Improved direct power control of a grid-connected voltage source converter during network unbalance

Peng ZHOU; Wei ZHANG; Yi-kang HE; Rong ZENG

doi:10.1631/jzus.C0910702

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Improved direct power control of a grid-connected voltage source converter during network unbalance

电子技术 | Updated：2022-08-31

- Improved direct power control of a grid-connected voltage source converter during network unbalance
- Improved direct power control of a grid-connected voltage source converter during network unbalance
- 信息与电子工程前沿（英文） 2010年11卷第10期页码：817-823
- Affiliations：
  
  School of Electrical Engineering, Zhejiang University, Hangzhou 310027, China
- Author bio：
  
  E-mail:beatles851@163.com
  ‡Corresponding Author
- Funds：
- DOI：10.1631/jzus.C0910702
  中图分类号：
- 收稿：2009-11-14，
  
  修回：2010-09-03，
  
  录用：2010-01-29，
  
  纸质出版：2010-10
- Accepted：
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Improved direct power control of a grid-connected voltage source converter during network unbalance[J]. 信息与电子工程前沿（英文）, 2010,11(10):817-823.

Peng ZHOU, Wei ZHANG, Yi-kang HE, et al. Improved direct power control of a grid-connected voltage source converter during network unbalance[J]. Frontiers of Information Technology & Electronic Engineering, 2010, 11(10): 817-823.
Improved direct power control of a grid-connected voltage source converter during network unbalance[J]. 信息与电子工程前沿（英文）, 2010,11(10):817-823. DOI： 10.1631/jzus.C0910702.

Peng ZHOU, Wei ZHANG, Yi-kang HE, et al. Improved direct power control of a grid-connected voltage source converter during network unbalance[J]. Frontiers of Information Technology & Electronic Engineering, 2010, 11(10): 817-823. DOI： 10.1631/jzus.C0910702.

摘要

Abstract

This paper deals with an improved direct power control (DPC) strategy for the pulse width modulation (PWM) voltage source converter (VSC) under unbalanced grid voltage conditions. In order to provide enhanced control performance for the VSC

the resonant controllers tuned at the double grid frequency are applied in the DPC design to eliminate the power pulsations and dc link voltage ripples produced by the transient unbalanced grid faults. In this way

the output power and dc link voltage of the VSC can be directly regulated without positive and negative sequential decomposition. As a result

and as has been verified by experiment

the proposed method can provide fast dynamic response with easy implementation.

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