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公开(公告)号：US20190305664A1
公开(公告)日：2019-10-03
申请号：US16370842
申请日：2019-03-29
Applicant: DENSO CORPORATION
Inventor： Seiji IYASU , Yuji HAYASHI , Yuichi HANDA
Abstract: In a control apparatus for a power converter, a current obtainer obtains a current flowing through an inductor as an inductor current, and a voltage obtainer obtains an alternating-current voltage. A slope compensation unit generates, based on the alternating-current voltage obtained by the voltage obtainer, a slope compensation signal having a slope that depends on the alternating-current voltage, and adds the slope compensation signal to the inductor current obtained by the current obtainer. A current controller controls on-off switching operations of a switch in a peak current mode to thereby cause the inductor current, to which the slope compensation signal has been added, to follow a sinusoidal command current that depends on the alternating-current voltage.
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公开(公告)号：US20170085181A1
公开(公告)日：2017-03-23
申请号：US14857023
申请日：2015-09-17
Applicant: DENSO CORPORATION
Inventor： Kenji TOMITA , Kimikazu NAKAMURA , Shinya GOTO , Katsutoyo MISAWA , Yuuichi HANDA , Seiji IYASU
IPC: H02M3/335
CPC classification number: H02M3/33507 , H02M3/3378
Abstract: A power conversion apparatus supplies power from a DC power supply to a capacitive load by a current input push-pull DCDC converter provided with switching elements Q1 and Q2. When a capacitive load voltage is not larger than a second predetermined value, a first mode is used which turns ON one of the switching elements Q1 and Q2 alternated with turning OFF both. When the capacitive load voltage is larger than the second predetermined value but not larger than a first predetermined value, a second mode is used which turns ON both of the switching elements Q1 and Q2, then turns ON one of them, then turns OFF both, sequentially. When the capacitive load voltage is larger than the first predetermined value, a third mode is used, turning ON both of the switching elements Q1 and Q2 alternated with turning ON one of them.
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公开(公告)号：US20160094134A1
公开(公告)日：2016-03-31
申请号：US14863801
申请日：2015-09-24
Applicant: DENSO CORPORATION
Inventor： Seiji IYASU , Kimikazu NAKAMURA , Yuuichi HANDA
IPC: H02M3/335
CPC classification number: H02M3/33515 , H02M3/3353 , H02M3/33569 , H02M3/3378 , H02M2001/0019 , H02M2001/325
Abstract: Power conversion apparatus converts input voltage and supplies output voltage to the electric load. The apparatus includes a semiconductor switch switches between open and closed states to regulate voltage control current for controlling output voltage, a first voltage detection section detects remote voltage being applied to the electric load as output voltage, a second voltage detection section detects a local voltage being applied to the output terminal as output voltage, a target current calculation section calculates target current which is the voltage control current target value, based on voltage deviation between target voltage which is the output voltage target value and either remote voltage or local voltage, and a switch control section controls the semiconductor switch so voltage control current becomes target current, to regulate output voltage to target voltage. The target current calculation section calculates the target current by using one of the remote or local voltage corresponds to a smaller target current.
Abstract translation: 电力转换装置转换输入电压并向电负载提供输出电压。 所述装置包括半导体开关，其在开状态和闭态之间切换以调节用于控制输出电压的电压控制电流，第一电压检测部分检测施加到电负载的远程电压作为输出电压，第二电压检测部分检测局部电压 施加到输出端子作为输出电压，目标电流计算部分基于作为输出电压目标值的目标电压与远程电压或局部电压之间的电压偏差来计算作为电压控制电流目标值的目标电流，以及 开关控制部分控制半导体开关，使电压控制电流成为目标电流，以调节输出电压到目标电压。 目标电流计算部分通过使用对应于较小目标电流的远程或局部电压之一来计算目标电流。
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公开(公告)号：US20130308230A1
公开(公告)日：2013-11-21
申请号：US13898687
申请日：2013-05-21
Applicant: DENSO CORPORATION
Inventor： Shinji ANDO , Seiji IYASU , Sadahisa ONIMARU , Kazuyoshi OBAYASHI
CPC classification number: H02J7/0031 , B60L3/0069 , B60L3/04 , B60L11/1803 , B60L11/1809 , B60L11/1814 , B60L11/1816 , B60L15/007 , B60L2220/54 , B60L2220/56 , B60L2240/547 , B60L2240/549 , B60L2250/10 , H02J7/027 , H02P27/00 , Y02T10/641 , Y02T10/645 , Y02T10/7005 , Y02T10/7072 , Y02T90/127 , Y02T90/14
Abstract: A charging device for a battery of a vehicle includes an insulation resistance detecting circuit, a charging circuit, a leak current detecting circuit and a decoupling circuit. The insulation resistance detecting circuit includes a coupling capacitor, and is disposed between the battery and a vehicle body for detecting an insulation resistance between the battery and the vehicle body. The charging circuit converts an alternating current supplied from an alternating current source into a direct current and charges the battery in a state without insulting the input terminal and the output terminal and in a state where the vehicle body is coupled to an earth. The leak current detecting circuit detects a leak current between the charging circuit and the earth. The decoupling circuit decouples the insulation resistance detecting circuit from one of the battery and the vehicle body during a charging of the battery.
