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公开(公告)号：US20230402942A1
公开(公告)日：2023-12-14
申请号：US18033586
申请日：2021-11-18
申请人： Mitsubishi Electric Corporation , National University Corporation Nagaoka University of Technology
发明人： Tenjiro HIWATARI , Sota SANO , Akira SATAKE , Kiyoshi OHISHI , Yuki YOKOKURA , Yuto KOBAYASHI
IPC分类号： H02M7/5395 , H02P27/08 , H02M1/00
CPC分类号： H02M7/5395 , H02P27/08 , H02M1/0058
摘要： A power conversion device comprises: power conversion circuitry for converting DC power into AC power and supplying it into a load according to a switching state quantity defined by combinations among switching parameters of switching devices; a voltage output calculation device for calculating a voltage output value on the power conversion circuitry, based on the switching state quantity; an integration value calculation device for acquiring a voltage reference integration value and a voltage output integration value by integrating a voltage reference value and the calculated voltage output value; a switching update-determination unit for outputting an update signal of the switching state quantity, based on the voltage reference integration value, its allowance value, and the voltage output integration value; and a switching determination table for determining a switching state quantity of the switching devices, based on the voltage reference integration value, the voltage output integration value and the update signal.
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公开(公告)号：US20210203261A1
公开(公告)日：2021-07-01
申请号：US16754755
申请日：2017-12-07
申请人： Mitsubishi Electric Corporation , National University Corporation Nagaoka University of Technology
发明人： Sota SANO , Akira SATAKE , Kiyoshi OHISHI , Yuki YOKOKURA , Tenjiro HIWATARI
IPC分类号： H02P27/06 , H02P21/22 , H02M7/5387
摘要： The present invention includes a control amount calculation unit which calculates two or more control amounts each indicating a driving condition of a rotary electric machine on the basis of output current from and a switching state in a power converter; a limitation range-provided command value generation unit which generates limitation range-provided command values relative to command values for the control amounts; and a switching state determination unit which determines a switching state such that each control amount falls within the limitation range of the corresponding limitation range-provided command value. For at least one of the limitation range-provided command values, the limitation range thereof is temporally changed on the basis of the driving condition of the rotary electric machine.
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公开(公告)号：US20210391817A1
公开(公告)日：2021-12-16
申请号：US17287128
申请日：2019-04-23
发明人： Sota SANO , Akira SATAKE , Shinsaku KUSUBE
IPC分类号： H02P27/08 , H02M7/5395 , G06N20/00
摘要： This power conversion device includes: a current detection unit for detecting current flowing through a rotary electric machine; a switching pattern determination unit for determining a switching pattern on the basis of the detected current, a current prediction value, a current command value, and a current harmonic command value; and a power conversion unit for outputting AC power to the rotary electric machine in accordance with the switching pattern, wherein the switching pattern determination unit determines the switching pattern so that the current value follows the current command value and the current harmonic becomes equal to or smaller than a limit value.
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4.发明申请公开(公告)号：US20200217895A1
公开(公告)日：2020-07-09
申请号：US16644168
申请日：2017-10-24
发明人： Makoto KANEMARU , Takuya OHKUBO , Sota SANO , Akira SATAKE , Satoru TERASHIMA
IPC分类号： G01R31/34 , H02H7/08 , H02P29/024
摘要： An abnormality diagnosis device includes: a data acquirer to acquire a current waveform and a driving frequency of an electric motor; a storage which stores a combination of a current value of the current waveform and the driving frequency at an identical time by the data acquirer; a data determiner to determine whether or not a current value of the current waveform and the driving frequency as a diagnosis target at an identical time by the data acquisition match the combination stored in the storage; an analyzer to perform frequency analysis for the current waveform determined to be matched by the data determiner, to extract sideband waves, and calculate a spectrum intensity of the sideband waves; and an abnormality diagnosis processor to make a diagnosis that abnormality has occurred, when the spectrum intensity of the sideband waves is equal to or greater than a threshold.
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公开(公告)号：US20240250626A1
公开(公告)日：2024-07-25
申请号：US18576764
申请日：2021-08-03
发明人： Akira SATAKE , Tenjiro HIWATARI , Atsushi YAMAMOTO
CPC分类号： H02P23/04 , H02K49/102 , H02P15/00 , H02P23/26
摘要： A magnetic gear embedded rotating electric machine control device, which controls voltage applied to a stator winding of a rotating electric machine having a magnetic gear therein so that an output from the rotating electric machine follows an output command, includes: a damping command generator which generates a damping command using an angle between a stator and a high-speed rotor of the rotating electric machine detected by an angle detector; a first adder which adds the damping command to the output command, to generate a corrected output command; and an output controller which controls an output generated by the rotating electric machine, in accordance with the corrected output command.
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公开(公告)号：US20220231627A1
公开(公告)日：2022-07-21
申请号：US17613954
申请日：2019-07-25
发明人： Akane HONGYO , Akira SATAKE
摘要： A rotary machine control device includes a voltage application unit that applies a voltage to a rotary machine with three phases, a current detection unit that outputs current information representing information on a current caused to flow to the rotary machine by application of the voltage, a control unit that outputs a voltage command to apply a voltage between each of pairs of the phases of the rotary machine, and an open phase determination unit that performs open phase determination to determine whether an open phase occurs in the rotary machine, by detecting the values of currents flowing between the respective pairs of the phases by monitoring the voltage command and the current information, and by comparing the sum of the values of the currents flowing between the respective pairs of the phases with a predetermined reference value.
