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A hierarchical energy management system (EMS) for a residential power router is proposed to further reduce costs and stabilize the voltage of a load. There are ten modes of the EMS including three grid-connected modes and seven islanding modes. The state machine diagram shows the transition into and out of these modes. These transitions are based on switching criteria, over generation conditions,...
Considering multiple operation condition in DC microgrid, a bus voltage control strategy with terminal coordination is proposed in this paper, which could stabilize the bus voltage in extreme operation condition through receiving the operation information and issuing commands to every terminal. The equivalent circuit of DC microgrid is established and analysed, which can provide instruction on voltage...
In order to test the performance of grid-connected inverters, a testing platform is proposed in this paper. Back to back PWM converter is the topology of this platform. The rectifier side is a three-phase rectifier, and the inverter side is composed with three single-phase H-bridge inverters. This testing platform can simulate various power quality conditions such as voltage sags, voltage harmonics...
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