Power quality compensation system, a power electronic controller and control method of the same

A power quality compensation method, comprising:

• receiving, by a controller of a power quality compensation system, signals from one or more sensors configured to detect voltage and current from an input side and an output side of the power quality compensation system,
• calculating reference signals, and
• using model predictive control to track the reference signals,
• wherein the power quality compensation system includes
• power electronic converter,
• a controller configured to control the power electronic converter, and
• a plurality of inductors connected to the power electronic converter, and
• wherein the controller is configured to adjust switching frequency to reduce switching loss based on a threshold performance fidelity,
• wherein as the performance fidelity rises above the threshold performance fidelity the controller is configured to adjust the switching frequency to a second switching frequency based on a cost function of the model predictive control which second switching frequency is a suboptimal switching frequency, and
• wherein the threshold performance fidelity is user-specified.