Analysis and design of PI plus repetitive control for grid-side converters of direct-drive wind power systems considering the effect of hardware sampling circuits

• Main Authors: Lyu, Mingcheng, Hong, Lerong, Xu, Qianming, Liao, Wu, Wu, Gongping, Huang, Shoudao, Peng, Yelun, Long, Xin
• Other Authors: School of Electrical and Electronic Engineering
• Format: Article
• Language: English
• Published: 2021
• Subjects: Engineering::Electrical and electronic engineering; Grid-side Converter; Power Quality
• Online Access: https://hdl.handle.net/10356/145677
• Institution: Nanyang Technological University

In inverters based on a single proportional-integral (PI) or deadbeat (DB) controller, an inherent resonance peak may emerge near their current loop cut-off frequency, which results in harmonic amplification or even resonance. Additionally, inappropriate filter circuits implemented in sampling circu...