Hall-Effect Based Semi-Fast AC On-Board Charging Equipment for Electric Vehicles

• Main Authors: Eva González-Romera, Enrique Romero-Cadaval, Javier Gallardo-Lozano, María Isabel Milanés-Montero
• Format: Article
• Language: English
• Published: MDPI AG 2011-09-01
• Series: Sensors
• Subjects: V2G; G2V; electric vehicle; plug-in hybrid electric vehicle; battery charging equipment; power quality; perfect harmonic cancellation strategy
• Online Access: http://www.mdpi.com/1424-8220/11/10/9313/

The expected increase in the penetration of electric vehicles (EV) and plug-in hybrid electric vehicles (PHEV) will produce unbalanced conditions, reactive power consumption and current harmonics drawn by the battery charging equipment, causing a great impact on the power quality of the future smart grid. A single-phase semi-fast electric vehicle battery charger is proposed in this paper. This ac on-board charging equipment can operate in grid-to-vehicle (G2V) mode, and also in vehicle-to-grid (V2G) mode, transferring the battery energy to the grid when the vehicle is parked. The charger is controlled with a Perfect Harmonic Cancellation (PHC) strategy, contributing to improve the grid power quality, since the current demanded or injected has no harmonic content and a high power factor. Hall-effect current and voltage transducers have been used in the sensor stage to carry out this control strategy. Experimental results with a laboratory prototype are presented.