Abstract translation: 一种用于车辆电池的充电装置包括绝缘电阻检测电路，充电电路，漏电流检测电路和去耦电路。 绝缘电阻检测电路包括耦合电容器，并且设置在电池和用于检测电池和车体之间的绝缘电阻的车身之间。 充电电路将从交流电源提供的交流电转换为直流电，并且在不侮辱输入端子和输出端子的状态下以及在车身与地球相连接的状态下对电池进行充电。 泄漏电流检测电路检测充电电路和地之间的漏电流。 在电池充电期间，去耦电路将绝缘电阻检测电路与电池和车体之一分离。
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公开(公告)号：US20220271684A1
公开(公告)日：2022-08-25
申请号：US17709806
申请日：2022-03-31
Applicant: DENSO CORPORATION
Inventor： Seiji IYASU , Syuji KURAUCHI , Yuuichi HANDA
Abstract: A power converter includes a full-bridge circuit, power converting circuit, transformer, and controller. The full-bridge circuit includes a series-connected unit made of first and second switches and a series-connected unit made of third and fourth switches and is connected to power transmitting terminals. The power converting circuit is connected to power receiving terminals. The transformer includes power transmitting coil and power receiving coil. The power transmitting coil is connected to full-bridge circuit. The power receiving coil is connected to power converting circuit. The controller turns on the first and second switches alternately and also the third and fourth switches alternately. A resistive load is connected to the power receiving terminals. The controller serves to determine a phase difference between the time when first switch is turned on and the time when third switch is turned on to decrease with a decrease in measured voltage developed at the power receiving terminals.
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Patent Agency Ranking
公开(公告)号：US20220209675A1
公开(公告)日：2022-06-30
申请号：US17697487
申请日：2022-03-17
Applicant: DENSO CORPORATION
Inventor： Shuji KURAUCHI , Yuichi HANDA , Seiji IYASU , Yuji HAYASHI
Abstract: A power conversion apparatus connected to three or more voltage units, includes three or more power conversion circuits connected to respective units of the three or more voltage units; and a multiport transformer connected to the three or more power conversion circuits at mutually different ports, in which at least one voltage unit of the three or more voltage units is an electrical load.
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公开(公告)号：US20220190732A1
公开(公告)日：2022-06-16
申请号：US17685957
申请日：2022-03-03
Applicant: DENSO CORPORATION
Inventor： Shuji KURAUCHI , Yuichi HANDA , Seiji IYASU , Yuji HAYASHI
Abstract: A power conversion apparatus connected to three or more voltage units, includes three or more power conversion circuits connected to respective units of the three or more voltage units; and a multiport transformer connected to the three or more power conversion circuits at mutually different ports, in which at least one voltage unit of the three or more voltage units is an electrical load.
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公开(公告)号：US20210351684A1
公开(公告)日：2021-11-11
申请号：US17385789
申请日：2021-07-26
Applicant: DENSO CORPORATION
Inventor： Shusei NISHIMURA , Seiji IYASU , Hisashi UMEMOTO , Atsushi FUKAYA
Abstract: A power conversion apparatus includes: a rotating electric machine that has a winding; an inverter that has a series-connection body of an upper arm switch and a lower arm switch; and a capacitor that is connected in parallel to the series-connection body. The power conversion apparatus includes: a connection path that, in a first storage battery and a second storage battery that are connected in series, electrically connects the winding with both a negative-electrode side of the first storage battery and a positive-electrode side of the second storage battery; and a control unit that controls switching of the upper arm switch and the lower arm switch such that a current flows between the first storage battery and the second storage battery through the inverter, the winding, and the connection path.
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公开(公告)号：US20210036599A1
公开(公告)日：2021-02-04
申请号：US17073830
申请日：2020-10-19
Applicant: DENSO CORPORATION
Inventor： Seiji IYASU , Yuji HAYASHI , Yuichi HANDA
Abstract: The control apparatus is used with the electrical power converter working to an inputted one of ac voltage and a terminal-to-terminal voltage at a capacitor into the other. The control apparatus calculates a sine-wave command value for a reactor current based on the ac voltage and an amplitude command value indicating an amplitude of the reactor current. The control apparatus also operates switches SW in peak-current mode control to bring the reactor current into agreement with a command value for the reactor current to which a current correction value is added. The control apparatus sets the current correction value to include a component of fluctuation in the terminal-to-terminal voltage at the capacitor based on the ac voltage Vac.
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公开(公告)号：US20210028717A1
公开(公告)日：2021-01-28
申请号：US17066973
申请日：2020-10-09
Applicant: DENSO CORPORATION
Inventor： Seiji IYASU , Yuji HAYASHI , Yuichi HANDA
Abstract: In a control apparatus for a power converter, a current obtainer obtains a current flowing through an inductor as an inductor current, and an alternating-current voltage obtainer obtains an alternating-current voltage. A drive signal outputting unit generates, based on the alternating-current voltage obtained by the voltage obtainer, a sinusoidal command. The drive signal outputting unit performs peak-current mode control to output a drive signal that controls switching of the drive switch to thereby cause the inductor current to follow the sinusoidal command. A delay unit delays, for one switching cycle of the drive switch, an off-switching timing of the drive switch in accordance with the alternating-current voltage. The drive signal defines the off-switching timing of the switch.
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