This paper presents a medium-voltage drive based on an open-end winding induction machine supplied by multilevel power converter topology. The consists of cascaded two-level three-phase voltage source inverters (VSI) connected to each side the windings and VSI is fed isolated DC supply. topology has been previously reported in literature as sinusoidal pulse-width modulation operating open loop....

This paper proposes a compensation PWM technique for the extension of output voltage ranges in three-phase VSI applications using three shunt resistors. The proposed technique aims to solve the dead zone, which occurs in high modulation indexes. In the dead zone, two phase currents cannot be sampled correctly, so that the three-phase VSI cannot be operated up to the maximum output voltage. The ...

Application of neural networks in execution of programmed pulse width modulation (PPWM) of a voltage source inverter (VSI) is studied in this paper. Using the proposed method it is possible to cancel out the desired harmonics in output of VSI in addition to control the magnitude of fundamental harmonic, contineously. By checking the non-trained values and a performance index, the most appropria...

Pulse Width Modulated (PWM) voltage source inverters (VSIs) are extensively used in industrial and domestic applications. The versatile natural sampled sinusoidal PWM (SPWM) method can perform output voltage control with acceptable indices. In these PWM-VSI, the coarse voltage regulation is done with change in modulation depth while fine voltage regulations have not been addressed by other auth...

Follicular lymphoma (FL) is one of the most common types of non-Hodgkin's lmphomas in the world. Diagnosis of FL is based on morphological and immunohistochemical characteristics found on tissue sections. Our project's aim is to develop computer-aided analysis tools on virtual slide images (VSI) of lymphoid tissues with the purpose of improving the FL grading performed in malignant follicles. I...

We consider the output feedback event-triggered control of an off-grid voltage source inverter (VSI) with unknown L ́ C filter dynamics and connected load in the presence of an input disturbance acting at the plant. Due to uncertain dynamics and unmodelled parameters in the L ́ C filter connected to the VSI, we use an adaptive observer to reconstruct the system’s states. The control mechanism is...

Prompt delivery of cardiopulmonary resuscitation (CPR) increases the probability of survival from sudden cardiac arrest (SCA) by 2to 3-fold, yet >60% of SCA victims in the United States do not receive bystander CPR. Despite the availability of CPR certification programs for the lay public, a recent investigation documented that training rates in the United States are strikingly low. Given that ...

This paper deals with the use of shunt active filter to compensate current perturbations produced by non linear loads. To perform the identification of disturbing currents, the so called Instantaneous Active and Reactive Power Method (pq) is used. A Phase Locked Loop (PLL) circuit, locked to the fundamental frequency of the system voltage, is also introduced for eventual mains voltages perturba...

In this paper combination of a load-commutated inverter (LCI) and a voltage-source inverter (VSI) are employed for performance analysis of induction motor drive. Performance of the drive has been evaluated through the different variation in reference speed and load torque. proposed LCI-based induction motor drives include the following Advantages: 1) sinusoidal motor phase current and voltage b...

Abstract – This paper comprehensively analyses the design of Space Vector PWM (SVPWM) using Simulink and presents the comparative analysis of improved quality three phase PWM-VSI for Adjustable Speed Drives (ASD’s). In SVPWM the complex reference voltage phasor is processed as a whole, therefore, interaction between three motor phases is exploited, and this strategy reduces the switching losses...