Research on MPC Fault-Tolerant Control of Five-Level Inverter

In order to ensure the reliable work of UPS equipment with long-term and stable work requirements. Among the many control methods of multi-level inverters, this paper chooses Model Predictive Control (MPC) method to study. MPC method has unique rolling optimization ability and high dynamic response ability, which can ensure that the inverter is in a high-quality working state for a long time. When the fault of the switch tube is detected, the fast fault-tolerant control is carried out by changing the reference current and switching the voltage vector participating in the rolling optimization, so as to ensure that the output current of such equipment is not distorted and maintain the safe operation of the equipment and its load.