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Advisor(s)
Abstract(s)
This paper presents experimental results of electric vehicle (EV) operation as an off-line uninterruptible power supply (UPS). Besides the traditional grid-to-vehicle and vehicle-to-grid modes, this paper presents an improved vehicle-to-home operation mode. This new operation mode consists of the detection of a power outage in the power grid and the change of the EV battery charger control to operate as an off-line UPS. When the power grid voltage is restored, the voltage produced by the on-board EV battery charger is slowly synchronized with the power grid voltage before a complete transition to the normal mode. This paper presents results of two algorithms to detect a power outage: the root mean square (rms) calculation method based on half-cycle of the power grid voltage, and the rms estimation based on a Kalman filter. The experimental results were obtained in steady and transient state considering two cases with the EV plugged in at home:when charging the batteries and without charging the batteries. This paper describes the EV battery charger, the power outage detection methods, and the voltage and current control strategies.
Description
Keywords
Electric vehicle Kalman filter Improved vehicle-to-home (iV2H) Off-line uninterruptible power supply (UPS)
Citation
MONTEIRO, Vítor [et al] - Improved vehicle-to-home (iV2H) operation mode: experimental analysis of the electric vehicle as off-line UPS. IEEE Ttransactions on Smart Grid. ISSN 1949-3053. Vol. 8 N.º 6 (2017), pp. 2702-2711
Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC