基于混合ANPC逆变器的永磁电机解耦预测控制策略  

Decoupling Predictive Control Strategy for PMSM Fed by Hybrid ANPC Inverter

作　　者：徐帅[1] 孙振耀 任冠州 姚春醒 池茂儒[1] 马光同[1] XU Shuai;SUN Zhenyao;REN Guanzhou;YAO Chunxing;CHI Maoru;MA Guangtong(State Key Laboratory of Rail Transit Vehicle System(Southwest Jiaotong University),Chengdu 610031,Sichuan Province,China)

机构地区：[1]轨道交通运载系统全国重点实验室(西南交通大学),四川省成都市610031

出　　处：《中国电机工程学报》2023年第15期6075-6085,共11页Proceedings of the CSEE

基　　金：国家自然科学基金项目(52107059,U21A20168);四川省自然科学基金项目(2022NSFSC1898)。

摘　　要：永磁电机具有效率高、启动快、过载能力强及噪声小等优点,已被成功应用于大功率交流传动系统。为解决传统Si基变流器开关频率低造成电机转矩动态响应慢、转矩脉动大的问题,文中结合SiC器件耐高温和开关频率高的特点,将Si/SiC协同的三电平有源中点钳位型(active neutral-point-clamped,ANPC)逆变器混合拓扑引入到永磁电机驱动系统。首先研究Si/SiC混合ANPC逆变器拓扑的运行原理与换流模式,分析不同换流模式下的损耗分布规律及调制策略。结合模型预测控制技术的多目标和多约束特性,提出基于混合ANPC逆变器的永磁电机高解耦预测控制策略,以实现Si/SiC混合拓扑中Si器件的低频运行和SiC器件的高频运行。稳态和暂态实验结果证实了所提控制策略的可行性和有效性。Permanent magnet motors offer high efficiency,fast start,strong overload capacity and low noise.Successfully applied to high-power AC drive systems,they face problems of slow dynamic torque response and large torque ripple from traditional Si converter’s low switching frequencies.Leveraging silicon carbon(SiC)devices’high temperature resistance and high switching frequencies,this paper introduces a Si/SiC three-level active neutral-point-clamped(ANPC)inverter into permanent magnet motor drive systems.First by investigating the Si/SiC hybrid ANPC inverter’s operating principle and commutation modes,we analyze loss distribution and modulation strategies under different commutation modes.We propose a high-and low-frequency decoupling predictive control strategy for the permanent magnet motor fed by the Si/SiC hybrid ANPC inverter based on model predictive control's multi-objective and multi-constraint characteristics.This achieves Si and SiC device low-and high-frequency operation,respectively.Steady state and transient experimental results verify the feasibility and effectiveness of the proposed control strategy.

关 键 词：有源中点钳位型逆变器 永磁电机 解耦控制 模型预测控制 碳化硅 

分 类 号：TM341[电气工程—电机]