In this paper, a new type of ac/ac converter is proposed. The proposed converter is capable of direct ac/ac power conversion and, except for a few small snubber elements, it does not require the use of any input inductors or a dc-link capacitor. In contrast to the matrix converter, which requires bidirectional switches, the proposed converter consists of only unidirectional switches such as ins...

In PWM inverter-fed drives, a variation of Common mode voltage (CMV) causes unbalanced voltage operation in induction motor. Multilevel inverters reduce this problem, but the complexity of the power circuit increases with an increase in the number of inverter voltage levels. In this paper, a five-level inverter is compared with two, three and four levels and this five level structure is propose...

In today’s power industry, a compact and highly efficient converter is the main component for server applications. The objective of this paper to propose totem-pole factor correction (PFC) with DC-link voltage control strategies data center Gallium Nitride High Electron Mobility Transistors (GaN HEMTs) are also used increase density conversion efficiency without reverse recovery loss. With deri...

The emerging switched-capacitor-based multilevel inverters offer interesting merits such as self-balancing of capacitor voltages and boosting voltage gain. While the switched capacitors (SCs) in these topologies are charged parallel with dc source, severe current spikes issue is inevitable, rendering them impractical at high power. This article proposes a novel T-type inverter that mitigates by...

Abstract This paper investigates the dynamic interactions between large‐scale PV plants and nearby synchronous generators. To this end, a comprehensive model of plant, including arrays characteristic their voltage controller, DC/DC converter, DC‐link dynamic, DC/AC inverter controllers, output filter, is obtained. Then, eigenvalues plant are calculated, it revealed that has mode in sub‐synchron...

High performance applications are now days utilizing the brushless DC motor (BLDC) drives due to its ruggedness, compactness, high torque weight ratio, dynamic response etc. feature of square-wave current excitation waveforms in BLDC allows some major system simplifications for trapezoidal motors. The developed is constant ideal conditions this when back emf waveform type. Despite this, physica...

218 IMPLEMENTATION OF THIRD HARMONICS INJECTION BY MATRIX CONVERTER P. Prakash*, M. Sathishkumar** & G. Sathishkumar*** Department of Electrical and Electronics Engineering, Gnanamani College of Technology, Tamilnadu Abstract: Due to the merits of sinusoidal input currents and excellent conversion efficiency, buck-type active third-harmonic injection converters have received increasing attentio...

This study presents space vector-based quasi-two-level operation of a diode-clamped multilevel inverter which improves dc link utilisation and output voltage quality, and avoids the dc link capacitor voltage balancing problem experienced with standard multilevel operation. Beside a review of quasi-two-level operation and the capacitor voltage balancing method, the study presents a detailed disc...