Toyota Jidosha Kabushiki Kaisha

Brother Kogyo Kabushiki-kaisha

Denso Corporation

Nippondenso Co., Ltd.

Toyota Jidosha Kogyo Kabushiki Kaisha

Kabushiki Kaisha Meidensha

Ngk Insulators, Inc.

Denso Corpora Tion

Hayashi Telempu Co., Ltd.

Tomey Technology Corporation

Tokyo Jidosha Kabushiki Kaisha

Nippon Steel Corporation

Taisho Pharmaceutical Co., Ltd.

Sato, Fumie

Kenji Yamada

Toshihiro Yamamoto

Hideaki Ishihara

Masaki Okamura

Hideto Hanada

Satoru Katoh

Takeshi Itoh

Kazutoshi Nishizawa

Toshifumi Yamakawa

Makoto Nakamura

Yasuhiro Nakai

Hichirosai Oyobe

Shigeru Ogawa

Yoshitaka Tomatsu

Hiroki Ohtani

Toshiyuki Shiraishi

Toshikazu Ono

Hideaki Saida

Yasuhiro Higashida

Masashi Mizuno

Naoyoshi Takamatsu

Fumie Sato

Kenichi Fujiwara

Hirofumi Kako

Takaya Soma

Akiko Niimi

Masayoshi Suhama

Kiyotaka Matsubara

Tadashi Ashikaga

Haruyuki Obata

Masahiro Kamiya

Shigeru Okuyama

Kosuke Hirano

Tatsuya Oike

Junjiro Yoshimura

Yutaka Kuromatsu

Noritake Mitsutani

Tsuyoshi Yamamoto

Masahiko Suzuki

Hiroyuki Hattori

Toshiya Hashimoto

Kenji Itagaki

Noriaki Ikemoto

Yoshiki Katoh

Masashi Tokura

Takayuki Mizuno

Kiyoshi Kawaguchi

Eiji Sato

Yasutoshi Yamanaka

Shunsuke Oyama

Hideo Nakai

Ryohei Komiya

Yuichi Shirota

Kazutaka Suzuki

Ryoji Sato

Toshihiko Matsuoka

Yuki Ihira

Takayuki Hayashi

Isao Kuroyanagi

Kiyoe Ochiai

Akira Yamanaka

Masaki Kutsuna

Masaki Harada

Takashi Furukawa

Shigeru Kadota

Akira Takata

Yoshinori Teshima

Shinichi Sugai

Akira Ii

Takeshi Iguchi

Ryoichi Sanada

Akiyoshi Morii

Naoki Ito

Takao Ikeda

Kazunari Moriya

Tomotaka Katano

Taichi Asano

Shintaro Tsujii

Keiji Matsumoto

Shinichirou Taguchi

Shota Terachi

Shinjiro Ashida

Kyouichi Suzuki

Shiro Maeda

Mitsuyoshi Saito

Yoshihiro Shamoto

Tomoko Shimana

Shinji Ishida

Yoshihiro Murai

Chikara Kobayashi

Toshinobu Nishi

Hiroyuki Hosokawa

Takashi Matsukubo

Akimitsu Inoue

Makoto Oguri

Shinichiro Taguchi

Masafumi Saitou

Kazutoshi Nagayama

Hideaki Kamiya

Hidenori Sato

A drive device includes a motor, an inverter, an electric power storage device, and an electronic control unit. The electronic control unit is configured to generate a first pulse width modulation (PWM) signal of the switching elements by comparison of a voltage command of each phase according to a torque command of the motor and a carrier wave voltage, as a first PWM control. The electronic control unit is configured to generate a second PWM signal of the switching elements based on a modulation factor and a voltage phase of a voltage according to the torque command and a pulse count per unit cycle of an electric angle of the motor, as a second pulse width modulation control. The electronic control unit is configured to limit execution of the second PWM control when high controllability of the motor is requested rather than when the high controllability is not requested.

