Browsing Institutt for elektro, IT, og kybernetikk by Author "Sharma, Roshan"
Now showing items 21-30 of 30
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A robust model predictive control with constraint modification for gas lift allocation optimization
Janatianghadikolaei, Nima; Sharma, Roshan (Peer reviewed; Journal article, 2023)This paper presents a novel approach for implementing a robust real-time optimization framework under the presence of parametric uncertainty. Conservativeness is an inevitable drawback of a robust control approach. Therefore ... -
Second Order KP Scheme for the Solution of flow in a Venturi Channel
Dissanayake, Susantha; Sharma, Roshan; Lie, Bernt (Journal article; Peer reviewed, 2018)In many different applications, a Venturi channel is used as a tool to compute fluid flow rates. The Saint-Venant equation is a hyperbolic type Partial Differential Equation (PDE) which can be used to model fluid flows ... -
Second order scheme for open channel flow
Sharma, Roshan (Professional article, 2015-08-26)In the search for a numerical scheme which: (i) is semi-descrete in nature (only space discritization) so that built-in ODE solvers in MATLAB or Modelica can be used, (ii) can handle dry bed conditions (island or dry ... -
Sensor placement and parameter identifiability in grey-box models of building thermal behaviour
Brastein, Ole Magnus; Sharma, Roshan; Skeie, Nils-Olav (Journal article; Peer reviewed, 2019)Building energy management systems can reduce energy consumption for space heating in existing buildings, by utilising Model Predictive Control. In such applications, good models of building thermal behaviour is important. ... -
Short-Term Production Optimization for Electric Submersible Pump Lifted Oil Field With Parametric Uncertainty
Janatianghadikolaei, Nima; Sharma, Roshan (Peer reviewed; Journal article, 2023)This paper uses a scenario-based optimization method to address the Daily Production Optimization from an Electric Submersible Pump lifted oil field under the presence of uncertainty. The primary contribution of this work ... -
Stochastic MPC For Optimal Operation of Hydropower Station Under Uncertainty
Jeong, Changhun; Sharma, Roshan (Peer reviewed; Journal article, 2022)The operational condition at the Dalsfoss power station is complicated due to many requirements related to environmental regulations and safety constraints such as the seasonally varying water level requirement at the ... -
Third Order Reconstruction of the KP Scheme for Model of River Tinneselva
Dissanayake, Susantha; Sharma, Roshan; Lie, Bernt (Journal article; Peer reviewed, 2017)The Saint-Venant equation/Shallow Water Equation is used to simulate ow of river, ow of liquid in an open channel, tsunami etc. The Kurganov-Petrova (KP) scheme which was developed based on the local speed of discontinuity ... -
Tuning Model Predictive Control for Rigorous Operation of the Dalsfoss Hydropower Plant
Jeong, Changhun; Sharma, Roshan (Peer reviewed; Journal article, 2022)Model predictive control is considered an attractive control strategy for the operation of hydropower station systems. It is due to the operational constraints or requirements of the hydropower system for safe and eco-friendly ... -
Use of Orthogonal Collocation Method for a Dynamic Model of the Flow in a Prismatic Open Channel: For Estimation Purposes
Jinasena, Asanthi; Kaasa, Glenn-Ole; Sharma, Roshan (Journal article; Peer reviewed, 2017)The modeling and simulation of free surface flows are complex and challenging. Especially, the open channel hydraulics are often modeled by the well–known and efficient Saint–Venant equations. The possibility of efficiently ... -
Using MPC to Balance Intermittent Wind and Solar Power with Hydro Power in Microgrids
Pandey, Madhusudhan; Winkler, Dietmar; Sharma, Roshan; Lie, Bernt (Peer reviewed; Journal article, 2021)In a microgrid connected with both intermittent and dispatchable sources, intermittency caused by sources such as solar and wind power plants can be balanced by dispatching hydro power into the grid. Both intermittent ...