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Showing result 1 - 5 of 17 swedish dissertations matching the above criteria.

  1. 1. On harmonic distortion in power systems

    University dissertation from Chalmers University of Technology

    Author : Johan Lundquist; Chalmers tekniska högskola.; Chalmers University of Technology.; [2001]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; power quality; harmonic distortion; power sustem monitoring; rectifiers; drives; converters; voltage notching; active power; losses; harmonic propagation; resonance; harmonic filter; unbalance;

    Abstract : .... READ MORE

  2. 2. Three-phase unbalance of voltage dips

    University dissertation from Chalmers University of Technology

    Author : Lidong Zhang; Chalmers tekniska högskola.; Chalmers University of Technology.; [1999]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; power systems; power quality; voltage dips sags ; symmetrical components; characterisation; field measurement; equipment immunity test;

    Abstract : .... READ MORE

  3. 3. Estimation and Control of Resonant Systems with Stochastic Disturbances

    University dissertation from Uppsala : Acta Universitatis Upsaliensis

    Author : Peter Nauclér; Uppsala universitet.; Uppsala universitet.; [2008]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; vibration control; stochastic control; stochastic systems; feedforward control; Wiener filtering; Kalman filtering; wave separation; unbalance estimation; nonlinear regression; TECHNOLOGY Information technology Automatic control; TEKNIKVETENSKAP Informationsteknik Reglerteknik;

    Abstract : The presence of vibration is an important problem in many engineering applications. Various passive techniques have traditionally been used in order to reduce waves and vibrations, and their harmful effects. Passive techniques are, however, difficult to apply in the low frequency region. READ MORE

  4. 4. On Fluid Power Piston Pumps : With Special Reference to Flow Ripple Reduction

    University dissertation from Linköping : Linköpings universitet

    Author : Maria Pettersson; Linköpings universitet.; Linköpings universitet.; [1993]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY;

    Abstract : Among the major disadvantages of fluid power systems, leakage and an unpleasant sound level can be mentioned. Both drawbacks increase with increasing pressure ripple. Functional problems may be caused, even fatigue and breakdown. A main source of noise is hydrostatic pumps. READ MORE

  5. 5. Operation and control of cascaded H-bridge converter for STATCOM application

    University dissertation from Chalmers University of Technology

    Author : Ehsan Behrouzian; Chalmers tekniska högskola.; Chalmers University of Technology.; [2016]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Modular Multilevel Converters MMC ; cascaded H-bridge converters; STATCOM; FACTS.;

    Abstract : In the last decade, particular attention has been paid to the use of Modular Multilevel Converters (MMC) for grid applications. In particular, for STATCOM applications the phase leg of the converter is constituted by a number of single-phase full-bridge converters connected in cascade (here named Cascaded H-Bridge, CHB, converter). READ MORE