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Single switch capable of blocking 10 kV and higher voltages are presently being developed and demand improved gate drivers for their functioning. Induction based gate drivers have been the foremost solutions in this regard. Design challenges that have been outlined for these drivers are low coupling capacitance, strong magnetic coupling and smaller dimensions with isolation not considered in depth...
Transmission congestion is one of the most challenging issues in operation of deregulated electricity markets of today. This study investigates into benefit of unified power flow controller (UPFC) as a viable solution to the problem of congestion management. A comprehensive load flow model for the UPFC is presented which has the capability to control active and reactive powers and voltage magnitude...
In this paper, we present measurement results from a prototype chip (fabricated in 130 nm CMOS technology), designed to extract maximum power from a Thermoelectric Generator (TEG). From analytical expression, we prove that the maximum extracted power is around 75% of the available power in a TEG, without using a closed loop maximum peak power tracking to regulate the input voltage. In our measurements,...
This paper presents a harmonics current-less AC-DC power conversion system with the integration of a series active compensator to a large-rated double series diode rectifier. The series active compensator and the diode rectifier are directly connected in parallel thus shares a common dc bus. Due to this compensator, the diode rectifier draws three-phase sinusoidal currents from AC mains. In addition,...
The enhancement of voltage stability using Thyristor Controlled Series Capacitor (TCSC) and Static Synchronous Series Compensator (SSSC). The power system can limit the amount of power that can be transmitted in the system and therefore leads to voltage instability and under heavy loaded conditions there may be insufficient reactive power causing the voltages to drop. FACTS devices can regulate the...
A single-phase series active compensator is proposed to mitigate voltage sag, swell and voltage harmonics along with reducing harmonic currents at the AC mains. The DC link capacitor of the series active compensator is shared with a voltage fed load thus having a common DC link. The common DC link has an advantage of reduced component and immune to the wide variation in the voltage of AC mains, thus...
A voltage source inverter (VSI) is employed to implement a variable frequency drive (VFD) for obtaining desired speed-torque characteristics of an AC motor which is normally fed by a diode rectifier at the front end. These uncontrolled converters inject excessive harmonic currents in to AC mains resulting in detoriated power quality in terms of AC voltage waveform distortionat the point of common...
This paper presents the hardware implementation of 12/24V closed loop boost converter using dSPACE 1104 controller board for lamp load. The proposed system consists of 12V battery, closed loop boost converter and 24V lamp load. The closed loop boost converter is used to boost the 12V input DC voltage to 24V DC output. To regulate the output of the converter, feedback voltage is given to dSPACE controller...
In this paper, a CSD (Current Synchronous Detection) based control of a grid interfaced SPV (Solar Photovoltaic) power generating system is proposed with an improved power quality at ac mains. A two-stage SPV based grid interfaced three-phase four-leg VSC (Voltage Source Converter) based system is designed and modeled in order to achieve the compensation of reactive power for ZVR (Zero Voltage Regulation)...
In this paper, a configuration of a single-phase bidirectional AC-DC converter and bidirectional DC-DC converter is proposed to transfer electrical power from the grid to an electrical vehicle (EV) and from an EV to the grid while keeping improved power factor of the grid. In first stage, a 230 V 50 Hz AC supply is converted in to 380V dc using a single-phase bidirectional AC-DC converter and in the...
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