In this article, we propose a novel four-stage distributed controller for dc microgrid that achieves proportional power sharing and average voltage regulation the voltages at actuated unactuated buses. The is presented comprising multiple generation units (DGUs) with time-varying actuation states, dynamic <inline-formula xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink"> <tex-math notation="LaTeX">$RLC$</tex-math> </inline-formula> lines, nonlinear...

Wind energy is an integral part of nowadays supply and one the fastest growing sources electricity in world today. Accurate models for wind conversion systems (WECSs) are key interest analysis control design present future systems. Existing control-oriented WECSs subject to unstructured simplifications, which have not been discussed literature so far. Thus, this technical note presents thorough derivation a physical state-space model permanent magnet synchronous generator WECSs. The...

Modern power systems are characterized by low inertia and fast voltage dynamics due to the increase of sources connecting via electronics removal large traditional thermal generators. Power commonly equipped with controllers that able reach a desired setpoint within seconds. In this paper, we propose compare two approaches using Model Predictive Control (MPC) compute optimal references for electronic devices in order minimize losses DC microgrid: i) setpoint-tracking MPC which receives...

This paper investigates the quadratic dissipativity properties required when interconnecting subsystems. A constructive method for analysing results of interconnected dissipative subsystems is repurposed design without predefined properties. The proposed uses optimisation to find least restrictive requirements unknown while ensuring stability or dissipativity. Furthermore, methods calculating passivity indices Krasovskii passive systems are provided, allowing their inclusion in...

In this paper, we introduce the novel concept of economic ports, allowing modular and distributed optimal operation networked microgrids. Firstly, design a price-based controller for single microgrid show asymptotic stability. Secondly, define physical interconnection ports study dissipativity properties these ports. Lastly, propose an scheme microgrids via This requires only exchange local prices allows globally at steady state, while guaranteeing stability passivity The methods are...

Full-order state-space models represent the starting point for development of advanced control methods wind turbine systems (WTSs). Regarding existing control-oriented WTS models, two research gaps must be noted: (i) There exists no full-order model in form one overall ordinary differential equation that considers all dynamical effects which significantly influence electrical power output; (ii) reduced-order are subject to rather arbitrary simplifications and not validated against a model....

Modern power systems are characterized by low inertia and fast voltage dynamics due to the increase of sources connecting via electronics removal large traditional thermal generators. Power commonly equipped with controllers that able reach a desired setpoint within seconds. In this paper, we propose compare two approaches using Model Predictive Control (MPC) compute optimal references for electronic devices in order minimize losses DC microgrid: i) setpoint-tracking MPC which receives...

In this paper, we introduce the novel concept of economic ports, allowing modular and distributed optimal operation networked microgrids. Firstly, design a price-based controller for single microgrid show asymptotic stability. Secondly, define physical interconnection ports study dissipativity properties these ports. Lastly, propose an scheme microgrids via This requires only exchange local prices allows globally at steady state, while guaranteeing stability passivity The methods are...

In this paper, we propose a hierarchical control structure comprising three layers which is able to (i) achieve economic dispatch for islanded DC microgrids, (ii) compensate load and generation disturbances with batteries performing power sharing (iii) stabilize non-passive constant loads. The are charged economically optimally by the third layer controller such state of charges (SOCs) remain constant. proportional achieved employing novel law solves linearized steady-state flow equations in...

The optimal operation of District Heating Networks (DHNs) is a challenging task. Current or future dispatch energy management systems attempt to optimize objectives, such as monetary cost minimization, emission reduction, social welfare maximization. Typically, this requires highly nonlinear models and has substantial computational cost, especially for large DHNs. Consequently, it difficult solve the resulting programming problem in real time. In particular, typical applications allow no...

In this paper, we propose an approach to distributed model predictive control based on optimization and suboptimal theory. the proposed method, individual subsystems are coupled through inputs do not need exchange information about their system dynamics or objective function. Coordination is achieved by iteratively exchanging estimation of subsystem's optimal sequence only with neighboring subsystems. The compute admissible sequence, which asymptotically stabilizing system. With mild...

This paper presents an adaptive control strategy for solving multi-player noncooperative differential games with dynamics modelled as general nonlinear input-state-output port-Hamiltonian systems. The proposed controller is obtained by extending existing single-player feedback Nash to N players and using the Hamiltonian of system admissible control-Lyapunov function each player. Necessary sufficient conditions stability resulting controlled are provided employing Lyapunov theory....