Transient Modeling and Analysis of VSC Based DC Microgrid During Short Circuit Fault

A New Circuit Topology for Open Circuit and Short Circuit Fault Tolerant Dc - Dc Converter

This paper describes a new design for a fault tolerant Hbridge dc-dc converter. Open circuit and short circuit fault tolerance is achieved using multilevel converter topology in combination with pulse width modulation control strategy allowing a large set of converter switching states to produce bidirectional power flows at any required output voltage. If two switches fail at particular instant...

Dynamic Harmonic Modeling and Analysis of VSC-HVDC Systems

Harmonics have become an important issue in modern power systems. The widespread penetration of non-linear loads to emerging power systems has turned power quality analysis into an important operation issue under both steady state and transient conditions. This paper employs a Dynamic Harmonic Domain (DHD) based framework for dynamic harmonic analysis of VSC-HVDC systems. These systems are wide...

Short Circuit and Induced Voltage Transient Study on a Planned 1000 MW HVDC-VSC Cable Link

TERNA, the Italian TSO, is planning new HVDC interconnections with neighboring countries including underground links based on VSC technology; short circuit transient studies of such links require accurate cable line modeling in a frequency range from dc to 10 kHz at least. The finite section approach was used to this purpose. Short-circuit transient simulation results evidenced significant temp...

A Comprehensive Mathematical Model for Analysis of WR-Resolvers under Stator Short Circuit Fault

Wound-Rotor (WR) resolvers are the most widely used position sensors in applications with harsh environmental conditions. However, their performance is exposed to failure due to the high risk of short circuit (SC) fault. Although the output current of the resolver is negligible, its thin copper wires increase the probability of the short circuit fault. To avoid the propagation of the turn-to-tu...

Ground Fault Location of Cable Using Wavelet in DC Microgrid