| Summary: | 碩士 === 國立海洋大學 === 電子工程學系 === 82 === Most physical systems has nonlinearity in natural. In the
discussion of nonlinear system, the system is often linearized
at the equilibrium point to obtain a linear system which is
used as an approximation to the original system to avoid the
difficulity of dealing with nonlinear systems. However, there
are still some defferences bwtween the linearized system and
the original system. The method to be studied is the feedback
linearization method which is not the same as the conventional
linearization method. The feedback linearization transforms
the original nonlinear system into an equivalent linear system
via coordinate transfor- mation and stste feedback. In
comparision with the conventional linearization method which is
just an approximation method, the feedback linearization method
is an exact linearization method and thus linear system theory
can then be readily applied. In the thesis, the method of
feedback linearization is dis- cussed and applied to the
dynamic responsive analysis of a single-machine-infinitive-bus
power system. First, the applicabi- lity of feedback
linearization is analyzed. Then the related pro- blems of
dynamic stability and control of the system will be studied
under fault conditions on buses and transmission lines. The
results reveal that by using the feedback linearization we can
derive for the original system an exact linear equivalent model
from which precise analysis results can be obtained.
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