Abstract: The present document describes a wheel assembly defining a motor/generator. The wheel assembly comprises a plurality of stator units coaxially provided within a rotor. The stator units comprise a plurality of spokes co-centrically provided around a hub/shaft and a coil provided around at least a portion of the spokes for generating an electrical field. The rotor comprises a plurality of magnets provided on an inner periphery of the rotor facing the spokes. The rotor is rotatably attached to the hub/shaft of the stator for rotating around the stator units when the coils are activated. The coils and/or the stator units may be selectively activated and deactivated to avoid overheating.

Abstract: [Problem] An object of the present invention is to provide a control apparatus for an electric power steering apparatus that improves ripple accuracy of a torque, a velocity and so on, does not generate abnormal noises and does not generate an uncomfortable feeling with respect to a steering by compensating each-phase characteristics of a motor and the control apparatus and converting into a desired characteristic, and at the same time conforming each-phase characteristics.

Abstract: An estimating method for a rotor position of a motor and an estimating device for the same are disclosed herein. The estimating method includes injecting a first high frequency signal to the motor at a first estimating angle, generating a first sensing signal of the motor in a period when the first high frequency signal is injected to the motor, injecting a second high frequency signal to the motor at a second estimating angle, generating a second sensing signal of the motor in a period when the second high frequency signal is injected to the motor, determining a quadrant of an operating angle according to the first sensing signal and the second sensing signal, and acquiring the rotor position according to the first sensing signal, the second sensing signal, and the quadrant of the operating angle.

Abstract: A motor driving device includes a communication path selection unit, to which operation command information for controlling driving of a motor is input in a serial data format or a parallel data format via a common input path, a communication unit which includes a serial interface unit for the serial data format and a parallel interface unit for the parallel data format, and outputs a control signal based on the operation command information input via the communication path selection unit, and a driving control unit which controls driving of the motor based on the control signal. The communication path selection unit selects between outputs path to the serial interface unit and the parallel interface unit, which corresponds to the data format of the input operation command information, and outputs the input operation command information to the serial interface unit or the parallel interface unit through the selected output path.

Abstract: A universal control unit for driving a brushed or a brushless DC motor, such as the type commonly employed in a vehicle fuel pump or other vehicle application. According to exemplary embodiments, a universal control unit includes a processing device and an output stage, and is connected to either a brushed or a brushless DC motor in a manner that accommodates the two different motor types so that a common or universal controller can be used.

Abstract: A motor controller is configured to perform positioning of a rotor of a brushless motor immediately when power supply is turned on, and not after actually receiving a target value related to control for the brushless motor from a main ECU, which determines the target value. The motor controller finishes or is performing the rotor positioning, when the target value is received from the main ECU. For this reason, the motor controller can start rotation control for the brushless motor in accordance with the received target value in a short period of time.

Abstract: Provided is a component for a network system, which includes a communication device for receiving at least energy information, a component driver part driven by supplied energy, and a control part that recognizes high price-related information or low price-related information, based on the energy information received by the communication device and that controls the component driver part. A method of controlling the component driver part when the high price-related information is recognized is different from a method of controlling the component driver part when the low price-related information is recognized.

Abstract: A drive-signal-generating circuit includes: a current-detecting unit to detect a current flowing through a three-phase motor; a calculating unit to calculate d- and q-axis currents based on a detection output of the current detecting unit; a reference-signal-output unit to output a reference signal indicating a first-reference value of the q-axis current for rotating the motor at a target-rotational speed; first- and second-control-signal-output units to output first- and second-control signals corresponding to respective errors between current values of the d- and q-axis currents and a second and the first reference values, respectively; a drive-signal-output unit to output such a drive signal that the d- and q-axis currents reach the second and first reference values, respectively; and an adjusting unit to adjust the detection output so that a ripple of the second-control signal become smaller, after a rotational speed of the motor reaches a predetermined rotational speed corresponding to the target-rotatio

Abstract: A machine tool has a tool retainer for retaining a tool, a motor and a drivetrain which couples the motor with the tool retainer for transmitting a torque. A system pushbutton is coupled with a motor control. When the system pushbutton is activated by a user, the motor control controls the motor in such a way that the motor turns in a first sense of rotation for a duration and then in a sense of rotation opposed to the first sense of rotation. The duration is shorter than 100 ms.

Abstract: A control device for an AC rotating machine includes a voltage command calculation means (1) that calculates voltage commands on rotation two axes and a voltage applying means (2) that applies a voltage to an AC rotating machine (3), based on voltage commands on the rotation two axes outputted by the voltage command calculation means (1); the voltage command calculation means (1) calculates first-axis and second-axis voltage commands on the rotation two axes and reduces the limit value of the second-axis voltage command in proportion to the squared first-axis voltage command.

Abstract: Representative embodiments of a system for braking a cyclically rotating motor upon a power failure include (i) charge-storage circuitry for storing charge and converting the stored charge to an output voltage upon power failure; (ii) one or more passive electrical elements for conducting current induced by motor rotations; and (iii) voltage-actuated circuitry connected to the passive electrical element and the charge-storage circuitry for braking the motor during each half-cycle of motor rotation. The circuitry is inactive until actuated by the charge-storage circuitry upon power failure.

