Performance of SMES system with non‐linear dynamic evolution control approach for pulsed power load compensation. Issue 10 (25th March 2020)

• Record Type: Journal Article
• Authors: Penthia, Trilochan; Panda, Anup Kumar; Patnaik, Nishant; Mohanty, Pratap Ranjan
• Is Part Of: IET generation, transmission & distribution. Volume 14:Issue 10(2020)
• Page Start: 1872
• Page End: 1881
• Publication Date: 2020-03-25
• Subjects: compensation -- DC‐DC power convertors -- superconducting magnet energy storage -- PI control -- nonlinear control systems -- voltage‐source convertors -- PWM invertors -- nonlinear dynamical systems -- pulsed power supplies; SMES system -- nonlinear dynamic evolution control approach -- pulsed power load compensation -- magnetic energy storage system -- efficient pulsed power compensators -- load fluctuations -- voltage source inverter -- bi‐directional DC–DC converter -- NDEC control approach -- proportional–integral controller -- effective energy exchange -- system dynamics -- load uncertainties -- NDEC strategy -- source current -- superconducting magnetic energy storage system -- three‐phase compensating current -- DC‐link voltage -- VSI -- PI controller -- traditional pulse‐width‐modulation control strategy -- zero‐error state -- detrimental high rating stress -- Matlab simulation; Electric power production -- Periodicals; Electric power transmission -- Periodicals; Electric power distribution -- Periodicals; 621.3105
• DOI: 10.1049/iet-gtd.2019.1880
• Languages: English
• ISSNs: 1751-8687

Abstract

Abstract : Superconducting magnetic energy storage (SMES) system is one of the efficient pulsed power compensators. Its response to the load fluctuations is faster and competent. This study proposes a non‐linear dynamic evolution control (NDEC) approach for SMES system. The control approach is implemented to regulate the error of three‐phase compensating current and DC‐link voltage. The control functions required for voltage source inverter (VSI) and bi‐directional DC–DC converter of the SMES system are derived using the NDEC control approach. A proportional–integral (PI) controller is replaced by the NDEC in the inner loop of a traditional pulse‐width‐modulation control strategy of VSI for the quick response and effective energy exchange. The elementary idea of implementing NDEC is to govern the system dynamics by maintaining a zero‐error state irrespective of load uncertainties quickly. Detrimental high rating stress on the system due to pulsed power load is substantially reduced with the proposed NDEC strategy. Source current is maintained almost balanced and harmonic‐free in order to ensure a quality and reliable supply to surrounding loads. The variation in source current is drastically reduced from 260 to 6% using the proposed system. Moreover, a comparative study between PI and NDEC‐based control scheme is presented using MATLAB simulation and experimental results.