A DC common bus current limiting and blocking device
By using blocking modules and blocking units in the DC common bus current limiting and blocking device, and utilizing IGBTs and control boards to achieve rapid current limiting and isolation blocking, the problem of current sharing and blocking when multiple energy storage converters are connected in parallel is solved, and the operational stability and maintainability of the equipment are improved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- HANGZHOU LIVOLTEK POWER CO LTD
- Filing Date
- 2025-04-08
- Publication Date
- 2026-05-26
AI Technical Summary
When multiple energy storage converters are connected in parallel, there are issues of current sharing and blocking, which can cause some modules to overload or malfunction. Existing technologies cannot achieve rapid current limiting and isolation, which affects the lifespan and normal operation of the equipment.
Design a DC common bus current limiting and blocking device, including a blocking module and a blocking unit. It uses IGBTs and control boards to achieve fast current limiting and isolation blocking. Temperature and current detection components generate control signals to control the on and off actions of the IGBTs. Combined with an RCD snubber circuit, the IGBTs are protected.
It enables rapid current limiting and isolation when multiple energy storage converters are connected in parallel, preventing abnormal current from affecting other equipment, improving system integration and reducing production costs, achieving high response speed and dynamic detection capabilities of the equipment, and supporting online maintenance.
Smart Images
Figure CN224289287U_ABST