Grid Voltage Sensorless Control Strategy of Single-phase PWM Rectifiers With Model Reference Adaptive System

被引：0
|
作者：
Liu B. [1 ]
Feng X. [1 ]
Deng R. [1 ]
Xia W. [1 ]
Song W. [1 ]
机构：
[1] School of Electrical Engineering, Southwest Jiaotong University, Chengdu, 610031, Sichuan Province
来源：
Zhongguo Dianji Gongcheng Xuebao/Proceedings of the Chinese Society of Electrical Engineering | 2019年 / 39卷 / 20期
关键词：
Direct power control; Grid voltage estimation; Grid voltage sensorless; Inductance estimation; Model reference adaptive system (MRAS); Single-phase pulse width modulation (PWM) rectifiers;
D O I：
10.13334/j.0258-8013.pcsee.182187
中图分类号：
学科分类号：
摘要：
In order to realize gird voltage sensorless control, a grid voltage estimation method with model reference adaptive system (MRAS) for single-phase pulse width modulation (PWM) rectifiers was proposed. Firstly, according to the basic principle of MRAS, the mathematical expressions of active and reactive powers in reference model and adjustable model were modeled, then the amplitude, frequency and angle triangular function of the fundamental component in grid voltage can be estimated. With the combination of the gird voltage estimation method and direct power control scheme with power feedforward decoupling, the grid voltage sensorless control strategy with MRAS was presented. Secondly, in order to tackle the AC-side inductance sensitivity of the proposed scheme, an inductance on-line estimation method was presented. Simultaneously, a system parameter initialization method was given to solve the startup problem of control system. Finally, the proposed scheme was verified in computer simulations and experimental tests, the simulation and experimental results have verified the correctness and validity of the proposed scheme. © 2019 Chin. Soc. for Elec. Eng.
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页码：6065 / 6074
页数：9
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