| Summary: | 碩士 === 國立虎尾科技大學 === 動力機械工程研究所 === 92 === The power electronic equipments are used widely in recent years, but the
power electronic equipments themself are the non-linear loads. It will introduce
a lot of harmonics waves in the power systems and reduce power quality.
Therefore, this thesis presents use of finite element software to analysis
magnetic field of transformers. Aiming at the influence on single-phase
transformer by harmonic source. When we are considering the loading at
different power factors, based on the observation of the relationship between
magnetic flux density and magnetic field intensity, it can help to analyze the
effects of power factory acting on the transformer.
When a transformer is exciting, because overload and harmonic will cause
the saturation of the transformer, cause the temperature rising of the transformer
and the efficiency of transformer to reduce. This thesis will analysis following
problems : (1) secondary coil of the transformer by different load (2) relation
between the transformer and power factor (3) the influence of the transformer by
harmonic source. This problems cause to effect of magnetic flux density and
magnetic field intensity, therefore, further investigations should be continuous, it
may become an important design parameters of transformer.
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