Abstract
As a contribution for sustainability, electric vehicles (EVs) are seen as one of the most effective influences in the transport sector. This paper proposes an improved voltage control of the EV operating as uninterruptible power supply (UPS) in smart homes. With the EV plugged-in into the smart home
Highlights
The intensification in the use of electric vehicles (EVs) leads to new and unpredictable challenges for the electrical power grid controlling regarding the energy needed, when the EVs are parked for implementing the battery charging [1][2][3]
Since the EV is plugged-in at the smart home, in case of power outages, it can provide uninterrupted power for the electrical appliances according to the battery state-of-charge, the user preferences and the electrical appliances
The results were obtained with values of voltage and power that are inferior to the nominal values, it does not invalidate the experimental verification of the proposed mode
Summary
The intensification in the use of electric vehicles (EVs) leads to new and unpredictable challenges for the electrical power grid controlling regarding the energy needed, when the EVs are parked for implementing the battery charging [1][2][3]. Based on the recognition of this adversity, this article points out as essential contributions: (i) a more adequate control of the voltage produced by the EV, minimizing inherent power quality problems, regardless of the structure of the electrical appliances; (ii) a faster transition between the grid and the EV interaction (charging mode, G2V) and EV-home interaction (mode where EV is the only power source for home, V2H); (iii) an experimental corroboration of the proposed voltage control, using a laboratory prototype of an EV bidirectional system. Even during the time of the G2V process, if a grid failure is identified by the proposed system with multiple control strategies, the house is isolated from the grid and the EV starts to operate as the source of power for the home This situation is demonstrated, in which, as it can be verified, the main circuit breaker makes the house independent of the grid and the EV starts supplying power to the electrical appliances.
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