New switching technique for current control of grid converters for wind power systems

被引：2
|
作者：
Amer, Mohamed R. [1 ]
Mahgoub, Osama A. [1 ]
机构：
[1] Cairo Univ, Fac Engn, Giza 12613, Egypt
来源：
SUSTAINABLE ENERGY GRIDS & NETWORKS | 2017年 / 9卷
关键词：
Grid side converter (GSC); Hysteresis switching technique; Doubly fed induction generator (DFIG); HYSTERESIS CURRENT CONTROL; INVERTERS;
D O I：
10.1016/j.segan.2016.11.001
中图分类号：
TE [石油、天然气工业]; TK [能源与动力工程];
学科分类号：
0807 ; 0820 ;
摘要：
A novel modification is applied to the hysteresis band (HB) modulation technique for direct current control in Grid side converters (GSC). This method employs a pair of hysteresis bands (a positive one and a negative one) and changes these bands according to the conduction times of the inverter switches. The rate of change of generated current is dependent on two factors: the instantaneous grid voltage and the conduction times of the inverter switches. The objective of changing the hysteresis bands is varying the switching frequency to reduce the ripple produced in grid currents. The proposed method is analyzed and tested in switching a voltage source grid connected converter applied in wind power systems. The matlab based simulations and experimental results validate efficacy of the new switching modulation method in decreasing the current ripple, switching losses, and Total harmonic distortion (THD) of Grid current. (C) 2016 Elsevier Ltd. All rights reserved.
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页码：1 / 12
页数：12
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