Supertwisted Synergetic Control for DC-DC Power Converter of G2V- V2X Capable Onboard Electric Vehicle Charger

A bidirectional interaction between an electric vehicle (EV) and the power grid demands fast and robust control of the bidirectional EV chargers. We propose a supertwisted synergetic (ST-syn) based hybrid nonlinear controller for a DC-DC bidirectional power converter-based EV charger with V2X capability. For both G2V and V2X scenarios, we validate the performance of the proposed controller by numerical simulations and compare it with state-of-the-art backstepping, integral backstepping, sliding mode, and supertwisting sliding mode controllers. As compared to the supertwisting sliding mode controller, the best of the compared state-of-the-art controllers, our proposed controller shows an improvement in the dynamic response of the system with a reduction of rise time to 5.94%, steady state error to 37.5%, and settling time to 0.45 %. These results show the superiority of the proposed ST-syn controller as the most viable choice for fast, robust, and chattering-free control of the DC-DC bidirectional power converter for the G2V-V2X-enabled EV charger.