Predictive current limiter for LQ based control of AC drives

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F49777513%3A23220%2F15%3A43926219" target="_blank" >RIV/49777513:23220/15:43926219 - isvavai.cz</a>

Výsledek na webu

—

DOI - Digital Object Identifier

—

Jazyk výsledku

angličtina

Název v původním jazyce

Predictive current limiter for LQ based control of AC drives

Popis výsledku v původním jazyce

Linear quadratic control (LQ) is a popular technique for design of control strategy. Its main advantage is the ability to optimize a quadratic cost function on a very long horizon (potentially infinite). In its basic form, it requires linear system whichis not the case in many AC drive control problem. However, various approximations, such as gain scheduling or state dependent Riccatti Equation (SDRE) approach, were proposed and applied to this task. They have certain advantages, however, they all still suffer from the essential problem of LQ approaches, namely its inability to respect hard constraints on the system state variable. In this paper, we interpret the LQ controller as an approximate solution of the constrained problem and use the limited lookahead approach of approximate dynamic programming to introduce the constraint on the amplitude of the drive currents. This yields a constrained quadratic optimization problem, for which we design an iterative solution. Performance of t

Název v anglickém jazyce

Predictive current limiter for LQ based control of AC drives

Popis výsledku anglicky

Linear quadratic control (LQ) is a popular technique for design of control strategy. Its main advantage is the ability to optimize a quadratic cost function on a very long horizon (potentially infinite). In its basic form, it requires linear system whichis not the case in many AC drive control problem. However, various approximations, such as gain scheduling or state dependent Riccatti Equation (SDRE) approach, were proposed and applied to this task. They have certain advantages, however, they all still suffer from the essential problem of LQ approaches, namely its inability to respect hard constraints on the system state variable. In this paper, we interpret the LQ controller as an approximate solution of the constrained problem and use the limited lookahead approach of approximate dynamic programming to introduce the constraint on the amplitude of the drive currents. This yields a constrained quadratic optimization problem, for which we design an iterative solution. Performance of t

Druh

D - Stať ve sborníku

CEP obor

JA - Elektronika a optoelektronika, elektrotechnika

OECD FORD obor

—

Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>S - Specificky vyzkum na vysokych skolach

Rok uplatnění

2015

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název statě ve sborníku

Proceedings of the 3rd Symposium on Predictive Control of Electrical Drives and Power Electronics (PRECEDE 2015)

ISBN

978-1-5090-1717-1

ISSN

—

e-ISSN

—

Počet stran výsledku

6

Strana od-do

1-6

Název nakladatele

IEEE

Místo vydání

Piscataway

Místo konání akce

Valparaíso, Chile

Datum konání akce

5. 10. 2015

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

—