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This paper proposes a control strategy for plug-in electric vehicle (PEV) fast charging station (FCS) equipped with a flywheel energy storage system (FESS). The main role of the FESS is not to compromise the predefined charging profile of the PEV battery during the provision of a hysteresis-type active power ancillary service to the overhead power system. In that sense, when the active power is not...
Electrical vehicle (EV) chargers are going to occupy a considerable portion of total energy consumption in the future smart grid. Fast charging stations (FCS), as the most demanding representatives of charging infrastructure, will be requested to provide some ancillary services to the power system in order to support basic electrical operation. This paper proposes a local implementation of a hysteresis-based...
This paper applies a hierarchical control for a fast charging station (FCS) composed of paralleled PWM rectifier and dedicated paralleled multiple flywheel energy storage systems (FESSs), in order to mitigate peak power shock on grid caused by sudden connection of electrical vehicle (EV) chargers. Distributed DC-bus signaling (DBS) and method resistive virtual impedance are employed in the power coordination...
Electrical vehicles (EVs) are presenting increasingly potential to replace the conventional fossil fuel based vehicles due to environmental friendly characteristic. Accordingly, Charging Stations (CS), as an intermediate between grid and large numbers of EVs, are supposed to have more critical influence on future smart transportation network. This paper explores an off-board charging station upgraded...
Fast charging stations (FCS) will become an essential part of future transportation systems with an increasing number of electrical vehicles. However, since these FCS plugs have power ratings of up to 100 kW, serious stress caused by large number of FCS could threaten the stability of the main power grid. To overcome the possible adverse impacts, this paper applies a dedicated paralleled flywheels...
A micro flywheel energy storage system was designed in which the flywheel battery saves and releases energy when necessary. Controlling system and four operating modes of solar power system containing flywheel battery were given and operating process of this system was simulated. The results show that: the flywheel battery resolves the problem of incapability of solar power supply at night and delays...
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