Publications by Ioannis Lymperopoulos

System and method for operating a combination of heterogeneous energy resources for fast grid services

Colin Neil Jones, Tomasz Tadeusz Gorecki, Faran Ahmed Qureshi, Ioannis Lymperopoulos, Luca Fabietti

The present invention concerns a method of controlling a set of electrical power resources in an electrical power grid managed by a power grid operator. The set comprises a first electrical power resource with a first electrical power response frequency an ...

2019

Experimental Implementation of Frequency Regulation Service Using Commercial Buildings

Colin Neil Jones, Tomasz Tadeusz Gorecki, Faran Ahmed Qureshi, Ioannis Lymperopoulos, Altug Bitlislioglu, Luca Fabietti

Frequency control reserves are a fundamental mechanism in the current electric power system to preserve the balance between demand and generation of active power at all times. The traditional approach is to exploit conventional power plants for frequency r ...

2018

Economic Advantages of Office Buildings Providing Ancillary Services with Intraday Participation

Ali Ahmadi Khatir, Colin Neil Jones, Faran Ahmed Qureshi, Ioannis Lymperopoulos

Controlling the consumption profile of office buildings can be used to provide balancing services to the power grid at a financial benefit without violating its thermal comfort constraints. The economic advantage of such a service is a reduction in the tot ...

2018

Provision of Ancillary Services utilizing a Network of Fast-Charging Stations for Electrical Buses

Colin Neil Jones, Faran Ahmed Qureshi, Ioannis Lymperopoulos, Altug Bitlislioglu

We demonstrate how charging infrastructure for electrical vehicles can be utilized for the provision of Ancillary Services to the Power Grid. Fast- charging stations that supply energy to vehicles at high power rates in- corporate energy storage to prevent ...

2018

Experimental Implementation of Frequency Regulation Services Using Commercial Buildings

Colin Neil Jones, Tomasz Tadeusz Gorecki, Faran Ahmed Qureshi, Ioannis Lymperopoulos, Altug Bitlislioglu, Luca Fabietti

IEEE2017

A Nonlinear Adaptive Controller for Airborne Wind Energy Systems

Colin Neil Jones, Andrea Alessandretti, Ioannis Lymperopoulos, Sanket Sanjay Diwale

A nonlinear adaptive path following controller for a kite based airborne wind energy system is presented. For a given desired geometric path, we provide necessary conditions for closed-loop convergence of the kite to a tube centered around the desired path ...

2016

Improved path following for kites with input delay compensation

Sean Costello, Colin Neil Jones, Nikitas Rontsis, Ioannis Lymperopoulos

In kite power systems, substantial input delay between the actuator and the tethered kite can severely hinder the performance of the control algorithm, limiting the capability of the system to track power-optimal loops. We propose a method that deals with ...

IEEE2015

Optimization of an Airborne Wind Energy System using Constrained Gaussian Processes with Transient Measurements

Colin Neil Jones, Ioannis Lymperopoulos, Sanket Sanjay Diwale

Airborne wind energy systems are built to exploit the stronger and more consistent wind available at high altitudes that conventional wind turbines cannot reach. This however requires a reliable controller design that can keep the airborne system flying fo ...

2015

Providing ancillary service with commercial buildings: the Swiss perspective

Ali Ahmadi Khatir, Colin Neil Jones, Faran Ahmed Qureshi, Ioannis Lymperopoulos, Xuan Truong Nghiem

Ancillary services constitute the cornerstone of the power grid. They allow for an efficient system operation, provide resilience to uncertainties and establish safeguards against unprecedented events. Their importance is growing due to the rise of grid de ...

2015

Optimization of an Airborne Wind Energy System Using Constrained Gaussian Processes

Colin Neil Jones, Ioannis Lymperopoulos, Sanket Sanjay Diwale

Wind resources tend to be significantly stronger and more consistent with increasing altitude. This effect creates a potential for power generation that can be reaped by an Airborne Wind Energy system positioned at elevations exceeding the height of conven ...

2014

Optimal Altitude Estimation for Power Generating Kites in an Uncertain Wind-Field

Colin Neil Jones, Ioannis Lymperopoulos

2013