Title:
Capacitor-Supported Dynamic Voltage Restorer and Regulator – Smart Grids Friendly
Date:
Friday, November 9, 2012 from 10:30am
Location:
E3-262 EITC Building, University of Manitoba Fort Garry Campus
Speaker:
Dr. Carl Ho, ABB Switzerland
Abstract:
It is well known that Power Quality (PQ) issues, such as voltage dips, swells, voltage unbalance and voltage harmonics, harm grid-connected electrical loads. The issues lead to interrupt production lines or medical instruments, or to make defects on semiconductor wafers, or to shut down the servers in data centres. Furthermore, it can be imagined that the PQ issues will be even worse in the future “Smart Grids” due to more unstable and unpredictable energy sources connecting to the grids. Typically, series-connected voltage compensator (SVC) is one of the options to mitigate the issues, however, an external dc voltage source is required in the conventional SVC to provide the missing voltage and its control dynamic response is limited. Thus, an advanced dynamic voltage regulating and restoring system has been proposed. The main characteristics of the system are, 1) Capacitor supported, it is a grid connected system but no external dc power source to sustain the load voltage caused by any PQ issues, 2) Fast dynamic response, it forces the load voltage returning to nominal voltage within 2 switching cycles, 3) Voltage harmonic elimination, high THD of load voltage can be guaranteed, even the grid voltage is close to a square wave. The presentation will give the topology and control theories of the system. Moreover, system analysis and experimental results with single-phase and three-phase grids will be discussed.
Cost:
This will be a free event.
Contact:
For questions or more information: Jun Cai 474-6419
