Modulated Model Predictive Control for Multilevel Cascaded H-Bridge Converter-Based Static Synchronous Compensator

The model predictive control (MPC) methods have been widely applied due to the fast dynamic performance and multiple targets. However, they show certain limits when multilevel converters, such as unfixed switching frequency, large computation burden, complex weighting factors selection. This article proposes a novel modulated MPC (M 2 PC) method for cascaded H-bridge (CHB) converter-based static synchronous compensator (STATCOM). Instead of multitarget integration factor design, proposed disintegrates voltage balancing process from cost function. evaluated sets output current is decided by search step range in each period. By proper design selection adaptive references under ?–? coordinate, can be reduced, which greatly reduces number Therefore, characteristics low burden are guaranteed simultaneously. In addition, with simple independent capacitor control, easily CHB STATCOM application. Furthermore, this provides delay compensation prediction process, it fixed frequency cell. Simulation experimental results verify effectiveness M PC method.