Drive device and vehicle

A heat exchanger includes a duct, a stacked core, and a coupling plate. The duct includes a first plate that is disposed to face at least one of end faces of the stacked core in a core width direction, and a second plate that is disposed to face at least one of the end faces of the stacked core in a tube stacking direction. The second plate includes a second-plate end plate portion disposed to face the end face of the stacked core in the core width direction and brazed to a wall surface of the first plate, a second-plate center plate portion that is disposed to face the end face of the stacked core in the tube stacking direction, and a flange portion that extends in the tube stacking direction and is brazed to a bottom wall surface of a groove portion of the coupling plate.

Heat exchanger

An electronic control unit is configured to generate a pulse width modulation signal of a plurality of switching elements based on a modulation factor and a voltage phase of a voltage based on a torque command of a motor and a pulse number per unit cycle of an electric angle of the motor and perform switching of the switching elements. The electronic control unit is configured to generate the pulse width modulation signal of the switching elements such that total loss of the motor and an inverter when a heat conversion request of drive electric power of the motor has been issued becomes greater than the total loss when the heat conversion request has not been issued.

Drive device, vehicle, and control method for drive device

A microcomputer including first and second CPUs is provided. The first and second CPUs may execute identical control programs in parallel. The microcomputer may control a write access by the first or second CPU. The microcomputer may compare an output of the first CPU with an output of the second CPU. Data is written to a write target unit. The microcomputer outputs a write response signal to the first and second CPUs when a data write destination of the first and second CPUs is the write target unit. The microcomputer outputs an abnormality determination signal when data output from the first CPU mismatches with data output from the second CPU. The microcomputer writes the data to the write target unit when the data write destination of the first and second CPUs is the write target unit and the abnormality determination signal is not input.

Microcomputer

First pulse width modulation control is a control of generating a first pulse width modulation signal for a plurality of switching elements by comparison of modulated waves of voltage commands in phases based on a torque command for a motor with a carrier voltage, and performing switching of the plurality of switching elements. Second pulse width modulation control is a control of generating a second pulse width modulation signal for the plurality of switching elements based on a modulation factor of a voltage and a voltage phase based on the torque command and the number of pulses per unit period of an electrical angle of the motor, and performing switching of the plurality of switching elements. An electronic control unit is configured to switch the plurality of switching elements between the first pulse width modulation control and the second pulse width modulation control at irregular time intervals.

Drive device and drive system

A driving device includes a motor, an inverter configured to drive the motor by switching a plurality of switching elements, and an electronic control unit configured to set voltage commands of phases according to temporary voltage commands of the phases based on a torque command of the motor and perform switching control of the switching elements by generating PWM signals for the switching elements by using the voltage commands of the phases and a carrier voltage. The electronic control unit is configured to switch a method of setting the voltage commands between a first method and a second method for each irregular time interval. The first method is a method of setting the voltage commands without superposing harmonics to the temporary voltage commands, and the second method is a method of setting the voltage commands by superposing the harmonics to the temporary voltage command.

Driving device

An electronic control unit is configured to perform pulse width modulation control. The pulse width modulation control is to generate signals of a plurality of switching devices of an inverter by comparing a modulation wave of a voltage command of each phase based on a torque command of the motor, with a carrier wave, and perform switching of the switching devices. The electronic control unit is configured to generate the carrier wave so that, in each unit interval, a required time in the unit interval is equal to a total time of a plurality of unit components, and, in at least one unit interval, durations of at least two unit components of a plurality of unit components are different from each other.

Drive system, automobile, and method of controlling drive system

As a control of an inverter, a first pulse width modulation control switches a plurality of switching elements by generating a first pulse width modulation signal of the switching elements, and a second pulse width modulation control switches the switching elements by generating a second pulse width modulation signal of the switching elements based on a voltage modulation rate, a voltage phase, and the number of pulses per unit cycle of an electrical angle of the motor based on the torque command and has a smaller number of switchings of the switching elements than the first pulse width modulation control. The first pulse width modulation control and the second pulse width modulation control are executed in a switched manner. Execution of the second pulse width modulation control as the control of the inverter is restricted when the quietness is needed, compared with when the quietness is not needed.

