Investigation of low-voltage solid-state DC breaker configurations for DC microgrid applications
- 21 November 2016
- conference paper
- Published by Institute of Electrical and Electronics Engineers (IEEE)
- p. 1-6
Abstract
Among current research issues of dc microgrids, short-circuit protection is very challenging because of the high rate of rise for the fault currents. Slow-acting electromechanical circuit breakers lead to system overdimensioning resulting in additional costs. Circuit breakers based on power semiconductor devices have the potential of fast interruption of fault currents. Unfortunately, the energy stored in parasitic inductors or system inductive components have the potential of resulting in overvoltage across the solid-state circuit breaker (SSCB). Metal oxide varistor (MOV), snubber circuits and freewheeling diodes are used to protect the semiconductor devices against overvoltage. Six configurations for a voltage clamp for a SSCB are analyzed in this paper when inductive components are present on the load sides. Finally, the experimental results verified that series connected diode and MOV clamping provides better overvoltage protection for the SSCB.Keywords
This publication has 14 references indexed in Scilit:
- Short-circuit protection for low-voltage DC microgrids based on solid-state circuit breakers2016
- Design of test-circuits for HVDC circuit breakers2015
- A new topology of fast solid-state HVDC circuit breaker for offshore wind integration applications2015
- DC Microgrids—Part II: A Review of Power Architectures, Applications, and Standardization IssuesIEEE Transactions on Power Electronics, 2015
- Converter topological and solid state protective device trade-offs for future shipboard MVDC systems2015
- A silicon carbide fault current limiter for distribution systems2014
- Separation of the Energy Absorption and Overvoltage Protection in Solid-State Breakers by the Use of Parallel VaristorsIEEE Transactions on Power Electronics, 2014
- Discovering DC: A Primer on dc Circuit Breakers, Their Advantages, and DesignIEEE Industry Applications Magazine, 2013
- Demonstration of a 600-V, 60-A, bidirectional silicon carbide solid-state circuit breaker2011
- Bus Selection in Multibus DC MicrogridsIEEE Transactions on Power Electronics, 2010