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10 条记录 (耗时 0.007 秒)

    CONTROL METHOD FOR ELECTRICAL CONVERTER WITH LC FILTER
    4.
    发明授权
    CONTROL METHOD FOR ELECTRICAL CONVERTER WITH LC FILTER 有权
    具有LC滤波器的电气转换器的控制方法

    公开(公告)号：EP3058646B1

    公开(公告)日：2018-04-11

    申请号：EP14780500.6

    申请日：2014-10-03

    申请人： ABB Schweiz AG

    发明人： AL-HOKAYEM, Peter ,  GEYER, Tobias ,  OIKONOMOU, Nikolaos

    IPC分类号： H02M1/00 ,  H02M1/12 ,  H02P21/14 ,  H02P23/14 ,  H02M7/5387 ,  H02P21/30 ,  H02P23/30

    CPC分类号： H02M1/126 ,  G05B2219/41406 ,  H02M7/53873 ,  H02M7/53875 ,  H02M2001/0003 ,  H02P21/141 ,  H02P21/30 ,  H02P23/14 ,  H02P23/30

    摘要： An electrical converter is interconnected via a filter with an electrical load or an electrical power source. A method for controlling the converter comprises the steps of: receiving a reference flux (ψ*i) for the electrical converter; determining output signals (y) comprising currents and/or voltages measured in the filter; determining an estimated flux (ψi) from the output signals (y); determining a corrective flux (ψi,damp) from the output signals (y) based on a mathematical model of the filter and a quadratic cost function; determining control input signals (u) for the electrical converter based on a sum of the estimated flux (ψi) and the corrective flux (ψi,damp); controlling the converter with the control input signals (u); and algorithmic filtering of at least one of the output signals (y) by applying a signal filter to the at least one output signal, which is designed for amplifying the at least one output signal at a resonance frequency of the filter, whereby the corrective flux (ψi,damp) is determined from the filtered output signals.

    POWER TOOL INCLUDING CURRENT-BASED FIELD WEAKENING
    6.
    发明公开
    POWER TOOL INCLUDING CURRENT-BASED FIELD WEAKENING 审中-公开

    公开(公告)号：EP4322394A1

    公开(公告)日：2024-02-14

    申请号：EP23188761.3

    申请日：2023-07-31

    申请人： Milwaukee Electric Tool Corporation

    发明人： GASPAR, Austin ,  NAGEL, Gerald M. ,  GUPTA, Shuvam ,  HUBER, Alexander T.

    IPC分类号： H02P21/22 ,  H02P23/30

    摘要： A power tool that includes a brushless motor, a power switching circuit, a current sensor, and an electronic controller. The power switching circuit provides a supply of power to the brushless motor. The current sensor is configured to sense a current of the brushless motor. The electronic controller is configured to receive a first signal indicative of current of the brushless motor, generate a current command, set a conduction angle of the brushless motor based on the current command, supply a PWM signal having a duty cycle to the brushless motor to increase current of the brushless motor, determine whether duty cycle equals a first threshold, maintain the duty cycle at the first threshold, modify the conduction angle to increase the current of the brushless DC motor, determine whether current equals a second threshold, and control the second conduction angle to maintain current at the second threshold.

    Drive control apparatus and method of alternating current motor
    7.
    发明授权
    Drive control apparatus and method of alternating current motor 有权

    公开(公告)号：EP1263125B1

    公开(公告)日：2018-12-05

    申请号：EP02011960.8

    申请日：2002-05-29

    申请人： TOYOTA JIDOSHA KABUSHIKI KAISHA

    发明人： Koide, Satoshi ,  Yamada, Eiji

    IPC分类号： H02P21/20 ,  H02P23/30

    CPC分类号： H02P21/00 ,  H02P21/20 ,  H02P23/30 ,  H02P2205/05

    摘要： A drive control apparatus and method drives an AC motor (52) by applying a rectangular wave voltage thereto. The apparatus estimates the torque of a rotor of the AC motor, and detects a torque deviation which is the difference between the estimated torque and a required torque of the motor. A controller controls a state of the rectangular wave voltage applied to the AC motor, through torque feedback control based on the torque deviation, so that the torque approaches the torque command value. The controller detects a current rotation speed of the motor, and switches, in a predetermined order, a plurality of predetermined rectangular wave voltage states corresponding to different phase values of the rectangular wave voltage. The switching timing of the rectangular wave voltage states is set to a timing that deviates from a reference timing determined based on the current rotation speed, by a length of time corresponding to the torque deviation.

    Verfahren und Vorrichtung zur direkten Drehmomentregelung einer Drehfeldmaschine
    8.
    发明公开
    Verfahren und Vorrichtung zur direkten Drehmomentregelung einer Drehfeldmaschine 失效
    用于多相电机的直接转矩控制的方法和装置

    公开(公告)号：EP0800265A3

    公开(公告)日：1998-12-02

    申请号：EP97810117

    申请日：1997-03-03

    申请人： ASEA BROWN BOVERI

    发明人： POHJALAINEN PASI ,  STULZ CHRISTIAN DR

    IPC分类号： H02P27/06 ,  H02P21/30 ,  H02P23/30 ,  H02P21/00

    CPC分类号： H02M1/12 ,  H02P21/30 ,  H02P23/30

    摘要： Es wird ein Verfahren und eine Vorrichtung zur Direkten Drehmomentregelung für eine über ein Sinus-Filter gespeiste Drehfeldmaschine angegeben, das möglichst ohne grosse Anpassung an bereits bekannte DTC-Verfahren bzw. DTC-Vorrichtungen auskommt. Zudem sollen die durch das Filter bedingten Oszillationen wirksam gedämpft werden. Diese wird dadurch gelöst, dass ein durch das Filter fliessender Strom und/oder eine Filterausgangsspannung gemessen wird und der Fluss-Sollwert und der Drehmoment-Sollwert nach Massgabe der gemessenen Spannung und/oder des gemessenen Stromes korrigiert werden. Die Korrektur umfasst eine Transformation der Filterausgangsspannung in eine erste zu einem Statorfluss senkrechte und eine zweite zum Statorfluss parallele Komponente sowie eine Verminderung der Drehmoment- und Fluss-Sollwerte proportional zum oszillierenden Teil der Filterausgangsspannung.