公开(公告)号：US20180138803A1

公开(公告)日：2018-05-17

申请号：US15816555

申请日：2017-11-17

Applicant: DENSO CORPORATION

Inventor： Seiji IYASU ,  Yuji HAYASHI ,  Kimikazu NAKAMURA ,  Yuichi HANDA

IPC: H02M1/088 ,  H02M3/335 ,  G01R19/22

CPC classification number: H02M1/088 ,  G01R19/22 ,  H02M3/33592 ,  H02M2001/0009

Abstract: A current detection apparatus is provided which detects a current flowing through a detection part in an electrical circuit. The current detection apparatus includes a first coil connected in series with the detection part, a second coil magnetically coupled with the first coil, a full-wave rectifier circuit connected to both ends of the second coil, a switching element having a first end connected to a positive electrode side output part of the full-wave rectifier circuit and a second end connected to a first resistor, and a second resistor that forms a closed circuit with the second coil regardless of an open or closed state of the switching element.

公开(公告)号：US20140204617A1

公开(公告)日：2014-07-24

申请号：US14160704

申请日：2014-01-22

Applicant: Denso Corporation

Inventor： Hideki ITOU ,  Norihito KIMURA ,  Yuji HAYASHI

IPC: H02M3/335

CPC classification number: H02M3/33507 ,  H02M3/156 ,  H02M7/53871

Abstract: In a power converter, a deviation calculator calculates, in each cycle, a deviation between a value of an input electrical parameter of a switch circuit and a target value selected by a selector in a previous cycle. The input electrical parameter depends on the input power to the switch circuit. A second calculator calculates, in each cycle, a value of a second feedback controlled variable such that the value of the second feedback variable approaches the value of the input electrical parameter. A controller controls, in each cycle, the selector to select one of the value of the first feedback controlled variable and the value of the second feedback controlled variable as the target value for the next cycle according to the deviation calculated by the deviation calculator.

Abstract translation: 在功率转换器中，偏差计算器在每个周期中计算开关电路的输入电参数的值与由前一周期中的选择器选择的目标值之间的偏差。 输入电气参数取决于开关电路的输入功率。 第二计算器在每个周期中计算第二反馈控制变量的值，使得第二反馈变量的值接近输入电参数的值。 控制器在每个周期中控制选择器根据由偏差计算器计算出的偏差来选择第一反馈控制变量的值之一和第二反馈控制变量的值作为下一周期的目标值。

公开(公告)号：US20200251994A1

公开(公告)日：2020-08-06

申请号：US16854408

申请日：2020-04-21

Applicant: DENSO CORPORATION

Inventor： Seiji IYASU ,  Yuichi HANDA ,  Yuji HAYASHI ,  Kaoru KOKETSU

IPC: H02M3/335

Abstract: A control device is applied to a power conversion system including a first power conversion device and a second power conversion device connected in parallel with a common power supply target. The control device acquires a load output including a load current or power to be supplied to the power supply target, and control operation of the first power conversion device and the second power conversion device based on at least any of a voltage parameter including any of an input voltage and an output voltage and the load output.

公开(公告)号：US20200161981A1

公开(公告)日：2020-05-21

申请号：US16677988

申请日：2019-11-08

Applicant: DENSO CORPORATION ,  IBARAKI UNIVERSITY

Inventor： Seiji IYASU ,  Yuji HAYASHI ,  Masatoshi UNO

IPC: H02M3/335 ,  H02M3/337

Abstract: A power conversion apparatus performs power conversion among at least a first device, a second device, and a third device. The power conversion apparatus includes a primary converter configured to perform power conversion between the first device and second device. The primary converter includes a first switch, a second switch, a third switch, a fourth switch, and a capacitor. The second switch, the third switch, the fourth switch, and the capacitor are connected in full bridge configuration to constitute a full bridge converter.

