Invention Application
- Patent Title: Arrangement for Current Sharing of Parallel-Connected Converters
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Application No.: US18746133Application Date: 2024-06-18
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Publication No.: US20240429833A1Publication Date: 2024-12-26
- Inventor: Tero Viitanen , Veli-Matti Leppänen , Peter Muszynski
- Applicant: ABB Schweiz AG
- Applicant Address: CH Baden
- Assignee: ABB Schweiz AG
- Current Assignee: ABB Schweiz AG
- Current Assignee Address: CH Baden
- Priority: EP23180670.4 20230621
- Main IPC: H02M7/493
- IPC: H02M7/493 ; H02M7/5395

Abstract:
Current sharing between the plurality of parallel-connected ARCP or hard-switching converter legs is balanced by a control arrangement. The control arrangement senses a leg output current in each of the parallel-connected converter legs and have an individual autonomous leg-specific switching instant adjustment for the main switches of each of the parallel-connected converter legs to shift the first mode A commutation of the respective converter leg later in time and to shift the second mode B commutation of the respective converter leg earlier in time by a variable timestep proportional to the value of the sensed leg current of the respective converter leg. In other words, if the value of the sensed leg output current in one converter leg is larger than in the other converter leg, then in mode A, the higher-current leg will commutate later than the leg with less current, and in mode B, the higher-current leg will commutate earlier than the leg with less current.
Information query
IPC分类: