Sökning: "voltage harmonics"

Visar resultat 1 - 5 av 62 avhandlingar innehållade orden voltage harmonics.

  1. 1. A precision wattmeter for non-sinusoidal conditions : based on an analysis of common measuring problems due to harmonics

    Författare :Stefan Svensson; RISE; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; sampling; wattmeter; non-sinusoidal; power; current; voltage; harmonics;

    Sammanfattning : .... LÄS MER

  3. 2. Converter Interfaced Distributed Generation - Grid Interconnection Issues

    Författare :Fainan Magueed; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; VSC; harmonics; LCL-filter; power quality; weak grid; voltage regulation; vector control; strong grid; distributed generation; intentional islanding; L-filter; voltage dips;

    Sammanfattning : Distributed generation (DG) with a converter interface to the grid is found in many of the green power resources applications. In this thesis, the control of a voltage source converter (VSC), as the DG front end, is in focus regarding the power quality problems that could appear at the connection point. LÄS MER

  4. 3. On Power Electronics Interface for Distributed Generation Applications and its Impact on System Reliability to Customers

    Författare :Fainan Magueed; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; LCL-filter; vector control; voltage dips; L-filter; power quality; voltage regulation; harmonics; distributed generation; weak grid; VSC; strong grid;

    Sammanfattning : Distributed generation (DG) is being employed as a means of achieving increased reliability for electrical power systems as regarded by consumers. As the most of DG technologies utilize renewable sources, the power electronic interface plays a vital role to match the characteristics of a DG unit with the grid requirements. LÄS MER

  5. 4. Power angle control of grid-connected voltage source converter in a wind energy application

    Författare :Jan Svensson; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; voltage angle control; simulation; wind power; power angle control; Linear Quadric control LQ ; bandwidth; Kalman filter; control; pulse width modulation PWM ; wind energy; voltage source converter VSC ; harmonics;

    Sammanfattning : .... LÄS MER

  7. 5. On Harmonics in Low-voltage Networks

    Författare :Naser Nakhodchi; Math Bollen; Sarah Rönnberg; Sasa Djokic; Luleå tekniska universitet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Electric Power Engineering; Elkraftteknik;

    Sammanfattning : On the road to reducing global warming, the use of renewable energy sources and efficient use of electricity are among the key aspects. The increasing number of energy efficient appliances such as LED lamps, booming demand for electric vehicles (EVs), and growing penetration of distributed energy resources such as photovoltaic (PV) systems in low-voltage (LV) networks are expected to affect the power quality in the entire electric power system and specifically in the LV network, where such new devices are connected. LÄS MER