A Constant DC Capacitor Voltage Control Method of the Non-Active Current Compensator Under Non-Sinusoidal and Unbalanced Conditions Using the Correlation Function

Abstract

This paper discusses the constant DC capacitor voltage control method of the non-active current compensator using the correlation function. The linearized model of the constant do capacitor voltage control block is derived, and then the relationship between the capacitance of the do capacitor and power flows into the non-active current compensator. It is shown that the capacitance can be decided considering only the power flow caused by the unbalanced situation. Digital computer simulation is implemented to verify the validity of the linearized model. The prototype experimental model is constructed and tested. Experimental results demonstrate that the linearized model is useful to design the do capacitor and PI controller.