This paper is to present and to compare the DTC applied to an induction motor (IM) fed by two-level and three level inverters voltage. Direct torque control (DTC) of induction motors fed by a two level inverters has drawbacks like more torque, flux and current ripples in steady state. All these drawbacks can be overcome by DTC of induction motor fed by a three level inverters. Three level inver...

Abstract Firstly, the basic equivalent model of inverter parallel connection is briefly introduced, and then working principle sag control described. The has a certain effect on regulation reactive power active power, but when line impedance not equal, distribution among inverters cannot be reasonably dispatched distributed. robustness system verified.

ABSTRACT- In this paper, the design and simulation of an On-grid photovoltaic system for faculty Engineering, Abuja campus, University Port Harcourt (Latitude: 4.78°S, Longitude: 7.01°E) was researched in-order to verify alternate power source possibility that can supplement inconsistent from (Power holding company Nigeria) grid faculty. The Solar modules are mounted in a fixed tilt orientation...

Multilevel inverters produce a staircase output voltage from DC voltage sources. Requiring great number of semiconductor switches is main disadvantage of multilevel inverters. The multilevel inverters can be divided in two groups: symmetric and asymmetric converters. The asymmetric multilevel inverters provide a large number of output steps without increasing the number of DC voltage sources an...

The interconnection of distributed energy resources (DERs) in microgrids (MGs) operating both islanded and grid-connected modes require coordinated control strategies. DERs are interfaced with voltage source inverters (VSIs) enabling interconnection. This paper proposes a load demand sharing scheme for the parallel operation VSIs an inverter-based microgrid (VSI-MG). ride-through capability hea...