Now showing items 1-10 of 133
An ice machine adapted into an autonomous photovoltaic system without batteries using a variable-speed drive
(JOHN WILEY & SONS LTD, 2010)
The adaptation of a commercially available ice machine for autonomous photovoltaic operation without batteries is presented. In this adaptation a 1040 W(p) photovoltaic array directly feeds a variable-speed drive and a 24 ...
An Enhanced dq-Based Vector Control System for Modular Multilevel Converters Feeding Variable-Speed Drives
Modular multilevel converters (M2C) are considered an attractive solution for high power drive applications. However, energy balancing within the converter is complex to achieve, particularly when the machine is operating ...
An integrated converter and machine control system for MMC-based high-power drives
The modular multilevel converter (MMC) is a promising topology for high-power drive applications. However, large voltage fluctuations can be produced in the floating capacitors when the machine operates with high stator ...
Mindfulness, inattention and performance in a driving simulator
(Institution of Engineering and Technology, 2015-09)
The following study will explore the link between mindfulness, driver inattention and a number of driving performance variables that were tested using the SIMUVEG driving simulator. 67 subjects between the ages of 19 and ...
New approach of induction machine drive using an adaptive digital PID controller with gain planning based on artificial neural networks
The present work introduces a new strategy of induction machines speed adjustment using an adaptive PID (Proportional Integral Derivative) digital controller with gain planning based on the artificial neural networks. This ...
A new design methodology for multipulse rectifiers with Delta auto-connected transformers and a retrofit application in Adjustable Speed Drives (ASDs)
Multipulse rectifiers can replace a conventional six pulse three-phase rectifier (diode bridge) providing a DC voltage with low ripple, low Total Harmonic Distortion of current (THDi) and a high Power Factor (PF). In this ...
Improving Power Quality in Cascade Multilevel Converters Based on Single-Phase Nonregenerative Power Cells
(IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC, 2014)
Variable speed refrigeration system with HPF input rectifier stage
This paper is based on the analysis and implementation of a new drive system applied to refrigeration systems, complying with the restrictions imposed by the IEC standards (Harmonic/Flicker/EMI-Electromagnetic Interference ...