Improved Control Method for Voltage Regulation and Harmonic Mitigation Using Electric Spring

Mahdi Shademan, Alireza Jalilian and Mehdi Savaghebi
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Mahdi Shademan: Department of Electrical Engineering, Iran University of Science and Technology, Tehran 16846-13114, Iran
Alireza Jalilian: Department of Electrical Engineering, Iran University of Science and Technology, Tehran 16846-13114, Iran
Mehdi Savaghebi: Electrical Engineering Section, Department of Mechanical and Electrical Engineering, University of Southern Denmark, DK-5230 Odense, Denmark

Sustainability, 2021, vol. 13, issue 8, 1-16

Abstract: An electric spring (ES) with series connection to non-critical loads (NCLs) is mainly known as a smart load (SL) technology that can compensate undervoltages and overvoltages. In this paper, an improved control method is presented for the electric spring to regulate the effective value of the critical load (CL) voltage to the nominal value and to compensate the harmonics of the critical load voltage caused by the grid side. The electric spring’s performance for simultaneous voltage magnitude regulation and harmonic distortion compensation is investigated through simulation studies. The results are compared with those of a conventional control scheme. It has been demonstrated that the electric spring, using the improved control system, reduces the amplitude deviation and distortion of critical load voltage.

Keywords: electric spring; harmonics compensation; power quality; renewable energy; smart load; voltage regulation (search for similar items in EconPapers)
JEL-codes: O13 Q Q0 Q2 Q3 Q5 Q56 (search for similar items in EconPapers)
Date: 2021
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (1)

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