Title :
Modified z-source DC circuit breaker topologies
Author :
Overstreet, Allan ; Maqsood, Atif ; Corzine, K.
Author_Institution :
Dept. of Electr. & Comput. Eng., Clemson Univ., Clemson, SC, USA
Abstract :
The z-source breaker has been introduced as a new circuit for quickly and automatically switching off in response to faults. A modified z-source breaker design is introduced for operation at medium-voltage dc with future applications in naval ship power systems. Compared to existing designs the respective design will allow for step changes in load. This new design also limits capacitor current in the circuit and can be easily modified for fault detection. Analysis of the breaker operation is presented during both fault and step changes in load. Low voltage laboratory validation of the breaker was carried out on two different versions of the proposed circuit.
Keywords :
capacitors; circuit breakers; fault diagnosis; topology; automatically switching; capacitor current; fault detection; low voltage laboratory validation; medium-voltage dc; naval ship power systems; z-source DC circuit breaker topologies; Capacitors; Circuit faults; Load modeling; Resistors; Steady-state; Thyristors; Transient analysis; Circuit breakers; Medium Voltage DC; Power system protection; RLC circuits; Thyristors circuits;
Conference_Titel :
Power Systems Conference (PSC), 2014 Clemson University
Conference_Location :
Clemson, SC
DOI :
10.1109/PSC.2014.6808121
