Category | 2007

Nd-Fe-B Magnets are Going Offshore in Wind Mill Generators

Posted on 01 November 2019

    Wind Energy in Europe: Status, Hints and Potentials Using permanent magnets in wind mill generators may be of advantage regarding total weight and in special designs even the possibility to incorporate reliable easy gearboxes to reduce maintenance, effort and costs. By Dr. Denis Rollik and Bernd Schleede Vacuumschmelze GmbH & Co. KG, Hanau, [...]

Digital Measurement of Inverter Efficiency

Posted on 01 November 2019

      Measurements on over-modulation PWM An inverter is a type of electric power converter which converts DC into AC. When the DC signal is converted into AC, the output is a pseudo-AC signal which is made by changing the pulse width using a switching circuit. The modulation method used to change the pulse [...]

PIQC – Process Integrated Quality Control

Posted on 01 November 2019

      Multi-dimensional system for bond quality control without production An increasing number of products are focusing on zero failure targets. This implies consideration of every wire bond connection. Apart from the technical challenges for such quality targets, the increasing costs for more sophisticated and/or additional quality measurements have to be considered. By Dipl.-Ing. [...]

Increasing Efficiency in Secondary-Side Rectification

Posted on 01 November 2019

       Replacing Schottky diodes with MOSFETs Electronic products within a broad range of applications have evolved over recent years, taking advantage of advancing signal- and data-processing silicon technologies to achieve greater functional densities. Significant developments in both IC design and IC fabrication have accelerated this trend. By Mario Battello, Marketing Manager, iPOWIR Product [...]

Analysis Tool Covering Wide Application Range

Posted on 01 November 2019

       Portunus supports transient thermal simulations Nowadays simulation tasks go beyond the investigation of individual component behaviour. Despite electrical engineers naturally preferring different software tools to their colleagues developing mechanical components, virtual tests have to consider more than electrical values. This article lists the requirements for system simulation software and how they are [...]

Dedicated Current Monitors Boost System Performance

Posted on 01 November 2019

      To improve power dissipation, efficiency and reliability, electronic systems are increasingly depending on some form of continuous current measurement. Compared to alternative discrete and integrated solutions, dedicated current monitor ICs provide a simple and yet very accurate means of current measurement for a broad range of applications. By Simon Ramsdale, Standard ICs [...]

PLECS – The User-friendly Simulation Program for Power Electronics

Posted on 01 November 2019

       A new approach to simulating power electronic circuits together with their controllers System simulators allow the simple creation of controllers but the power electronics they control must then be described by circuit equations. On the other hand, circuit simulators allow simple circuit creation but the interface to the controller is generally more [...]

New Applications for Optical Sensors

Posted on 01 November 2019

       Triangulation sensor instead of camera Infrared sensors that work using the triangulation principle also measure accurately on reflective surfaces and are not affected by either light scatter or high temperatures. When used with a pyroelectric resistor, the wide-angle versions can even distinguish between people and objects. They can therefore be used in [...]

Architecting Digital Power ICs to Speed the Adoption of Digital Power

Posted on 01 October 2019

       Analog Power with Digital Communication and Control The adoption of digital power solutions has been slower than expected in spite of the now large number of digital power ICs on the market. The adoption of digital power solutions can be accelerated by architecting digital power conversion chips which can be readily integrated [...]

High Voltage SPT+ Diodes

Posted on 01 October 2019

      The Perfect Match The newly developed SPT+ diode technology platform for 3.3kV, 4.5kV and 6.5kV diodes for next generation high power IGBT modules is described in this article. The new diode range offers low losses and soft recovery characteristics combined with a high reverse recovery safe operating area and superior surge current [...]