基于差值功率的高频磁芯损耗测量方法及装置

发布时间：2018-08-15 18:30

【摘要】：现有磁芯损耗的各种电气测量方法主要是基于测量绝对功率来获得磁元件的磁芯损耗,同时也存在各自的局限。提出了一种高频磁元件磁芯损耗的测量新方法——差值功率测量法,通过测量测试电路输入功率的增量差值来获得给定工况下磁元件的磁芯损耗。以全桥DC/AC逆变电路作为励磁源和测试电路,采用DSP数字控制技术并结合上位机软件,研制了基于差值功率测量法的自动测量装置,实现了对不同PWM励磁工况下的磁芯损耗的测量。最后通过定标量热计法对提出的测量方法和装置进行验证,验证了其可行性和准确性。
[Abstract]:All kinds of electrical measurement methods of core loss are mainly based on measuring absolute power to obtain core loss of magnetic elements, but also have their own limitations. In this paper, a new method of core loss measurement for high frequency magnetic components is proposed, which is called differential power measurement. The core loss of magnetic components under given working conditions is obtained by measuring the incremental difference of input power of the circuit. With full-bridge DC/AC inverter circuit as excitation source and test circuit, an automatic measuring device based on differential power measurement method is developed by using DSP digital control technology and host computer software. The core loss is measured under different excitation conditions of PWM. Finally, the feasibility and accuracy of the proposed method and apparatus are verified by scalar calorimeter.
【作者单位】：福建工程学院信息科学与工程学院;福州大学电气工程与自动化学院;
【基金】：国家自然科学基金项目(51277032) 福建省自然科学基金项目(2017J01470) 福建省教育厅科技项目(JAT160324) 福建工程学院科研基金项目(GY-Z160004)~~
【分类号】：TM46

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