A new approach to dynamic control of synchronous generator in a bulk electric power system by direct feedback linearization

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作者
Sajedi, S. [1 ]
Khalifeh, F. [1 ]
Karimi, T. [1 ]
Khalifeh, Z. [1 ]
机构
[1] Department of Electrical Engineering, Fasa Branch, Islamic Azad University, Fasa, Fars, Iran
关键词
Electric machine control - Feedback linearization - Linear systems - Electric power system control - Linear transformations - Synchronous generators;
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摘要
Feedback linearization is a common approach used in controlling nonlinear systems. The approach involves coming up with a transformation of the nonlinear system into an equivalent linear system through a change of variables and a suitable control input. In this paper a new control structure based on the application of the method of exact linearization by Direct Feedback Linearization for a synchronous generator is presented. The power system model consists of a single axis flat rotor machine, connected to an infinite power bus. This way the sub-transient phenomena are ignored. The global system consisting of a turbine and a generator that produces the electrical output power is coupled and it presents multiplicative and harmonic non-linearities. The application of a DFL on the output voltage equation expressed as a function of the electrical system parameters referred to the generator practically turns the non linear system into two uncoupled subsystems with the possibility of independently controlling the output voltage and the frequency. © Maxwell Scientific Organization, 2011.
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页码:1239 / 1245
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