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：US20200007040A1

公开(公告)日：2020-01-02

申请号：US16553574

申请日：2019-08-28

Applicant: DENSO CORPORATION

Inventor： Yuichi HANDA ,  Kimikazu NAKAMURA ,  Seiji IYASU

IPC: H02M3/335 ,  B60L3/00 ,  B60L50/10 ,  B60W10/26

Abstract: A control apparatus includes: an operation prediction section that predicts that equipment will shift from an operation stopped state to an operating state; and a supply control section that, if it is not predicted that the equipment will shift from the operation stopped state to the operating state, sets a main-electrical power conversion device to the operation stopped state and operates an auxiliary-electrical power conversion device to supply electrical power from the auxiliary-electrical power conversion device to the equipment, and that, if it is predicted that the equipment will shift from the operation stopped state to the operating state, operates the main-electrical power conversion device to supply power from the main-electrical power conversion device to the equipment. Power conversion efficiency of the auxiliary-electrical power conversion device is higher than that of the main-electrical power conversion device within a load current range corresponding to a dark current flowing through the equipment.

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：US20170110972A1

公开(公告)日：2017-04-20

申请号：US15390763

申请日：2016-12-27

Applicant: DENSO CORPORATION

Inventor： Yuuichi HANDA ,  Seiji IYASU ,  Kimikazu NAKAMURA

IPC: H02M3/335 ,  H02M1/32

CPC classification number: H02M3/33546 ,  H02M1/08 ,  H02M1/32 ,  H02M1/4225 ,  H02M1/4233 ,  H02M3/1584 ,  H02M3/33507 ,  H02M3/33569 ,  H02M2001/0009 ,  H02M2001/007 ,  Y02B70/126

Abstract: A power conversion apparatus for converting AC power supplied from an AC power source to DC power includes an AC-DC conversion circuit connected with the AC power source at an input end thereof for converting the AC power to DC power, a DC-DC conversion circuit connected with an output end of the AC-DC conversion circuit at an input end thereof for converting DC voltage level of the DC power generated by the AC-DC conversion circuit, a smoothing capacitor parallel connected to the output end of the AC-DC conversion circuit and the input end of the DC-DC conversion circuit, a DC link voltage detector for detecting a voltage of the smoothing capacitor as a DC link voltage, and a control unit for controlling operation of the DC-DC conversion circuit. The control unit suppresses an output power of the DC-DC conversion circuit, if the DC link voltage is smaller than a predetermined value.