摘要
传统全桥单相脉宽调制(PWM)整流器的输出电压中含有大量的二次纹波,而电容储能型单相PWM整流器是在交流侧增加了一个储能电容用以存储输入功率中的二倍频分量,从而可以减小输出电压中的二次纹波。在此以电容储能型单相PWM整流器为研究对象,对其有源滤波原理进行了分析并提出了模型预测控制策略,建立了预测模型,设计了目标函数,根据预测模型及目标函数在线选取最合适的开关状态来达到抑制二次纹波的目的。实验结果表明,与传统全桥PWM整流器相比,输出电压中的二次纹波减小了15倍左右。
The output voltage of the traditional single-phase full bridge pulse width modulation(PWM)rectifier contains a considerable amount of secondary ripple,while the capacitive energy storage single-phase PWM rectifier adds a storage capacitor on the AC side to store the double frequency component of the input power,so as to reduce the secondary ripple in the output voltage.The capacitive energy storage single-phase PWM rectifier is taken as the research object.The active filtering principle is analyzed and the model prediction control strategy is proposed.The prediction model is established and the objective function is designed.According to the prediction model and objective function,the most suitable switching state is selected online to reduce the secondary ripple.The experimental results show that the secondary ripple in the output voltage is reduced by about 15 times compared with the traditional full bridge PWM rectifier.
作者
张健彬
康龙云
胡竞文
冼武
ZHANG Jian-bin;KANG Long-yun;HU Jing-wen;XIAN Wu(South China University of Technology,Guangzhou 510640,China;不详)
出处
《电力电子技术》
CSCD
北大核心
2020年第5期105-107,共3页
Power Electronics
基金
广东省科技发展专项基金(2017B010120001)。
关键词
整流器
二次纹波
模型预测控制
rectifier
secondary ripple
model prediction control
作者简介
张健彬(1996-),男,江西抚州人,硕士研究生,研究方向为电力电子变换器及其控制技术。
