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Power flow control of a doubly-fed induction machine coupled to a flywheel
Batlle Arnau, Carles; Dòria Cerezo, Arnau; Ortega, Romeo
Universitat Politècnica de Catalunya. Institut d'Organització i Control de Sistemes Industrials; Universitat Politècnica de Catalunya. ACES - Control Avançat de Sistemes d'Energia
We consider a doubly-fed induction machine –controlled through the rotor voltage and connected to a variable local load- that acts as an energy-switching device between a local prime mover (a flywheel) and the electrical power network. The control objective is to optimally regulate the power flow which is achieved commuting between two different steady-state regimes. We first show that zero dynamics of the system is only marginally stable complicating its control via feedback linearization. Instead, we apply the energy-based Interconnection and Damping Assignment Passivity-Based Control technique that does not require stable invertibility. It is shown that the partial differential equation that appears in this method can be obviated fixing the desired closed-loop total energy and adding new terms to the interconnection structure. Furthermore, to obtain a globally defined control law we introduce a state-dependent damping term that has the nice interpretation of effectively decoupling the electrical and mechanical parts of the system. This results in a globally asymptotically stabilizing controller parameterized by two degrees of freedom, which can be used to implement the power management policy. An indirect adaptive scheme for the rotor and stator resistances is also introduced. The controller is simulated and shown to work satisfactorily for various realistic load changes.
Àrees temàtiques de la UPC::Energies::Energia elèctrica::Automatització i control de l’energia elèctrica
Energy management
Flywheel energy storage system
Double-fed induction machine
Sistema d'emmagatzematge d'energia cinètica
Gestió de flux de potència
Sistema de almacenamiento de energía cinética
Gestión energética
IDA-DBA
Màquina d'inducció doblement alimentada
Máquina de inducción doblemente alimentada
Gestió energètica
Control automàtic -- informes tècnics
Enginyeria elèctrica -- producció -- informes tècnics
Attribution-NonCommercial-NoDerivs 2.5 Spain
http://creativecommons.org/licenses/by-nc-nd/2.5/es/
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