A two-stage power conditioning circuit consisting of an AC DC converter followed by a DC DC converter is proposed for a vibration-based energy harvesting system. The power conditioning circuit intends to maximize the amount of power extracted from a piezoelectric energy harvester by matching the source impedance with the circuit by adaptively adjusting the duty cycle. An equivalent electrical c...

The main goal of the project is to develop a VME standard board with two independent radiofrequency inputs. Fast 12 bits A/D converter will digitize each channel at max. rate 40 MHz. After digitalization signal will be down converted by DDC (Harris HSP-50016 Digital Down Converter) with fully programmed intermediate frequency as well as phase. Detected signal from the DDC will be send to TMS320...

In this paper a novel four-leg interleaved DC-DC boost converter is proposed which is well suitable for fuel cell vehicles (FCV) application. The voltage stress of two switches of this converter is half of the conventional interleaved converters. Therefore, smaller and cheaper switches can be utilized. Also "on" state duration of the two of four switches are reduced in comparison with...

Turbo-generators can be subjected to negatively damped subsynchronous frequency oscillations caused by the interactions between the generator and the external network. This phenomena is termed as subsynchronous resonance(SSR) and it is well known that series compensated ac lines are the major contributors. In recent years, it has been established that HVDC systems with converter controllers can...

DC voltage and Josephson Within the JRPs “Q-wave” (finished in 2016) and its successor “QuADC” (started in 2016) VSL is working on the practical and theoretical aspects of quantum waveform metrology, including generation of arbitrary Josephson signals, the deviation problem of voltage leads at higher frequencies, a Josephson delta-sigma converter, voltage scaling and uncertainty calculations. A...

In the voltage source power electronic converter, DC-link capacitors usually work as buffering elements between DC and AC sides. The high failure rate large space occupied by directly affect reliability density of converters. analysis calculation capacitor current is crucial to achieve refined design this work, methods are divided into three categories, according principle, namely, simulation m...

this paper presents a control strategy for fuel cell/energy storage power generation system during voltage sag conditions. the hybrid dc power sources are connected to grid using power electronic converters include dc-dc converter and grid connected voltage source inverter. the power from hybrid power sources is controlled during voltage sag by designing of control strategy for dc-dc converter....

in this paper, a novel approach for control of the dc-dc buck converter in high-power and low-voltage applications is proposed. designed method is developed according to state feedback linearization based controller , which is able to stabilize output voltage in a wide range of operation. it is clear that in high-power applications, parasitic elements of the converter may become comparable with...