摘要
当前应用于电力行业的整流装置大多以增设辅助电路等形式,来降低输出电压的纹波系数,但未考虑对电网清洁度的影响。新型整流装置以变压器为本体,通过绕组电磁特性,利用装置自身结构使电网侧输入电流波形标准化和正弦化,改善输入电流与输出电压波形品质。从输出侧角度出发,分析新型整流装置的谐波抑制原理,直流侧仅存在12k次谐波,同时采用长短距绕组排布,大幅减小17次、19次等高次谐波。对变压器内部气隙磁场进行数学推导,结果证明变压器内部气隙形成了呈正弦化平移运动的脉动磁场。仿真结果表明,电网输入端电流与输出端电压均小于国家行业标准5%,具备一定的工程应用价值。
The rectification devices currently used in the power industry mostly reduce the ripple factor of the output voltage by adding auxiliary circuits,but do not consider the impact on the cleanliness of the power grid.This new rectification device is based on a transformer and utilizes the electromagnetic characteristics of the winding to standardize and sinusoidatethe input current waveform on the grid side through its own structure,improving the quality of the input current and output voltage waveforms.From the perspective of the output side,the harmonic suppression principle of the new rectifier device is analyzed.There are only 12k harmonics on the DC side,and the long and short distance winding arrangement is adopted to significantly reduce the 17th,19thand other high-order harmonics.The mathematical derivation of the magnetic field in the air gap inside the transformer proves that a pulsating magnetic field with sinusoidal translational motion is formed in the air gap inside the transformer.The simulation results show that the input current and output voltage of the power grid are both less than 5%of the national industry standard,which has certain engineering application value.
作者
成宇翔
张书恒
陈帅
吴紫阳
王子熙
CHENG Yuxiang;ZHANG Shuheng;CHEN Shuai;WU Ziyang;WANG Zixi(College of Information and Control Engineering,Liaoning Petrochemical University,Fushun 113000,China)
出处
《黑龙江电力》
2025年第4期291-297,共7页
Heilongjiang Electric Power
基金
辽宁省教育厅科学研究项目(项目编号:LJKZ0398)
辽宁石油化工大学大学生创新创业基金项目(项目编号:S202410148050)。
关键词
整流装置
气隙磁场
有限元
绕组设计
rectifier device
air gap magnetic field
finite element method
winding design
