公开(公告)号：US20240266961A1

公开(公告)日：2024-08-08

申请号：US18567505

申请日：2021-07-14

Applicant: Mitsubishi Electric Corporation

Inventor： Atsushi MATSUDA ,  Satoshi OJIKA ,  Tomokazu SAKASHITA ,  Shinichiro OIKAWA

IPC: H02M3/158 ,  H02M1/00 ,  H02M1/44

CPC classification number: H02M3/1586 ,  H02M1/0009 ,  H02M1/44

Abstract: A first reactor current that flows in a first reactor and a second reactor current that flows in a second reactor are controlled by ON/OFF control over a first switching element and a second switching element. The control unit calculates a first operation amount and a second operation amount based on the first and second reactor currents detected by current detectors. The first operation amount defines an ON period of the first switching element. The second operation amount defines an ON period of the second switching element. The first and second operation amounts are calculated with non-interference control for suppressing mutual interference between the first and second reactor currents caused by magnetic coupling between the first reactor and the second reactor.

公开(公告)号：US20230188151A1

公开(公告)日：2023-06-15

申请号：US17923231

申请日：2020-06-30

Applicant: Mitsubishi Electric Corporation

Inventor： Atsushi MATSUDA ,  Satoshi OJIKA ,  Tomokazu SAKASHITA ,  Shinichiro OIKAWA

IPC: H03M1/12 ,  H03M1/00

CPC classification number: H03M1/1255 ,  H03M1/1225 ,  H03M1/002

Abstract: N (n is a natural number) power converters operate in accordance with a drive signal to generate a power to be supplied to a load. Multi-redundant A/D converters convert an analog detection value from the power converters into digital values. First and second controllers operate in parallel and each generate a drive signal of the power converters using the digital values from the A/D converters. A system selector selects one controller in accordance with an abnormality detection result of the first and second controllers. Each of n output selectors receives the drive signals from both of the first and second controllers and outputs the drive signal from the one controller selected by the system selector to the power converters.

公开(公告)号：US20220158500A1

公开(公告)日：2022-05-19

申请号：US17438937

申请日：2019-04-26

Applicant: Mitsubishi Electric Corporation

Inventor： Hirohisa KUWANO ,  Tomokazu SAKASHITA ,  Miyuki TAKESHITA ,  Hidehito YOSHIDA ,  Mariko SHIOZAKI ,  Takuya MIURA

IPC: H02J50/40 ,  H02J50/12 ,  H02J50/70 ,  H02J50/80 ,  B66B1/06 ,  B66B5/02

Abstract: An elevator includes a plurality of power transmission/reception devices each including: a power transmission coil connected to a main power supply; a power reception coil for receiving power transmitted from the power transmission coil and supplying power to a load; and an inverter which is provided between the main power supply and the power transmission coil, and which converts power supplied from the main power supply, to power having a predetermined frequency, and supplies the power to the power transmission coil, wherein the plurality of power transmission/reception devices are connected in parallel between the main power supply and the load. Since the inverters are individually connected to the power transmission coils, it is possible to efficiently supply power to the load even when using some of the power transmission coils.

公开(公告)号：US20200280184A1

公开(公告)日：2020-09-03

申请号：US16070931

申请日：2016-02-26

Applicant: Mitsubishi Electric Corporation

Inventor： Satoshi OJIKA ,  Tomokazu SAKASHITA ,  Toshio OKAMURA ,  Shinichiro OIKAWA

IPC: H02J1/10 ,  H02J1/14 ,  B64G1/44 ,  B64G1/42

Abstract: A power controller includes: a plurality of switching elements provided in one-to-one correspondence with a plurality of power supplies, and each of which switches on or off to switch between supplying and stopping supplying a load with electric power from a corresponding one of the plurality of power supplies; a processing unit which computes an operation amount for adjusting an amount of the electric power supplied to the load; and a signal generator which determines, for each control, a switching-element count indicating a total number of switching elements to be turned on among the plurality of switching elements, and a duty ratio of the switching-element count, based on the operation amount, and generates a drive signal for driving the plurality of switching elements successively, based on the switching-element count and the duty ratio.

公开(公告)号：US20190078520A1

公开(公告)日：2019-03-14

申请号：US15765632

申请日：2015-12-03

Applicant: MITSUBISHI ELECTRIC CORPORATION

Inventor： Takahiro INOUE ,  Taichiro TAMIDA ,  Takashi HASHIMOTO ,  Noboru WADA ,  Akira NAKAGAWA ,  Tomokazu SAKASHITA ,  Tetsuya HONDA

IPC: F02D19/12 ,  F02D41/00 ,  F02D41/04 ,  F02D41/10 ,  F02M25/10

CPC classification number: F02D19/12 ,  F02D41/0002 ,  F02D41/0025 ,  F02D41/045 ,  F02D41/10 ,  F02D2200/0406 ,  F02D2200/0414 ,  F02D2200/0418 ,  F02D2200/1002 ,  F02D2250/21 ,  F02M25/10 ,  Y02T10/42

Abstract: A change amount per unit time of an engine output command for controlling engine output of an internal combustion engine is calculated as an engine output increasing rate, and a power supply device is controlled so that power corresponding to the calculated engine output increasing rate is supplied to a combustion promoter generation device. The combustion promoter generation device generates a combustion promoter through the power supplied from the power supply device to supply the combustion promoter to a combustion chamber of the internal combustion engine, and a generation amount of the combustion promoter increases as the supplied power increases. In this manner, the generation amount of the combustion promoter is adjusted.