Essays about: "Piecewise linear system"

Showing result 1 - 5 of 12 essays containing the words Piecewise linear system.

  1. 1. Modeling the Head Effect in Hydropower River Systems using MILP and BLP Approaches

    University essay from Linköpings universitet/Tillämpad matematik; Linköpings universitet/Tekniska fakulteten

    Author : Lina Larsson; Mikaela Lindberg; [2022]
    Keywords : Hydropower optimization; Hydropower scheduling; The head effect; Bilinear programming; Mixed-integer linear programming;

    Abstract : With a fast-growing electricity demand and a larger proportion of intermittent energy sources follows a greater need for flexible and balancing sources of electricity, such as hydropower. Planning of hydropower production is considered to be a difficult problem to solve due to several nonlinearities, combinatorial properties and the fact that it is a large scale system with spatial-temporal coupling. READ MORE

  3. 2. Propagation of Radio Waves in a Realistic Environment using a Parabolic Equation Approach

    University essay from Linköpings universitet/Teoretisk Fysik

    Author : Jonas Ehn; [2019]
    Keywords : Electromagnetic fields; wave propagation; radar; parabolic equation; split-step Fourier method;

    Abstract : Radars are used for range estimation of distant objects. They operate on the principle of sending electromagnetic pulses that are reflected off a target. This leads to the propagation of electromagnetic waves over large distances. As the waves propagate, they are affected by several aspects that decrease the performance of the radar system. READ MORE

  4. 3. Numerical Optimal Control of Hybrid Electric Trucks : Exhaust Temperature, NOx Emission and Fuel Consumption

    University essay from Linköpings universitet/Fordonssystem

    Author : Fredrik Andersson; Hampus Andersson; [2018]
    Keywords : Numerical optimal control; HEV; Diesel electric hybrid truck; Exhaust temperature; Emissions; NOx; SCR;

    Abstract : The controls for a parallel hybrid electric truck are optimized using numerical optimal control. Trade-offs between catalyst light-off times, NOx emission and fuel consumption have been investigated for cold starts at two operating points, as well as temperature differences between conventional and hybrid powertrains during WHTC (World Harmonized Transient Cycle). READ MORE

  5. 4. Low Frequency Simulation of Traction System for EMC Analysis

    University essay from Linköpings universitet/Reglerteknik; Linköpings universitet/Tekniska högskolan

    Author : Stina Hörnström; [2014]
    Keywords : ;

    Abstract : Bombardier Transportation in Västerås is developing traction system for trains. These systems must comply with Electromagnetic Compatibility (EMC) standards. Harmonics generated by the traction system is an EMC concern. Better models of the components enables more efficient and accurate prediction of harmonics generated in the traction system. READ MORE

  6. 5. Task Load Modeling for LTE Baseband Signal Processing with Regression Analysis Approach

    University essay from KTH/Signalbehandling

    Author : Chang Liu; [2014]
    Keywords : ;

    Abstract : In telecommunication baseband signal processing systems, thousands of tasks are executed every millisecond. These tasks take in dierent parameters and cause heavy load to the system. The aim of the thesis is to build proper mathematical models for these tasks, enabling the prediction of their load given the corresponding parameters. READ MORE