This paper presents the development of a control scheme for a multilevel diode-clamped converter connected in a series–parallel fashion to the electrical system such that it can compensate for deviations in utility voltage (sag, surge, and unbalance) and act as a harmonic and/or reactive current source for a load. New carrier-based multilevel pulsewidth modulation techniques are identified to m...

Up to now, the electromechanical synchronous machine rules the domain of electrical power generation devices and that way the public power grids. Its specific characteristics guarantee the stable highly parallel grid operation, automatic power balancing and damping. Not least the rotating mass is related to some dynamic properties and the condition for the grid short time frequency stability. T...

This paper presented a novel approach to the multipulse voltage converters (VC), especially voltage source inverters (VSI) and matric converters (MC) based on several typical identical modules connected in parallel using Inductive Current Splitters/Mergers. Such arrangements resulting in lower voltage distortions at extremely low switching frequency. Proposed new arrangements was validated by s...

In this paper, a global study in terms of control architecture and power management is applied to parallel inverters topology. High bandwidth controllers and low voltage THD are achieved. The losses through the structure are modeled by equivalent voltage sources which implicitly represent all the losses types in the system. An accurate online estimation method allows determining these losses pa...

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 this article, a distributed control scheme to compensate for voltage harmonics in islanded microgrids is presented, where each generation (DG) source has primary level and secondary level. addition the current loops, of DGs includes virtual impedance loops main harmonic components, which are responsible dividing power component non-main (harmonic) between microgrid, respectively. For coordin...

Harmonics measurement of an industrial unit is done to asset the power quality aspects in a typical factory. Then with using a lumped steady state and thermal model we analyzed the influences of different harmonics on motor temperature rise. The real issues are the harmonics generated by the inverters which affects the induction machine performance. Several inverters like Voltage Series Inverte...