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This paper presents a Linear Quadratic Regulator with Integral action (LQIR) applied to the three-phase three-switch three-level boost-type Vienna rectifier. The design of the controller is based on the small-signal model of the converter, which is developed in the dq0 rotating reference frame using the state-space averaging technique along with the linearization process. This controller is designed...
This paper presents a three-phase electric drive with a modified electronic smoothing inductor (MESI) having reduced size of passive components. The classical electronic smoothing inductor (ESI) is able to control a diode bridge output current and also reduce not only mains current harmonics but also output voltage ripple. ESI performs the function of an inductor that has controlled variable impedance...
Voltage-source multilevel inverters have become very attractive for power industries in power electronics applications during last years. The main purposes that have led to the development of the studies about multilevel inverters are the generation of output voltage signals with low harmonic distortion; the reduction of switching frequency. A serious constraint in a multilevel inverter is the capacitor...
This paper proposes a new circuit topology for a multilevel PWM rectifier. The proposed circuit combines a diode clamp type topology with a flying capacitor type topology. As a result, the proposed circuit uses only 12 switches, despite the use of a five-level three-phase PWM rectifier. Further, the proposed circuit can obtain good performance as same as to a conventional multilevel circuit. This...
Recently cascade multilevel converters have attracted the attention of researchers for medium voltage applications such as FACTs devices and motor drives. This topology consists of several H-bridge cells in series, which has the advantages of modular structure and reduced number of components. The main challenges in these applications are limitation of switching frequency of semiconductor devices,...
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