Control of a three phase boost rectifier under unbalanced grid conditions without grid voltage sensors

被引：0

作者：

Mukherjee, Subhajyoti ^{[1
]}

Chowdhury, Vikram Roy ^{[1
]}

Kimball, Jonathan ^{[1
]}

机构：

[1] Missouri Univ Sci & Technol, Dept Elect & Comp Engn, Rolla, MO 65409 USA

来源：

2018 IEEE ENERGY CONVERSION CONGRESS AND EXPOSITION (ECCE) | 2018年

关键词：

Grid connected converter; grid unbalance; positive and negative sequence; voltage estimation; DIRECT POWER-CONTROL; PWM CONVERTER;

D O I：

暂无

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：

This paper presents a method for estimating the positive and negative sequence grid voltage under unbalanced grid conditions using simple algebraic and trigonometric identities without dedicated grid voltage sensors in three phase grid connected boost rectifier converter system. The estimated voltages are then used to control the positive and negative sequence currents of the boost rectifier. The estimation method is based on the positive and negative sequence active and reactive power delivered by the converter to the grid. In addition to the estimation of the positive and negative sequence grid voltage, the proposed method also generates an estimate of the frequency information of the grid similar to a conventional PLL structure. Detailed theory and results confirm the feasibility of the proposed scheme.

引用

页码：1521 / 1527

页数：7

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