Multifunction Transformer With Adjustable Magnetic Stage Based on Nanocomposite Semihard Magnets
Multifunction Transformer With Adjustable Magnetic Stage Based on Nanocomposite Semihard Magnets
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基于纳米复合半硬磁体的可调磁级多功能变压器
DOI：
10.1109/tie.2019.2921291
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发表时间：
2020
影响因子：
7.7
通讯作者：
Li Hongmei
中科院分区：
文献类型：
--
作者：
Chen Zhiwei;Li Xiang;Li Hongmei
为了提高供电效率和可靠性，统筹考虑电能变换和电能质量控制，本文提出了一种基于半硬磁体NdFeB的新型多功能本征可调磁态变压器。首先，根据直流偏磁的形成机理和电感值的调节手段，设计了一种独特的单相变压器铁心结构，实现了变压器铁心在不同磁状态下的磁通调节。其次，利用NdFeB的导磁和励磁特性，实现了电磁铁铁心在电压变换、电感可调、直流偏置补偿等多种工作状态之间的磁态转换。最后制作了两台磁态可调的10kVA变压器。进行了直流偏置补偿和电感调节实验，验证了设计方案的可行性和正确性。
In order to improve the efficiency, reliability of power supply, and to give overall consideration to the power transformation and power quality control, a brand-new multifunction transformer with intrinsic adjustable magnetic state is put forward based on semihard magnets NdFeB in this paper. First, according to the formation mechanism of dc bias and the regulation means of inductance value, the peculiar core structure of a single-phase transformer is designed so as to realize the flux adjustment of transformer core under different magnetic states. Second, taking advantage of the magnetic conductive and excitation characteristics of NdFeB, the magnetic state conversion of electromagnet core between several kinds of working conditions can be achieved, such as voltage transformation, adjustable inductance, and dc bias compensation. Finally, two 10 kVA transformers with adjustable magnetic state are manufactured. The experiments of dc bias compensation and inductance regulation are carried out, which validates the feasibility and correctness of the design scheme.