中国电机工程学报Issue(22)：5842-5850,9.DOI:10.13334/j.0258-8013.pcsee.2015.22.019
单相PWM整流器改进无差拍电流预测控制方法
The Improved Deadbeat Predictive Current Control Method for Single-phase PWM Rectifiers
摘要
Abstract
Deadbeat current control of pulse width modulation (PWM) rectifiers can quickly and accurately track the given current signal. However, the influence of inductance parameters and control delay can result in AC current distortion, increasing current harmonics and even instability of the system. To solve the above problems, this paper proposed an improved deadbeat current algorithm, deduced the discrete transfer function of a single-phase PWM rectifier, and analyzed the influence of inductance parameter and sample time on control system’s stability and dynamic performance. Put the improved deadbeat current control method in the double-loop system, which can effectively reduce triple-frequency harmonics and total harmonic distortion (THD) of grid current and eliminate the current distortion. The entire system achieves to control the DC bus voltage precisely in outer DC bus voltage control. The simulation and experimental results prove the validity of the theoretical analysis and feasibility of the mentioned current control method.关键词
单相PWM整流器/无差拍电流控制/电感参数/控制延时/电流谐波Key words
single-phase pulse width modulation (PWM) rectifier/deadbeat current control/inductor parameter/control delay/current harmonic分类
信息技术与安全科学引用本文复制引用
杨立永,杨烁,张卫平,陈智刚,徐龙..单相PWM整流器改进无差拍电流预测控制方法[J].中国电机工程学报,2015,(22):5842-5850,9.基金项目
国家自然科学基金项目(51277004)。Project Supported by National Natural Science Foundation of China (51277004)． （51277004）