公开(公告)号：US20180342942A1

公开(公告)日：2018-11-29

申请号：US15987396

申请日：2018-05-23

Applicant: SOKEN, INC. ,  DENSO CORPORATION

Inventor： Seiji IYASU ,  Yuji HAYASHI ,  Yuichi HANDA

IPC: H02M1/08 ,  H02M3/335

CPC classification number: H02M3/33576 ,  H02M2001/0009

Abstract: A control unit capable of accurately calculating a magnetization bias of a transformer is provided, thereby appropriately reducing the magnetization bias. The control unit acquires first and second currents that flow through a transformer during a period where either first or second switches individually turn ON. The control unit predicts an amount of magnetization bias in either positive side or negative side of the excitation current that flows through the transformer. The control unit reduces the magnetization bias of the transformer based on the predicted amount of magnetization bias.

公开(公告)号：US20180062497A1

公开(公告)日：2018-03-01

申请号：US15547602

申请日：2016-02-05

Applicant: DENSO CORPORATION

Inventor： Tatsuya MURAKAMI ,  Yuji HAYASHI ,  Satoru YOSHIKAWA ,  Satoshi TAKADA ,  Masakazu FUKADA

IPC: H02M1/08 ,  H02M7/5387

CPC classification number: H02M7/53871 ,  H02M1/32 ,  H02M3/3376 ,  H02M7/48 ,  H02M7/539 ,  H02M2001/0009 ,  H02M2001/0054 ,  Y02B70/1491

Abstract: A power conversion device includes an inverter which converts a DC power supplied thereto from a power supply device to an AC power using an operation of a switching element and outputs the AC power toward a load a current meter which measures an output current from the inverter, and a control unit which controls the operation of the switching element to change an output voltage waveform from the inverter. The control unit changes the output voltage waveform on the basis of the measured output current.

公开(公告)号：US20140347767A1

公开(公告)日：2014-11-27

申请号：US14287507

申请日：2014-05-27

Applicant: DENSO CORPORATION ,  NIPPON SOKEN, INC.

Inventor： Kimikazu NAKAMURA ,  Yuji HAYASHI

IPC: H02H7/12

CPC classification number: H02H7/1213 ,  G05F1/573 ,  H02H3/44 ,  H02H9/02 ,  H02M1/32 ,  H02M3/155 ,  H02M3/335 ,  H02M7/5387

Abstract: In a power converter, a driver that drives, according to a control signal, a switching element of a switch circuit for converting input power to output power. The control signal represents how to drive the switching element. A controller outputs the control signal to the driver for controlling the driver. A measuring unit measures a value of input power input to the switch circuit. A protection determining unit determines, based on the measured value of the input power, whether there is a need to protect the power converter. The protection determining unit outputs a stop control signal to at least one of the driver and the controller based on a result of the determination of whether there is a need to protect the power converter. The stop control signal represents whether to forcibly stop drive of the switching element.

Abstract translation: 在功率转换器中，驱动器根据控制信号驱动用于将输入功率转换为输出功率的开关电路的开关元件。 控制信号表示如何驱动开关元件。 控制器将控制信号输出到驾驶员以控制驾驶员。 测量单元测量输入到开关电路的输入电源的值。 保护确定单元基于输入功率的测量值确定是否需要保护功率转换器。 保护确定单元基于确定是否需要保护功率转换器的结果向至少一个驱动器和控制器输出停止控制信号。 停止控制信号表示是否强制停止开关元件的驱动。

公开(公告)号：US20140198537A1

公开(公告)日：2014-07-17

申请号：US14149940

申请日：2014-01-08

Applicant: NIPPON SOKEN, INC. ,  DENSO CORPORATION

Inventor： Norihito KIMURA ,  Kimikazu NAKAMURA ,  Yuji HAYASHI

IPC: H02M3/335

CPC classification number: H02M3/33507 ,  H02M1/44 ,  H02M3/3376 ,  H02M7/53871 ,  H02M2001/0035 ,  Y02B70/16

Abstract: A power conversion apparatus includes a switch circuit which activates switching elements on the basis of a control signal, a feedback means which performs feedback control, a signal output means which outputs the control signal on the basis of a control variable of the feedback control, and a mode switching means which controls switching operation of the switch circuit by switching an operation mode between a normal mode and an intermittent mode in which the number of operations is less than that in the normal mode. The mode switching means changes timing of switching from the normal mode to the intermittent mode, on the basis of either or both of a first detection value which is an input value inputted to the switch circuit and a second detection value which is an output value outputted from the switch circuit.

