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公开(公告)号：US11355957B2
公开(公告)日：2022-06-07
申请号：US16267374
申请日：2019-02-04
Applicant: ABB Schweiz AG
Inventor： Lorenzo Giuntini , Andrea Mannuccini , Silvio Colombi
IPC: H02J3/38 , H02J9/00 , H02J9/06 , H02H7/26 , H02H3/05 , H01H85/46 , H02H3/08 , H02H7/20 , H02H1/00
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.
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12.发明授权公开(公告)号：US10826381B2
公开(公告)日：2020-11-03
申请号：US15955154
申请日：2018-04-17
Applicant: ABB Schweiz AG
Inventor： Lorenzo Giuntini , Andrea Mannuccini
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.
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公开(公告)号：US10574136B2
公开(公告)日：2020-02-25
申请号：US15955077
申请日：2018-04-17
Applicant: ABB Schweiz AG
Inventor： Lorenzo Giuntini
Abstract: Current source rectifiers (CSR) and methods for a power source including three phase lines are provided herein. The CSR includes a rectifier having a plurality of switches, each switch of the plurality of switches coupled to an associated phase line of the three phase lines. The rectifier operable to receive an alternating current (AC) input voltage and provide a direct current (DC) output voltage. The CSR also includes a controller configured to control operation of the switches in accordance with a first switching sequence when measured input voltages on at least two phase lines of the three phase lines are outside of a predetermined voltage range, and control operation of the switches in accordance with a second switching sequence when the measured input voltages on the at least two phase lines are within the predetermined voltage range.
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公开(公告)号：US20190260227A1
公开(公告)日：2019-08-22
申请号：US16405203
申请日：2019-05-07
Applicant: ABB Schweiz AG
Inventor： Silvio Colombi , Andrea Mannuccini , Harry Bye Handlin , Lorenzo Giuntini
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.
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公开(公告)号：US10284008B2
公开(公告)日：2019-05-07
申请号：US15263821
申请日：2016-09-13
Applicant: ABB Schweiz AG
Inventor： Andrea Mannuccini , Lorenzo Giuntini
Abstract: An uninterruptible power supply (UPS) system is provided. The UPS system includes a plurality of UPSs, a ring bus that electrically couples the UPSs together, a static switch coupled between an associated UPS of the UPSs and the ring bus, and a controller. The controller receives current data representative of an inverter current and a load current associated with the associated UPS. An output capacitor of the associated UPS is coupled to a node that conducts the inverter current and the load current. The controller further calculates a measured current based on the received current data, determines a voltage of said output capacitor, generates a derived current based on the determined voltage and a predetermined capacitance of said output capacitor, compares the measured current and the derived current to identify a fault location, and controls said static switch based on the identified fault location.
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Patent Agency Ranking
公开(公告)号：US12218595B2
公开(公告)日：2025-02-04
申请号：US17737158
申请日：2022-05-05
Applicant: ABB Schweiz AG
Inventor： Lorenzo Giuntini
Abstract: A voltage balancing circuit for a double-boost DC/DC converter includes a split DC-link having a first midpoint, outer directional devices and inner switches parallel-connected to the DC-link, wherein the outer directional devices are connected to capacitors of the split DC-link and to the inner switches. The inner switches are connected to each other at a second midpoint. A DC source terminal, to which a DC source is connectable in parallel over inductances to the inner switches, is included. An inductance is connected to the midpoint of the DC link and to the midpoint of the inner switches.
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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
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.
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公开(公告)号：US20220360176A1
公开(公告)日：2022-11-10
申请号：US17737158
申请日：2022-05-05
Applicant: ABB Schweiz AG
Inventor： Lorenzo Giuntini
Abstract: A voltage balancing circuit for a double-boost DC/DC converter includes a split DC-link having a first midpoint, outer directional devices and inner switches parallel-connected to the DC-link, wherein the outer directional devices are connected to capacitors of the split DC-link and to the inner switches. The inner switches are connected to each other at a second midpoint. A DC source terminal, to which a DC source is connectable in parallel over inductances to the inner switches, is included. An inductance is connected to the midpoint of the DC link and to the midpoint of the inner switches.
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公开(公告)号：US11289940B2
公开(公告)日：2022-03-29
申请号：US14301516
申请日：2014-06-11
Applicant: ABB Schweiz AG
Inventor： Lorenzo Giuntini , Ivan Furlan
Abstract: A multi-mode uninterruptible power supply (UPS) is provided. The multi-mode UPS includes a first path including a rectifier and an inverter, and a second path in parallel with the first path, wherein the multi-mode UPS is operable in an economy mode in which power flows from a utility to a load through the second path while at least one of the rectifier and the inverter is activated, the at least one of the rectifier and the inverter operable to perform at least one of DC voltage regulation, reactive power compensation, and active damping.
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公开(公告)号：US11205952B2
公开(公告)日：2021-12-21
申请号：US16800279
申请日：2020-02-25
Applicant: ABB Schweiz AG
Inventor： Lorenzo Giuntini
Abstract: Current source rectifier (CSR) systems and methods for a power source including three phase lines are disclosed. One illustrative CSR system includes a rectifier operable to receive an AC input voltage and provide a DC output voltage and a controller communicatively coupled to the rectifier. The rectifier comprises first, second, and third phase legs including a plurality of switches with each switch coupled to an associated phase line of the three phase lines. The controller is operable to (i) control operation of the plurality of switches in accordance with a first switching sequence when measured input voltages on at least two phase lines of the three phase lines are outside of the predetermined voltage range and (ii) control operation of the plurality of switches in accordance with a second switching sequence when the measured input voltages on the at least two phase lines are within the predetermined voltage range.
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