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公开(公告)号：EP3531531A1
公开(公告)日：2019-08-28
申请号：EP18739264.2
申请日：2018-01-12
发明人： DING, Jiudong , LU, Yu , DONG, Yunlong , LI, Haiying , TIAN, Jie , QIU, Defeng , JIANG, Tiangui , LIAN, Jianyang
IPC分类号： H02J7/04
摘要： The present invention discloses a charging method for a sub-module based hybrid converter. By setting a half-controlled charging link of changing full bridge sub-modules from a blocked state to a half-blocked state one by one in a charging process, and raising the voltages of half bridge sub-modules to reach the starting point of a half bridge sub-module based self-powered supply in an uncontrolled stage of the half bridge sub-modules, the starting point of the sub-module based self-powered supply is increased, and the design difficulty of the sub-module based self-powered supply is reduced. The present invention also discloses another charging method for a sub-module based hybrid converter. The above objective can also be achieved by setting a half-controlled charging link of changing the full bridge sub-modules from a blocked state to a bypassed state one by one in the charging process.
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公开(公告)号：EP3958454A1
公开(公告)日：2022-02-23
申请号：EP20854635.8
申请日：2020-07-15
发明人： ZHANG, Zhongfeng , XIE, Yeyuan , CAO, Dongming , FANG, Taixun , SHENG, Xiaodong , YANG, Chen , LIAN, Jianyang
IPC分类号： H02M5/458
摘要： A solid-state transformer comprises a plurality of power units (100). Each of the plurality of power units (100) comprises a high-voltage side module (110), a low-voltage side module (120), and an isolation transformer (130). The isolation transformer (130) comprises a high-voltage winding (131), a low-voltage winding (132), and an iron core (133). The high-voltage winding (131) is wound on the iron core (133) and connected to the high-voltage side module (110). The low-voltage winding (132) is wound on the iron core (133) and connected to the low-voltage side module (120). The iron core (133) is in near equipotential connection to the high-voltage side module (110) or the low-voltage side module (120) by means of a conductive medium to fix the floating potential of the iron core (133).
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3.发明公开
公开(公告)号：EP3799244A1
公开(公告)日：2021-03-31
申请号：EP19819033.2
申请日：2019-03-20
发明人： XIE, Yeyuan , WANG, Yu , LIAN, Jianyang , DUAN, Jun , LIU, Hongde
IPC分类号： H02J3/32
摘要： Provided in the present application is an energy storage unit separated converter, and a system thereof, and a control method thereof. The energy storage unit separated converter comprises a power electronic conversion unit, at least one separated energy storage unit, and a first switch set; the first switch set is in series connection between the energy storage unit and a direct current side of the power electronic conversion unit, and the energy storage unit and the power electronic conversion unit may be separated by means separating a positive electrode switch and negative electrode switch in the first switch set.
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公开(公告)号：EP3651305A1
公开(公告)日：2020-05-13
申请号：EP18828186.9
申请日：2018-04-19
发明人： XIE, Yeyuan , WANG, Yu , LI, Haiying , LIAN, Jianyang , ZHANG, Zhongfeng , TIAN, Jie
IPC分类号： H02J3/38
摘要： Provided are a chained multi-port grid-connected interface apparatus and a control method therefor. The chained multi-port grid-connected interface apparatus comprises: a commutation chain, at least one direct-current converter, and at least one direct-alternating converter, wherein the commutation chain is formed by at least two sub-module units connected in series in the same direction, one end of the direct-current converter is connected to a direct-current end of the sub-module unit, and the other end is a direct-current interaction port of the chained multi-port grid-connected interface apparatus, a direct-current connection end of the direct-alternating converter is connected to the direct-current end of the sub-module unit, and an alternating-current connection end is an alternating-current interaction port of the chained multi-port grid-connected interface apparatus. The chained multi-port grid-connected interface apparatus provides multiple ports independent from each other for the access of a low-voltage power supply, loads and an energy storage unit, realizing plug and play, thereby greatly reducing the implementation difficulty and cost.
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公开(公告)号：EP3531532A1
公开(公告)日：2019-08-28
申请号：EP18739444.0
申请日：2018-01-12
发明人： DING, Jiudong , LU, Yu , DONG, Yunlong , LI, Haiying , TIAN, Jie , QIU, Defeng , JIANG, Tiangui , LIAN, Jianyang
IPC分类号： H02J7/04
摘要： The present invention discloses a charging method for a sub-module based hybrid converter. By setting a half-controlled charging link of half-blocking all full bridge sub-modules in a charging process, and raising the voltages of half bridge sub-modules to reach the starting point of a half bridge sub-module based self-powered supply in an uncontrolled stage of the half bridge sub-modules, the starting point of the sub-module based self-powered supply is increased, and the design difficulty of the sub-module based self-powered supply is reduced. The present invention also discloses another charging method for a sub-module based hybrid converter. The above objective can also be achieved by setting a half-controlled charging link of bypassing all full bridge sub-modules in the charging process.
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