| Title |
New Three-Phase Static Transfer Switch using AC SSCB |
| Authors |
송승민(Seung-Min Song) ; 김진영(Jin-Young Kim) ; 김인동(In-Dong Kim) |
| DOI |
http://doi.org/10.5370/KIEE.2018.67.5.626 |
| Keywords |
Static Transfer Switch(STS) ; Solid-state Circuit Breaker(SSCB) ; Short-circuit fault ; Sag ; Swell ; AC grid |
| Abstract |
These days, widespread use of sensitive loads and distributed generators makes static transfer switch (STS) an essential component in power circuits to achieve a good power quality for AC Grids. In case of a short-circuit fault, previous STS cannot break the fault current. However, the proposed STS has the capability of breaking it quickly as a circuit breaker. Also if there are power quality problems such as Sag/Swell, the proposed STS can quickly transfers the load to the good quality source. Furthermore it is proved that the transfer time of the proposed STS is within one half of period of 3-phase source frequency regardless of the type of load. It is anticipated that the proposed STS may be utilized to realize many stable and reliable AC grid systems. |