Alternative energy system control method and apparatus

G - Physics – 05 – B

Patent

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G05B 11/32 (2006.01) G05B 11/42 (2006.01)

Patent

CA 2551908

A multivariable control system provides regulation for a plurality of control variables of interest based on selecting a particular one of the variables for regulation relative to a corresponding setpoint, while continuing to monitor the other variables and switching regulation control over to another one of the variables as needed to maintain all of them within their allowed ranges. The system includes one or more PID regulators that tune themselves for the particular variables selected for regulation control. In an exemplary embodiment, the control system is configured for controlling an alternative energy system, wherein it includes one or more power flow devices (20) that control power flow between electrical energy storage devices (EESDs) (30) and a common dc bus and an external ac electrical system.

L'invention concerne un système de commande multivariable qui permet de réguler plusieurs variables de commande d'intérêt sur la base de la sélection d'une variable particulière de régulation par rapport à une valeur prédéterminée, tout en continuant de surveiller les autres variables et en commutant la commande de régulation vers une autre variable, s'il y a lieu, afin de les maintenir toutes dans leurs limites autorisées. Le système comporte en outre au moins un régulateur PID qui s'accorde lui-même en fonction de la variable particulière choisie pour la commande de régulation. Dans un mode de réalisation, le système de commande est conçu pour commander un système d'énergie de substitution et comporte au moins un dispositif de flux de puissance (20) qui commande ledit flux de puissance entre des dispositifs de stockage d'énergie électrique (EESD) et un bus CC commun et/ou entre le bus CC et un système électrique CA extérieur.

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