A new passive Power Factor Corrector (PFC) based on Valley Fill (VF) is proposed for an off-line Flyback converter. By adding an extra winding which is magnetically coupled to the Flyback transformer and electrically coupled to the VF, higher Power Factor (PF) and lower Total Harmonic Distortion (THD) can be achieved. The proposed circuit uses a high frequency inductor, low voltage capacitors t...

Solid-state circuit breakers (SSCB) show great promise to become the key element in protection of low-voltage direct current microgrids. SSCBs operate microsecond range and employ semi-conductor devices that have strict safe operation area limits. Therefore, design SSCB needs consider effects fault detection delays limitations. This paper derives criteria effect different methods with under var...

A new source follower circuit using low-temperature polycrystalline silicon thin film transistors (LTPS-TFTs) as analog buffer for the integrated data driver circuit of active matrix liquid crystal displays (AMLCDs) and active matrix light emitting diodes (AMOLEDs) is proposed and measured. Threshold voltage compensation circuit with two n-type thin film transistors, a capacitor, and four switc...

This paper identifies a conventional flipped voltage follower (FVF) for high performance, low-voltage and low-power applications. This basic circuit is used as a voltage buffer, impedance matching and a level shifter. It presents more suppleness in contrast to the basic voltage follower as dc voltage level can be amended by varying aspect ratio of the MOS transistors. However, gain of the flipp...

in this paper, power system restoration in the presence of svc and tcsc in partial outage conditions is considered and a new method for maximum load restoration using different control variables is presented. control variables are tap of transformers, generation rescheduling and operating points of facts devices. objective function is restored load (to be maximized) and constraints are voltage ...