Abstract: An information management method collects log information of one or more home electrical apparatuses corresponding to service providers. Display screen data is generated which indicates a status of the log information. The display screen data includes groups of information which each contain information on an apparatus, a service provider corresponding to the apparatus, and log information output from the apparatus. Provision of the log information of each group is individually selectable. The display screen data is provided via a network to a display terminal that performs access to a server device. Information is received from the display terminal, which indicates that selection on whether or not provision of the log information is performed. Provision of the log information is not performed on the selected group when a determination is made that refusal of provision of the log information on the selected group is performed.

Abstract: A motor drive system includes a motor that drives a vehicle so as to travel, a motor control device that includes an inverter and a control device that controls the inverter, and which controls the motor, and a communication electronic control unit connected to the control device, wherein the communication electronic control unit transmits information regarding a drive system of the motor transmitted from the control device to an exterior of the vehicle.

Abstract: A rotating machine power conversion device is obtained which achieves operational continuation in a rotational speed range in which the operational continuation is enabled, even when a single phase of an electrical power conversion device made of switching devices causes a disconnection or turn-off failure. The rotating machine power conversion device comprises: a normality-case/abnormality-case current control device selection device for transferring between a normality-case current control device and an abnormality-case current control device in accordance with a determination result of an abnormality determination device; and an abnormality-case current control device/power conversion halt device selection device, using a rotational speed calculation device, for transferring between the abnormality-case current control device used when a rotational speed is lower than that being prespecified, and the power conversion halt device used when a rotational speed is higher than that being prespecified.

Abstract: There has been a drawback in that current command values need to be set for a current command unit of a power conversion device in accordance with efficiency, and thus the number of operation steps increases. In the power conversion device connected between a three-phase AC rotating machine and a DC power supply and configured to convert DC power into AC power, a DC voltage value, of the DC power supply, that is to be inputted to a current command unit of the power conversion device is corrected on the basis of an efficiency index, and a current command value to be outputted by the current command unit is changed on the basis of the corrected DC voltage value and a torque command value, whereby the efficiencies of the power conversion device and the three-phase AC rotating machine are controlled.

Abstract: In a rotating machine control device which controls an alternating current voltage command which is transmitted to an electric power converter, the alternating current voltage command is generated so that 1f component of the phase current may follow a current command. However, when the rotor position information by a position detecting element which detects the position of the rotor of a rotating machine has an error, an offset component is produced in the phase current. A controller includes an offset compensation part which calculates an offset compensation amount, from a detection result of the detection current so that the offset component of the detection current of the current detecting element may be decreased, and performs an addition or subtraction operation of an offset compensation command to the alternating current voltage command which a voltage command generation part outputs.

Abstract: To provide a controller for rotary electric machine apparatus which can calculate the voltage command value of the converter which reduces power loss with good accuracy, in the case where the normal modulation control and the overmodulation control are switched and performed. A controller for rotary electric machine apparatus sets a system voltage that power loss becomes the minimum as the converter voltage command value, based on a power loss characteristics of the normal modulation control which is a power loss characteristics of at least the inverter with respect to the system voltage in performing the normal modulation control, and a power loss characteristics of the overmodulation control which is a power loss characteristics of at least the inverter with respect to the system voltage in performing the overmodulation control.

Abstract: A motor drive system includes a motor that drives a vehicle so as to travel, a motor control device that includes an inverter and a control device that controls the inverter, and which controls the motor, and a communication electronic control unit connected to the control device, wherein the communication electronic control unit transmits information regarding a drive system of the motor transmitted from the control device to an exterior of the vehicle.

Abstract: There is provided an electric-power conversion system controller in which even when the temperatures of a switching device and a diode included in the driving circuit for a converter become high, the performances of the devices are prevented from being deteriorated and the lifetimes thereof are prevented from being shortened.

Abstract: To provide a controller for AC rotary machine and a motor vehicle which can solve the countermeasure against heat of the inverter, and the generation of sound or electric resonance, at the same time. A controller for AC rotary machine turns on and off a plurality of switching devices which the inverter has at PWM frequency, based on the n-phase voltage command values; detects the temperature of the inverter; changes the PWM frequency based on the detected temperature of the inverter; and changes the PWM frequency out of range of the avoidance frequency band, when the PWM frequency after change is within the range of the avoidance frequency band.

Abstract: To provide a controller for rotary electric machine apparatus which can calculate the voltage command value of the converter which reduces power loss with good accuracy, in the case where the normal modulation control and the overmodulation control are switched and performed. A controller for rotary electric machine apparatus sets a system voltage that power loss becomes the minimum as the converter voltage command value, based on a power loss characteristics of the normal modulation control which is a power loss characteristics of at least the inverter with respect to the system voltage in performing the normal modulation control, and a power loss characteristics of the overmodulation control which is a power loss characteristics of at least the inverter with respect to the system voltage in performing the overmodulation control.

