公开(公告)号：US20220368231A1

公开(公告)日：2022-11-17

申请号：US17677483

申请日：2022-02-22

Applicant: Mitsubishi Electric Corporation

Inventor： Akinu NAKABAYASHI ,  Takashi KANEYAMA ,  Matahiko IKEDA ,  Shingo KATO ,  Ryota KONDO ,  Hiroki KURAHASHI

IPC: H02M3/158 ,  H02M1/00 ,  H02M1/096

Abstract: To provide a controller for power conversion circuit which can maintain the detection value of second voltage at the target value of second voltage without depending on feedback control, when the first voltage is varied. A controller for power conversion circuit changes a control value by feedback control so that the detection value of second voltage approaches a target value of second voltage; calculates a control value for control, by correcting the control value based on the detection value of first voltage so as to correct, in feedforward manner, a change of the control value due to a change of the first voltage if correction of the control value is not performed; and controls on/off the switching device based on the control value for control.

公开(公告)号：US20220077765A1

公开(公告)日：2022-03-10

申请号：US17388122

申请日：2021-07-29

Applicant: Mitsubishi Electric Corporation

Inventor： Takashi KANEYAMA

IPC: H02M1/32 ,  H02M3/155 ,  H02M1/088 ,  H02M1/00

Abstract: The objective is to provide a function of detecting loss of a current detection function, at a time when a switching device has an open failure, in an arm that has the current detection function and a temperature detection function and in which two or more switching devices are connected in parallel with one another. A switching apparatus includes a current detector and a temperature detector provided in at least one of the two or more switching devices that are connected in parallel with one another and a controller that determines an overcurrent in the switching device in which the current detector is provided, that determines an overheating state and a temperature-rising failure in the switching device in which the temperature detector is provided, based on an output of the temperature detector, and that controls the switching devices.

公开(公告)号：US20200153333A1

公开(公告)日：2020-05-14

申请号：US16610579

申请日：2017-06-09

Applicant: Mitsubishi Electric Corporation

Inventor： Kazushi MAEDA ,  Masaki SAWAMURA ,  Hiroaki TANIHARA ,  Nobuhiro KIHARA ,  Yuta KOMATSU ,  Takashi KANEYAMA

IPC: H02M3/158 ,  H02P7/292 ,  H02M1/32

Abstract: With respect to a failure in voltage sensors each for detecting a high-voltage-side voltage in a DC/DC converter, it is so arranged that a circuit failure of the DC/DC converter is prevented, and that the DC/DC converter is continuingly controlled. Two voltage sensors are included therein each for detecting a high-voltage-side voltage, so that, even when a first voltage sensor for detecting a high-voltage-side voltage on one side fails to work properly, a control device turns on a second switching device, and detects a voltage by a second voltage sensor for detecting the high-voltage-side voltage on the other side, whereby a failure of the voltage sensor for detecting the high-voltage-side voltage is detected.