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2. 发明公开

EP3829048A1 CURRENT SOURCE CONVERTER AND METHOD FOR CONTROL THEREOF 无效
公开(公告)号：EP3829048A1
公开(公告)日：2021-06-02
申请号：EP19212152.3
申请日：2019-11-28
申请人： ABB Schweiz AG
发明人： BERTOLDI, Frederico , RODRIGUEZ, Pedro , LIN, Chenjie , BOSGA, Sjoerd , MOHANAVEERAMANI, Aravind , OKAZAKI, Yuhei
IPC分类号： H02P6/32 , H02P9/30
摘要： A current source converter, CSC, for a multiphase brushless excitation system is presented. The CSC comprises a thyristor block and a commutation block. The thyristor block comprises a pair of thyristors (T1-T6) per phase of the multiphase brushless excitation system configured in a full-wave bridge. The commutation block comprises a half-bridge current source converter with two commutation switches (Si, S2) configured for two quadrant operation of the multiphase brushless excitation system. Each midpoint of the pair of thyristors is configured to be connected to an excitation phase of the multiphase brushless excitation system and DC terminals of each pair of thyristors are connected to DC terminals of the commutation block.

3. 发明公开

EP3734827A1 BACK-TO-BACK CONVERTER ARRANGEMENT 审中-实审转让
公开(公告)号：EP3734827A1
公开(公告)日：2020-11-04
申请号：EP20172277.4
申请日：2020-04-30
申请人： ABB Schweiz AG
发明人： OKAZAKI, Yuhei , DIJKHUIZEN, Frans
IPC分类号： H02M7/219 , H02M7/483
摘要： An MMC of a back-to-back converter arrangement comprises a first and a second phase leg connected between a first DC terminal having a first DC voltage and a second DC terminal having a second DC voltage, the phase legs comprising upper and lower arms with submodules, where each submodule comprises an energy storage element and the junction between two arms provides a corresponding AC terminal. Each phase leg is controlled (42) according to a scheme for generating a waveform on the corresponding AC terminal, which control comprises controlling (42a) the upper phase arm to bypass their energy storage elements and the lower phase arm to be blocked in a first interval (TI1), controlling (42b) the upper and lower phase arms to transition from the first to the second DC voltage in a second interval (TI2), controlling (42c) the upper phase arm to be blocked and the lower phase arm to bypass their energy storage elements in a third interval (TI3), and controlling (42d) the upper and lower phase arms to transition from the second to the first DC voltage in a fourth interval (TI4).

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