电流预测无差拍在三相并网逆变器中研究

针对传统的无差拍控制器在控制上的延时,同时为进一步解决静态误差、抗干扰等问题,提出了一种预测电流无差拍功率解耦控制结合SVPWM调制的策略。新的无差拍控制器在电流内环控制上可以很好地解决三相电压型逆变器在并网运行时锁相问题。在PSIM软件下对三相并网逆变器进行建模,利用无差拍方法对输出电流跟踪与dq坐标系下电网电压定向对功率解耦,从而控制逆变器的输出功率。仿真和实验结果证实此方法在逆变器并网锁相时具有良好的效果。...

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Bibliographic Details
Published in电子技术应用 Vol. 42; no. 8; pp. 154 - 156
Main Author 陈荣 何松原
Format Journal Article
LanguageChinese
Published 江苏大学电气信息工程学院,江苏镇江212013%江苏大学电气信息工程学院,江苏镇江,212013 2016
盐城工学院电气学院,江苏盐城224051
Subjects
SVPWM
功率解耦
并网逆变器
无差拍
无差拍
decoupling control of power
SVPWM
功率解耦
deadbeat
并网逆变器
grid-connected inverter
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Summary:针对传统的无差拍控制器在控制上的延时,同时为进一步解决静态误差、抗干扰等问题,提出了一种预测电流无差拍功率解耦控制结合SVPWM调制的策略。新的无差拍控制器在电流内环控制上可以很好地解决三相电压型逆变器在并网运行时锁相问题。在PSIM软件下对三相并网逆变器进行建模,利用无差拍方法对输出电流跟踪与dq坐标系下电网电压定向对功率解耦,从而控制逆变器的输出功率。仿真和实验结果证实此方法在逆变器并网锁相时具有良好的效果。
Bibliography:A novel predictive current deadbeat decoupling control strategy based on SVPWM was adopted aiming at the delay of the conventional deadbeat controller in controlling and the problem that controller in decreasing static error and anti- interference. The new predictive current deadbeat could solve the problem of phase locked compared with traditional deadbeat controller in current loop. it is simulated tracting output current by the method of deadbeat and decoupling control of power under dq reference frame using gird voltage vector control in PSIM. The performance in phase locked of the control method are verified by simulation and ex-perimental results.
Chen Rong, He Songyuan （ 1.School of Electrical Engineering, Yancheng Institute of Technology, Yancheng 224051 , China ; 2.School of Electrical and Information Engineering,Jiangsu University,Zhenjiang 212013,China）
11-2305/TN
deadbeat; SVPWM; grid-connected inverter; decoupling control of power
ISSN:0258-7998
DOI:10.16157/j.issn.0258-7998.2016.08.038