Abstract: A motor control device includes a rectifier, an inverter connected to the rectifier via the DC link, a power failure detecting unit detecting power failure, a voltage detecting unit detecting a DC voltage at the DC link, an electric storage unit storing DC power, a charging unit that can make charging by boosting to a voltage higher than the DC voltage, a discharging unit discharging DC power, a resistance discharge device that performs resistance discharging of DC power at the DC link when the DC voltage after power failure is equal to or higher than a predetermined start level and that does not perform resistance discharging when the DC voltage is equal to or lower than a predetermined stop level, and a discharging operation determining unit operating the discharging unit when the DC voltage at the DC link after power failure is equal to or lower than a predetermined threshold.

Abstract: A control method of a vehicle having a motor according to an exemplary embodiment of the present invention can include confirming that a speed of the motor is not 0 and an output torque thereof is 0 in a condition that the vehicle is being operated, confirming that a voltage of the motor converges to a regular value, and accumulating control data for the motor and processing the control data to calculate an offset value of a resolver. Accordingly, the control method of a vehicle effectively determines whether the offset of the resolver is to be compensated without affecting the drivability of the vehicle.

Abstract: When a vehicle collision is detected, a electric connection between a power supply and an input stage of an inverter is switched to the disconnected condition. Then, when a rotation speed of an alternating current motor is higher than an allowable rotation speed or a terminal voltage of a storage unit provided at the input stage is higher than an allowable terminal voltage, an exciting current command value is set at a value other than zero and a torque current command value is set at zero, and when the rotation speed is equal to or lower than the allowable rotation speed and the terminal voltage is equal to or lower than the allowable terminal voltage, both command values are set at zero. An exciting current component and a torque current component of an alternating current supplied from the inverter to the motor are controlled according to the set command values.

Abstract: In accordance with one embodiment, a machine for generating electrical energy comprises a housing. A rotor has interior blades for rotation in response to receipt of material. The rotor has an outer surface and an inlet. A first magnet assembly is secured to the outer surface of the rotor. A first stator winding is in electromagnetic communication with the corresponding first magnetic assembly, such that if the rotor rotates a first electromagnetic signal energizes the first stator windings based on the flow of material into or through the inlet.

Abstract: A device for recovering electric energy in an AC motor-driven electric vehicle. The device includes a battery, a single-phase or three-phase inverter, a single-phase or three-phase inductor, an AC motor, a rectifier bridge or a second inverter, and a charger. The anode and the cathode of the battery are connected to input ends of the inverter, respectively. An output end of the inverter is connected to the AC motor via a primary coil of the inductor. An output end of a secondary coil of the single-phase or three-phase inductor is connected to an input end of the rectifier bridge or the second inverter. Output ends of the rectifier bridge are connected to the anode and the cathode of the battery, respectively. The charger is connected to the anode and the cathode of the battery for supplying power from an external power supply.

Abstract: A method of controlling a motor is provided. The method may determine one of a switching period, a fundamental cycle, and a current target per phase leg of the motor having at least one high voltage transition point; determine a dwell period to be enforced at the transition point between an engagement of a first switch of the phase leg and an engagement of a second switch of the phase leg where each of the first switch and the second switch may be selectively engageable between a first state and a second state; engage the first switch from the first state to the second state at the transition point; and engage the second switch from the first state to the second state after the transition point and upon expiration of the dwell period.

Abstract: A device for recovering electric energy in a DC motor-driven electric vehicle. The device includes a battery; a first inverter; an inductor; a first rectifier bridge or a second inverter; a DC motor; a second rectifier bridge or a third inverter; and a charger. The anode and the cathode of the battery are connected to input ends of the first inverter, respectively. One output end of the first inverter is connected to one end of a primary coil of the inductor. Another output end of the first inverter is connected to one input end of the first rectifier bridge or the second inverter. Another end of the primary coil of the inductor is connected to another input end of the first rectifier bridge. The charger is connected to the anode and the cathode of the battery for supplying power from an external power supply.

Abstract: A driving apparatus including an inverter unit for energizing the coil by switching ON and OFF of the switching element, an energization pattern determination unit for selecting a plurality of energization patterns, each of which indicates a direction of a current that flows through the coil, one by one when driving of a motor is started, and energizing the coil by switching ON and OFF of the switching element based on a selected energization pattern at a duty ratio corresponding to a value of a maximum current capable of being supplied by the power supply apparatus, a current applied time measurement unit for measuring an energization time, which is a time until a value of the current flowing through the coil reaches a predetermined target current value for each energization pattern, and a rotor stop position estimation unit for estimating a position at which the rotor stops.

Abstract: A power conversion apparatus includes: a high-voltage circuit; a low-voltage circuit operating with an operating voltage lower than that of the high-voltage circuit; and a substrate. The substrate includes an edge section, portions corresponding to the low-voltage circuit and the high-voltage circuit formed thereon and a voltage conversion circuit converting a voltage range of the high-voltage to be capable of operating by the low-voltage circuit. The substrate is provided with an insulating area in a periphery of the high-voltage circuit, and the voltage conversion circuit being provided with an insulating area in a periphery thereof. The insulating area provided in the periphery of the voltage conversion circuit shares an area with at least either of the insulating area provided in the periphery of the high-voltage circuit and the edge section of the substrate.