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Due to different initial state of charge (SOC) of energy storage system, the SOC of cascaded storage module is unbalanced in microgrid. Many conventional methods realize SOC balance of cascaded storage module based on centralized communication. In this paper, a decentralized SOC balancing method is proposed without any communication. In this scheme, the modified P-f curves are changed by the local...
Due to different initial state of charge (SoC) of distribution energy storage system (DESS) and mismatched line impedance, the SoC of DESS is unbalanced in microgrid. The conventional P-f droop, used to obtain accuracy load sharing, cannot balance the SoC. To overcome the drawback, this paper proposes a unified SoC based droop control method with distributed communication lines. In this scheme, the...
Bidirectional power flow, reactive power compensation capability and high efficiency are essential for vehicle to grid (V2G) systems. In this paper, a single-phase/single-stage bidirectional AC/DC converter for V2G application is presented, which consists of a line frequency commutated unfolding bridge and an interleaved buck-boost stage. In addition to sinusoidal input current, bidirectional power...
Based on the EV possession, EV customer requirements, recharging-station scales, service levels, etc., this paper constructs a high-adaptive EV recharging station model, and then builds an impact model of recharging station control method to the grid load. Simulation denotes this model can well reflect the EV recharging demand, recharging station service ability, and operation process of a certain...
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