Essays about: "low voltage dc"

Showing result 21 - 25 of 65 essays containing the words low voltage dc.

1. 21. Investigation of electromagnetic compatibility (EMC) of low-voltage (<60V) DC electric motors in construction machinery application

   University essay from Linköpings universitet/Fysik och elektroteknik; Linköpings universitet/Tekniska fakulteten

   Author : David Luong; Ibrahim Salloum; [2019]
   Keywords : EMC; brushed dc motor; arcing; inrush currents; X2Y capacitor; NTC thermistor; common mode ferrites; differential mode ferrites; grounding; cable placement; motor design parameters;

   Abstract : The brushed DC motor is a source of electromagnetic emission that may cause interference. The main issues with brushed DC motor are arcing, which occurs between the brushes and commutator, and inrush current. It is possible to decrease the electromagnetic emissions by addressing the source (brushed dc motor) and the installation. READ MORE

3. 22. Analysis of harmonic cross-modulation in HVDC line-commutated converters for practical design purposes

   University essay from Högskolan Väst/Avdelningen för Industriell ekonomi, Elektro- och Maskinteknik

   Author : Casper Karlsson; [2018]
   Keywords : Power transmission; design; filters;

   Abstract : The use of HVDC has many benefits over HVAC for some specific power transmission purposes. However, two major problems with HVDC links are that the converters produce harmonics and consume reactive power. Electrical filters are used to compensate for this and are a major cost driver of HVDC links. READ MORE

4. 23. Control, Design, and Implementation of Quasi Z-source Cascaded H-Bridge Inverter

   University essay from Linköpings universitet/Elektroniska Kretsar och System

   Author : Fares Al-Egli; Hassan Mohamed Moumin; [2018]
   Keywords : Quasi Z-Source Inverter; QZSI; Multi-Level Inverter; Single-Phase; Cascaded H-Bridge; PS-PWM;

   Abstract : This report is about control, design and implementation of a low voltage-fed quasi Z-source three-level inverter. The topology has been interesting for photovoltaic-systems due to its ability to boost the incoming voltage without needing an extra switching control. READ MORE

5. 24. A Differential Measurement Probe with High Common Mode Rejection

   University essay from Lunds universitet/Industriell elektroteknik och automation

   Author : Björn Franzén; [2018]
   Keywords : Common mode rejection; Fiber-optic measurement probe; Current Sensing; High voltage measurements; Optical isolation; Technology and Engineering;

   Abstract : Measuring signals with high frequency common mode components are typically prone to measurement errors due to low common mode rejection at high frequencies. The purpose of this master thesis is to design a measurement probe that presents sufficient common mode rejection to measure current on high voltage motor drives directly at the switching stage, before filtering. READ MORE

6. 25. Hardware optimizations and solutions for wireless low power kinetic energy applications

   University essay from KTH/Skolan för datavetenskap och kommunikation (CSC)

   Author : Anton Meier; [2017]
   Keywords : Energy harvesting; Wireless peripherals; Kinetic energy; Bluetooth; Low power; Smart Home; IoT;

   Abstract : The number of IoT (Internet of Things) devices available on the market has been growing rapidly in the past few years and is expected to grow even more in the years to come. These IoT devices are predominantly in the form of very small wireless peripherals with low power consumption making them suitable for running over extended periods of time using only coin cell batteries. READ MORE