This paper presents a self-tuning filter (STF)-based adaptive linear neuron (ADALINE) reference current generation algorithm to enhance the operation of a three-phase three-level neutral-point diode clamped (NPC) inverter-based shunt active power filter (SAPF) under non-ideal (unbalanced and/or distorted) source voltage conditions. SAPF is an effective and versatile mitigation tool for current ...

In this paper, a refined reference current generation algorithm based on instantaneous power (pq) theory is proposed, for operation of an indirect current controlled (ICC) three-level neutral-point diode clamped (NPC) inverter-based shunt active power filter (SAPF) under non-sinusoidal source voltage conditions. SAPF is recognized as one of the most effective solutions to current harmonics due ...

In this paper, modeling and simulation of a three-phase inverter (DC-to-AC converter) is studied by means of graphical tools, SaberSketch and Advanced Continuous Simulation Language / Graphic Modeller (ACSL/GM). First, SaberSketch simulation of the inverter with ideal switches is presented. Then, the simulation is repeated by replacing the ideal switches with built-in BJT (Bipolar Junction Tran...

Multilevel inverters (MLIs) have seen significant growth in a variety of medium- to high-power industrial applications and become mature viable solution for renewable energy systems over the past decade. The major concerns MLIs are high component count buck-type feature ac output voltage when used grid-connected renewable-energy-based sources such as solar photovoltaic (PV) panels. As another o...

In this paper, we propose a sensorless backstepping control of induction motor (IM) associated with three levels neutral clamped (NPC) inverter. First, the backstepping approach is designed to steer the flux and speed variables to theirs references and to compensate the uncertainties. A Lyapunov theory is used and it demonstrates that the dynamic trajectories tracking are asymptotically stable....

This paper proposes a single-phase seven-level inverter for grid-connected photovoltaic systems, with a novel pulse width-modulated (PWM) control scheme. Three reference signals that are identical to each other with an offset value that is equivalent to the amplitude of the triangular carrier signal were used to generate the PWM signals. The inverter is capable of producing seven levels of outp...

Direct torque control (DTC) is an advanced control technique, in which the torque produced by the motor is directly controlled by controlling the inverter switching states. Each switching state represents a voltage vector. DTC have the following features, it does not requires current controllers, elimination of rotor position sensors, fast torque response, lesser parameter dependence, and it do...

In this article, switching strategies for dc-link current and voltage ripple reduction have been studied. The considered topology is a neutral-point clamped three-level (NPC-3L) inverter feeding dual three-phase permanent-magnet synchronous motor (PMSM). mechanisms of generation in an NPC-3L inverter-fed PMSM drive are analyzed detail. Then, two-step collaborative strategy proposed, where the o...