Abstract: With a motor in rotation, 0 is set as each of a d-axis current command and a q-axis current command, and offset learning is carried out. Then, in carrying out offset learning, a transmission is controlled such that a shift stage of the transmission falls within a low vehicle speed-side predetermined shift stage range. Thus, the rotational speed of the motor can be more reliably made high to a certain extent, and offset learning can be carried out. As a result, the accuracy of offset learning can be restrained from decreasing.

Abstract: A power supply apparatus of a vehicle includes: auxiliary machines electrically connected between a battery and a converter; and a control device controlling inverters and the like based on a required vehicle power including a required charge discharge amount of the battery. The control device has a continuous voltage step-up mode and an intermittent voltage step-up mode. In the continuous voltage step-up mode, the control device calculates the required charge discharge amount based on electric power supplied from the battery. In the intermittent voltage step-up mode, the control device changes a method of calculating the required charge discharge amount to a method that calculates the required charge discharge amount based on electric power passing through the converter, and makes the required charge discharge amount smaller than the required charge discharge amount in the continuous voltage step-up mode.

Abstract: Provided are a power supply device for a vehicle provided with a battery, a converter, and a controller, and a method for controlling the same. The controller controls the converter in a continuous boost mode in which the converter is continuously operated and an intermittent boost mode in which the converter is intermittently operated. The controller does not control the converter in the intermittent boost mode when a control that adjusts a reference point of a resolver of a motor generator is underway.

Abstract: In a hybrid vehicle, noise occurrence caused in a rectangular wave control of a motor is restricted when a motor running mode is selected with a converter boosting limit applied. A motor controller for a hybrid vehicle mounted with an internal combustion engine and a motor as power sources is provided. The motor controller includes a converter capable of boosting a voltage supplied from a power supply device; an inverter which converts an output voltage of the converter to an AC voltage and applies the AC voltage to the motor; and a control unit which controls the inverter to drive the motor by switching between two or more control modes.

Abstract: Basic current commands of a d-axis and a q-axis are set based on a torque command of a motor. Subsequently, when the rotation speed of the motor is high, an electric angle compensation amount is set to be larger than that when the rotation speed of the motor is low, and a corrected predicted electric angle is set by adding the electric angle compensation amount to a predicted electric angle predicted from an electric angle based on a rotation position of a rotor of the motor from a rotation position detection sensor. Then, current commands of the d-axis and the q-axis are set by multiplying the basic current commands of the d-axis and the q-axis by a correction coefficient based on the corrected predicted electric angle, and an inverter is controlled using the current commands.

Abstract: The electric motor vehicle includes a voltage conversion circuit, a primary-side smoothing capacitor, a battery, a system main relay, an inverter circuit, a secondary-side smoothing capacitor, an electric motor, a first voltage sensor, a collision sensor, and a controller. The controller is configured to adjust an operation of the voltage conversion circuit, detect primary-side voltage by using the first voltage sensor in a state that the voltage conversion circuit is operated in a case where a collision is detected by the collision sensor, and detect a state that the system main relay is off based on a change in the detected primary-side voltage.

Abstract: A power supply apparatus of a vehicle includes: an engine and a first MG; a battery; a converter stepping up a voltage of the battery and supplying the stepped-up voltage to an inverter of the vehicle; and a control device controlling the converter in a continuous voltage step-up mode in which the converter is continuously operated and an intermittent voltage step-up mode in which the converter is intermittently operated. The control device estimates an SOC of the battery based on battery current IB flowing into and out of the battery, and forces the battery to be charged by the engine and the first MG when an estimate value of the SOC is lower than a predetermined lower limit. The control device suppresses an operation of the converter in the intermittent voltage step-up mode to a greater extent as the estimate value of the SOC is closer to the lower limit.

Abstract: With a motor in rotation, 0 is set as each of a d-axis current command and a q-axis current command, and offset learning is carried out. Then, in carrying out offset learning, a transmission is controlled such that a shift stage of the transmission falls within a low vehicle speed-side predetermined shift stage range. Thus, the rotational speed of the motor can be more reliably made high to a certain extent, and offset learning can be carried out. As a result, the accuracy of offset learning can be restrained from decreasing.

Abstract: A hybrid vehicle includes a battery, a boost converter, a battery temperature sensor, a battery current sensor, a high-voltage sensor, and a control section. The control section includes an intermittent boosting operation program which stops the boost converter when a temperature of the battery is equal to or higher than a predetermined temperature and when an absolute value of a battery current is within a range of ±I0 and which restarts the boost converter when an actual boosted voltage is outside a range from VH2 to VH4, and a threshold switching program that switches the threshold range to ±I2 that is wider than the range of ±I0 and switches the range from the threshold VH2 to the threshold VH4 to a wider range from a threshold VH3 to a threshold VH5 when the battery temperature is lower than the predetermined temperature.

Abstract: Basic current commands of a d-axis and a q-axis are set based on a torque command of a motor. Subsequently, when the rotation speed of the motor is high, an electric angle compensation amount is set to be larger than that when the rotation speed of the motor is low, and a corrected predicted electric angle is set by adding the electric angle compensation amount to a predicted electric angle predicted from an electric angle based on a rotation position of a rotor of the motor from a rotation position detection sensor. Then, current commands of the d-axis and the q-axis are set by multiplying the basic current commands of the d-axis and the q-axis by a correction coefficient based on the corrected predicted electric angle, and an inverter is controlled using the current commands.

