利索-全球专利检索

  1. Login
  2. Sign Up

Search Results

75 records (took 0.016 seconds)

    DC POWER-SUPPLY DEVICE AND REFRIGERATION-CYCLE APPLICATION DEVICE INCLUDING THE SAME
    22.
    发明申请
    DC POWER-SUPPLY DEVICE AND REFRIGERATION-CYCLE APPLICATION DEVICE INCLUDING THE SAME 有权
    直流电源装置和包括其的制冷循环应用装置

    公开(公告)号：US20160241073A1

    公开(公告)日：2016-08-18

    申请号：US15024393

    申请日：2013-11-26

    Applicant: MITSUBISHI ELECTRIC CORPORATION

    Inventor： Kazunori HATAKEYAMA ,  Keisuke UEMURA ,  Yosuke SHINOMOTO

    IPC: H02J7/00 ,  H02M1/42 ,  H02M7/5395 ,  H02M1/12 ,  H02P27/08 ,  H02M7/06

    CPC classification number: H02J7/0072 ,  H02J7/0026 ,  H02J7/345 ,  H02M1/12 ,  H02M1/32 ,  H02M1/4216 ,  H02M1/4225 ,  H02M3/158 ,  H02M7/06 ,  H02M7/487 ,  H02M7/5387 ,  H02M7/5395 ,  H02M2001/007 ,  H02P27/085 ,  H02P2201/09 ,  Y02B70/126

    Abstract: The DC power-supply device includes a rectifier circuit rectifying an alternating current, a reactor connected to an input or output side of the rectifier circuit, a first capacitor and a second capacitor serially connected between output terminals to a load, and a charging unit that selectively charges one or both of the first capacitor and the second capacitor. A ratio, to a period obtained by combining a charging period and a non-charging period of a pair of the first capacitor and the second capacitor, of the non-charging period, is controlled according to an operating condition of the load, to change a charging frequency of the first capacitor and the second capacitor based on the ratio, at the time of controlling an output voltage to the load.

    Abstract translation: 直流电源装置包括整流电路的整流电路，连接到整流电路的输入或输出侧的电抗器，串联连接到负载的输出端子之间的第一电容器和第二电容器，以及充电单元， 选择性地对第一电容器和第二电容器中的一者或两者进行充电。 根据负载的运行状态来控制与非充电期间的一对第一电容器和第二电容器的充电期间和非充电期间的组合所获得的期间的比率， 基于在控制对负载的输出电压时的比率的第一电容器和第二电容器的充电频率。

    HEAT PUMP DEVICE, AND AIR CONDITIONER, HEAT PUMP WATER HEATER, REFRIGERATOR, AND FREEZING MACHINE INCLUDING HEAT PUMP DEVICE
    23.
    发明申请
    HEAT PUMP DEVICE, AND AIR CONDITIONER, HEAT PUMP WATER HEATER, REFRIGERATOR, AND FREEZING MACHINE INCLUDING HEAT PUMP DEVICE 有权
    热泵装置，空调器，热泵水加热器，制冷机和冷冻机，包括热泵装置

    公开(公告)号：US20160146523A1

    公开(公告)日：2016-05-26

    申请号：US14787288

    申请日：2013-05-23

    Applicant: MITSUBISHI ELECTRIC CORPORATION

    Inventor： Kazunori HATAKEYAMA ,  Shota KAMIYA ,  Kenta YUASA ,  Shinya MATSUSHITA ,  Shinsaku KUSUBE

    IPC: F25B49/02

    CPC classification number: F25B49/025 ,  F25B1/10 ,  F25B13/00 ,  F25B40/00 ,  F25B2313/003 ,  F25B2341/0662 ,  F25B2400/13 ,  F25B2600/021 ,  H02M7/5395 ,  Y02B30/741

    Abstract: A heat pump device capable of efficiently and reliably preventing a liquid refrigerant from stagnating in a compressor an air conditioner, a heat pump water heater, a refrigerator, and a freezing machine including the heat pump device. The configuration is such that, when the compressor is under operation standby, a high-frequency voltage synchronizing with a carrier signal is supplied to the compressor motor to carry out the locked energization of the compressor motor. From respective inter-phase voltages, respective phase voltages, or respective phase currents of the compressor motor for a plurality of high-frequency energization cycles, the detection values for one high-frequency energization cycle are restored. A power value calculated using the restored detection values for one high-frequency energization cycle is controlled to coincide with a heating power command necessary for discharging the liquid refrigerant stagnated in the compressor to the outside of the compressor.

