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公开(公告)号：US20190238080A1
公开(公告)日：2019-08-01
申请号：US16312383
申请日：2017-07-05
Applicant: Danfoss Power Electronics A/S
Inventor： Leandro Della Flora , Anton Smith
Abstract: A method and apparatus is described in which a series of short-circuiting pulses is applied to a motor. A current in the motor is determined after one or more of the series of short circuit pulses has completed. The duration of the short-circuit pulses is adjusted depending on the determined current. The method and apparatus may be used within an arrangement for catching a spinning motor.
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公开(公告)号：US11323044B2
公开(公告)日：2022-05-03
申请号：US15492076
申请日：2017-04-20
Applicant: Danfoss Power Electronics A/S
Inventor： Leandro Della Flora , William Giewont , David Michaud , Dan Isaksson , Andreas Doktar
Abstract: A circuit comprising a first power node for connection to a positive voltage of a DC link, a second power node for connection to a negative voltage of the DC link and a mid-point power node for connection to a mid-point voltage of the DC-link, the circuit further comprising a three-level neutral point clamped converter module and a brake resistor connection.
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公开(公告)号：US20220231616A1
公开(公告)日：2022-07-21
申请号：US17711357
申请日：2022-04-01
Applicant: Danfoss Power Electronics A/S
Inventor： Leandro Della Flora , William Giewont , David Michaud , Dan Isaksson , Andreas Doktar
Abstract: A circuit comprising a first power node for connection to a positive voltage of a DC link, a second power node for connection to a negative voltage of the DC link and a mid-point power node for connection to a mid-point voltage of the DC-link, the circuit further comprising a three-level neutral point clamped converter module and a brake resistor connection.
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公开(公告)号：US10812003B2
公开(公告)日：2020-10-20
申请号：US16312383
申请日：2017-07-05
Applicant: Danfoss Power Electronics A/S
Inventor： Leandro Della Flora , Anton Smith
Abstract: A method and apparatus is described in which a series of short-circuiting pulses is applied to a motor. A current in the motor is determined after one or more of the series of short circuit pulses has completed. The duration of the short-circuit pulses is adjusted depending on the determined current. The method and apparatus may be used within an arrangement for catching a spinning motor.
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Patent Agency Ranking
公开(公告)号：US10461679B2
公开(公告)日：2019-10-29
申请号：US16064502
申请日：2017-01-04
Applicant: Danfoss Power Electronics A/S
Inventor： Leandro Della Flora , Anton Smith
Abstract: A method and apparatus for catching a rotating motor is described. Switches (typically the lower switches) of an inverter of a motor drive circuit are short-circuited for a brief period of time. The pulses generated by this process are analyzed to determine the speed and direction of rotation of the motor. The pulses are checked to determine whether they are orthogonal. If they are, the motor velocity determination is deemed to be reliable and then motor is magnetized and normal motor control can be resumed. If not, the motor velocity determination is deemed to be unreliable and a magnetization pulse before the velocity determination step is repeated.
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公开(公告)号：US20180309380A1
公开(公告)日：2018-10-25
申请号：US15492076
申请日：2017-04-20
Applicant: Danfoss Power Electronics A/S
Inventor： Leandro Della Flora , William Giewont , David Michaud , Dan Isaksson , Andreas Doktar
CPC classification number: H02M7/217 , H02M1/08 , H02M2001/0038
Abstract: A circuit comprising a first power node for connection to a positive voltage of a DC link, a second power node for connection to a negative voltage of the DC link and a mid-point power node for connection to a mid-point voltage of the DC-link, the circuit further comprising a three-level neutral point clamped converter module and a brake resistor connection.
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公开(公告)号：US11522467B2
公开(公告)日：2022-12-06
申请号：US17711357
申请日：2022-04-01
Applicant: Danfoss Power Electronics A/S
Inventor： Leandro Della Flora , William Giewont , David Michaud , Dan Isaksson , Andreas Doktar
Abstract: A circuit comprising a first power node for connection to a positive voltage of a DC link, a second power node for connection to a negative voltage of the DC link and a mid-point power node for connection to a mid-point voltage of the DC-link, the circuit further comprising a three-level neutral point clamped converter module and a brake resistor connection.
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公开(公告)号：US09742260B2
公开(公告)日：2017-08-22
申请号：US14895298
申请日：2014-06-10
Applicant: Danfoss Power Electronics A/S
Inventor： Leandro Della Flora
Abstract: A method of initiating a grid-tied inverter is described, in which in-rush currents and DC overvoltage conditions are reduced or avoided. The method uses a pulse width modulator to drive the inverter under the control of a voltage feedforward signal such that the inverter output is dependent on the measured grid voltage. Then, an AC current feedback controller is enabled and the pulse width modulator is used to drive the inverter under the control of both the voltage feedforward control signal and the feedback control signal.
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公开(公告)号：US20160105093A1
公开(公告)日：2016-04-14
申请号：US14895298
申请日：2014-06-10
Applicant: DANFOSS POWER ELECTRONICS A/S
Inventor： Leandro Della Flora
Abstract: A method of initiating a grid-tied inverter is described, in which in-rush currents and DC overvoltage conditions are reduced or avoided. The method uses a pulse width modulator to drive the inverter under the control of a voltage feedforward signal such that the inverter output is dependent on the measured grid voltage. Then, an AC current feedback controller is enabled and the pulse width modulator is used to drive the inverter under the control of both the voltage feedforward control signal and the feedback control signal.
Abstract translation: 描述了启动并联逆变器的方法，其中降低或避免了浪涌电流和DC过电压条件。 该方法使用脉宽调制器在电压前馈信号的控制下驱动逆变器，使得逆变器输出取决于测量的电网电压。 然后，AC电流反馈控制器被使能，脉宽调制器用于在电压前馈控制信号和反馈控制信号的控制下驱动逆变器。
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