A NEW TOPOLOGY OF THREE PHASE BUCK-BOOST INVERTER WITH BUFFER INDUCTOR

The electric vehicle inverter requires an induction motor drive with a high output of voltage and curr ent to reduce the number of batteries used and in turn to reduce the vehicle’s weight. In this paper, a new topology of a three-phase buck-boost inverter (TPBB I) with a buffer inductor (BI) is proposed. The performance of the proposed inverter topology was t ested using a power simulator program. The inverter was designed with a proper component of inductors a nd capacitors. For a given load resistor, it was sh own that the inverter can produce a sinusoidal output v oltage and current with an amplification of more th an three times. A simulation was also carried out in a case of an inverter loaded to three-phase inductio n m tor with a specific torque and moment of inertia. It wa s demonstrated that the inverter still can produce the sinusoidal output voltage and current and can reduc the applied torque and thus a stable condition of the inverter can be maintained. The proposed inverter is suitable to be implemented for the electric vehicle. Key-words: Three Phase Buck-Boost Inverter (Tpbbi), Buffer Inductor (Bi), Topology, Spwm, Electric Vehicle.