Abstract: There is provided an electric-power conversion system controller in which even when the temperatures of a switching device and a diode included in the driving circuit for a converter become high, the performances of the devices are prevented from being deteriorated and the lifetimes thereof are prevented from being shortened.

Abstract: A rotating machine power conversion device is obtained which achieves operational continuation in a rotational speed range in which the operational continuation is enabled, even when a single phase of an electrical power conversion device made of switching devices causes a disconnection or turn-off failure. The rotating machine power conversion device comprises: a normality-case/abnormality-case current control device selection device for transferring between a normality-case current control device and an abnormality-case current control device in accordance with a determination result of an abnormality determination device; and an abnormality-case current control device/power conversion halt device selection device, using a rotational speed calculation device, for transferring between the abnormality-case current control device used when a rotational speed is lower than that being prespecified, and the power conversion halt device used when a rotational speed is higher than that being prespecified.

Abstract: There has been a drawback in that current command values need to be set for a current command unit of a power conversion device in accordance with efficiency, and thus the number of operation steps increases. In the power conversion device connected between a three-phase AC rotating machine and a DC power supply and configured to convert DC power into AC power, a DC voltage value, of the DC power supply, that is to be inputted to a current command unit of the power conversion device is corrected on the basis of an efficiency index, and a current command value to be outputted by the current command unit is changed on the basis of the corrected DC voltage value and a torque command value, whereby the efficiencies of the power conversion device and the three-phase AC rotating machine are controlled.

Abstract: The rotating-electric-machine control apparatus is provided with two or more torque compensation amount maps that each store a torque compensation amount corresponding to a detection rotation speed and a first torque command and a torque compensation amount map selector that selects a single torque compensation amount map from the two or more torque compensation amount maps, based on at least one of the detection rotation speed and control information indicating a control method utilized by the voltage applying device.

Abstract: Provided is a control device for a permanent magnet-type rotating electrical machine (100), which includes a current coordinate transformation unit (109) configured to output a d-axis current and a q-axis current by coordinate transformation of three-phase AC currents respectively detected by current detection units (111, 112, 113), a current correction direction calculation unit (108) configured to calculate a current correction direction through use of the d-axis current and the q-axis current, and a current correction amount addition unit (102) configured to correct a d-axis current command and a q-axis current command based on the current correction direction. In this manner, an induced voltage is converged to lie within a maximum voltage circle in accordance with a power supply voltage.

Abstract: The rotating-electric-machine control apparatus is provided with two or more torque compensation amount maps that each store a torque compensation amount corresponding to a detection rotation speed and a first torque command and a torque compensation amount map selector that selects a single torque compensation amount map from the two or more torque compensation amount maps, based on at least one of the detection rotation speed and control information indicating a control method utilized by the voltage applying device.

Abstract: To provide an AC rotary machine controller which can improve setting accuracy of torque command correction value in a region where change of torque command correction value to change of rotational speed and torque becomes large and where nonlinearity is high, and can suppress increase in data amount of correction value setting map. In correction value setting map, one or both of a torque axis unequal interval setting that sets interval of the torque command map axis to unequal interval in each rotational speed; and a rotation axis unequal interval setting that sets interval of the rotational speed map axis to unequal interval were done.

Abstract: To provide an AC rotary machine controller which can improve setting accuracy of torque command correction value in a region where change of torque command correction value to change of rotational speed and torque becomes large and where nonlinearity is high, and can suppress increase in data amount of correction value setting map. In correction value setting map, one or both of a torque axis unequal interval setting that sets interval of the torque command map axis to unequal interval in each rotational speed; and a rotation axis unequal interval setting that sets interval of the rotational speed map axis to unequal interval were done.

Abstract: Provided is a control device for a permanent magnet-type rotating electrical machine (100), which includes a current coordinate transformation unit (109) configured to output a d-axis current and a q-axis current by coordinate transformation of three-phase AC currents respectively detected by current detection units (111, 112, 113), a current correction direction calculation unit (108) configured to calculate a current correction direction through use of the d-axis current and the q-axis current, and a current correction amount addition unit (102) configured to correct a d-axis current command and a q-axis current command based on the current correction direction. In this manner, an induced voltage is converged to lie within a maximum voltage circle in accordance with a power supply voltage.

Abstract: In the case where a virtual vehicle speed selection means selects one of a first virtual vehicle speed and a second virtual vehicle speed so as to perform switching from the other one to said one of the first virtual vehicle speed and the second virtual vehicle speed, the rotation speed of an electric motor is decelerated to a threshold value with which travel of the vehicle stabilizes and the deceleration of the electric motor is stopped when the rotation speed of the electric motor becomes lower than the threshold value, and then traction of the vehicle is controlled based on the selected virtual vehicle speed.