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Dive into the research topics where Kim B. Larsen is active.

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Featured researches published by Kim B. Larsen.


IEEE Transactions on Industrial Electronics | 2004

Evaluation of modulation schemes for three-phase to three-phase matrix converters

Lars Helle; Kim B. Larsen; Allan Holm Jørgensen; Stig Munk-Nielsen; Frede Blaabjerg

This paper presents a method for evaluating different modulation schemes employed with three-phase to three-phase matrix converters. The evaluation method addresses three important modulator characteristics: the output waveform quality, the input waveform quality and the switching losses associated with the modulation schemes. The method is used to evaluate four different modulation strategies, all based on the direct space-vector modulation approach. Further, regarding the switching losses, the paper proposes a new space-vector approach by which the switching losses can be reduced by 15%-35%, depending on the output load angle. This new modulation approach is applicable whenever the output voltage reference is below half the input voltage and the output voltage quality is then superior to that of the conventional space vector modulation scheme. The functionality of the new modulation scheme is validated by both simulations and experimental results and compared to waveforms obtained by using exiting space vector modulation schemes. The output voltage of the proposed scheme turns out to be comparable to the best of the conventional schemes while the input current is more distorted.


applied power electronics conference | 2009

A General Solution for Theoretical Harmonic Components of Carrier Based PWM Schemes

Heng Deng; Lars Helle; Yin Bo; Kim B. Larsen

In this paper, a general solution for the theoretical PWM harmonic components is presented. Analytical solutions of harmonic components for all PWM schemes can be easily achieved by using it. The method is applicable irrespective of the pulse ratio between the carrier and the fundamental, and the computational requirements are essentially constant irrespective of the absolute value of the carrier frequency. Moreover, it is especially suitable for software calculation of theoretical harmonic components due to the ease of implementation. Compared with numerical integration method and conventional FFT scheme, the computation time of the proposed solution is much less. Simulation results of 5 popular PWM schemes are presented to verify the general solutions.


Archive | 2009

Variable speed wind turbine with doubly-fed induction generator compensated for varying rotor speed

Flemming Buus Bendixen; Gert Karmisholt Andersen; Kim B. Larsen


Archive | 2009

Variable Speed Wind Turbine, A Resonant Control System, A Method Of Operating A Variable Speed Wind Turbine, Use Of A Resonant Control System And Use Of A Method In A Variable Speed Wind Turbine

Gert Karmisholt Andersen; Kim B. Larsen; Flemming Buus Bendixen


Archive | 2009

Method and a controlling arrangement for controlling an AC generator

Yin Bo; Heng Deng; Kim B. Larsen


Archive | 2010

Method for controlling a power converter in a wind turbine generator

Yin Bo; Heng Deng; Kim B. Larsen; Lars Helle; Mogens Lau


Archive | 2010

SYSTEM AND METHOD FOR MONITORING POWER FILTERS AND DETECTING POWER FILTER FAILURE IN A WIND TURBINE ELECTRICAL GENERATOR

Yin Bo; John Godsk Nielsen; Kim B. Larsen; Ove Styhm Kristensen; Kheng Hong Ang


Archive | 2010

Wind park, method of correcting voltage imbalances, and wind turbine

Yin Bo; Heng Deng; Ove Styhm; Kim B. Larsen


Advanced prototyping tools for project- and problem-based learning | 2002

Advanced prototyping tools for project- and problem-based learning

Remus Teodorescu; Michael Møller Bech; Allan J. Holm; Kim B. Larsen; Frede Blaabjerg; John Kim Pedersen


Archive | 2008

Generator system with intelligent processing of position signal

Kim B. Larsen; Mogens Lau; Flemming Buus Bendixen

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