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This paper presents the dynamic and steady state performance of a stand alone self excited induction generator (SEIG) with digitally controlled electronic load controller feeding single phase and three phase loads. The values of the capacitances are chosen to ensure self-excitation of the machine and to minimize the unbalance between the stator voltages. The excitation capacitors, ELC and load combined...
This paper presents the simulation studies on a cascaded H-bridge converter based distribution static synchronous compensator (DSTATCOM) for improving the power quality of a distribution system. Voltage source converter based DSTATCOM has been established as the most preferred solution for management of reactive power in distribution utilities and for improving voltage regulation, power factor and...
The pseudo continuous current mode (PCCM) operation of a boost converter can be treated as an intermediate between the continuous current mode (CCM) and discontinuous current mode (DCM) operation. The advantages in DCM operation and CCM operation can be effectively compromised to get this intermediate operation. In addition, the control flexibility and stability in DCM operation of a boost converter...
Energy storage devices are required for power quality maintenance in stand alone power systems like wind-diesel ones. A redox flow battery system has many virtues which make its integration with a wind-diesel power system attractive. This paper proposes the integration of a redox flow battery system with a typical multi-machine wind-diesel power system for simultaneous voltage and frequency regulation...
Voltage problem is always a critical issue in operating a distribution system. The uncertainties of load distribution and variation have introduced a great complexity to the task of maintaining system voltage within the permitted range. In this paper, small-scale generator, known as distributed generation (DG), is employed in the system and acting as a voltage regulator. The output of DG is controlled...
In this paper, a new parallel-connected single phase power factor correction (PFC) topology using flyback converter in parallel with forward converter is proposed to improve the input power factor with simultaneously output voltage regulation taking consideration of current harmonic norms. Paralleling of converter modules is a well-known technique that is often used in medium-power applications to...
This paper presents an approach to control the power flow and regulate the DC voltage at the DC link of voltage source converter (VSC) based high voltage DC (HVDC) transmission system. Two identical converters used at both rectifier and inverter ends. The switching of the converter is carried out at fundamental frequency switching. The power flow between the two stations is controlled by controlling...
A single-phase AC-to-DC converter using modified series-parallel resonant converter (MSPRC) in conjunction with active power filter (APF) is presented for improvement of power factor on input AC line. The pulsating DC voltage obtained from the single phase uncontrolled diode bridge rectifier is applied to high frequency full bridge configuration of the MSPRC. For high power factor operation small...
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