-
公开(公告)号：US10931114B2
公开(公告)日：2021-02-23
申请号：US16635025
申请日：2017-08-03
Applicant: ABB Power Grids Switzerland AG
Inventor： Ying Jiang-Häfner , Adil Abdalrahman , Per Holmberg
Abstract: A first voltage source converter and converter station including such a first voltage source converter, as well as a method and computer program product for controlling the first voltage source converter are disclosed. The first voltage source converter has a DC side for connection to a DC system, has an AC side for connection to an AC system and is interconnected with an AC side of a second voltage source converter, which has a DC side connected to the DC system. The first voltage source converter includes a number of converter valve pairs, each being connected to a corresponding AC phase of the AC system and a control unit controlling the converter valves to generate at least one AC waveform and to reduce oscillations between the converters.
-
公开(公告)号：US20200350767A1
公开(公告)日：2020-11-05
申请号：US16964741
申请日：2018-02-23
Applicant: ABB Power Grids Switzerland AG
Inventor： Praveen Kumar Barupati , Ying Jiang-Häfner
Abstract: Methods of energizing converters, and converter stations thereof, based on a mix of half-bridge (HB) converter cells and full-bridge (FB) converter cells are provided. According to one embodiment, a method for energizing a converter may include establishing a direct electrical connection between DC terminals of a converter, electrically connecting the converter to an AC power source via AC connectors and obtaining, from the AC power source and for a certain period of time, an AC voltage between two electrical phase lines for charging capacitors of the FB cells connected to the two electrical phase lines. Accordingly, the FB cells will be charged to a higher value and they may be controlled for charging capacitors of the HB submodules to at least a minimum voltage required to start switching devices of the HB submodules by drawing power from the AC power source.
-
Search Results
2
records
(took 0.014 seconds)
