TPFS逆变器驱动PMSM双矢量模型预测控制  

Double-vectors Model Predictive Control for PMSM Driven by TPFS Inverter

作　　者：文辉 曹洪文 郭磊磊 WEN Hui;CAO Hong-wen;GUO Lei-lei(Power Supply Center of National Energy Shendong Coal Group Co.,Ltd.,Yulin 719315,China)

机构地区：[1]国能神东煤炭集团有限责任公司供电中心,陕西榆林719315 [2]内蒙古仲泰能源有限公司,内蒙古鄂尔多斯017000 [3]郑州轻工业大学电气信息工程学院,河南郑州450002

出　　处：《电力电子技术》2023年第2期34-36,55,共4页Power Electronics

基　　金：国家自然科学基金(51707176)。

摘　　要：当三相六开关逆变器出现单管开路故障时,可将其重构为三相四开关(TPFS)结构,从而实现容错运行。针对常规基于TPFS逆变器驱动的永磁同步电机(PMSM)模型预测控制,每个周期仅使用一个电压矢量,导致电流谐波较大的问题,提出了一种基于TPFS逆变器驱动的PMSM双矢量模型预测控制方法,以降低电流谐波。所提方法根据TPFS逆变器的4个基本电压矢量构造了4个虚拟双矢量,并假设每个基本电压矢量的作用时间与其价值函数成反比。由于所构造的虚拟双矢量的相位和幅值可调,当在每个控制周期内通过对比并选择1个最优虚拟双矢量用于控制TPFS逆变器时,PMSM的电流谐波得到显著降低。对比实验研究验证了所提方法的有效性。When the three-phase six-switch inverter has a single switch open circuit fault,it can be reconstructed to a three-phase four-switch(TPFS) structure,so as to achieve fault tolerant operation.Aiming at the problem that the conventional model predictive control for permanent magnet synchronous motor(PMSM) driven by TPFS inverter uses only one voltage vector in each cycle,resulting in large current harmonics,a double-vectors model predictive control method for PMSM driven by TPFS inverter is proposed to reduce the current harmonics.The proposed method constructs four virtual double-vectors based on the four basic voltage vectors of TPFS inverter,and assumes that the action time of each basic voltage vector is inversely proportional to its cost function.As the phase and amplitude of the constructed virtual double-vectors are adjustable,when comparing and selecting an optimal virtual double-vectors to control the TPFS inverter in each control cycle,the current harmonics of PMSM can be significantly reduced.Comparative experimental studies verify the effectiveness of the proposed method.

关 键 词：逆变器 永磁同步电机 模型预测控制 

分 类 号：TM464[电气工程—电器]