This paper describes a method for time-domain electromagnetic transients modeling of Voltage Source Converter ( VSC ) bridges in a real time digital simulator using a short time-step ( < 2 μsec ). The method supports the modeling of many valves in one lumped connected network. The model of the VSC bridge is interfaced into the time-domain simulation of a main network that uses a larger time-step ( ~ 50 μsec ).
The representation of each valve in the EMT type program is provided by a fixed conductance in parallel with a current source. The calculation of the parallel current source is modified to facilitate the representation of the ON and OFF states of the valve.
T. Maguire, J. Giesbrecht, In Proc. IPST 2005, Montreal Canada, June 2005, Paper No. IPST05-168-25c
KEYWORDS: Voltage Source Converter, VSC, electromagnetic transient simulation, real time simulation