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公开(公告)号：US20210344294A1
公开(公告)日：2021-11-04
申请号：US17279589
申请日：2019-01-23
发明人： Akane HONGYO , Akira SATAKE , Kenji TAKAHASHI
IPC分类号： H02P25/18 , H02P29/024 , H02P27/06 , F25B31/02
摘要： A rotary-machine control device includes: a connection switching device switching a connection state of stator windings of a rotary machine; a current detection unit detecting a rotary machine current flowing in the rotary machine; a voltage application unit applying voltage to the rotary machine; a control unit generating a voltage command provided to the voltage application unit and outputting a switching command to switch the connection state to the connection switching device; and an open-phase determination unit determining presence or absence of disconnection in the rotary machine or presence or absence of disconnection of a power distribution line to the rotary machine. During rotation of the rotary machine, the control unit outputs the switching command and the open-phase determination unit determines presence or absence of disconnection.
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公开(公告)号：US20160084546A1
公开(公告)日：2016-03-24
申请号：US14891903
申请日：2014-05-21
发明人： Tetsuhide YOKOYAMA , Yosuke SHINOMOTO , Shogo MOROE , Akira SATAKE , Masashi FUJITSUKA , Takeshi MORI , Taro KATO , Hideaki MAEYAMA , Keiko TADA
CPC分类号： F25B30/02 , F04C18/356 , F04C23/001 , F04C23/008 , F04C28/02 , F04C28/065 , F04C28/08 , F04C29/04 , F04C2270/80 , F04C2270/86 , F25B1/02 , F25B13/00 , F25B31/026 , F25B49/022 , F25B2313/0314 , F25B2313/0315 , F25B2400/074 , F25B2600/021 , F25B2700/2104 , F25B2700/2106 , Y02B30/741
摘要： A heat pump apparatus, including: a two-cylinder compressor including: an electric motor; two compression units to be driven by the electric motor, the two-cylinder compressor being structured to switch between two operation modes including single operation in which one of the compression units is brought into a non-compression state, and parallel operation in which both the compression units are brought into a compression state; an inverter drive control device supplying drive power to the electric motor of the two-cylinder compressor; an operation mode detecting-determining unit determining a current operation mode based on an electric signal acquired from the inverter drive control device; and a capacity control device determining a rotating frequency of the electric motor so that a temperature of a target object is brought close to a set value, to thereby control the inverter drive control device based on a result of determination of the operation mode detecting-determining unit.
摘要翻译： 一种热泵装置，包括：双缸压缩机，包括：电动机; 由电动机驱动的两个压缩单元，两缸压缩机被构造成在包括一个压缩单元进入非压缩状态的单个操作的两种操作模式之间切换，并且其中两个压缩单元 压缩单元进入压缩状态; 向双缸压缩机的电动机供给驱动力的逆变器驱动控制装置; 操作模式检测确定单元，基于从逆变器驱动控制装置获取的电信号来确定当前操作模式; 以及容量控制装置，其确定所述电动机的旋转频率，使得所述目标对象的温度接近设定值，从而基于所述操作模式检测确定的确定结果控制所述逆变器驱动控制装置 单元。
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公开(公告)号：US20230336090A1
公开(公告)日：2023-10-19
申请号：US18042475
申请日：2020-10-26
发明人： Takaaki TAKAHARA , Koichi ARISAWA , Keisuke UEMURA , Haruka MATSUO , Koyo MATSUZAKI , Kenji TAKAHASHI , Akira SATAKE , Hajime TOYODA
摘要： A power conversion apparatus includes a rectification unit that rectifies a first alternating-current power supplied from a commercial power supply; a capacitor connected to output terminals of the rectification unit; an inverter that is connected across the capacitor, converts power output from the rectification unit and the capacitor into a second alternating-current power and, outputs the second alternating-current power to a load including a motor; and a control unit that performs operation control on the inverter to cause the second alternating-current power that includes a pulsation based on a pulsation of power that flows into the capacitor from the rectification unit to be output from the inverter to the load, to restrain a current that flows into the capacitor.
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10.发明申请公开(公告)号：US20210242815A1
公开(公告)日：2021-08-05
申请号：US17052574
申请日：2018-07-18
IPC分类号： H02P25/18 , H02P25/24 , H02P25/022
摘要： A controller includes: a connection switch that switches a connection state of a winding of a synchronous motor during a rotating operation of the synchronous motor; a current detector that detects a rotary machine current flowing in the synchronous motor; a position/speed estimator that estimates a magnetic pole position and speed of a rotor; a voltage applicator that applies a voltage to the synchronous motor; and a control circuitry that generates a voltage command given to the voltage applicator on the basis of the magnetic pole position and the speed, and outputs a switching operation command for switching the connection state to the connection switch. The control circuitry generates the voltage command to bring the rotary machine current close to zero before the connection state of the winding is switched.
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