公开(公告)号：US10958184B2

公开(公告)日：2021-03-23

申请号：US14327171

申请日：2014-07-09

Applicant: ABB Schweiz AG

Inventor： Lorenzo Giuntini ,  Silvio Colombi ,  Andrea Mannuccini

IPC: H02M5/458 ,  H02J9/06 ,  H02M7/487

Abstract: An uninterruptible power supply (UPS) is provided that includes a split direct current (DC) link having a first capacitor coupled between a positive DC link terminal and a first node, and a second capacitor coupled between the first node and a negative DC link terminal. The UPS also includes a rectifier coupled to an input of the split DC link and a controller coupled to the rectifier. The rectifier includes first, second, and third legs, wherein each leg is configured to convert a first alternating current (AC) voltage received from an AC source into a DC voltage to be provided to the split DC link, and a fourth leg configured to balance DC link voltages of the first and second capacitors. The controller is configured to maintain functionality of the rectifier during at least one of a partial utility power outage, a full utility outage, and a failure of at least one of the first, second, third, and fourth legs.

公开(公告)号：US20190319530A1

公开(公告)日：2019-10-17

申请号：US15955154

申请日：2018-04-17

Applicant: ABB Schweiz AG

Inventor： Lorenzo Giuntini ,  Andrea Mannuccini

IPC: H02M1/32 ,  H02J9/06 ,  H02M5/458

Abstract: A control system and methods for a multilevel power converter are provided. The converter includes a rectifier coupled to a DC link having a midpoint coupled to electrical ground that divides the DC link into two halves. The control system is configured to generate a reference current command for controlling an output of the rectifier, the reference current command generated based on a difference between a desired and measured DC link voltage value. The system is also configured to determine a zero-sequence current component of input current supplied to the multilevel power converter, wherein the zero-sequence current component is associated with non-linearities in said multilevel power converter that cause ground current injection into the input current by the rectifier. The system is further configured to subtract the determined zero-sequence current component from the reference current command to reduce the ground current injected into the input current by the rectifier.

公开(公告)号：US10284007B2

公开(公告)日：2019-05-07

申请号：US14823233

申请日：2015-08-11

Applicant: ABB Schweiz AG

Inventor： Silvio Colombi ,  Andrea Mannuccini ,  Harry Bye Handlin ,  Lorenzo Giuntini

IPC: H02J9/06 ,  H02M1/34 ,  H02J3/38

Abstract: A system is provided. The system includes a plurality of uninterruptible power supplies (UPSs), a ring bus, a plurality of chokes, each choke of the plurality of chokes electrically coupling an associated UPS of the plurality of UPSs to the ring bus, and at least one switch electrically coupled between at least one UPS of the plurality of UPSs and the ring bus, the at least one switch having an opening time of less than 10 milliseconds.

公开(公告)号：US11949280B2

公开(公告)日：2024-04-02

申请号：US17480450

申请日：2021-09-21

Applicant: ABB Schweiz AG

Inventor： Silvio Colombi ,  Andrea Mannuccini

IPC: H02J9/06 ,  H02H7/122 ,  H02J3/36 ,  H02J3/46 ,  H02M7/08 ,  H02M7/493

CPC classification number: H02J9/061 ,  H02H7/1227 ,  H02J3/36 ,  H02J3/46 ,  H02M7/08 ,  H02M7/493 ,  H02J2310/10

Abstract: The disclosure relates to a method for controlling an uninterruptable power supply and a respective computer program. The uninterruptable power supply comprises a grid connection, a grid switch connected to the grid connection, a rectifier and an inverter interconnected via a DC link, an energy storage connected to the DC link, a load connection, to which the inverter is connected, and a bypass switch, which is connected in parallel to the rectifier, the DC link and the inverter between the grid switch and the load connection, wherein the grid switch is a mechanical switch and the bypass switch is a semiconductor switch.

公开(公告)号：US11804731B2

公开(公告)日：2023-10-31

申请号：US17573354

申请日：2022-01-11

Applicant: ABB Schweiz AG

Inventor： Silvio Colombi ,  Andrea Mannuccini

IPC: H02J9/06 ,  H02J3/08 ,  H02J3/00

CPC classification number: H02J9/062 ,  H02J3/007 ,  H02J3/08 ,  H02J9/061

Abstract: A method for controlling an uninterruptable power supply arranged between a grid and a variable load, the uninterruptable power supply includes a DC link interconnecting a rectifier connected to the grid via a grid switch, an energy storage and an inverter connected to the load, and a switchable bypass connected between the grid switch and the load and in parallel with the path formed by the rectifier, the DC link and the inverter, the method includes monitoring a power supply of the grid, comparing the power supply to a load requirement of the load, if the power supply meets the load requirement, closing the grid switch, and switching on the bypass, to supply the load with AC current from the grid.

