公开(公告)号：US10731655B2

公开(公告)日：2020-08-04

申请号：US14877817

申请日：2015-10-07

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

Inventor： Robert W. Stiles, Jr. ,  Lars Hoffmann Berthelsen ,  Gert Kjaer ,  Florin Lungeanu

IPC: F04B49/06 ,  F04D15/00 ,  F04D13/06 ,  F04B49/20 ,  F04D1/00

Abstract: Embodiments of the invention provide a pumping system for at least one aquatic application. The pumping system includes a pump, a motor coupled to the pump, and a controller in communication with the motor. The controller receives input of a performance value that is determined utilizing information from operation of the motor and compares the performance value to a reference value. The controller also is configured to prime and run the pump when the performance value equals the first reference value and to continue to do so until the performance value equals a second reference value. Alternatively, the controller receives user input of an amount of time the system can take to attempt to successfully prime the pump and is configured to operate the motor at maximum speed until the amount of time elapses.

公开(公告)号：US10527042B2

公开(公告)日：2020-01-07

申请号：US14680947

申请日：2015-04-07

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

Inventor： Robert W. Stiles, Jr. ,  Lars Hoffmann Berthelsen ,  Ronald B. Robol ,  Christopher Yahnker ,  Daniel J. Hruby ,  Kevin Murphy ,  Einar Kjartan Runarsson ,  Arne Fink Hansen ,  Florin Lungeanu ,  Peter Westermann-Rasmussen

IPC: F04B49/20 ,  F04D15/00 ,  F04D27/00 ,  F04D13/06 ,  E04H4/12 ,  F04B49/06

Abstract: A pumping system for moving water of a swimming pool includes a water pump, an infinitely variable speed motor, and an arrangement for operating the motor. In one example, the pumping system includes a memory configured to store a plurality of retained speed values, an arrangement for providing a plurality of retained speed values to the memory, and an arrangement for reading a selected one of the plurality of retained speed values from the memory. In addition or alternatively, the pumping system includes a storage medium for digitally storing a plurality of pre-established motor speed values and an arrangement for receiving input from a user to select one of the pre-established motor speeds. In addition or alternatively, the pumping system further includes an arrangement for restarting operation of the motor at a previously selected speed value when power supplied to the motor is interrupted during operation of the motor. A method for controlling the pumping system is also provided.

公开(公告)号：US10386808B2

公开(公告)日：2019-08-20

申请号：US15441482

申请日：2017-02-24

Applicant: LINESTREAM TECHNOLOGIES

Inventor： Gang Tian ,  Adam Reynolds

IPC: G05B19/04 ,  G05B19/042 ,  G06F17/18

Abstract: A system parameter identification system uses a combination of relay control and sinusoidal injection to derive accurate estimates of system parameters of a controlled system or process while satisfying the rate-limit associated with some control applications. The system uses rate-limited relay control with hysteresis to place the system in oscillation. The system then switches the control signal from relay-based control to open-loop sinusoidal control using oscillation frequency, amplitude, and phase information obtained during the relay control stage. During the sinusoidal control phase, the plant output passes through a bandpass filter at the oscillation frequency to get a clean sinusoidal signal. The phase difference between the input and output signals and the output/input amplitude ratio are then obtained and used to calculate of the system parameters.

公开(公告)号：US09781860B2

公开(公告)日：2017-10-03

申请号：US14368003

申请日：2012-12-08

Applicant: Danfoss Solar Inverters A/S

Inventor： Thomas Hjort

IPC: F24F11/06 ,  H05K7/20 ,  F28F27/00

CPC classification number: H05K7/20 ,  F28F27/00 ,  H05K7/20209 ,  H05K7/20909 ,  H05K7/20945

Abstract: A method (19) of cooling a heat generating device (2) where the cooling rate (17, 18) of the heat generating device (2) is determined using the rate of change of the temperature (16) of the heat generating device (2).

公开(公告)号：USD1028888S1

公开(公告)日：2024-05-28

申请号：US29803179

申请日：2021-08-11

Applicant: Danfoss Power Electronics A/S

Designer： Michael Sørensen

Abstract: FIG. 1 is a front, right side and top perspective view of a frequency converter 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.

公开(公告)号：USD1028887S1

公开(公告)日：2024-05-28

申请号：US29769107

申请日：2021-02-03

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 frequency converter comprising a new, original and ornamental design having an element shown in color red;
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;
FIG. 7 is a right view thereof;
FIG. 8 is a front, right side and top perspective view of the frequency converter of FIG. 1 in accordance with an 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 top view thereof;
FIG. 12 is a bottom 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 the frequency converter of FIG. 1 in accordance with an 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 top view thereof;
FIG. 19 is a bottom 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 the frequency converter of FIG. 1 in accordance with an 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 top view thereof;
FIG. 26 is a bottom view thereof;
FIG. 27 is a left view thereof; and,
FIG. 28 is a right view thereof.

公开(公告)号：USD1021793S1

公开(公告)日：2024-04-09

申请号：US29738732

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 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 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 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 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：USD1021792S1

公开(公告)日：2024-04-09

申请号：US29738731

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：US20240045000A1

公开(公告)日：2024-02-08

申请号：US18366272

申请日：2023-08-07

Applicant: Danfoss Power Electronics A/S

Inventor： Sanjeet Kumar Dwivedi ,  Thiruvenkadam Madhulingam ,  Anandarao Bongu

IPC: G01R31/52 ,  G01R31/72

CPC classification number: G01R31/52 ,  G01R31/72 ,  H02P29/024

Abstract: A method for detecting a short circuit in a winding of an electric motor being driven by a drive, the method includes measuring respective phase currents of the windings, transforming the phase currents to negative sequence components, and comparing the negative sequence components with respective baseline values. A corresponding control unit is further disclosed.

公开(公告)号：US11637517B2

公开(公告)日：2023-04-25

申请号：US17367814

申请日：2021-07-06

Applicant: Danfoss Power Electronics A/S

Inventor： Jens Godbersen ,  Lucian Asiminoaei

IPC: H02P21/16 ,  G01R31/34

Abstract: The present invention relates to a method for estimating individual phase resistance of a motor by means of an adjustable speed drive (ASD) while the motor controlled by the ASD is running and/or is at standstill. The motor is an asynchronous motor or a synchronous motor. The invention also relates to an adjustable speed drive for executing a corresponding method.