an active damper for stabilizing power-electronics

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AN ACTIVE DAMPER FOR STABILIZING POWERELECTRONICS-BASED AC SYSTEMS
ABSTRACT:
The interactions among the parallel grid-connected converters coupled
through the grid impedance tend to result instability and power quality problems.
To address them, this project proposes an active damper based on a high
bandwidth power electronics converter. The general idea behind this proposal is to
dynamically reshape the grid impedance proļ¬le seen from the point of common
coupling of the converters, such that the potential oscillations and resonance
propagation in the parallel grid-connected converters can be mitigated.
BLOCK DIAGRAM:
HARDWARE DIAGRAM:
AC supply
Active rectifier 1
Common coupling
Active rectifier 2
Output
Output
Driver
circuit
12 v dc
supply
Pulse
generating
unit
5 v dc
supply
TOOLS:
1. Orcad/pspice.
2. PIC controller.
3.Matlab/simulation