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公开(公告)号：US11993479B2
公开(公告)日：2024-05-28
申请号：US17672150
申请日：2022-02-15
申请人： KONE Corporation
发明人： Mikko Paakkinen , Lauri Stolt , Tuukka Kauppinen
摘要： An electrical converter unit and a method for reducing thermal stress of a power semiconductor switch, such as an IGBT, of an electrical converter unit, the electrical converter unit comprising at least a gate control circuit wherein the electrical converter unit controls an electrical motor. The method comprises determining load and estimating required motor current based on the determined load and/or a predetermined speed profile. The electrical converter unit has at least a first operating state and a second operating state. The second operating state is used if predetermined criteria is fulfilled, the predetermined criteria relating to at least one of the following: estimated required current, measured motor speed, temperature of the power semiconductor switch and/or electrical converter unit, temperature model of the power semiconductor switch and/or electrical converter unit. In the second operating state a lower switching frequency of the power semiconductor switch is used than in the first operating state, and in the second operating state a higher switching speed of the power semiconductor switch is used than in the first operating state.
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公开(公告)号：US11733995B2
公开(公告)日：2023-08-22
申请号：US17241501
申请日：2021-04-27
申请人： Kone Corporation
发明人： Tuukka Kauppinen , Risto Jokinen , Mikko Paakkinen
CPC分类号： G06F8/656 , B66B25/00 , B66B25/003 , G06F8/433 , G06F8/61 , G06F8/71 , H04L9/0822
摘要： A method for performing a software update of a people conveyor component in a conveyor system includes downloading a software update from a remote update system based on a request from one or more of the remote update system, at least one conveyor component or the conveyor system such that the software update is downloaded as a background download without affecting an operation of the conveyor system.
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公开(公告)号：US11855571B2
公开(公告)日：2023-12-26
申请号：US16388448
申请日：2019-04-18
申请人： KONE Corporation
发明人： Mikko Paakkinen
CPC分类号： H02P3/22 , B66B5/02 , B66B11/043 , F16D63/002 , H02P2207/05
摘要： A method for dynamic braking of a permanent magnet motor, and an elevator utilizing thereof, are presented. The arrangement includes a corresponding number of phase legs and input connectors relative to a number of the plurality of motor windings, wherein each one of the input connectors is coupled to a respective one of the phase legs. At least some of the phase legs comprise at least two semiconductor devices. Second terminals of the phase legs are connected to each other, wherein the arrangement includes a number of semiconductor switches configured for forming a short-circuit between each of the plurality of motor windings.
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公开(公告)号：US20220169479A1
公开(公告)日：2022-06-02
申请号：US17672150
申请日：2022-02-15
申请人： KONE Corporation
发明人： Mikko Paakkinen , Lauri Stolt , Tuukka Kauppinen
IPC分类号： B66B1/30 , H02M1/08 , H02M7/5395 , B66B1/28
摘要： An electrical converter unit and a method for reducing thermal stress of a power semiconductor switch, such as an IGBT, of an electrical converter unit, the electrical converter unit comprising at least a gate control circuit wherein the electrical converter unit controls an electrical motor. The method comprises determining load and estimating required motor current based on the determined load and/or a predetermined speed profile. The electrical converter unit has at least a first operating state and a second operating state. The second operating state is used if predetermined criteria is fulfilled, the predetermined criteria relating to at least one of the following: estimated required current, measured motor speed, temperature of the power semiconductor switch and/or electrical converter unit, temperature model of the power semiconductor switch and/or electrical converter unit. In the second operating state a lower switching frequency of the power semiconductor switch is used than in the first operating state, and in the second operating state a higher switching speed of the power semiconductor switch is used than in the first operating state.
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5.发明授权公开(公告)号：US11218097B2
公开(公告)日：2022-01-04
申请号：US16794623
申请日：2020-02-19
申请人： KONE Corporation
发明人： Tuukka Kauppinen , Lauri Stolt , Mikko Paakkinen
摘要： A method for determining a rotor position of an electric motor, an elevator and an electrical converter unit are presented. The method comprises supplying a first excitation signal to the electric motor, determining a first response signal generated in the motor in response to the first excitation signal, determining, based on the first response signal, an electrical angle of a direct axis of the motor with respect to a stationary reference frame, supplying a second excitation signal to the motor, wherein the second excitation signal is based on the determined electrical angle, determining a second response signal generated in the motor in response to the second excitation signal, and determining the rotor position based on the second response signal.
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公开(公告)号：US20210300722A1
公开(公告)日：2021-09-30
申请号：US17184715
申请日：2021-02-25
申请人： KONE Corporation
发明人： Lauri Stolt , Mikko Paakkinen , Tuukka Kauppinen
摘要： A method for identifying parameters, such as a magnetization-axis and torque-axis inductances, of a permanent magnet motor of an elevator includes applying, such as by a brake controller, at least one hoisting machinery brake to prevent rotation of a rotor of the permanent magnet motor, determining, by a first method, a mean value of motor inductance, as well as the magnetization-axis inductance and the torque-axis inductance as relative inductance values based on the mean value, determining, by a second method, being different than the first method, a mean value of motor main inductances, and determining absolute values of the magnetization-axis and the torque axis inductances based on the motor main inductance obtained by the second method and the relative inductance values obtained by the first method.
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7.发明申请公开(公告)号：US20200287485A1
公开(公告)日：2020-09-10
申请号：US16794623
申请日：2020-02-19
申请人： KONE Corporation
发明人： Tuukka Kauppinen , Lauri Stolt , Mikko Paakkinen
摘要： A method for determining a rotor position of an electric motor, an elevator and an electrical converter unit are presented. The method comprises supplying a first excitation signal to the electric motor, determining a first response signal generated in the motor in response to the first excitation signal, determining, based on the first response signal, an electrical angle of a direct axis of the motor with respect to a stationary reference frame, supplying a second excitation signal to the motor, wherein the second excitation signal is based on the determined electrical angle, determining a second response signal generated in the motor in response to the second excitation signal, and determining the rotor position based on the second response signal.
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