F. W. Fuchs

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Semiconductor losses in voltage source and current source IGBT converters based on analytical derivation

M. Bierhoff, F. W. Fuchs
IEEE 35th Annual Power Electronics Specialists…
2004

A crucial criterion for the dimensioning of three phase PWM converters is the cooling of the power semiconductors and thus determination of power dissipation in the semiconductors at certain… (More)

Comparison of three phase current source inverters and voltage source inverters linked with DC to DC boost converters for fuel cell generation systems

Malte Mohr, F. W. Fuchs
European Conference on Power Electronics and…
2005

Three phase current source inverters (CSI) and voltage source inverters linked with a DC to DC boost converter (VSI+BC) are appropriate solutions to convert electrical energy for distributed fuel… (More)

Fault Ride-Through of a DFIG Wind Turbine Using a Dynamic Voltage Restorer During Symmetrical and Asymmetrical Grid Faults

Christian Wessels, Fabian Gebhardt, F. W. Fuchs
IEEE Transactions on Power Electronics
2011

The application of a dynamic voltage restorer (DVR) connected to a wind-turbine-driven doubly fed induction generator (DFIG) is investigated. The setup allows the wind turbine system an… (More)

Performance of diagnosis methods for IGBT open circuit faults in three phase voltage source inverters for AC variable speed drives

Kai Rothenhagen, F. W. Fuchs
European Conference on Power Electronics and…
2005

Variable speed drives have become industrial standard in many applications. Therefore fault diagnosis of voltage source inverters is becoming more and more important. One possible fault within the… (More)

Performance of diagnosis methods for IGBT open circuit faults in voltage source active rectifiers

Kai Rothenhagen, F. W. Fuchs
IEEE 35th Annual Power Electronics Specialists…
2004

Fault diagnosis of electrical drives is becoming more and more important today, since variable speed drives have become industrial standard in many applications. As an integral part of the drive,… (More)

Some Diagnosis Methods for Voltage Source Inverters In Variable Speed Drives with Induction Machines A Survey

F. W. Fuchs
2004

Status monitoring and performance diagnosis for variable speed ac drives today is a need, more or less, depending on their application. Diagnosis can help to avoid unplanned standstill, to make… (More)

PWM rectifier with LCL-filter using different current control structures

Jörg Dannehl, F. W. Fuchs, Steffan Hansen
European Conference on Power Electronics and…
2007

The control of a PWM rectifier with LCL-filter using a minimum number of sensors is analyzed. In addition to the DC-link voltage either the converter or line current is measured. Two different ways… (More)

Current Sensor Fault Detection by Bilinear Observer for a Doubly Fed Induction Generator

Kai Rothenhagen, F. W. Fuchs
IECON - 32nd Annual Conference on IEEE…
2006

A bilinear observer is presented to detect current sensor faults in a doubly fed induction generator. The state space model is derived from the voltage equations of stator and rotor. The bilinear… (More)

Transformer based voltage sag generator to perform LVRT and HVRT tests in the laboratory

Christian Wessels, Ralf Lohde, F. W. Fuchs
Proceedings of 14th International Power…
2010

A transformer based voltage sag generator to test renewable energy systems is presented. Design considerations concerning overvoltages and overcurrents during switching action are adressed.… (More)

A review on fundamental grid-voltage detection methods under highly distorted conditions in distributed power-generation networks

Nils Hoffmann, Ralf Lohde, Manuel Fischer, F. W. Fuchs, Lucian Asiminoaei, P. B. Thogersen
IEEE Energy Conversion Congress and Exposition
2011

In distributed power generation systems a fast and accurate positive-sequence fundamental grid-voltage frequency and magnitude tracking is required to synchronize grid-connected converter-systems… (More)

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