In this paper, an advance repetitive control method (RCM) for fuzzy current control based grid connected inverter with a frequency adaptive capability is proposed. The main objective of the proposed scheme is to reduce total harmonic distortion (THD) such that by changing the FIR filter according to varied grid frequency and keeps the resonant frequencies fitting the grid fundamental and harmon...

The effects of optical injection locking on the nonlinear distortions of directly modulated semiconductor distributed feedback (DFB) lasers are investigated experimentally. The second harmonic distortion (SHD) and third harmonic distortion (THD), as well as the third-order intermodulation distortion (IMD3), are measured as functions of modulation frequency for both the free-running and injectio...

The aim of this paper is to investigate the power factor correction (PFC) of Boost Converter under an average current-mode control. Boost converter topology is used to accomplish this active power-factor correction in many discontinues/ continuous modes. The boost converter is used usually it is easy to implement and works well. In this paper comparative evaluation of different techniques for h...

<p>This study presents the power quality issue mainly focus effect of total harmonic distortion (THD) on a grid-connected PV system. Firstly, system with single-phase single-stage has been developed to monitor output values voltage and current also its behaviours. Maximum point tracking (MPPT) was implemented since it is proven as first step for THD reduction because MPPT will extract max...

Thalidomide (Thd), a potent teratogen, was shown to have therapeutic potential in cancer, primarily in multiple myeloma (MM), yet its mechanism of action has not been elucidated. It was recently suggested that its teratogenicity is derived from interference in expression of genes regulated by GC-rich promoters by blocking the binding of SP1 transcription factor to its motif. We explored the val...

The prevalence of obesity is increasing among all Americans, including Native Hawaiians. Because obesity is a risk factor for major chronic diseases and shortens lifespan, it is important to develop and test interventions to prevent and reduce it. Traditional Hawaiian Diet (THD) programs, conducted over the last two decades, were examined in the context of national information on weight loss an...

Fuel cells have been considered as the primary energy source for the distributed power generation as they are highly efficient, modular and clean. The main drawback is that the dc voltage generated by a single fuel cell varies from 0.7V to 1V. Due to the low input voltage in fuel cells, a suitable power conditioner is required to interface to the utility grid or local loads. To meet this requir...

To engineer T(h) determinants (THd) to prime help for humoral or cytotoxic T cell responses, we modified ovalbumin [OVA(323-337)] and myoglobin [MYO(106-118)] eliciting T(h)1 and T(h)0 cytokine profiles respectively. Residues along the sequence of both THd were replaced with amino acids representative of different families. Replacements at positions P-1 and P5 pointing to the TCR in both THd af...

This paper presents and implements a single-stage high-power-factor light-emitting diode (LED) driver with coupled inductors, suitable for streetlight applications. The presented LED driver integrates an interleaved buck-boost power factor correction (PFC) converter with coupled inductors and a half-bridge-type series-resonant converter cascaded with a full-bridge rectifier into a single-stage ...

In this paper, we investigate the parameters affecting Total Harmonic Distortion (THD) and Power Supply Rejection Ratio (PSRR) in PWM Class D Amplifiers (CDAs) on the basis of linear models with feedback. From our mathematical analysis, we show that the THD of a PWM Class D amplifier with feedback can be improved by increasing the gain of the integrator through adding another amplifier at the o...