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

IPC: H02P23/14 ,  H02P6/182 ,  H02P1/02 ,  H02P27/06

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.

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

IPC: H02P21/18 ,  H02P6/20 ,  H02P21/22 ,  H02P27/12

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.

公开(公告)号：US20190006974A1

公开(公告)日：2019-01-03

申请号：US16064502

申请日：2017-01-04

Applicant: DANFOSS POWER ELECTRONICS A/S

Inventor： Leandro DELLA FLORA ,  Anton SMITH

IPC: H02P21/18 ,  H02P21/22 ,  H02P27/12

CPC classification number: H02P21/18 ,  H02P6/20 ,  H02P21/22 ,  H02P27/12

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 analysed 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 magnetised 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.

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

IPC: H02M7/217 ,  H02M1/08

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.

公开(公告)号：US20160126879A1

公开(公告)日：2016-05-05

申请号：US14898797

申请日：2014-05-23

Applicant: DANFOSS POWER ELECTRONICS A/S

Inventor： Omid Shajarati

IPC: H02P27/06 ,  H02P29/02

CPC classification number: H02P27/06 ,  H02J9/062 ,  H02P29/025

Abstract: A method of controlling a motor drive having a normal mode wherein a DC link voltage is charged using an AC (e.g. mains) power supply and an emergency mode wherein the DC link voltage is charged using a DC supply (e.g. from a battery) is described. In the normal mode of operation, if the DC link voltage falls below a threshold indicative of the AC power supply being lost, the emergency mode is entered, typically following an intervening coast mode (during which the motor is not driven). Similarly, in the emergency mode, if the DC link voltage rises above a threshold indicative of the AC power supply being restored, the normal mode is entered, typically following an intervening coast mode.

Abstract translation: 一种控制具有正常模式的电机驱动器的方法，其中使用AC（例如电源）电源对DC链路电压进行充电以及使用DC电源（例如，从电池）对DC链路电压进行充电的紧急模式进行描述 。 在正常操作模式下，如果直流母线电压下降到低于表示交流电源损耗的阈值，则进入紧急模式，通常沿着中间滑行模式（电动机未被驱动）。 类似地，在紧急模式中，如果直流链路电压上升到高于表示交流电源恢复的阈值，则通常沿着中间沿岸模式进入正常模式。

公开(公告)号：US20150300358A1

公开(公告)日：2015-10-22

申请号：US14755548

申请日：2015-06-30

Applicant: Pentair Wate Pool and Spa, Inc. ,  Danfoss Power Electronics A/S

Inventor： Robert W. Stiles, Jr. ,  Lars Hoffmann Berthelsen ,  Peter Westermann-Rasmussen ,  Gert Kjaer ,  Florin Lungeanu

IPC: F04D15/00 ,  F04D13/06 ,  F04D1/00

Abstract: A pumping system for moving water of a swimming pool includes a water pump and a variable speed motor. The pumping system further includes means for determining a first motor speed of the motor, means for determining first and second performance values of the pumping system, and means for comparing the first and second performance values. The pumping system further includes means for determining an adjustment value based upon the comparison, means for determining a second motor speed based upon the adjustment value, and means for controlling the motor in response to the second motor speed. In one example, the pumping system includes means for determining a value indicative of a flow rate of water moved by the pump. In addition or alternatively, the pumping system includes a filter arrangement. A method of controlling the pumping system for moving the water of the swimming pool is also disclosed.

Abstract translation: 用于移动游泳池水的泵送系统包括水泵和变速电动机。 泵送系统还包括用于确定电动机的第一电动机速度的装置，用于确定泵送系统的第一和第二性能值的装置，以及用于比较第一和第二性能值的装置。 泵送系统还包括用于基于比较确定调节值的装置，用于基于调节值确定第二电动机速度的装置，以及响应于第二电动机速度控制电动机的装置。 在一个示例中，泵送系统包括用于确定指示由泵移动的水的流量的值的装置。 另外或替代地，泵送系统包括过滤装置。 还公开了一种控制用于移动游泳池的水的泵送系统的方法。

