公开(公告)号：US20210013811A1

公开(公告)日：2021-01-14

申请号：US17041248

申请日：2019-03-25

Applicant: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.

Inventor： Yuji KUDOH

IPC: H02M5/297 ,  H02M5/293 ,  H02M5/14

Abstract: A power conversion system converts an input alternating-current voltage having a first frequency into an output alternating-current voltage having a second frequency lower than the first frequency. The power conversion system includes a voltage converter, a PDM controller, and a feedback controller. The voltage converter converts the input alternating-current voltage into the output alternating-current voltage in accordance with control signals and outputs the output alternating-current voltage to a load. The PDM controller performs pulse density modulation of an output voltage command value of the output alternating-current voltage to generate the control signals and outputs the control signals to the voltage converter. The feedback controller generates the output voltage command value based on an output current value of the voltage converter and a state of the load and outputs the output voltage command value to the PDM controller.

公开(公告)号：US20160065083A1

公开(公告)日：2016-03-03

申请号：US14783311

申请日：2014-03-28

Applicant: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.

Inventor： Kenji MIZUTANI ,  Yuji KUDOH ,  Nobuyuki OTSUKA

IPC: H02M5/04

CPC classification number: H02M5/04 ,  H02M5/297 ,  H02M2005/2932 ,  H02P27/16

Abstract: A power conversion method including: receiving, by a pair of input terminals, an input voltage in which is a single-phase AC voltage; designating a first target voltage ref1, a second target voltage ref2, and a third target voltage ref3 respectively representing consecutive target values of first-phase, second-phase, and third-phase output voltages forming a three-phase AC voltage; and cyclically connecting and disconnecting (i) the input terminals and first output terminals at a duty cycle corresponding to |ref1/in| when an instantaneous value of |in| is greater than an instantaneous value of |ref1|, (ii) the input terminals and second output terminals at a duty cycle corresponding to |ref2/in| when the instantaneous value of |in| is greater than an instantaneous value of |ref2|, and (iii) the input terminals and third output terminals at a duty cycle corresponding to |ref3/in| when the instantaneous value of |in| is greater than an instantaneous value of |ref3|.

Abstract translation: 一种电力转换方法，包括：通过一对输入端子接收作为单相交流电压的输入电压; 指定分别表示形成三相AC电压的第一相，第二相和第三相输出电压的连续目标值的第一目标电压ref1，第二目标电压ref2和第三目标电压ref3; 并且以对应于| ref1 / in |的占空比周期性地连接和断开（i）输入端子和第一输出端子 当| in |的瞬时值 大于| ref1 |的瞬时值，（ii）输入端子和第二输出端子的占空比对应于| ref2 / in | 当| in |的瞬时值 大于| ref2 |的瞬时值，以及（iii）输入端子和第三输出端子，其占空比对应于| ref3 / in | 当| in |的瞬时值 大于瞬时值| ref3 |。

公开(公告)号：US20220337239A1

公开(公告)日：2022-10-20

申请号：US17633160

申请日：2020-10-23

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Yusuke KINOSHITA ,  Hidetoshi ISHIDA ,  Hiroyuki HANDA ,  Yuji KUDOH ,  Satoshi NAKAZAWA

IPC: H03K17/687 ,  G01R31/26

Abstract: A switch system includes a bidirectional switch, a first gate driver circuit, a second gate driver circuit, a control unit, a first decision unit, and a second decision unit. The bidirectional switch includes a first source, a second source, a first gate, and a second gate. The first decision unit determines, based on a voltage at the first gate and a first threshold voltage, a state of the first gate in a first period in which a signal to turn OFF the first gate is output from the control unit to the first gate driver circuit. The second decision unit determines, based on a voltage at the second gate and a second threshold voltage, a state of the second gate in a second period in which a signal to turn OFF the second gate is output from the control unit to the second gate driver circuit.

公开(公告)号：US20150333689A1

公开(公告)日：2015-11-19

申请号：US14761542

申请日：2014-01-10

Applicant: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.

Inventor： Yuji KUDOH ,  Kenji MIZUTANI ,  Nobuyuki OTSUKA

IPC: H02P27/16 ,  H02P21/00 ,  H02P21/14 ,  H02P27/04 ,  H02M5/293 ,  H02M5/297

CPC classification number: H02P27/16 ,  H02M5/293 ,  H02M5/297 ,  H02M2005/2932 ,  H02P27/045 ,  H02P2207/01 ,  H02P2209/05

Abstract: An efficient and reliable power conversion method for converting an input voltage which is a single-phase AC voltage into output voltages forming a two-phase AC voltage includes: receiving an input voltage; designating, as a first target voltage representing consecutive target values of a first-phase output voltage and a second target voltage representing consecutive target values of a second-phase output voltage, AC voltages forming a two-phase AC voltage and having (i) an amplitude 1/√2 times smaller than an amplitude of the input voltage, and (ii) phase differences of +45 degrees and −45 degrees relative to the input voltage; and designating a frequency other than a frequency twice a frequency of the input voltage, as a frequency of the first target voltage and the second target voltage.

Abstract translation: 用于将作为单相交流电压的输入电压转换为形成两相交流电压的输出电压的有效且可靠的功率转换方法包括：接收输入电压; 指定表示表示第二相输出电压的连续目标值的第一目标电压和表示第二相输出电压的连续目标值的第二目标电压，形成两相AC电压的AC电压，并具有（i） 幅度比输入电压的幅度小1 /√2，和（ii）相对于输入电压+45度和-45度的相位差; 并将第二目标电压和第二目标电压的频率指定为不同于输入电压频率两倍的频率。