The HEV electric motor is typically powered by a battery\npack through power electronics. The HEV battery is\nrecharged either by the engine or from regenerative braking.\nThe electric drive mode is very limited for an HEV due to\nthe limited battery power. A more powerful battery will\nincrease the electric drive range of the vehicle, thus\nimproving fuel economy. However, there will be a need to\nrecharge the battery using an electric outlet since the\nregenerative braking and limited engine usage will not be\nsufficient to fully recharge the larger battery pack. In this\npaper, fuzzy logic energy management strategy for a Plug-in\nHybrid Electric Vehicle (PHEV) is presented. Since large\namount of electric energy is stored in the battery from the\nelectric power grid, the fuel consumption is reduced\nsignificantly as compared with HEV counterpart. The\nproposed energy management strategy is implemented on a\nPHEV model in ADVISOR and the model is then simulated\nfor several number of drive cycles. The proposed PHEV\nalgorithm results are compared with the determinacy rulebased\nenergy management strategy for HEV with similar\nbattery capacity as PHEV.
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