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The unified power quality conditioner (UPQC) is a combination of back to back connected shunt and series active power filters (APFs) to a common DC link voltage, which compensates voltage and current based distortions, independently. Generally the power conditioning devices are designed for complete compensation, irrespective of the requirement/priority. In this paper flexibility of selective compensation...
This paper presents a new sliding mode current control (SMCC) of three-phase grid-connected voltage source converters (VSCs). The proposed SMCC strategy employs a nonlinear sliding mode control scheme to directly calculate the required converter control voltage so as to eliminate the line current errors in the stationary reference frame without involving any synchronous coordinate transformation....
This paper analyzes a sequence network diagram of a converter fed islanded microgrid with single phase and three phase loads. The analysis shows that the converter needs to inject negative sequence current into the microgrid to keep its voltage balanced. This result is used to synthesize a control scheme that allows a single VSC with standard inductor interface and dq frame current control to operate...
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