Abstract
This paper presents a methodology to connect distributed energy resources via an 84-pulse voltage source converter to three-phase system grid or load of standard or nonstandard voltage values. Transfer function blocks are included to illustrate interfacing among converters. The main input-output values to be considered in the application are detailed and the system can be modified to be included in other systems without loss of generality. The definition of the reactive component for supporting grid or load variations without degrading the overall performance is carried by for the DC-DC converter. A control variable for reducing the DC gain is used to improve the settling time. Our proposal defines the capacitive and inductive component values for an operating point and gives the option to reduce them when adding smoothed variations and adaptive controllers.
Highlights
Voltage source converters (VSC) have been used for many years to adapt DC voltage to three-phase AC voltage load or interfacing to grid for improving power quality by reducing the conducted low-frequency phenomena described in [1].ey are encouraged to follow the attributes of the steadystate phenomena listed in [2]
Topologies used for VSC vary from multilevel, pulse width modulation (PWM), and multipulse, and each one has some advantages over the others depending on the application
DC-link capacitor or battery energy storage systems (BESS) are needed for an optimal operation of the system based on VSC [6, 7]
Summary
Voltage source converters (VSC) have been used for many years to adapt DC voltage to three-phase AC voltage load or interfacing to grid for improving power quality by reducing the conducted low-frequency phenomena described in [1]. Is paper defines a methodology for connecting an 84-pulse VSC to the grid or load specifying the needed DC voltage for it As this voltage can be obtained from different sources, we are using the grid with standard or nonstandard values to build the AC-DC converter. En, the phase voltage system is described by va Vm sin(ωt), 2π vb When this system is feeding a three-phase full wave rectifier for obtaining a DC signal, the average value Vmean and the root mean square VRMS can be calculated by. Phase shift among v3φ and v0·03φ Per phase output voltage total harmonic distortion
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