电气工程学报 ›› 2021, Vol. 16 ›› Issue (1): 127-133.doi: 10.11985/2021.01.016

• 新能源发电与电能存储 • 上一篇    下一篇

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一种基于矩阵变换器的海上风力机中压电能变换系统 *

刘鑫1(), 原熙博2(), 韩东旭1, 赵凯1, 由蕤1()   

  1. 1.青岛大学电气工程学院 青岛 266071
    2.布里斯托大学电气与电子工程系 布里斯托 BS8 1UB 英国
  • 收稿日期:2020-08-03 修回日期:2021-01-25 出版日期:2021-03-25 发布日期:2021-03-25
  • 作者简介:刘鑫,男,1993年生,硕士研究生。主要研究方向为风力发电技术。E-mail:1602450383@qq.com
    原熙博,男,1982年生,博士,教授。主要研究方向为电力电子、风力发电、大功率多电平变换器控制等。E-mail:xibo.yuan@bristol.ac.uk
    由蕤,男,1984年生,博士,副教授。主要研究方向分布式发电与微电网。E-mail:yourui1984@163.com
  • 基金资助:
    * 山东省重点研发计划(重大科技创新工程)(2019JZZY010902);电力系统国家重点实验室资助课题资助项目(SKLD20M18)

A Medium Voltage Power Conversion System for Offshore Wind Turbine Based on Matrix Converter

LIU Xin1(), YUAN Xibo2(), HAN Dongxu1, ZHAO Kai1, YOU Rui1()   

  1. 1. College of Electrical Engineering, Qingdao University, Qingdao 266071
    2. Department of Electrical and Electronic Engineering, University of Bristol, Bristol BS8 1UB UK
  • Received:2020-08-03 Revised:2021-01-25 Online:2021-03-25 Published:2021-03-25

摘要:

矩阵变换器是一种新型交-交直接功率变换器,不需要中间直流环节,能够产生正弦的输入输出电流,并且输入功率因数和输出频率可调,具有能量双向流动特性,因此矩阵变换器在未来中压大功率海上风电中具有良好的应用前景。研究了一种基于三相-单相矩阵变换器的模块化变换器在海上风电中的应用,并对其控制策略进行了研究,该变换器随着级联单元数的不同可以输出任意多电平波形,相比于传统的级联H桥变流器,它没有中间的直流电容,所以显著提高了变流器的功率密度。最后利用Matlab/Simulink搭建了利用该变换器的永磁直驱型风机仿真模型,并对其拓扑和控制策略的有效性进行了验证。

关键词: 矩阵变换器, 多电平变换器, 风力发电

Abstract:

The matrix converter is a new type of AC-AC direct power converter. It can generate sinusoidal input and output current without an intermediate DC link. Moreover, the input power factor and output frequency are adjustable, and it has the characteristics of energy bidirectional flow. Therefore, the matrix converter has a good application prospect in medium voltage and high-power offshore wind power in the future. In this paper, a modular converter based on three phase to single phase matrix converter and a control strategy are studied to meet the application of offshore wind power, the converter can output arbitrary multilevel waveforms with different number of cascaded units, compared with the traditional cascaded H-bridge converter, it has no intermediate DC capacitor, so it significantly improves the power density of the converter. Finally, the simulation model of permanent magnet direct drive wind turbine using the converter is built in Matlab/Simulink, and the validity of the proposed topology and control strategy is verified.

Key words: Matrix converter, multilevel converter, wind power system

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