Reduced order linear quadratic regulator controller for voltage multiplier cells integrated boost converter

Mangaiyarkarasi Palaveashem; Kavitha Anbukumar

Reduced order linear quadratic regulator controller for voltage multiplier cells integrated boost converter

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Author(s): Mangaiyarkarasi Palaveashem ¹ and Kavitha Anbukumar ¹
- Affiliations: 1: Department of EEE, College of Engineering, Guindy, Anna University, Chennai 25, India
Source: Volume 10, Issue 6, November 2016, p. 536 – 548
DOI: 10.1049/iet-cds.2016.0228 , Print ISSN 1751-858X, Online ISSN 1751-8598

Received 18/06/2016, Accepted 12/09/2016, Revised 01/09/2016, Published 01/11/2016

The recent development in high gain DC–DC converters motivates its application on renewable energy systems with low output voltage such as photovoltaic cells resulting in the requirement of high voltage gain converters with improved static and dynamic characteristics. This study proposes an optimal reduced order linear quadratic regulator controller for a reduced order model of a voltage multiplier cell (VMC) integrated boost converter with two sensors for measuring the output voltage and the input inductor current. The dynamic performance of linear quadratic regulator controller over load, line and component perturbations are shown through extensive simulation studies on the reduced order model developed and the comparison is accomplished with conventional hysteresis current controller in order to disclose the best control technique in terms of dynamic response. The extensive analysis based on simulated results are verified exactly with a measured results in a 100 W prototype operating in continuous conduction mode VMC integrated boost converter controlled using DSPIC30F4011 processor. The control technique proposed computes error coefficients with less computation time, guarantees excellent system stability and offers improved dynamic characteristics for VMC integrated boost converter with reduced number of sensors.

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