A 3-phase 4-leg 4-wire voltage sag compensator based on three dimensional space vector modulation in abc coordinates
MetadataShow full item record
This paper presents a 3-phase 4-leg 4-wire voltage sag compensator based on three dimensional space vector modulation in abc coordinates which can handle a neutral current under voltage sag and nonlinear load conditions. The topology of this hardware consists of a voltage sag detector, a DC/DC converter, a solid state transfer switch, and a 4-leg inverter. The space vector modulation algorithm using abc coordinates is much simpler and more intuitive than in αβγ representation, reducing the complexity of the modulation algorithm and the computational load associated with it. The main advantages of 4-leg inverter topology and the algorithm lie in providing an extended range for the zero sequence voltages and currents. A 3 kVA prototype was implemented on a dsPIC microcontroller to verify its capabilities.
Showing items related by title, author, creator and subject.
A new unequal DC link voltage configuration for a single phase multilevel converter to reduce low order harmonicsGhasemi, N.; zare, F.; Langton, C.; Ghosh, Arindam (2011)Multilevel converters are used in high power and high voltage applications due to their attractive benefits in generating high quality output voltage. Increasing the number of voltage levels can lead to a reduction in ...
A hybrid cascade converter topology with series-connected symmetrical and asymmetrical diode-clamped H-bridge cellsNami, A.; zare, F.; Ghosh, Arindam; Blaabjerg, F. (2011)A novel H-bridge multilevel pulsewidth modulation converter topology based on a series connection of a high-voltage diode-clamped inverter and a low-voltage conventional inverter is proposed in this paper. A dc link voltage ...
Iyer, Narayanaswamy P.R. (2012)Matrix converters (MCs) are essentially forced commutated cycloconverters with inherent four quadrant operation consisting of a matrix of bidirectional switches such that there is a switch for each possible connection ...