leg regulates the voltages on their capacitors independently of the others. Main Features #12;AC/DC/AC C: value of the DC-link capacitors Voltage Oscillation Amplitude #12;AC/DC/AC Converters: TwoAC/DC/AC Converters: Two-Level and Multilevel VSI Page 1 Socrates � Erasmus Visit ...

Matrix converters offer certain advantages over conventional AC-DC-AC conversion such as elimination of reactive elements, inherent bi-directional power flow capability, increased reliability and compactness. This paper explores the reactive and harmonic compensation capability of a matrix converter. Space vector modulation technique ...

This paper proposes a novel control method based on the virtual AC/DC/AC conversion for the matrix converter. The virtual AC/DC/AC conversion method is a very simple strategy to control the input current and the output voltage for the matrix converter. There are two new topics proposed in this paper. Firstly, this ...

A power factor analysis of the input part of an advanced AC/DC/AC converter for variable speed wind turbines is presented. Two types of rectifying input converters are compared: the boost rectifier, consisting of three AC inductors, a three-phase diode br...

. However, reducing the CMV via PWM pulse pattern typically degrades the other modular performance supply AC-DC-AC power converter units. Pulse Width Modulation (PWM) is the standard approach to operate controlling the PWM pulse patterns is the most economical method as it requires no extra components and cost

This thesis proposes and investigates application of a three-phase AC-AC Matrix Converter (MC), as an alternative to the conventional AC-DC-AC converter system, to interface a Micro-Turbine-Generator (MTG) unit as a Distributed Generation (DG) unit to a utility distribution grid. As compared with a conventional ...

This research focuses on the development scheme of a power converter in a gas engine cogeneration system using a power hardware-in-the-loop simulation. A matrix converter is adopted to substitute a conventional ac/dc/ac converter and transfers three phase electricity to single phase electricity directly. To ...

... Characterizing the degradation of Army primers by the AC-DC-AC accelerated test method ... DC AC-DC-AC accelerated testing method Page 5. ...

Details are reported on the initial stages of engineering reference designs for 10-MWh and 10/sup 4/-MWh SMES units, and the design and status of a 100-MJ (28-kWh) SMES experiment. Several superconducting wires have been evaluated in 300-mm-i.d. coils. In these tests cables and braids consistently performed better than a monolithic conductor. Special circuits designed to detect ...

The assimilation of large numbers of large wind turbine generators into utility grids posses significant operational questions. This paper explores design and operational issues associated with the interconnection of wind farms using a controllable AC/DC/AC series-connected interface. The study is in terms of steady-state operation of and transient effects on both the power ...

Three phase ac/dc/ac converters operating with reduced reactive elements have been investigated in this work. It has been determined that the voltage sourced converter circuit topology results in a lower reactive element cost than a current sourced converter, independent of the switching strategy. With the topology ...

Ripple currents on the DC side of both HVDC synchronous and asynchronous. Links together with cleared HVDC and AC system disturbances can excite in some circumstances onerous torsional vibrations in large steam generator shafts. The problem has assumed importance in recent months on account of the HVDC Link between Scotland and Northern Ireland going ahead, on account of the proposed Eire/Wales ...

Ripple currents on the DC side of both HVDC asynchronous and synchronous Links can excite in some circumstances onerous torsional vibrations in large steam generator shafts. The problem has assumed importance in recent months on account of the HVDC Link between Scotland and Northern Ireland going ahead, on account of the proposed Eire/Wales Link, because AC/DC/AC couplers are ...

This paper is concerned with modeling the reliablity characteristics in both probability and frequency of large electric utility application wind turbine generators together with their associated utility interface equipment. A computationally efficient algorithm is developed and applied to a wind farm with a special AC/DC/AC interface currently under design. The effects of ...

Hybrid electric vehicles (HEVs) are driven by at least two prime energy sources, such as an internal combustion engine (ICE) and propulsion battery. For a series HEV configuration, the ICE drives only a generator, which maintains the state-of-charge (SOC) of propulsion and accessory batteries and drives the electric traction motor. For a parallel HEV configuration, the ICE is mechanically ...

Much of what is known today about hemipteran feeding biology, as well as mechanisms of their host plant interactions and transmission of phytopathogens, has been learned via use of electrical penetration graph (EPG) technology, originally called electronic monitoring of insect feeding. Key to all of this information has been the electronic designs of EPG monitors. It has been 45 years since the ...