| Abstract |
A 27-to-3-phase thyristor matrix converter using a model predictive control (MPC) is considered. Comparedto the standard method theMPC considers the coupled overall system. Due to this, all 27^3 =19683switching states are to be considered. The result of the MPC strategy is, compared to classical control, adrastic reduction of the commutation frequency and respectively the converter losses. However, besidesthe advantages there are still some problems with the use ofMPC for thyristor matrix converter. Thereforthis contribution presents extensions of the standard direct model predictive control strategy to overcomethese problems. The result is a predictive control structure with a fallback level for problematic workingareas. By this, a low total harmonic distortion (THD) as well as a high efficiency can be achieved. |