    Abstract translation: 一种热泵装置，其能够有效且可靠地防止液体制冷剂在空调机，热泵热水器，冰箱和包括该热泵装置的冷冻机中停滞在压缩机中。 该结构使得当压缩机处于待机状态时，与载波信号同步的高频电压被提供给压缩机马达，以执行压缩机马达的锁定通电。 从多个高频通电周期的压缩机电动机的各相电压，各相电压或各相电流可以恢复一个高频通电周期的检测值。 控制使用恢复的一个高频通电循环的检测值计算出的功率值，以使与滞留在压缩机中的液体制冷剂排出到压缩机外部所需的加热功率指令一致。

    HEAT PUMP APPARATUS, AIR CONDITIONER, AND REFRIGERATION MACHINE
    24.
    发明申请
    HEAT PUMP APPARATUS, AIR CONDITIONER, AND REFRIGERATION MACHINE 有权

    公开(公告)号：US20250030370A1

    公开(公告)日：2025-01-23

    申请号：US18712832

    申请日：2022-01-31

    Applicant: Mitsubishi Electric Corporation

    Inventor： Yuichi SHIMIZU ,  Kazunori HATAKEYAMA

    IPC: H02P27/08 ,  F25B31/02

    Abstract: A heat pump apparatus includes: an inverter that applies a high-frequency voltage to a motor that drives a compressor, the high-frequency voltage having a frequency higher than or equal to an operation frequency of the compressor; and an inverter controller that switches between positive and negative directions of an output voltage output from the inverter every half period of a carrier signal, the carrier signal being used for generating a switching signal, the switching signal controlling whether each of the switching elements is on or off. The inverter controller prohibits switching between positive and negative directions of the output voltage in a first time period, the first time period being a time period of an integer multiple of two or more times the half period of the carrier signal.

    POWER CONVERTER AND AIR CONDITIONER
    25.
    发明公开
    POWER CONVERTER AND AIR CONDITIONER 审中-公开

    公开(公告)号：US20240333134A1

    公开(公告)日：2024-10-03

    申请号：US18563425

    申请日：2021-07-28

    Applicant: Mitsubishi Electric Corporation

    Inventor： Atsushi TSUCHIYA ,  Kazunori HATAKEYAMA ,  Yuichi SHIMIZU

    IPC: H02M1/12 ,  H02M7/5388 ,  H02P27/08

    CPC classification number: H02M1/126 ,  H02M7/5388 ,  H02P27/085

    Abstract: A power converter including: a non-boost rectifier circuit that converts a first alternating-current voltage into a direct-current voltage; a reactor connected to the rectifier circuit; a capacitor that smooths a direct-current voltage; an inverter that is connected in parallel to the capacitor, converts the smoothed direct-current voltage into a second alternating-current voltage having desired voltage and frequency, and outputs the second alternating-current voltage to a motor; and a controller that controls an operation of the inverter. Capacitances of the reactor and the capacitor are set such that a resonance frequency of a filter circuit including the reactor and the capacitor is smaller than a first electrical angular frequency based on a voltage command when the controller controls an operation of the inverter such that the second alternating-current voltage is maximized in a range not causing overmodulation.

    POWER CONVERTER, MOTOR DRIVE CONTROLLER, BLOWER, COMPRESSOR, AND AIR CONDITIONER
    27.
    发明申请
    POWER CONVERTER, MOTOR DRIVE CONTROLLER, BLOWER, COMPRESSOR, AND AIR CONDITIONER 有权

    公开(公告)号：US20230092110A1

    公开(公告)日：2023-03-23

    申请号：US17800444

    申请日：2020-04-25

    Applicant: Mitsubishi Electric Corporation

    Inventor： Satoru ICHIKI ,  Koichi ARISAWA ,  Kazunori HATAKEYAMA ,  Takahiko KOBAYASHI

    IPC: H02P27/06 ,  F24F11/88 ,  H01L25/16 ,  H01L23/00 ,  H01L23/367 ,  H01L23/498 ,  H02M3/156

    Abstract: A power converter for converting a voltage of direct-current power output from a direct-current power supply, the power converter including: a printed circuit board; a reactor being configured with a conductor pattern of the printed circuit board; a semiconductor element that is connected to another end of the reactor and performs switching for storing electrical energy in the reactor so as to boost the voltage of the direct-current power from a first voltage to a second voltage; a capacitor that smooths the direct-current power boosted to the second voltage; a diode that is connected to the another end of the reactor and supplies the direct-current power boosted to the second voltage to the capacitor; and a cooler, wherein the reactor, the semiconductor element, and the diode are included in a module in a single package, and the module is cooled by the cooler.

    MOTOR DRIVING APPARATUS AND AIR CONDITIONER USING THE SAME
    28.
    发明申请
    MOTOR DRIVING APPARATUS AND AIR CONDITIONER USING THE SAME 有权

    公开(公告)号：US20210359634A1

    公开(公告)日：2021-11-18

    申请号：US17281043

    申请日：2018-11-07

    Applicant: Mitsubishi Electric Corporation

    Inventor： Atsushi TSUCHIYA ,  Keisuke UEMURA ,  Kazunori HATAKEYAMA

    IPC: H02P27/08 ,  H02M7/5387

    Abstract: A motor driving apparatus for driving a motor, the apparatus being connected to the motor by first, second, and third connection lines respectively corresponding to first, second, and third phases, the apparatus including: an inverter converting direct-current voltage into three-phase alternating-current voltage by using first, second, and third switching element pairs respectively connected to the first, second, and third connection lines, and outputting the three-phase alternating-current voltage to the motor; a voltage detection circuit detecting a first voltage based on a potential difference between a potential of the first connection line and a reference potential; and a control unit calculating a voltage value of the direct-current voltage based on the first voltage during a first period in which an upper-arm switching element of the first switching element pair is on, controlling operation of the inverter according to the voltage value, and changing the first period according to the voltage value.

Patent Agency Ranking