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Novel switched capacitor-filter compensator for smart grid-electric vehicle charging scheme

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2 Author(s)
Sharaf, A.M. ; Sharaf Energy Syst. Inc., Fredericton, NB, Canada ; Khaki, B.

A novel FACTS-based hybrid switched capacitor-filter compensator developed by the First Author is validated for smart grid-electric vehicle battery mobile/onboard charging schemes. The proposed scheme includes a low cost switched hybrid AC-DC filter connected between AC and DC sides of the rectifier in the DC common bus, and it is controlled by a novel tri-loop dynamic error-driven Weighted - Modified PID controller. A buck-boost DC/DC chopper is utilized on the DC side of the rectifier to achieve the best charging mode for fast impact and minimal inrush battery charging conditions. The buck-boost chopper is regulated using a hybrid Voltage-Current-Power weighted tri-loop dynamic error-driven controller. A pulse width modulated switching scheme is utilized by both the FACTS device and DC-DC buck-boost chopper in order to turn on/off IGBT/MOSFET switches. Using the proposed Modified grid scheme, better dynamic performance with minimum inrush currents and voltage excursions can be achieved. Enhanced DC bus stabilization and improved power factor and power quality are achieved using the modified grid scheme, compared with a basic battery charging scheme without the novel FACTS Device. The effectiveness of the scheme is validated using MATLAB/Simulink/Sim-Power Toolbox.

Published in:

Smart Grid Engineering (SGE), 2012 IEEE International Conference on

Date of Conference:

27-29 Aug. 2012