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Title: A transformless electric spring with decoupled real and reactive power control
Authors: Qi, Yang
Yang, Tianbo
Tang, Yi
Potti, Krishna Raj Ramachandran
Rajashekara, Kaushik
Keywords: Microgrids
Frequency Regulation
Engineering::Electrical and electronic engineering
Issue Date: 2019
Source: Qi, Y., Yang, T., Tang, Y., Potti, K. R. R., & Rajashekara, K. (2019). A transformless electric spring with decoupled real and reactive power control. 2019 IEEE 4th International Future Energy Electronics Conference and ECCE Asia.
Abstract: The electric spring has emerged as a promising technique to stabilize electrical grids with high penetration of renewable energy sources. In response to the grid frequency deviation, electric springs can flexibly regulate the noncritical load power. However, the previous versions of electric springs either suffer from the coupling effect between real and reactive powers, or require associated energy storage systems, or need an extra low-frequency transformer for the isolation purpose. To overcome these shortcomings, a transformless electric spring and its associated control strategy are proposed in this paper. The proposed electric spring can independently regulate the real and reactive power without using batteries for maintaining the DC-link voltage or handling power flow. Finally, real time hardware-in-loop (HIL) simulation results are provided for verification.
Rights: © 2019 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works.
Fulltext Permission: open
Fulltext Availability: With Fulltext
Appears in Collections:EEE Conference Papers
ERI@N Conference Papers

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