Drive apparatus and automobile

A vehicle performs first PWM control of generating a first PWM signal of a plurality of switching elements to switch the plurality of switching elements by comparing voltage commands of phases based on a torque command with a carrier voltage when a target operating point including a rotation speed and the torque command of the motor is outside a predetermined area, and selects and performs second PWM control of generating a second PWM signal of the plurality of switching elements to switch the plurality of switching elements based on a modulation factor of a voltage and a voltage phase based on the torque command and the number of pulses in a predetermined period of an electrical angle of the motor or the first PWM control when the target operating point is inside the predetermined area.

Vehicle with controller for performing pulse width modulation control

When an absolute value of a rotation speed change rate of a motor is equal to or less than a threshold and an absolute value of a torque command change rate of the motor is equal to or less than a threshold, a switching angle is changed by cyclically changing a pulse type or the number of pulses as change in a pulse pattern. With this, respective order components of harmonics are dispersed, whereby it is possible to reduce the degree of prominence of a specific order component in harmonics relative to other order components.

Vehicle and control method for vehicle

The present invention minimizes system loss during execution of intermittent boosting. A boost converter control apparatus has: a target value setting device for setting a target value of output voltage that minimizes a loss of a power supply system including a DC power supply, a boost converter, and a loading apparatus; an intermittent controlling device for executing an intermittent process of boost control in such a manner that the output voltage is maintained in a range including the set target value; an average value calculating device for calculating an average value of the output voltage in an execution period of the intermittent process; and a target value correcting device for correcting the set target value to reduce a deviation between the calculated average value and the set target value.

Boost converter control apparatus

A vehicle includes an electronic control unit. The electronic control unit is configured to perform control of an inverter by switching a plurality of controls including i) first PWM control of generating a first PWM signal of a plurality of switching elements by comparison of voltage commands of respective phases based on a torque command of a motor with a carrier voltage and switching the plurality of switching elements, and ii) second PWM control of generating a second PWM signal of the plurality of switching elements based on a modulation factor of a voltage and a voltage phase based on the torque command and the number of pulses in a predetermined period of an electrical angle of the motor and switching the plurality of switching elements. The electronic control unit is configured to limit execution of the second PWM control when an abnormality occurs in the rotational position sensor.

Vehicle comprising electronic control unit configured to control inverter by switching PWM control

A vehicle includes an electronic control unit configured to perform control of an inverter by switching a plurality of controls including: first PWM control of generating a first PWM signal of a plurality of switching elements by comparison of voltage commands of respective phases based on a torque command of a motor with a carrier voltage and switching the plurality of switching elements; and second PWM control of generating a second PWM signal of the plurality of switching elements based on a modulation factor of a voltage and a voltage phase based on the torque command and the number of pulses in a predetermined period of an electrical angle of the motor and switching the plurality of switching elements. The electronic control unit is configured to limit execution of the second PWM control when an abnormality occurs in at least one of the current sensor or the voltage sensor.

Vehicle including electronic control unit configured to control inverter

A converter is capable of using two power sources located on a first side by switching connection of the two power sources between series connection and parallel connection. Under certain conditions, such as when a detected atmospheric pressure is lower than a predetermined value, frequency of use of the two power sources in series connection is reduced in the converter. It is thereby possible to prevent generation of excessive voltage by the power converter.

Vehicle control device

The present invention prevent a shortage of the output when an intermittent boost is executed. A control apparatus for controlling a boost converter that can boost power supply voltage by boost control has: an intermittent controlling device for executing the intermittent boosting in such a manner that output voltage is maintained in a voltage variation allowable range including a target value on the basis of the detected output voltage of the boost converter; an average value calculating device for calculating an average value of the output voltage in an execution period of the intermittent boosting; and a target value correcting device for correcting the set target value to increase it when the calculated average value is less than the target value and is less than a required voltage value of a loading apparatus.

Growing community of inventors

Komaki, Japan

Kenji Yamada