This paper presents the implementation of a control system of an inverter for grid connected photovoltaic (PV) applications, using a low cost TMS320F2812 eZdsp board. The implemented control system contains a P+Resonant current controller, a Maximum Power Point Tracker (MPPT) to optimize the power extraction from the PV panel, and a Phase Lock Loop (PLL) for grid synchronization. The whole cont...

OBJECTIVE To explore predictors of the 6-month clinical outcome of thalamic hemorrhage, and evaluate if minimally invasive thalamic hematoma drainage (THD) could improve its prognosis. METHODS A total of 54 patients with spontaneous thalamic hemorrhage were evaluated retrospectively. Clinical data, including demographics, stroke risk factors, neuroimaging variables, Glasgow Coma Score (GCS) o...

INTRODUCTION Transanal haemorrhoidal dearterialisation (THD) is a novel non-excisional technique based on suture closure of the haemorrhoidal arterial flow feeding the haemorrhoidal plexus. The primary objective of this study was to report the first Danish experience with THD. METHODS The study was a single-centre, non-controlled retrospective study that comprised consecutive patients from a ...

This paper reports the performance of a speed sensorless stand-alone Variable Speed Constant Frequency (VSCF) Doubly Fed Induction Generator (DFIG) capable of supplying all types of loads. The proposed method maintains the Total Harmonic Distortion (THD) of the machine current and the load voltage within acceptable limits. In contrast to previously proposed methods, in this paper, the stator si...

Repetitive control (RC) scheme presents an attractive solution to achieve excellent steady-state tracking error and low total harmonic distortion (THD) for periodic signals. RC can produce extremely large gains at fundamental and each harmonic frequency of reference signal to achieve all harmonics suppression. However, a DC-AC inverter always has uneven THD distribution, e.g. THD concentrates a...

In this paper we consider the problem of balancing a three-phase load and how to optimize the TCR operation. For an unbalanced load change a VAT technique is developed by the authors to determine the three compensating susceptance values and then the unsymmetrical firing angles of TCR, which are necessary for a balanced load operation. An objective function (THD) is determined to measure the di...

BACKGROUND Infrequent dialysis, namely once-a-week session combined with very low-protein, low-phosphorus diet supplemented with ketoacids was reported as a useful treatment schedule for ESRD patients with markedly reduced residual renal function but preserved urine output. This study reports our findings from the application of a weekly dialysis schedule plus less severe protein restriction (s...