公开(公告)号：US20250117348A1

公开(公告)日：2025-04-10

申请号：US18904463

申请日：2024-10-02

Applicant: Danfoss Power Electronics A/S

Inventor： Carlo Nenna

IPC: G06F13/36

Abstract: A method for automatically assigning identifiers to controlled nodes of a fieldbus network, the controlled nodes comprising a plurality of electric motor drive systems, IO devices and/or feedback sensors, wherein the method includes the steps of setting the fieldbus network into a service mode; scanning the fieldbus network; decomposing the fieldbus network into linear branches and switches; scanning each linear branch; and assigning unique identifiers to the controlled nodes of the fieldbus network, wherein the identifiers include the relative positions of the controlled nodes in the fieldbus network and a node number. The disclosure is further directed at a fieldbus network including a plurality of controlled nodes, preferably electric motor drive systems, wherein the fieldbus network is provided for performing the method for automatically assigning identifiers.

公开(公告)号：US12015334B2

公开(公告)日：2024-06-18

申请号：US16695567

申请日：2019-11-26

Applicant: Danfoss Power Electronics A/S

Inventor： Ansgar Nielsen ,  Henrik Rosendal Andersen ,  Steen Hornsleth

IPC: H02M1/32 ,  H02M5/458

CPC classification number: H02M1/32 ,  H02M5/4585 ,  H02M1/327

Abstract: A power electronic device includes an input which is connected to an over-current-protection device arrangement and a DC-link, wherein the DC-link includes a series connection of at least two DC-link capacitors. In such a power electronic device the risk of a fire hazard should be minimized. To this end fault detecting element(s) are provided detecting an imbalance between the DC-link capacitors or an overload of at least one of the DC-link capacitors, wherein the fault detecting element(s) control maximum current inducing element(s) connected to the DC-link.

公开(公告)号：USD1021794S1

公开(公告)日：2024-04-09

申请号：US29738733

申请日：2020-06-19

Applicant: Danfoss Power Electronics A/S

Designer： Michael Sørensen

Abstract: The patent or application file contains at least one drawing executed in color. Copies of this patent or patent application publication with color drawing(s) will be provided by the Office upon request and payment of the necessary fee.
FIG. 1 is a front, right side and top perspective view of a combined frequency converter and frequency converter panel in accordance with a first embodiment with no color claimed;
FIG. 2 is a front view thereof;
FIG. 3 is a back view thereof;
FIG. 4 is a bottom view thereof;
FIG. 5 is a top view thereof;
FIG. 6 is a left view thereof;
FIG. 7 is a right view thereof;
FIG. 8 is a front, right side and top perspective view of a combined frequency converter and frequency converter panel in accordance with a second embodiment having an element shown in color red;
FIG. 9 is a front view thereof;
FIG. 10 is a back view thereof;
FIG. 11 is a bottom view thereof;
FIG. 12 is a top view thereof;
FIG. 13 is a left view thereof;
FIG. 14 is a right view thereof;
FIG. 15 is a front, right side and top perspective view of a combined frequency converter and frequency converter panel in accordance with a third embodiment having an element shown in color red;
FIG. 16 is a front view thereof;
FIG. 17 is a back view thereof;
FIG. 18 is a bottom view thereof;
FIG. 19 is a top view thereof;
FIG. 20 is a left view thereof;
FIG. 21 is a right view thereof;
FIG. 22 is a front, right side and top perspective view of a combined frequency converter and frequency converter panel in accordance with a fourth embodiment having an element shown in color red;
FIG. 23 is a front view thereof;
FIG. 24 is a back view thereof;
FIG. 25 is a bottom view thereof;
FIG. 26 is a top view thereof;
FIG. 27 is a left view thereof; and,
FIG. 28 is a right view thereof.

公开(公告)号：USD1010589S1

公开(公告)日：2024-01-09

申请号：US29738728

申请日：2020-06-19

Applicant: Danfoss Power Electronics A/S

Designer： Michael Sørensen

Abstract: FIG. 1 is a front, right side and top perspective view of the control panel module comprising a new, original and ornamental design;
FIG. 2 is a front view thereof;
FIG. 3 is a back view thereof;
FIG. 4 is a top view thereof;
FIG. 5 is a bottom view thereof;
FIG. 6 is a left view thereof; and,
FIG. 7 is a right view thereof.
The broken lines show portions of the control panel module that form no part of the claimed design.