This paper proposes two control strategies for the bidirectional Z-source inverters (BZSI) supplied by batteries for electric vehicle applications. The ﬁrst control strategy utilizes the indirect ﬁeld-oriented control (IFOC) method to control the induction motor speed. The proposed speed control strategy is able to control the motor speed from zero to the rated speed with the rated load torque in both motoring and regenerative braking modes. The IFOC is based on PWM voltage modulation with voltage decoupling compensation to insert the shoot-through state into the switching signals using the simple boost shoot-through control method. The parameters of the four PI controllers in the IFOC technique are designed based on the required dynamic speciﬁcations. The second control strategy uses a proportional plus resonance (PR) controller in the synchronous reference frame to control the AC current for connecting the BZSI to the grid during the battery charging/discharging mode. In both control strategies, a dual loop controller is proposed to control the capacitor voltage of the BZSI. This controller is designed based on a small signal model of the BZSI using a bode diagram. MATLAB simulations and experimental results verify the validity of the proposed control strategies during motoring, regenerative braking and grid connection operations.
Control of a Bidirectional Z-Source Inverter forElectric Vehicle Applications in Different Operation ModesJournal of Power Electronics (JPE), (2011)
Publication DateMarch, 2011
Citation InformationOmar Ellabban, Joeri Van Mierlo and Philippe Lataire “Control of a Bidirectional Z-Source Inverter for Electric Vehicle Applications in Different Operation Modes”, Journal of Power Electronics (JPE), Vol. 11, No. 2, pp.120-131, March 2011.