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Analysis of an H∞ Robust Control for a Three-Phase Voltage Source Inverter

School of Electronic Information and Electrical Engineering (SEIEE), Shanghai Jiao Tong University, Shanghai 200240, China
Author to whom correspondence should be addressed.
Inventions 2019, 4(1), 18;
Received: 30 December 2018 / Revised: 20 February 2019 / Accepted: 27 February 2019 / Published: 12 March 2019
Recently, power quality improvement has gained a lot of attention due to the rapidly increasing use of power electronics equipment. Several control strategies for DC/AC Voltage Source Inverters (VSI) have been developed to obtain good quality output with low harmonic distortion. This paper proposes a robust control scheme to improve the power quality of a three-phase DC/AC VSI. The control scheme includes an outer voltage loop and an inner current loop, with both controllers designed by the standard H∞ robust control technique. The system with the proposed controller has a low total harmonic distortion (THD) and improved power quality of output voltage in the presence of linear and non-linear loads. The simulation is carried out in MATLAB/Simulink environment, and the results of the proposed control scheme are compared with the performance of dead-beat (DB) predictive control and conventional proportional integral (PI) control. It is observed from the results that the proposed control scheme outperforms other control schemes in terms of the THD level, having a better steady-state and transient performance. View Full-Text
Keywords: power quality; robust control; predictive control; DC/AC; inverters power quality; robust control; predictive control; DC/AC; inverters
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Rasool, M.A.U.; Khan, M.M.; Ahmed, Z.; Saeed, M.A. Analysis of an H∞ Robust Control for a Three-Phase Voltage Source Inverter. Inventions 2019, 4, 18.

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