دانلود رایگان مقاله انگلیسی, متعادل سازی بار با شارژ خودروهای برقی و اینورترهای PV در شبکه های توزیع نامتعادل

Load Balancing With EV Chargers and PV Inverters in Unbalanced Distribution Grids

سال انتشار : 2015

نوع مقاله : IEEE JOURNALS & MAGAZINES

تعداد صفحات : 9

Abstract—Balanced three-phase four-wire distribution grids

can host significantly more distributed generation and electric

vehicles. Three-phase photovoltaic (PV) inverters and electric

vehicle (EV) chargers can be adapted to transfer power from

highly loaded to less loaded phases, without overloading the

inverter or charger. Grid conditions will be improved due to a

more balanced operation of the network and more PV panels and

EVs can be connected before the limits of the network are reached.

A classic coordinated charging strategy for EVs is adapted in this

paper. It is shown that the charging of EVs can be improved when

power can be transferred from one phase to another. Using PV

inverters with a balancing inverter, the power injected in each

phase will become a controllable variable as the total amount of

produced power does not necessarily need to be equally divided

across the three phases. The improvements made by using EV

chargers and PV inverters that can balance the network are investigated.

Several load flow simulations with realistic data show a

positive effect on the system losses, the grid voltage, and voltage

unbalance. Finally, a local controller is proposed to control the

balancing between the phases when a real-time communication

channel is not available.

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