摘要
针对电力电子设备使用有限集模型预测控制器(MPC)时存在的可变开关频率问题,设计了一种基于周期控制方法的有限集MPC开关频率调节策略。新型开关频率调节策略将在有限集MPC中设置特定算法。其中新型算法中采用了对门极驱动信号的上升沿和下降沿周期测量和跟踪控制以产生类调制的输出频谱,同时在成本函数中设计相关项以实现开关频率调节。开关频率调节算法易于设计和实现,可在不显著增加计算负担的情况下使有限集MPC产生较为规则的频谱。以三相两电平逆变器系统为测试对象开展了对比仿真和实验,仿真和实验结果验证了新型开关频率调节方案可有效地调节有限集MPC的开关频率,并提高逆变器的输出电能质量。
Aiming at the variable switching frequency problem of power electronics equipment using finite set model predictive controller(MPC),a finite set MPC switching frequency regulation strategy based on the period control method was designed.The new switching frequency regulation strategy could set a specific algorithm in the finite control set MPC.The new algorithm adopted the period measurement and tracking control of the rising and falling edges of the gate driving signal to generate a modulation-like output spectrum.At the same time,related items were designed in the cost function to achieve the switching frequency adjustment.The switching frequency adjustment algorithm is easy to design and implement,and will cause the finite control set MPC to generate a more regular spectrum without significantly increasing the computational burden.The comparative simulation and experiment were carried out with the three-phase two-level inverter system as the test object.The simulation and experimental results verify that the new switching frequency regulation scheme can effectively adjust the switching frequency of the finite control set MPC and improve the output power quality of the inverter.
作者
袁武
曾山
YUAN Wu;ZENG Shan(Quality Management and Evaluation Division,Wuhan Technical College of Communications,Wuhan 430064,Hubei,China;School of Mathematics&Computer Science,Wuhan Polytechnic University,Wuhan 430023,Hubei,China)
出处
《电气传动》
2021年第12期16-22,46,共8页
Electric Drive
基金
国家自然科学基金项目(U1833119)。
关键词
有限控制集
模型预测控制
固定开关频率
脉宽调制
finite control set
model predictive control(MPC)
fixed switching frequency
pulse width modulation