Abstract: A control device controls a boost converter to be operated in one of a continuous voltage-boosting mode in which the converter is continuously operated and in an intermittent voltage-boosting mode in which the converter is intermittently operated. The control device permits the converter to be controlled in the intermittent voltage-boosting mode when an atmospheric pressure is equal to or greater than a first prescribed value, and inhibits the converter from being controlled in the intermittent voltage-boosting mode when the atmospheric pressure is less than the first prescribed value.

Abstract: An electrically powered vehicle includes a motor generator configured to be capable of transmitting and receiving torque to and from a driving shaft coupled to a driving wheel; a DC power supply including a power storage device; and an inverter for performing bidirectional DC/AC power conversion between the DC power supply and the motor generator. The MG-ECU controls a plurality of power semiconductor switching elements to be turned on/off in accordance with a torque command value and a state value of the motor generator. When an accelerator pedal is released, the MG-ECU controls the inverter to superimpose a DC current component on an AC current of each phase in the motor generator in accordance with the state of charge of the power storage device.

Abstract: A power supply system includes: a first voltage converter configured to bidirectionally convert voltage between a first battery and an output line in accordance with first pulse width modulation control; a second voltage converter connected to the output line in parallel with the first voltage converter, the second voltage converter being configured to bidirectionally convert voltage between a second battery and the output line in accordance with second pulse width modulation control; and a controller configured to control the first and second voltage converters by generating first and second pulse width modulation control signals, the controller being configured to, when one or both of temperatures of the first and second batteries are lower than a predetermined temperature, change phases of the pulse width modulation control signals such that the first second pulse width modulation control signals change from a synchronous state to an asynchronous state.

Abstract: The present invention is intended to discriminate between a battery voltage sensor and the input voltage sensor of a converter for abnormality, without stopping the step-up operation of the converter. A voltage conversion device is provided with a battery, a converter, a battery voltage sensor, a voltage sensor for detecting the input voltage of the converter, a current sensor for detecting a reactor current, and a control unit. The control unit determines the abnormality of the battery voltage sensor or the input voltage sensor on the basis of an estimated value of input voltage calculated based on the reactor current, the input voltage of the converter and a battery voltage, without stopping the step-up operation of the converter.

Abstract: An electric vehicle driven by a synchronous motor 21 and an induction motor 31, and braked with a first regenerative torque BT1 generated by the synchronous motor generator 21 and a second regenerative torque BT2 generated by the induction motor generator 31. The ratio of the first regenerative torque BT1 to the second regenerative torque BT2 is changed in accordance with a state of charge (SOC) of a battery 11. In this way, a switching frequency from a regenerative brake to a hydraulic brake is restricted to improve drivability when a state of charge (SOC) of the battery 11 is high.

Abstract: An electric power supply device for a vehicle includes an electric storage device, a boost converter, and a controller. The boost converter boosts voltage of the electric storage device and supplies the boosted voltage to an electric load of the vehicle. The controller controls the boost converter in a continuous boost mode and an intermittent boost mode. The continuous boost mode is a mode in which the boost converter is in continuous operation. The intermittent boost mode is a mode in which the boost converter is in intermittent operation. The controller more restricts a charge/discharge demand of the electric storage device such that a charge/discharge demand of the electric storage device at a time when the boost converter is operated in the intermittent boost mode is more restrictive than a charge/discharge demand of the electric storage device at a time when the boost converter is operated in the continuous boost mode.

Abstract: A position detection system for detecting a position of a capsule medical device is provided. The capsule medical device has a coil constituting a part of a resonance circuit to generate an AC magnetic field. The position detection system includes: sensing coils that detect the AC magnetic field and output detection signals; and a calculation unit that calculates the position of the capsule medical device based on the detection signals. The calculation unit: determines a sensing coil having a maximum amplitude of the AC magnetic field as a reference coil among the sensing coils based on amplitude values of the AC magnetic field detected by the sensing coils, the amplitude values being calculated based on the detection signals; and determines a polarity of each sensing coil based on a first detection signal from the reference coil and a second detection signal from each sensing coil other than the reference coil.

Abstract: A control device controls a boost converter to be operated in one of a continuous voltage-boosting mode in which the converter is continuously operated and in an intermittent voltage-boosting mode in which the converter is intermittently operated. The control device permits the converter to be controlled in the intermittent voltage-boosting mode when an atmospheric pressure is equal to or greater than a first prescribed value, and inhibits the converter from being controlled in the intermittent voltage-boosting mode when the atmospheric pressure is less than the first prescribed value.

Abstract: A hybrid vehicle includes a battery, a boosting converter, first and second inverters, a first inverter connected to the first inverter, a second motor generator connected to the second inverter, and a control unit configured to start and suspend the boosting converter. The control unit increases one or both of carrier frequencies Fc1, Fc2 of the first and second inverters as a real boost voltage VHr increases during a suspended state of the boosting converter. The control unit decreases one or both of the carrier frequencies of the first and second inverters as real boost voltage VHr decreases during a suspended state of the boosting converter. System efficiency of an electric vehicle can be improved effectively by increasing the suspension time of the boosting converter, while securing drivability of the vehicle.

Abstract: A capsule endoscope system includes: a capsule endoscope configured to be introduced into a subject; a guiding unit that generates a magnetic field to guide the capsule endoscope; a guidance magnetic field control unit that switches between ON and OFF of the magnetic field; a body posture discriminating unit that discriminates a body posture of the subject; a model extracting unit that extracts a body posture model according to the body posture of the subject, from among prepared body posture models, and extracts an organ model according to the body posture of the subject, from among prepared organ models; and a display control unit configured to: superimpose the organ model according to the body posture of the subject, on the extracted body posture model when the magnetic field is ON; and display the extracted body posture model and to hide the organ model when the magnetic field is OFF.