基于准Z源模块化多电平换流器的模型预测控制

doi:10.3969/j.issn.1008-0198.2023.01.002

湖南电力 ›› 2023, Vol. 43 ›› Issue (1): 8-16.doi: 10.3969/j.issn.1008-0198.2023.01.002

基于准Z源模块化多电平换流器的模型预测控制

张阳¹, 罗超逵¹, 易文静¹, 程谆²

1.湖南工业大学,湖南株洲 412007;
2.湖南铁道职业技术学院,湖南株洲 412001

出版日期:2023-02-25 发布日期:2023-03-03
作者简介:张阳(1988),男,山东潍坊人,副教授,硕士生导师,主要研究方向为电力电子与新能源发电技术。罗超逵(1998),男,湖南邵阳人,在读硕士研究生,主要研究方向为电力电子与新能源发电技术。易文静(1998),女,重庆人,在读硕士研究生,主要研究方向为电力电子与新能源发电技术。程谆(1988),女,湖南宁乡人,硕士,讲师,通信作者,主要研究方向为现代电力电子技术与系统。
基金资助:
国家自然科学基金(51907061);湖南省教育厅科学研究项目(21C1296)

Model Predictive Control Based on Quasi-Z Source Modular Multilevel Converter

ZHANG Yang¹, LUO Chaokui¹, YI Wenjing¹, CHENG Zhun²

1. Hunan University of Technology, Zhuzhou 412007, China;
2. Hunan Railway Professional Technology College, Zhuzhou 412001, China

Online:2023-02-25 Published:2023-03-03

摘要/Abstract

摘要： 针对准Z源模块化多电平换流器在使用传统载波叠层调制时,控制结构复杂、直流链电压的波动较大、交流输出电能质量较差及动态响应速度缓慢的问题,提出一种适用于准Z 源模块化多电平换流器的模型预测控制策略。根据直流链电压构建输出电压电平的控制集合,预测输出电流,无需每个子模块设置一个脉宽调制发生器;同时,分析了准Z源网络电感电流、电容电压的数学模型,设计了电感电流、电容电压与交流输出电流的代价函数,以此抑制直流链电压的波动、改善输出电压的电能质量。在MATLAB/SIMULINK仿真平台上验证了所提控制方式的有效性和可行性。

关键词: 准Z源逆变器, 模块化多电平换流器, 模型预测控制

Abstract: In order to solve the problems of complex control structure, large fluctuation of DC-link voltage, poor AC output power quality and slow dynamic response when traditional carrier stack phase-disposition pulse width modulation (PD-PWM) is used in quasi-Z source modular multilevel converter (qZ-MMC), a model predictive control (MPC) for qZ-MMC is proposed in this paper. The control set of output voltage level is constructed according to the DC-link voltage, so as to predict the output current, without setting a PWM generator for each sub-module. At the same time, the mathematical model of inductor current and capacitor voltage of quasi-Z source network is analyzed, and the cost function of inductor current, capacitor voltage and AC output current is designed, so as to suppress the fluctuation of DC-link voltage and improve the power quality of output voltage. The effectiveness and feasibility of the proposed control method are verified on MATLAB/SIMULINK simulation platform.

Key words: quasi-Z source inverter, modular multilevel converter, model predictive control

中图分类号:

TM464

张阳, 罗超逵, 易文静, 程谆. 基于准Z源模块化多电平换流器的模型预测控制[J]. 湖南电力, 2023, 43(1): 8-16.

ZHANG Yang, LUO Chaokui, YI Wenjing, CHENG Zhun. Model Predictive Control Based on Quasi-Z Source Modular Multilevel Converter[J]. Hunan Electric Power, 2023, 43(1): 8-16.

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基于准Z源模块化多电平换流器的模型预测控制

Model Predictive Control Based on Quasi-Z Source Modular Multilevel Converter

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