Search for dissertations about: "current source inverter"

Showing result 1 - 5 of 7 swedish dissertations containing the words current source inverter.

  1. 1. Grid-Connected Voltage Source Converter - Control Principles and Wind Energy Applications

    University dissertation from Chalmers University of Technology

    Author : Jan Svensson; Chalmers tekniska högskola.; Chalmers University of Technology.; [1998]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Elektroteknik; elektronik och fotonik; Electrical engineering; electronics and photonics; voltage source converter; forced-commutated; grid-connected; measurements; wind turbine; frequency response; voltage angle control; vector current control;

    Abstract : The thesis focuses on a forced-commutated voltage source converter (VSC) connected to a grid in a wind energy application. The work consists of four parts. The first part addresses the type of electrical system which should be used in a wind turbine. READ MORE

  2. 2. Modelling and control of a line-commutated HVDC transmission system interacting with a VSC STATCOM

    University dissertation from Stockholm : KTH

    Author : Paulo Fischer de Toledo; KTH.; [2007]
    Keywords : Engineering and Technology Electrical Engineering; Electronic Engineering; Information Engineering; Teknik och teknologier Elektroteknik och elektronik; Keywords : HVDC transmission; LCC – Line-commutated Current-source Converter; STATCOM; VSC – Voltage Source Converter; Space-Vector complex vector ; transfer-function; frequency-domain analysis; TECHNOLOGY Electrical engineering; electronics and photonics; TEKNIKVETENSKAP Elektroteknik; elektronik och fotonik;

    Abstract : The interaction of an HVDC converter with the connected power system is of complex nature. An accurate model of the converter is required to study these interactions. The use of analytical small-signal converter models provides useful insight and understanding of the interaction of the HVDC system and the connected system components. READ MORE

  3. 3. VSC-HVDC for Industrial Power Systems

    University dissertation from Chalmers University of Technology

    Author : Cuiqing Du; Chalmers tekniska högskola.; Chalmers University of Technology.; [2007]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Elektroteknik; elektronik och fotonik; Electrical engineering; electronics and photonics; Elkraftteknik; Electric power engineering; VSC-HVDC; vector controller; outer controller; current limit; voltage dips; industrial power systems.;

    Abstract : The recent developments in semiconductors and control equipment have made the voltage source converter based high voltage direct current (VSC-HVDC) feasible. Due to the use of VSC technology and pulse width modulation (PWM) the VSC-HVDC has a number of potential advantages as compared with classic HVDC, such as short circuit current reduction, rapid and independent control of active and reactive power, etc. READ MORE

  4. 4. Robust Control of an Induction Motor Drive

    University dissertation from Stockholm : KTH

    Author : Henrik Mosskull; ; KTH.; [2006]
    Keywords : Engineering and Technology Electrical Engineering; Electronic Engineering; Information Engineering Control Engineering; Teknik och teknologier Elektroteknik och elektronik Reglerteknik; TECHNOLOGY Information technology Automatic control; TEKNIKVETENSKAP Informationsteknik Reglerteknik;

    Abstract : This thesis considers robust control of an induction motor drive, consisting of an input filter, a voltage source inverter and one or several induction motors in parallel. The motor torque is here controlled by using the method Indirect Self Control (ISC), and power oscillations between the inverter and the input filter are damped by means of a stabilization controller in an outer feedback loop. READ MORE

  5. 5. Harmonic Mitigation in Traction Drives

    University dissertation from Dept. of Industrial Electrical Engineering and Automation, Lund Institute of Technology

    Author : Hans Bängtsson; Lunds universitet.; Lund University.; [1999]
    Keywords : Mechanical engineering; hydraulics; converter; line interference; track circuit; Railway signalling system; vacuum technology; vibration and acoustic engineering; Maskinteknik; hydraulik; vakuumteknik; vibrationer; akustik; TEKNIKVETENSKAP; TECHNOLOGY;

    Abstract : In railway traffic the low friction between wheel and rail causes long braking distances, normally much longer than the sight distance of the driver, i.e. if the driver starts the braking when a problem on the track is discovered, it might be too late to brake the train. Therefore, safe railway traffic can not only rely on the driver. READ MORE