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Power flow control of a doubly-fed induction machine coupled to a flywheel

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Batlle Arnau, CarlesMés informacióMés informacióMés informació
Dòria Cerezo, ArnauMés informacióMés informacióMés informació
Ortega, Romeo
Document typeResearch report
Defense date2004-05
Rights accessOpen Access
Attribution-NonCommercial-NoDerivs 2.5 Spain
Except where otherwise noted, content on this work is licensed under a Creative Commons license : Attribution-NonCommercial-NoDerivs 2.5 Spain
Abstract
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.
Is part ofIOC-DT-P; 2004-7
URIhttp://hdl.handle.net/2117/390
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  • ACES - Control Avançat de Sistemes d'Energia - Reports de recerca [31]
  • IOC - Institut d'Organització i Control de Sistemes Industrials - Reports de recerca [88]
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