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OPTIMAL CONTROL FOR THREE-PHASE POWER CONVERTERS SVPWM BASED ON LINEAR QUADRATIC REGULATOR

Dr. Ir. Lie Jasa, MT, LIE JASA (2012) OPTIMAL CONTROL FOR THREE-PHASE POWER CONVERTERS SVPWM BASED ON LINEAR QUADRATIC REGULATOR. International Journal of Academic Research, 5. ISSN 2075-4124

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Abstract

A three-phase power converter space vector PWM with current regulation using PI controller typically produces low harmonics distortion and unity power factor with the load change. Nonetheless, its time response of the output voltage is not optimal. This paper proposes an improvement to the conventional three-phase power converter space vector PWM using an optimal control based on the linear quadratic regulator and integral action improve the output voltage responses. In this paper, the power converter is determined using a linearized statespace model and the parameters of plant model can be found online using the recursive least square algorithm. the feedback and feed forward gains can be obtained based on the linear quadratic regulator to minimize the performance index. In this setting, an integral action is required to eliminate the steady-state error. Using a sinusoidal input, the simulation results demonstrate that, at steady state, the proposed method results in the overshoot of time response of the output voltage of 1.67% with the settling time of 0.05 sec for load changes from full load to half load.

Item Type: Article
Uncontrolled Keywords: optimal control, power converter, pulse width modulation, linear quadratic
Subjects: L Education > L Education (General)
Divisions: Faculty of Law, Arts and Social Sciences > School of Education
Depositing User: Mr. Repository Admin
Date Deposited: 07 Jun 2016 21:58
Last Modified: 21 Jun 2016 05:58
URI: http://erepo.unud.ac.id/id/eprint/5391

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