Essays about: "hybrid filter"

Showing result 21 - 25 of 36 essays containing the words hybrid filter.

1. 21. Mitigation of Background Harmonic Amplification at PCC Using Active Filtering of STATCOM

   University essay from KTH/Elkraftteknik

   Author : Luai Malki; [2017]
   Keywords : FACTS; Hybrid-STATCOM; TSC; TSR; VSC; passive filter; active filter; PWM; MMC; passivity; input admittance; resonance; harmonics; ABB;

   Abstract : Shunt compensation devices have been a powerful candidate for expanding the limits of transmission facilities, allowing more active power transport and supporting voltage and overall stability of the network. An example of such devices is the Static Synchronous Compensator (STATCOM) which is based on Voltage Source Converter (VSC) which synthesizes output voltage and current for mainly reactive power compensation. READ MORE

3. 22. Current ripple simulation of the electric system of an electric bus

   University essay from Lunds universitet/Industriell elektroteknik och automation

   Author : Christian Lugnberg; David Wenander; [2017]
   Keywords : Electromobility; electric propulsion system; current ripple; hybrid vehicles; simulation model; power electronics; LTspice; Technology and Engineering;

   Abstract : With effect of global warming and climate change the electrification of vehicles enables a more sustainable and environmentally friendly alternative to conventional vehicles as it reduces toxic emissions and overall energy consumption. Different extents of electrification is today used. Hybrid and electric vehicles are two examples. READ MORE

4. 23. Multisensor fusion and control strategies for low cost hybrid stepper motor solutions

   University essay from Luleå tekniska universitet/Signaler och system

   Author : Mattias Wallin; [2017]
   Keywords : Multisensor fusion; Hybrid Stepper Motor; Extended Kalman Filter;

   Abstract : This thesis has explored if it is feasible to produce a good estimation of the rotational position of a stepper motor by using sensor fusion schemes to merge a sensorless position estimation (based on the back electromotive force) with the measurement from a magnetic rotational position sensor. The purpose was to find a cheaper alternative for position feedback in closed loop control from conventionally used rotational encoders and resolvers. READ MORE

5. 24. Estimation and Compensation of Load-Dependent Position Error in a Hybrid Stepper Motor

   University essay from Linköpings universitet/Reglerteknik

   Author : Anton Ronquist; Birger Winroth; [2016]
   Keywords : Adaptive Notch Filter; Back-EMF; Electric Motor Position Control; Error Modelling; Field-Oriented Control; Hybrid Stepper Motor; Kalman Filter; Load Angle; Magnetic Rotary Position Sensor; Sensorless Control; Sliding Window Discrete Fourier Transform; Stall Detection and Prediction.;

   Abstract : Hybrid stepper motors are a common type of electric motor used throughout industry thanks to its low-cost, high torque at low speed and open loop positioning capabilities. However, a closed loop control is often required for industrial applications with high precision requirements. READ MORE

6. 25. Detecting visual plagiarism with perception hashing

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

   Author : Johannes Wålarö; [2015]
   Keywords : ;

   Abstract : Classifying images and deciding algorithmically whether or not they are the same image is a complex problem in com-puter science. This report looks at using perceptual hashing in order to fingerprint images so that they may be matched to one and other. READ MORE