Electric vehicle operation modes with reactive power support using SMC in distribution generation
Journal of Energy Systems ; doi:10.30521/jes.731845
Abstract: A single phase 120V, 60Hz on board Electric Vehicle (EV) charging circuit configuration is considered with SMC for V2G discharging and G2V charging modes of operation. An on-board battery charger of rating 20 kWH which can be charged at home is presented. Bidirectional AC/DC and DC/DC converters are used for real power flow control. A nonlinear control technique Sliding Mode Controller (SMC) is used due to its robustness and good tracking capabilities. It is observed that 2nd order dc output voltage reduced by 57%, grid current THD is 3.289%, settling time is 0.1s and convergence are comparatively less than with a PR and PI controllers. The tracking of grid current is effective with very less steady state error of 1.52%. Both the modes of operation are obtained with a single stage conversion. During transitions, support to grid with reactive power by EV is simulated and understood. As an application, a solar based charging circuit is also presented for EV charging. The battery SOC (state of charge) depicts changeover state from normal charging to solar charging reaching 100% within short period. The results obtained are presented in PSCAD v4.6 software simulator.
Keywords: reactive power / solar / battery / Electric / Modes of Operation / Charging Circuit
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