Abstract: A power conversion device includes a switching signal generation unit that generates switching signals so that time points of at least one of pairs synchronize with each other. A first pair includes a rising time point at a first junction point of a first single-phase leg, and a falling time point at a second junction point of a second single-phase leg. A second pair includes a falling time point at the first junction point and a rising time point at the second junction point. The switching signal generation unit determines time points to turn on or turn off for upper arm switching element and a lower arm switching element based on phase currents respectively at a rising time point and at a falling time point of the terminal voltages.

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: A vehicle-to-vehicle distance control device includes a delay distance calculation unit and a delay distance compensation unit. In a running scene in which the velocity of a leading vehicle changes, a delay distance generated owing to a delay in a vehicle velocity control unit is calculated, and, while a delay distance compensation vehicle velocity command to compensate for the delay distance is considered for a vehicle velocity command, an actual vehicle-to-vehicle distance is controlled to be matched with a target track from an initial value of the vehicle-to-vehicle distance until arrival at a target vehicle-to-vehicle distance obtained after the leading vehicle accelerates/decelerates.

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 control device for controlling a rotating machine having a stator winding and a field winding includes a current command generation unit which generates a current command value on the basis of the temperature of the rotating machine. The current command generation unit includes a constraint condition setting unit which calculates a constraint condition on the basis of a torque command, stator winding voltage, stator winding current, and field winding current, an optimization calculation unit which calculates and outputs the current command value, using the constraint condition and an evaluation function, and a constraint condition update unit which updates the constraint condition on the basis of the temperature of the rotating machine. The current command generation unit calculates and outputs the current command value, using the updated constraint condition.

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: A rotating machine control device for controlling a rotating machine having a stator winding and a field winding includes a current command generation unit which generates a current command value on the basis of the temperature of the rotating machine. The current command generation unit includes a constraint condition setting unit which calculates a constraint condition on the basis of a torque command, stator winding voltage, stator winding current, and field winding current, an optimization calculation unit which calculates and outputs the current command value, using the constraint condition and an evaluation function, and a constraint condition update unit which updates the constraint condition on the basis of the temperature of the rotating machine. The current command generation unit calculates and outputs the current command value, using the updated constraint condition.

Abstract: A power conversion device includes a switching signal generation unit that generates switching signals so that time points of at least one of pairs synchronize with each other. A first pair includes a rising time point at a first junction point of a first single-phase leg, and a falling time point at a second junction point of a second single-phase leg. A second pair includes a falling time point at the first junction point and a rising time point at the second junction point. The switching signal generation unit determines time points to turn on or turn off for upper arm switching element and a lower arm switching element based on phase currents respectively at a rising time point and at a falling time point of the terminal voltages.

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: This motor control device controls a motor having a first stator winding, a second stator winding, and a field winding whose response to a current command is slower than those of the first stator winding and the second stator winding, and includes: a parameter acquisition unit which acquires motor state data and a motor parameter corresponding to the motor state data; and a current command calculation unit which calculates current commands for the windings on the basis of a torque command for the motor and the motor parameter. The current command calculation unit includes a response delay reproduction unit which reproduces response delay of field winding current in a field winding current command, and calculates a first stator winding current command and a second stator winding current command, using the field winding current command in which the response delay is reproduced.

Abstract: Switching control of an inverter is performed such that rising and falling of a terminal voltage of U phase including upper and lower arm switching elements are calculated, and the calculated rising of the terminal voltage of U phase and falling of a terminal voltage of V phase or W phase or the calculated falling of the terminal voltage of U phase and rising of the terminal voltage of V phase or W phase are synchronized with each other.

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 vehicle-to-vehicle distance control device includes a delay distance calculation unit and a delay distance compensation unit. In a running scene in which the velocity of a leading vehicle changes, a delay distance generated owing to a delay in a vehicle velocity control unit is calculated, and, while a delay distance compensation vehicle velocity command to compensate for the delay distance is considered for a vehicle velocity command, an actual vehicle-to-vehicle distance is controlled to be matched with a target track from an initial value of the vehicle-to-vehicle distance until arrival at a target vehicle-to-vehicle distance obtained after the leading vehicle accelerates/decelerates.

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 rotation angle detection device for accurately detecting a rotation angle is obtained even when electromagnetic noise due to an electrical component(s) and the like of an electric automotive vehicle is superimposed on detection signals of the rotation angle detection device.

Abstract: The electric motor control device includes a rotation angle correction amount calculation unit that, based on a rotation angle signal for an alternating current electric motor output from an angle sensor and a current detection signal for the alternating current electric motor output from a detector, calculates a rotation angle correction amount to correct a rotation angle error between the rotation angle signal and a magnetic pole position of the alternating current electric motor, wherein the rotation angle correction amount calculation unit, based on a current detection signal when a short circuit is caused between winding terminals of the alternating current electric motor, calculates at least either one rotation angle correction amount of a direct current component rotation angle correction amount and an alternating current component rotation angle correction amount.

Abstract: In a rotary machine control device for controlling a rotary machine having a multi-group multiphase configuration, a phase difference ?coil of 150° to 210° (excluding 180°) is electrically provided between a winding for an odd-number group and a winding for an even-number group in the rotary machine, wherein, when the effective value of a voltage command is smaller than a voltage threshold, the phase difference between the voltage commands for the respective groups is set to 180°, and when a torque command is greater than a torque threshold, the phase difference between the voltage commands for the respective groups is set to ?coil.

Abstract: To provide a controller of rotary electric machine which can control voltage of each set of the winding appropriately within a range less than or equal to the DC power voltage, to the rotary electric machine which has plural sets of windings. A controller of rotary electric machine calculates, for each set, a required DC voltage which is a minimum DC power voltage required for applying a voltage according to the voltage command value to the winding, based on the voltage command value; calculates one common required DC voltage which is common to all sets, based on all sets of the required DC voltages; changes the common voltage control value so that the common required DC voltage-approaches the DC power voltage; and changes each set of the current command value based on the common voltage control value.

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 drive system including: a battery; a power generation device (PGD) including a power generator (PG) mounted to an engine shaft and an inverter converting AC-voltage of the PG into DC-voltage; a drive device (DD) including a motor driving a driven component and an inverter performing bi-directional conversion between AC-voltage of the motor and DC-voltage; a switching device (SD) including a plurality of switches switching a connection of the battery and the PGD at both ends of the DD between a series connection (S-connection) and a parallel connection (P-connection) for connection; a reactor arranged between the battery and SD or between the PGD and the DD; and a controller controlling each of the SD, PGD, and DD, wherein the controller uses, when a speed of the driven component is being changed, the SD to fix the connection of the battery and PGD to S-connection or P-connection after alternately switching the connection between the S-connection and the P-connection.