公开(公告)号：US20200169163A1

公开(公告)日：2020-05-28

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

Abstract: A power electronic device (1) is described comprising an input which is connected to an over-current-protection device arrangement (3) and a DC-link (7, 8), wherein the DC-link (7, 8) comprises a series connection of at least two DC-link capacitors (Cdc). In such a power electronic device the risk of a fire hazard should be minimized. To this end fault detecting means (14) are provided detecting an imbalance between the DC-link capacitors (Cdc) or an overload of at least one of the DC-link capacitors (Cdc), wherein the fault detecting means (14) control maximum current inducing means connected to the DC-link.

公开(公告)号：US20210296882A1

公开(公告)日：2021-09-23

申请号：US17206366

申请日：2021-03-19

Applicant: Danfoss Power Electronics A/S

Inventor： Per Knudsen ,  Ansgar Nielsen ,  Henrik Rosendal Andersen

IPC: H02H7/08 ,  H02P27/08 ,  H02P23/14

Abstract: The present invention relates to a motor controller providing a dual-channel functional-safety (FS) safe-torque-off (STO) function when controlling a motor. The motor controller includes an inverter with low-side switches and high-side switches, a low-side gate drive connected to the low-side switches, a high-side gate drive connected to the high-side switches, a first functional-safety safe-torque-off circuit connected to the high-side gate drive and a second functional-safety safe-torque-off circuit connected to the low-side gate drive, and a non-rein-forced high-voltage isolation barrier.

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：US11749982B2

公开(公告)日：2023-09-05

申请号：US17206366

申请日：2021-03-19

Applicant: Danfoss Power Electronics A/S

Inventor： Per Knudsen ,  Ansgar Nielsen ,  Henrik Rosendal Andersen

IPC: H02P23/14 ,  H02P27/08 ,  H02H7/08

CPC classification number: H02H7/0844 ,  H02P23/14 ,  H02P27/085

Abstract: The present invention relates to a motor controller providing a dual-channel func-tional-safety (FS) safe-torque-off (STO) function when controlling a motor. The motor controller includes an inverter with low-side switches and high-side switches, a low-side gate drive connected to the low-side switches, a high-side gate drive connected to the high-side switches, a first functional-safety safe-torque-off circuit connected to the high-side gate drive and a second functional-safety safe-torque-off circuit connected to the low-side gate drive, and a non-reinforced high-voltage isolation barrier.