a motor housing configured such that the motor is accommodated therein; a power transmission unit connected to the motor, and configured to transmit a rotational force of the motor to each part of a power seat for the movement of the power seat disposed in a vehicle; and a controller disposed between the motor and the power transmission unit, and configured to control the rotation of the motor. The controller includes a MCU configured to control the rotation of the motor, an inverter configured to receive a driving signal from the controller and drive the motor, and a power supply unit configured to receive power from the battery of the vehicle and provide the power to the controller.

An electric powertrain system includes an electric machine having a rotor and stator. The stator has multiple phase legs, each respective one of which includes a single phase lead connected to two or more parallel stator windings. The stator thus has multiple phase leads collectively conducting phase currents. A rotary output member is connected to the rotor and connectable to a load. A traction power inverter module (TPIM) is electrically connected to the phase legs. Current sensors collectively measure the phase currents. Each respective current sensor is connected to a different phase lead. A controller in communication with the current sensors and the TPIM, in response to a commanded current and the measured phase currents, detects a threshold variation in the measured phase currents indicative of a phase current imbalance fault, and selectively changes a thermodynamic state of the electrified powertrain in response to the fault.

A motor includes a stator and a rotor, the rotor includes a frame coupled to a rotation shaft and a magnet fixed to the frame, with a direction from the stator toward the rotor as a first direction, the magnet includes a plurality of lower part main pole magnets having a magnetization direction in the first direction and pluralities of lower part second rightward sub-magnets and lower part second leftward sub-magnets having a magnetization direction in a direction different from the first direction, the lower part main pole magnet includes a lower part first upward main magnet placed at a negative side in the first direction and a lower part second upward main magnet fixed to the frame, when the magnet is seen along the first direction, the lower part first upward main magnet and the lower part second rightward sub-magnet and lower part second leftward sub-magnet partially overlap.

An electric device has a driveshaft with at least one stator cylinder positioned between opposing, curvilinear shaped cams mounted on the driveshaft, where the center axis of the stator cylinder is parallel with but spaced apart from the driveshaft axis. A magnet assembly is disposed in each end of the stator cylinder, with one magnet assembly engaging one cam and the other magnet assembly engaging the other cam. Each magnet assembly includes a cam follower that can move along a curvilinear shaped cam. A magnet slide arm attached to the cam reciprocates magnets carried on the magnet slide arm through electromagnetic windings disposed around the stator cylinder. An electrical input delivered to the windings can reciprocate the arm, driving the cams to rotate the driveshaft. Alternatively, rotation of the driveshaft can be used to reciprocate the arm to induce electric current in the windings.

Various methods and systems are provided for controlling air flow through an engine by adjusting an electric turbocharger of a vehicle. In one embodiment, a system for a vehicle comprises an electric turbocharger comprising a compressor, an exhaust turbine coupled to the compressor via a shaft, and an electric machine mechanically coupled to the shaft; and a controller including a processor and instructions stored on a non-transient memory of the controller that, when executed, cause the controller to: adjust an amount of power provided to or extracted from the shaft by the electric machine based on at least one of a speed of the electric turbocharger, a cylinder pressure, and an exhaust gas temperature. By adjusting the amount of power provided to or extracted from the electric machine, the exhaust gas temperature and the speed of the electric turbocharger may be efficiently maintained within a desired operating range.

A magnetic motor apparatus includes a motor housing, rotor element, rotatable urging elements and locking mechanism. The rotor element has an inner and outer rotor element, both including a plurality of permanent arc magnets arranged concentrically. The inner and outer rotor element are rotatable around an axis of rotation. The rotor element includes a plurality of shielding elements arranged in a third circle concentrically around the outer rotor element. An output shaft, rotatable with the rotor element, extends along the central axis of rotation and partly out the housing. The urging elements are arranged in a fourth circle concentrically around the rotor element. Each rotatable urging element includes a permanent magnet having poles, and is rotatable around a peripheral axis, such that each pole of the rotatable urging element in-use alternatingly faces the rotor element to impart an urging force. The locking mechanism controls rotation of the urging elements.

Kickback control methods for power tools. One power tool includes a movement sensor configured to measure an angular velocity of the housing of the power tool about the rotational axis. The power tool includes an electronic processor coupled to the switching network and the movement sensor and configured to implement kickback control of the power tool. To implement the kickback control, the electronic processor is configured to control the switching network to drive the brushless DC motor, receive measurements of the angular velocity of the housing of the power tool from the movement sensor, determine that a plurality of the measurements of the angular velocity of the housing of the power tool exceed a rotation speed threshold, and control the switching network to cease driving of the brushless DC motor in response to determining that the plurality of the measurements of the angular velocity exceed the rotation speed threshold.

A steering device according to one aspect of the disclosure includes: a speed reducer configured to decelerate a rotational power input from one surface side while increasing a torque and output rotation from an output section disposed on the other surface side; a motor provided on the one surface side and configured to input the rotational power to the speed reducer; and a control device for controlling the motor. The motor includes a rotor for generating the rotational power. The rotor includes a rotor output shaft disposed coaxially with an output axis of the output section. The motor inputs the rotational power from one end side of the rotor output shaft to the speed reducer. The control device is disposed on the other end side of the rotor output shaft coaxially with the rotor output shaft and includes a sensing unit for sensing rotation of the rotor.