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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
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：US20190319546A1
公开(公告)日：2019-10-17
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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3.发明申请公开(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
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：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
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.
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公开(公告)号：US12249864B2
公开(公告)日：2025-03-11
申请号：US18304917
申请日：2023-04-21
Applicant: ABB Schweiz AG
Inventor： Lorenzo Giuntini
Abstract: An uninterruptible power supply (UPS) converter circuit includes a controlled switching element, a filter capacitor, and a split DC capacitor comprising a plus DC capacitor and a minus DC capacitor split at a DC-link mid-point, connected to each other at the DC-link mid-point on a respective first side. A second side of the input filter capacitor at an AC point is coupled via an inductor element to a second side of the controlled switching element, the second side of the controlled switching element being coupled to the second side of the plus DC capacitor and the minus capacitor. The controlled switching element operates is configured to be controlled such that a current from the AC point via the inductor element flows alternatingly to either the plus DC output capacitor or the minus DC capacitor, and to the DC-link mid-point, respectively, thereby discharging the input filter capacitor.
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Patent Agency Ranking
公开(公告)号：US11916431B2
公开(公告)日：2024-02-27
申请号：US17582129
申请日：2022-01-24
Applicant: ABB Schweiz AG
Inventor： Lorenzo Giuntini
CPC classification number: H02J9/061 , H02J7/0014
Abstract: A converter includes a DC split link with a positive line, a floating midpoint, and a negative DC line, a first DC capacitance arranged between the positive line and the floating midpoint, a second DC capacitance arranged between the negative line and the floating midpoint, a first resistor arranged in parallel to the first DC capacitance, a second resistor is arranged in parallel to the second DC capacitance. The first and the second resistors are configured to be engaged during a pre-charge phase of the converter.
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公开(公告)号：US20230268764A1
公开(公告)日：2023-08-24
申请号：US18304917
申请日：2023-04-21
Applicant: ABB Schweiz AG
Inventor： Lorenzo Giuntini
CPC classification number: H02J9/06 , H02M3/1584 , H02M1/143 , H02J2207/20
Abstract: An uninterruptible power supply (UPS) converter circuit includes a controlled switching element, a filter capacitor, and a split DC capacitor comprising a plus DC capacitor and a minus DC capacitor split at a DC-link mid-point, connected to each other at the DC-link mid-point on a respective first side. A second side of the input filter capacitor at an AC point is coupled via an inductor element to a second side of the controlled switching element, the second side of the controlled switching element being coupled to the second side of the plus DC capacitor and the minus capacitor. The controlled switching element operates is configured to be controlled such that a current from the AC point via the inductor element flows alternatingly to either the plus DC output capacitor or the minus DC capacitor, and to the DC-link mid-point, respectively, thereby discharging the input filter capacitor.
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公开(公告)号：US20220239142A1
公开(公告)日：2022-07-28
申请号：US17582129
申请日：2022-01-24
Applicant: ABB Schweiz AG
Inventor： Lorenzo Giuntini
Abstract: A converter includes a DC split link with a positive line, a floating midpoint, and a negative DC line, a first DC capacitance arranged between the positive line and the floating midpoint, a second DC capacitance arranged between the negative line and the floating midpoint, a first resistor arranged in parallel to the first DC capacitance, a second resistor is arranged in parallel to the second DC capacitance. The first and the second resistors are configured to be engaged during a pre-charge phase of the converter.
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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
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：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
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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