公开(公告)号：US20210336551A1

公开(公告)日：2021-10-28

申请号：US17209429

申请日：2021-03-23

Applicant: ABB Schweiz AG

Inventor： Lorenzo Giuntini ,  Silvio Colombi ,  Andrea Mannuccini

IPC: H02M5/458 ,  H02J9/06

Abstract: An uninterruptible power supply (UPS) is provided that includes a split direct current (DC) link having a first capacitor coupled between a positive DC link terminal and a first node, and a second capacitor coupled between the first node and a negative DC link terminal. The UPS also includes a rectifier coupled to an input of the split DC link and a controller coupled to the rectifier. The rectifier includes first, second, and third legs, wherein each leg is configured to convert a first alternating current (AC) voltage received from an AC source into a DC voltage to be provided to the split DC link, and a fourth leg configured to balance DC link voltages of the first and second capacitors. The controller is configured to maintain functionality of the rectifier during at least one of a partial utility power outage, a full utility outage, and a failure of at least one of the first, second, third, and fourth legs.

公开(公告)号：US11081903B2

公开(公告)日：2021-08-03

申请号：US16405203

申请日：2019-05-07

Applicant: ABB Schweiz AG

Inventor： Silvio Colombi ,  Andrea Mannuccini ,  Harry Bye Handlin ,  Lorenzo Giuntini

IPC: H02J9/06 ,  H02M1/34 ,  H02J3/38

Abstract: In at least one embodiment, a system may include a plurality of uninterruptible power supplies (UPSs), a ring bus, a plurality of chokes, with each choke of the plurality of chokes electrically coupling an associated UPS of the plurality of UPSs to the ring bus, and at least one switch electrically coupled between at least one UPS of the plurality of UPSs and the ring bus, with the at least one switch having an opening time of less than 10 milliseconds.

公开(公告)号：US11539303B2

公开(公告)日：2022-12-27

申请号：US17209429

申请日：2021-03-23

Applicant: ABB Schweiz AG

Inventor： Lorenzo Giuntini ,  Silvio Colombi ,  Andrea Mannuccini

IPC: H02M5/458 ,  H02J9/06 ,  H02M7/487

Abstract: An uninterruptible power supply (UPS) is provided that includes a split direct current (DC) link having a first capacitor coupled between a positive DC link terminal and a first node, and a second capacitor coupled between the first node and a negative DC link terminal. The UPS also includes a rectifier coupled to an input of the split DC link and a controller coupled to the rectifier. The rectifier includes first, second, and third legs, wherein each leg is configured to convert a first alternating current (AC) voltage received from an AC source into a DC voltage to be provided to the split DC link, and a fourth leg configured to balance DC link voltages of the first and second capacitors. The controller is configured to maintain functionality of the rectifier during at least one of a partial utility power outage, a full utility outage, and a failure of at least one of the first, second, third, and fourth legs.

公开(公告)号：US20190173313A1

公开(公告)日：2019-06-06

申请号：US16267374

申请日：2019-02-04

Applicant: ABB Schweiz AG

Inventor： Lorenzo Giuntini ,  Andrea Mannuccini ,  Silvio Colombi

IPC: H02J9/06 ,  H02H7/26 ,  H01H85/46 ,  H02H3/08 ,  H02H1/00 ,  H02H7/20 ,  H02H3/05

Abstract: An uninterruptible power supply (UPS) system is provided. The UPS system includes a plurality of UPSs, a ring bus coupled to the UPSs, a plurality of chokes, and at least one static switch coupled between an associated UPS of the UPSs and the ring bus. Each choke electrically couples an associated UPS to the ring bus. The static switch is switchable to selectively bypass at least one choke.

公开(公告)号：US10199861B2

公开(公告)日：2019-02-05

申请号：US15263841

申请日：2016-09-13

Applicant: ABB Schweiz AG

Inventor： Lorenzo Giuntini ,  Andrea Mannuccini ,  Silvio Colombi

IPC: H02J3/38 ,  H02J9/00 ,  H02J9/06 ,  H01H85/46 ,  H02H3/08 ,  H02H7/20 ,  H02H1/00 ,  H02H7/26

Abstract: An uninterruptible power supply (UPS) system is provided. The UPS system includes a plurality of UPSs, a ring bus coupled to the UPSs, a plurality of chokes, and at least one static switch coupled between an associated UPS of the UPSs and the ring bus. Each choke electrically couples an associated UPS to the ring bus. The static switch is switchable to selectively bypass at least one choke.