Increasing the short circuit current due to the penetration of distributed generations (DGs) in various voltage levels and meshed topology is a basic problem in power systems. Using fault current limiter (FCL) is an efficient approach to mitigate the exceeded short circuit levels. In this paper, a new approach is presented for multiple FCLs locating to decrease short circuit levels in meshed ne...

Quasi-2-level (Q2L) operation of multi-level bridge-legs, especially flying-capacitor converters (FCC), is an interesting option for realizing single-cell power conversion in applications whose system voltages exceed the ratings available semiconductors. To ensure equal voltage sharing among a Q2L-FCC’s switches, minimized flying capacitors (FCs) must always be balanced. Thus, we propose concep...

A new design of level-up and level-down shifter for low-power and high speed applications has been presented. Level-up and level-down operations can be perform by using the new well-organized Transmission gate Voltage Level Shifter (TVLS). In this paper a novel voltage level shifter have introduced that performs level-up shift or level-down shifts. In this, the circuit watch its input logic vol...

voltage stability may be improved by various control functions. in this paper, it is shown that how high side voltage control (hivc) may be employed for this purpose. two test systems, namely a 22- bus and ieee u8-bus systems are used to demonstrate the proposed tuning strategy for hsvc control parameters.

Electronic circuits require a wide variety of voltage levels to operate correctly. A DC/DC converter (DC/DC) is an electronic circuit used either to transform one voltage level to a different level; or to provide an isolation barrier for a voltage bus. DC/DCs are typically used in power distribution systems to provide a local voltage conversion, point of load voltage regulation or power bus iso...