- 专利标题: Control system and control method for parallel converter system
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申请号: US16644225申请日: 2018-05-22
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公开(公告)号: US11355932B2公开(公告)日: 2022-06-07
- 发明人: Nannan Wang , Yu Lu , Yunlong Dong , Jie Tian , Chongxue Jiang , Jiacheng Wang , Gang Li , Jiudong Ding , Haiying Li
- 申请人: NR Electric Co., Ltd , NR Engineering Co., Ltd
- 申请人地址: CN Jiangsu; CN Jiangsu
- 专利权人: NR Electric Co., Ltd,NR Engineering Co., Ltd
- 当前专利权人: NR Electric Co., Ltd,NR Engineering Co., Ltd
- 当前专利权人地址: CN Jiangsu; CN Jiangsu
- 代理机构: Panitch Schwarze Belisario & Nadel LLP
- 优先权: CN201710788447.3 20170905
- 国际申请: PCT/CN2018/087796 WO 20180522
- 国际公布: WO2019/047559 WO 20190314
- 主分类号: H02J3/12
- IPC分类号: H02J3/12 ; H02J3/36 ; H02J3/46
摘要:
Disclosed are a control method and system for a parallel converter system, including a common AC voltage controller and a separate current controller for each converter; the AC voltage controller generates an active current, a wattless current, and a system voltage phase reference value and, by means of communication, sends same to the current controller of each converter in island control mode to be a converter control signal; the active and wattless current outputted by each converter, along with the corresponding current reference value, accomplish the objective of the parallel converter system collectively controlling the amplitude and frequency of an AC bus voltage. The method and system are highly reliable and effectively ensure the synchronization of a plurality of converters.