Power generating entities’ connection to utility grids requires power converters achieve high efficiency and low injected current harmonic distortion. The control of the converter plays a crucial role in grid-tied converter’s performance. Various techniques for inverters ranging from classical intelligent are introduced several exist. Evaluating state trend related methods, research shows that ...

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 ...

Renewable energy resources (RES) are being increasingly connected in distribution systems by utilizing power electronic converters. However, the extensive use of power electronics has resulted in a rise in power quality (PQ) concerns faced by the utility. A novel control strategy implementing reference compensation current was proposed in this paper. So that these grid-connected inverters can a...

This paper presents a hysteresis band control for achieving maximum benefits from these gridinterfacing inverters when installed in 3-phase 4-wire distribution systems. The inverter is controlled to perform as a multi-function device by incorporating active power filter functionality. The inverter can thus be utilized as: 1) power converter to inject power generated from RES to the grid, and 2)...

Background: Paraquat (PQ), an herbicide, is a very poisonous compound for both humans and animals. This study was conducted to examine the protective effect of the Coenzyme Q10 (CoQ10) in newborn rats from pregnant rats pre-treated with PQ. Methods: The experiments were conducted on 25 rats, divided in five groups randomly and equally: 1 - Control Group received normal saline (0.1ml/day); 2...

Power quality (PQ) problems for renewable energy system (RES) is major challenge using these systems. Amplitude, frequency, and waveform important PQ parameters especially standalone or isolated In this paper we propose RES with wind turbine (WT) permanent magnet synchronous generator (PMSG) to feed different loads (liner, non-liner) through AC-DC-AC converter. The PMSG operate fuzzy logic iner...

edaravone, an antioxidant and radical scavenger, showed protective effects against oxidative stress-like condition. paraquat (pq) is a toxic herbicide considerable evidence suggests that oxidative stress and mitochondrial dysfunction contribute to pq toxicity. in this study, protective effect of edaravone against pq induced toxicity and reactive oxygen species (ros) generation in a549 cells and...

Abstract This paper presents the shunt compensation performance of quasi-Z-source inverter (QZSI) and back to connected QZSIs (BB-QZSI) address power quality (PQ) issues in three-phase three-wire utility network (PUN). Generally, these PQ are poor voltage regulation, low factor (PF), source current distortion, unbalanced voltage, etc. The proposed BBQZSI-based distribution static compensator (D...

This paper presents a combined control and modulation technique to enhance the power quality (PQ) reliability (PR) of hybrid energy system (HES) through single-phase 11-level cascaded H-bridge inverter (11-CHBI). The controller specifically regulate HES meet load demand. To track optimum power, Modified Perturb Observe (MP&O) is used for HES. Ultra-capacitor (UCAP) based storage device novel cu...

This paper presents an elementary proof of the HannenhalliPevzner theorem on the reversal distance of two signed permutations. It uses a single PQ-tree to encode the various features of a permutation. The parameters called hurdles and fortress are replaced by a single one, whose value is computed by a simple and efficient algorithm.