Magnetic Amplifier

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Aleksandar Dimitrovski - One of the best experts on this subject based on the ideXlab platform.

  • A Study of Magnetic Amplifier-based Power Flow Controller for Power System Stability Improvement
    Electric Power Components and Systems, 2016
    Co-Authors: Keman Lin, Kevin Tomsovic, Qiulan Wan, Aleksandar Dimitrovski
    Abstract:

    AbstractThis article presents a Magnetic Amplifier-based power flow controller as a new approach to control power flow based on a Magnetically saturated reactor concept. The Magnetic Amplifier-based power flow controller uses the Magnetic field as control medium to decrease the operating energy losses and increase system reliability. By providing continuous impedance, the Magnetic Amplifier-based power flow controller can suppress the inter-area oscillation and improve the system stability. A model of Magnetic Amplifier-based power flow controller is built and verified by lab experiments. A control strategy implementing the Magnetic Amplifier-based power flow controller is proposed to demonstrate the application of this new device to damp low-frequency oscillation in an interconnected power system. A comparative analysis of the controller's performance is carried out and incorporated with various input signals and multiple loading conditions. The simulations are conducted by power systems CAD (PSCAD, Mani...

  • Magnetic Amplifier-Based Power-Flow Controller
    IEEE Transactions on Power Delivery, 2015
    Co-Authors: Aleksandar Dimitrovski, Burak Ozpineci
    Abstract:

    The concept of the Magnetic Amplifier, a common electroMagnetic device in electronic applications in the past, has seldom been used in power systems. The Magnetic Amplifier-based power-flow controller (MAPFC), an innovative low-cost device that adopts the idea of the Magnetic Amplifier for power-flow control applications, is introduced in this paper. The uniqueness of MAPFC is in the use of the magnetization of the ferroMagnetic core, shared by an ac and a dc winding, as the medium to control the ac winding reactance inserted in series with the transmission line to be controlled. Large power flow in the line can be regulated by the small dc input to the dc winding. A project on the R&D of an MAPFC has been funded by the U.S. Department of Energy (DOE) and conducted by the Oak Ridge National Laboratory (ORNL), the University of Tennessee-Knoxville, and Waukesha Electric Systems, Inc. since early 2012. Findings from the project are presented along with some results obtained in a laboratory environment.

Göran Engdahl - One of the best experts on this subject based on the ideXlab platform.

B W Williams - One of the best experts on this subject based on the ideXlab platform.

  • medium voltage 12 pulse converter output voltage harmonic compensation using a series apf
    IEEE Transactions on Industrial Electronics, 2014
    Co-Authors: M S Hamad, Mahmoud I Masoud, B W Williams
    Abstract:

    In this paper, compensation of the dc-side voltage harmonics of a medium-voltage (MV) 12-pulse ac/dc converter is achieved using a series active power filter (APF). The output voltage harmonics are dependent on the converter firing delay angles and, consequently, on the specific power locus followed by the ac/dc converter. This power locus ensures minimum fifth and seventh harmonics (total rms) in the input current which provides minimum input current total harmonic distortion when the reactive power is less than 0.5 p.u. The series APF is connected between the load and the converter output via a Magnetic Amplifier to eliminate the dc current from the APF inverter, thus reducing inverter losses. Voltage harmonic compensation using a series APF, with and without a Magnetic Amplifier, is examined with both resistive and inductive loads. The simulation results for compensating a 3.3-kV MV 12-pulse converter system are experimentally verified using a scaled prototype 12-pulse converter with a series APF.

Lars Austrin - One of the best experts on this subject based on the ideXlab platform.

Wang Yan-peng - One of the best experts on this subject based on the ideXlab platform.

  • A Design of ATX Power Supply Based on Magnetic Amplifiers
    Power Supply Technologies and Applications, 2009
    Co-Authors: Wang Yan-peng
    Abstract:

    A type of ATX power supply based on Magnetic Amplifier is designed in this paper.The power supply can realize the accurate adjustment of output voltage through the Magnetic Amplifier and thus obtain +3.3V output with high stability.Our method can significantly simplify the design of secondary circuits.In the paper,we analyze the basic principles and the design of Magnetic Amplifier circuit in detail and then introduce the design of main circuit for 145W multi-output PC switching power.

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