Abstract translation: 电力转换装置包括基于控制信号激活开关元件的开关电路，执行反馈控制的反馈装置，基于反馈控制的控制变量输出控制信号的信号输出装置，以及 模式切换装置，其通过切换操作次数小于正常模式的正常模式和间歇模式之间的操作模式来控制开关电路的切换操作。 模式切换装置根据作为输入到开关电路的输入值的第一检测值和作为输出的输出值的第二检测值的一个或两个，将从正常模式切换到间歇模式的定时 从开关电路。

公开(公告)号：US20140062558A1

公开(公告)日：2014-03-06

申请号：US14015480

申请日：2013-08-30

Applicant: DENSO CORPORATION

Inventor： Hirofumi KINJOU ,  Yuji HAYASHI ,  Keiji SHIGEOKA ,  Kimikazu NAKAMURA

IPC: H03K5/12

CPC classification number: H03K5/12

Abstract: A current mode controlled power converter controllable in a digitally processing current mode even during an on time. In the power converter, each control period based on a reference signal includes a slope calculation period in which a slope compensation signal for the control period is calculated by a slope compensation unit. During each slope calculation period, the slope compensation unit negates the slope compensation signal calculated previous to the control period including the slope calculation period, and a reset signal generation unit compares a current detection signal detected by a current detection unit with a current instruction set to an error signal generated by an error signal generation unit to generate a reset signal.

Abstract translation: 电流模式控制功率转换器，即使在接通时间也可以数字处理电流模式控制。 在功率转换器中，基于参考信号的每个控制周期包括斜率计算周期，其中通过斜率补偿单元计算用于控制周期的斜率补偿信号。 在每个斜率计算周期期间，斜率补偿单元否定在包括斜率计算周期的控制周期之前计算的斜率补偿信号，并且复位信号生成单元将由电流检测单元检测的电流检测信号与当前指令集相比较 由误差信号产生单元产生的产生复位信号的误差信号。

公开(公告)号：US20130076330A1

公开(公告)日：2013-03-28

申请号：US13628406

申请日：2012-09-27

Applicant: DENSO CORPORATION

Inventor： Yuji HAYASHI

IPC: G05F3/08

CPC classification number: H02M3/156 ,  H02M1/32 ,  H02M2001/0003

Abstract: A power converter includes a control circuit provided with a set signal generator, a current command generator, a reset signal generator, a drive signal generator, and a pulse-width limiter. The set signal generator generates a set signal at every predetermined cycle. The current command generator generates a current command based on an output voltage command and an output voltage. The reset signal generator generates a reset signal based on an input current and the generated current command. The drive signal generator generates a drive signal which turns on in synchronisation with the generated set signal to turn on a switching element and which turns off in synchronization with the subsequently generated reset signal to turn off the switching element. The pulse-width limiter limits a pulse-width of the drive signal according to an input voltage and the output voltage, or according to the input voltage and the output voltage command.

Abstract translation: 电力转换器包括设置有设置信号发生器，电流指令发生器，复位信号发生器，驱动信号发生器和脉冲宽度限制器的控制电路。 设置信号发生器在每个预定周期产生一个设定信号。 电流指令发生器根据输出电压指令和输出电压产生电流指令。 复位信号发生器基于输入电流和产生的电流指令产生复位信号。 驱动信号发生器产生与所产生的设定信号同步接通的驱动信号，以接通开关元件，并与随后产生的复位信号同步关断以关断开关元件。 脉冲宽度限制器根据输入电压和输出电压，或根据输入电压和输出电压指令，限制驱动信号的脉冲宽度。