■ User Adjustable Slope Compensation The LT1680 is a high power, current mode switching power supply controller optimized for boost topologies. The IC drives an N-channel MOSFET switch for DC/DC converter applications up to 60V input. A high current gate drive output handles up to 10,000pF gate capacitance, enabling the construction of high power DC/DC converters. Current sense common mode rang...

The firing angle control of thyristor full wave ac-dc converters to set the desired DC bus voltage in Uninterruptible Power Supply (UPS) systems have drawbacks of pulsating input current, high harmonic content, low pf, low efficiency and large size of inductors and filters. International standards impose several constraints concerning the electric power quality and harmonic content of the line ...

The measurement of power output (PO) during cycling has led some manufacturers to develop mobile power meters. However, such devices have to provide a valid, sensitive and reproducible PO. This study aimed to determine the validity, sensitivity and reproducibility of the Stages and Garmin Vector during both laboratory and field cycling tests. The results demonstrate that the Stages and the Garm...

With the steadily increasing penetration of distributed generation (DG) in electric power systems, concerns have been raised that reliable and safe electricity supply might be jeopardized by a further deployment of decentralized power plants. In this context, Power Quality (PQ) and more generally the Quality of Supply (QoS) are key issues which have recently gained increased attention. QoS has ...

Large perceptual class motor load is the main production equipment of metallurgical enterprise, although has taken independent secondary substation power supply mode, but due to the influence of the impact load, Often appears on the bus voltage drop and low power factor and harmonic big problems, , this article is based on SVC compensation control mechanism, the sectional control mode, the prin...

Although improving the power-supply power factor (PF) can offer significant and necessary reductions in distribution losses, it is usually assumed that adding an active power-factor correction (PFC) stage will reduce the supply’s internal efficiency. It doesn’t have to be this way. This topic shows that several new system architectures are possible that can minimize system losses, accommodate a...

In order to validate the different functions of a low voltage microgrid, a specific test configuration has been set up in the Design Centre for Modular Systems Technology (“DeMoTec”) of the Institut für Solare Energieversorgungstechnik (ISET). In this highly innovative microgrid configuration, the grid control is distributed among three distant inverters which are not linked by any fast communi...

This paper describes the integration of power electronic and energy storage applications in distribution substations. Auxiliary circuits must provide motor-driven power switches, protection relays and telecontrol systems with constant power supply, thus minimising power outages and their negative effects on consumers. Requirements on the apparatus are proportional to the distributed voltage lev...

Nowadays, Military products of superpowers countries have a high level of diversity, delivery speed, and appropriative operational functionality. Therefore, Production of varied, high quality and high speed delivery military products, is essential for enhance Iran's defensive deterrence power. Defense industries supply chain agility is an answer to how to produce military products with these f...