摘要
为进一步解决单相逆变器传统双闭环算法负载适应能力不强,瞬态电压波动率较大等问题,从理论上详细推导了造成此现象的本质原因,并提出一种逐脉冲的控制算法。逐脉冲算法将传统幅值反馈压缩至足够小的一个区间进行,与传统整周期有效值给定的方式相比,其给定值为各个小区间所对应的有效值,即区间有效值,反馈值为采样点的离散有效值,理论研究表明其可兼顾幅值和瞬时值反馈的优点,提高逆变装置性能。为验证该算法的正确性,在Matlab/Simulink上设计仿真实验,实验波形与理论分析高度一致,结果显示逆变器静动态性能有较大提高,验证了逐脉冲算法的正确性和有效性,表明其具有较广阔的应用前景。
The single⁃phase inverter is of poor load adaptability and large transient voltage fluctuations when using dual closed⁃loop algorithm,so the essential causes are theoretically deduced in detail and a pulse⁃by⁃pulse control algorithm is proposed.In terms of the pulse⁃by⁃pulse algorithm,the traditional amplitude value is fed back and compressed to an interval small enough.In comparison with the traditional method of whole cycle effective value assignment,the assigned value is the effective value corresponding to each small interval,that is,the interval effective value.The value fed back is the discrete effective value of the sampling point.Theoretical research shows that the algorithm takes account of the advantages of amplitude value and instantaneous value feedback and can improve the performance of the inverter device.In order to verify the correctness of the algorithm,a simulation experiment was designed on Matlab/Simulink.The experimental results show that the waveform is highly consistent with the theoretical analysis,and the static and dynamic performance of the inverter is greatly improved,which verifies the correctness and effectiveness of the pulse⁃by⁃pulse algorithm.Therefore,the algorithm has a broad application prospect.
作者
吕旭旭
邵天章
邢娅浪
谷志锋
LV Xuxu;SHAO Tianzhang;XING Yalang;GU Zhifeng(Shijiazhuang Campus of Army Engineering University of PLA,Shijiazhuang 050003,China;Shijiazhuang Railway University,Shijiazhuang 050043,China)
出处
《现代电子技术》
2021年第3期140-144,共5页
Modern Electronics Technique
基金
国家自然科学基金(51407196)
河北省自然科学基金(E2017506007)。
关键词
逐脉冲控制
有效值反馈
瞬时值反馈
区间有效值
控制系统分析
仿真验证
pulse⁃by⁃pulse control
effective value feedback
instantaneous value feedback
interval effective value
control system analysis
simulation verification
作者简介
吕旭旭(1995—),男,硕士研究生,研究方向为电力电子技术;邵天章(1967—),男,副教授,硕士生导师,研究方向为微特电机及测控技术、电力电子技术;邢娅浪(1978—),女,博士,讲师,研究方向为高原地区电站监测技术、电力电子技术。
