Applications of real-time simulation techniques for shunt active power filter design

Model-based simulations by commercial simulation packages, such as EMTP/ATP, PSCAD/EMTDC and MATLAB/SIMULINK often provide convenience for testing and analyzing the power quality studies. Nowadays, the real-time simulation techniques are highly developed to enhance the capabilities of traditional off-line simulations. This paper presents the real-time simulation techniques for a shunt active passive filter design. A three-phase four-wire shunt active passive filter operated under non-sinusoidal source voltages which supply unbalanced linear and nonlinear loads is tested with a PC cluster-based real-time simulator. Traditional off-line simulation with variable-step solver is also included for comparison of solutions. Results indicate that satisfactory solutions are obtained with using real-time simulation techniques for the active passive filter design.