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公开(公告)号：US20240204650A1
公开(公告)日：2024-06-20
申请号：US18556313
申请日：2022-04-19
Applicant: ABB Schweiz AG
Inventor： Ioannis Tsoumas , Georgios Darivianakis , Daniel Ulmer
CPC classification number: H02M1/12 , H02J3/01 , H02J3/36 , H02J3/38 , H02J2300/28
Abstract: The present disclosure provides a method for controlling an energy conversion system. The system includes a rotating electrical machine, a machine-side converter, a DC-link, and a grid-side converter. The method includes modulating the machine-side converter for converting an AC voltage of the rotating electrical machine into a DC voltage supplied to the DC-link, and modulating the grid-side converter to convert a DC-link voltage at the DC-link into an AC output voltage to be supplied to an electrical grid, wherein the machine-side converter is modulated with first optimized pulse patterns, which have been optimized such that a peak value of the DC-link voltage or of a DC-link voltage component of the DC-link voltage is constrained to a predetermined value.
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公开(公告)号：US10074978B2
公开(公告)日：2018-09-11
申请号：US15413125
申请日：2017-01-23
Applicant: ABB Schweiz AG
Inventor： Tobias Geyer , Wim Van-Der-Merwe , Vedrana Spudic , Georgios Darivianakis
CPC classification number: H02J3/01 , G05B13/048 , H02J3/1821 , H02J2003/007 , H02M1/08 , H02M1/12 , H02M7/53873 , H02M7/539 , H02M7/5395 , H02M2007/4835 , Y02E40/22 , Y02E40/26 , Y02E40/30 , Y02E40/40
Abstract: A method for controlling a modular converter connected to an electrical grid for active power filtering the electrical grid to compensate for a load connected to the electrical grid, comprises: receiving an actual load current and an actual converter state of the modular converter; determining, from the actual load current and a history of previous load currents, a sequence of future load currents over a prediction horizon; predicting a sequence of future converter states of the modular converter and a sequence of manipulated variables for the modular converter over the prediction horizon by solving an optimization problem based on the actual converter state and the future load currents by minimizing an objective function mapping control objectives to a scalar performance index subject to the dynamical evolution of a prediction model of the modular converter and subject to constraints; and applying a next switching state, which is determined from a first element of the sequence of manipulated variables, to the modular converter.
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公开(公告)号：US20250047213A1
公开(公告)日：2025-02-06
申请号：US18717812
申请日：2022-12-09
Applicant: ABB Schweiz AG
Inventor： Georgios Darivianakis , Eduardo Rohr , Frederick Kieferndorf , Tobias Geyer
Abstract: A method for controlling an electrical converter comprises determining an actual modulation index (m) and an actual pulse number (d); determining a neutral point voltage (vnp) of the neutral point (NP); determining an actual neutral point balancing value from the neutral point voltage (vnp); determining an optimized pulse pattern to be applied to the electrical converter from a table of optimized pulse patterns stored in a controller of the electrical converter; and applying the determined optimized pulse pattern to the electrical converter. The table of optimized pulse patterns is indexed with respect to a set of modulation indices (m) and a set of pulse numbers (d) and the optimized pulse pattern is determined based on the actual modulation index (m) and the actual pulse number (d). For a modulation index (m) and a pulse number (d), an optimized pulse pattern stored in the table comprises switching angles and at least one of a switching state and switching transition of the at least one phase leg for each switching angle. For at least some modulation indices (m) and some pulse numbers (d), an optimized pulse pattern stored in the table with respect to a modulation index (m) and a pulse number (d) comprises switching angles, which correspond to different neutral point balancing values. The switching angles of the optimized pulse pattern to be applied to the electrical converter are determined from the switching angles, which correspond to different neutral point balancing values, as a function of the actual neutral point balancing value.
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公开(公告)号：US20170133845A1
公开(公告)日：2017-05-11
申请号：US15413125
申请日：2017-01-23
Applicant: ABB Schweiz AG
Inventor： Tobias Geyer , Wim Van-Der-Merwe , Vedrana Spudic , Georgios Darivianakis
CPC classification number: H02J3/01 , G05B13/048 , H02J3/1821 , H02J2003/007 , H02M1/08 , H02M1/12 , H02M7/53873 , H02M7/539 , H02M7/5395 , H02M2007/4835 , Y02E40/22 , Y02E40/26 , Y02E40/30 , Y02E40/40
Abstract: A method for controlling a modular converter connected to an electrical grid for active power filtering the electrical grid to compensate for a load connected to the electrical grid, comprises: receiving an actual load current and an actual converter state of the modular converter; determining, from the actual I load current and a history of previous load currents, a sequence of future load currents over a prediction horizon; predicting a sequence of future converter states of the modular converter and a sequence of manipulated variables for the modular converter over the prediction horizon by solving an optimization problem based on the actual converter state and the future load currents by minimizing an objective function mapping control objectives to a scalar performance index subject to the dynamical evolution of a prediction model of the modular converter and subject to constraints; and applying a next switching state, which is determined from a first element of the sequence of manipulated variables, to the modular converter.
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