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Droop control is a widely used technique for load sharing in DC microgrids (MGs). However, it has its limitations due to the MG voltage deviating from its rated level and, more importantly, it suffers from possible poor current sharing accuracy. Voltage drops across coupling line impedances is the main factor that causes these limitations, which is further deteriorated by the virtual impedance introduced...
In Queensland, Australia, the statutory regulation for an electricity distribution network is to deliver a voltage within ± 6% to customers from the nominal value of 240 V. Typically, voltage control is determined using the system load as the main driver. This approach gives preference to customers that use more energy. This paper presents a customer-weighted method to control the voltage regulation...
This paper presents a control system based on a repetitive controller to compensate key power-quality disturbances, namely voltage sags, harmonic voltages and voltage imbalances, using a dynamic voltage restorer (DVR). The control scheme deals with all three disturbances simultaneously within a specified bandwidth. The control structure contains a feed-forward term to improve the transient response...
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