交流接觸器於閉合過程之輸入電能分佈與電源初始相位角關連分析

本文旨在利用電磁接觸器的等效電路及機械方程式推導及分析電磁接觸器在閉合及已閉合等動態過程中在不同交流電源初始相位角度下被觸發動作，輸入電能在接觸器內部子系統的分佈情形，藉以進一步了解電磁接觸器的動態特性及輔助電磁接觸器之設計與特性改善。基於建模容易及模擬執行速度快的優點，本文採用磁路分析法作為電磁接觸器數學建模方法。分別從電磁接觸器電磁部份與機構部份研究電磁接觸器在不同工作過程的暫態行為。最後為了研究電磁接觸器輸入電壓於不同初始相位下接觸器的動態能量變化情形，藉由本文所建立之電磁接觸器模型計算分析，結果驗證本文所提之電磁接觸器動態能量分析方法確實可以找出最佳的線圈切入電壓初始相位，控制電磁接觸器輸入電能在內部各子系統能量消耗情形，並且也因而使接觸器接點閉合受到有效的控制，達成延長使用壽命與提高操作可靠度的控制目標。

關鍵字

電磁接觸器；磁路分析法；數學模型；電壓初始相位；能量分佈

並列摘要

The objective of this paper aims at making use of the equivalent electrical and mechanical system's models to deduce and analyze the relations between the dynamic behavior of an ac electromagnetic contactor and different initial phase angles of voltage source. By analyzing the input electrical energy distribution in each subsystem of contactor, we can further realize the related dynamic characteristics and precede the improvement of performance with the aid of obtained valuable results. Because of easy modeling and high calculating efficiency, the magnetic circuit analysis method is selected to establish contactor simulation model approach. Additionally, the system transient features of contactor are analyzed from two aspects such as electromagnetic part and mechanical part. The relations between initial phase angle and dynamic behavior are explored through simulation tests. From the simulation results, exactly there exists an optimum initial phase angle of voltage source, leading to a desired energy transfer from the voltage source. Moreover, the energy distribution related to each subsystem can also be obviously observed from all the simulation processes. The kinetic energy of contacts prior to the collision is effectively controlled, hence, the using lifespan is prolonged and the operating reliability is improved as well.

並列關鍵字

Electromagnetic contactor ； Magnetic circuit analysis ； Mathematical model ； Initial phase angle ； Energy distribution

國際替代計量

交流接觸器於閉合過程之輸入電能分佈與電源初始相位角關連分析

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