Sökning: "Mixed-integer program"

Visar resultat 1 - 5 av 14 uppsatser innehållade orden Mixed-integer program.

1. 1. Energy-Efficient Fixed-Coefficient FIR Filters for Millimeter-Wave Radios

   Uppsats för yrkesexamina på avancerad nivå, Lunds universitet/Institutionen för reglerteknik

   Författare :Erik Lundell; Gustav Molin; [2023]
   Nyckelord :Technology and Engineering;

   Sammanfattning : With the introduction of millimeter-wave antenna arrays in 5G base-stations and ever-increasing data volumes, the power consumption of the signal processing in digital radio systems has increased over the last decade. This, combined with increased cost and environmental awareness, has put focus on power optimization. LÄS MER

3. 2. Integration of an industrial heat pump for a TES-based power-to-heat system : A techno-economic assessment

   Master-uppsats, KTH/Skolan för industriell teknik och management (ITM)

   Författare :Cristian Contreras Aramayo; [2023]
   Nyckelord :Heat; electricity; industrial heat pump; power-to-heat;

   Sammanfattning : This work aims to investigate the potential electricity savings, as well as the potential decrease in LCoH and OPEX, that an integration of an industrial heat pump can have on a molten salt-based power-to-heat system with integrated thermal energy storage. The original system uses an electric heater to heat up molten salt, which acts as the heat transfer fluid of the system, from which heated steam can be produced and delivered at the output. LÄS MER

4. 3. An Optimization Model for Electric Vehicle Routing with Tractor Swapping

   Master-uppsats, KTH/Matematik (Avd.)

   Författare :Alexander Strid; Daniel Liu; [2022]
   Nyckelord :Vehicle Routing Problem VRP ; tractor swapping; electric VRP; rich VRP; heavy goods vehicles; mixed-integer linear programming MILP ; applied mathematics; ruttoptimering; traktorbyte; elektriska lastbilar; tunga lastbilar; linjär heltalsoptimering; tillämpad matematik;

   Sammanfattning : The purpose of this thesis is to investigate how tractor swapping can be implemented in Vehicle Routing Problems (VRP) with electric heavy goods vehicles, and to evaluate how a model that allows for tractor swapping performs, in terms of schedule cost, against a model that does not. Hence, this thesis introduces a new rich VRP variant which includes tractor swapping, as well as time windows, pickup and delivery, and electric vehicles. LÄS MER

5. 4. Predictive Energy Management of Long-Haul Hybrid Trucks : Using Quadratic Programming and Branch-and-Bound

   Master-uppsats, Linköpings universitet/Fordonssystem

   Författare :Erik Jonsson Holm; [2021]
   Nyckelord :Predictive energy management; quadratic programming; branch-and-bound; mixed-integer quadratic programming; energy optimization; look-ahead control; model predictive control; receding horizon control; optimal control; convex optimization; heavy-duty vehicle; long-haul truck; hybrid electric vehicle;

   Sammanfattning : This thesis presents a predictive energy management controller for long-haul hybrid trucks. In a receding horizon control framework, the vehicle speed reference, battery energy reference, and engine on/off decision are optimized over a prediction horizon. LÄS MER

7. 5. Optimisation of the Distribution of COVID-19 Vaccines

   Kandidat-uppsats, KTH/Matematisk statistik

   Författare :Paula Isacson; Daniel Maslov; [2021]
   Nyckelord :Mixed-integer program; stochastic program; supply chain management; reliability; Blandad heltalsprogrammering; stokastisk programmering; logistik av försörjningskedja; tillförlitlighet;

   Sammanfattning : This paper explores how to optimally distribute vaccines by deciding what middle warehouses to use for storage. For this purpose, a network has been designed with a central warehouse, a set of middle warehouses and a set of local hospitals. LÄS MER