ABSTRACT
The generation of a symmetrical three-phase system assumes displacement of the tip of the voltage vector on a circular trajectory. Constraints of variable frequency and magnitude for AC motor-drive applications have limited the efforts for new power converters used for simplified three phase AC sources. Accordingly, one approach to cost reduction would rely on seeking new topologies with a reduced number of components. Given the cost and size of the passive filter components on the intermediary DC bus, solutions for direct conversion have been sought. A new inverter topology with reduced count of components is built with two legs of the conventional inverter while the third phase is collected from the mid-point of the DC capacitor bank. The efficiency and cost are driving automotive applications and this supported the appearance of a new inverter topology able to minimize the component count.
