A fast fault simulation approach based on ordinary logic emulation is proposed. The circuit configured into our system that emulates the faulty circuit’s behavior is synthesized from the good circuit and the given fault list in a novel way. Fault injection is made easy by shifting the content of a fault injection scan chain or by selecting the output of a parallel fault injection selector, with...

Predicate-based statistical fault-localization techniques find fault-relevant predicates in a program by contrasting the statistics of the evaluation results of individual predicates between failed runs and successful runs. While short-circuit evaluations may occur in program executions, treating predicates as atomic units ignores this fact, masking out various types of useful statistics on dyn...

Short-Circuit (SC) current sharing in parallel connected SiC MOSFETs and Cascode JFETs have been investigated using experimental measurements finite element models. Device parametric variation between devices contributes to uneven reduced module robustness against SC events. Experimental show that threshold voltage is the most critical parameter MOSFETs, more so than device switching rate initi...

In order to improve the classification accuracy of recognizing short-circuit faults in electric transmission lines, a novel detection and diagnosis method based on empirical wavelet transform (EWT) and local energy (LE) is proposed. First, EWT is used to deal with the original short-circuit fault signals from photoelectric voltage transformers, before the amplitude modulated-frequency modulated...

Like the widely-used semiconductor switch, Insulated Gate Bipolar Transistors (IGBTs) are subject to many failures and degradation in power electronic converters. In Short Circuit Fault (SCF), as most reported IGBTs, drastic, sudden temperature rise, peak SCF current widespread owing a relatively long delay of protection subsystem. This paper proposes strategy limit junction rise by limiting ad...

The series-connected offshore wind farm (SC-OWF) is a promising generation solution to mitigate the need of centralized high-voltage/power converter stations. Predominantly, researchers have focused on steady-state operation and control SC-OWFs, without considering system-level characteristics ability ride-through dc side ac network faults. This paper proposes an enhanced system for SC-OWF appl...

A two level fault tolerant voltage sourse inverter(VSI) for permanent magnetic drives is designed and tested. Generally a two level inverter consists of three legs. In this case an extra (redundant ) leg is added that replaces the fault leg. Extra leg is added by using by back to back connected thyristor this inverter works on both open circuit and short circuit fault. The main advantage is pos...

In this brief paper, the dependency of short-circuit power on threshold voltage is analyzed and utilized for short circuit (SC) power reduction in multi-threshold (MTCMOS) processes. Analytical expressions are developed for estimation of the change of ratio between short-circuit power and dynamic power (PSC/Pdyn) while changing the design process. The analysis shows that the PSC/Pdyn ratio can ...

 Protective relays work in concert with sensing and control devices to accomplish their function. Under normal power system operation, a protective relay remains idle and serves no active function. But when fault or undesirable condition arrives Relay must be operated and function correctly.  A Power System consists of various electrical components like Generator, transformers, transmission l...