Modeling and control of three-phase inverter of swirl turbine

Author

Brezina, Tomas ; Hejc, Tomas ; Kovar, Jiri

Author_Institution

Inst. of Autom. & Comput. Sci., Brno Univ. of Technol., Brno, Czech Republic

fYear

2011

fDate

1-3 June 2011

Firstpage

1

Lastpage

5

Abstract

This paper deals with a three-phase inverter controller design for monobloc configuration of small swirl turbine. The aim is an phasing of the system to grid. A simulation design is described which leads to cascade controller with simple structure: lower loop is used for amplitude control and upper loop for phase control. First the highly nonlinear detailed three-phase inverter with switching components and diodes is modeled. Then based on RMS measurement a compensated LTI model is extracted which is used by H-infinity loop-shaping controller synthesis for both controllers design. Lastly design results are verified by simulations applying original three-phase inverter model taking into account high level of disturbances. Resulting system meets with reserve desired behaviour.

Keywords

H^∞ control; PWM invertors; cascade control; control system synthesis; hydraulic turbines; nonlinear control systems; phase control; H-infinity loop-shaping controller synthesis; amplitude control; cascade controller; compensated LTI model; nonlinear detailed three-phase inverter; phase control; pulse width modulation switching; swirl turbine; three-phase inverter controller design; turbine monobloc configuration; Automation; Computational modeling; Inverters; Mathematical model; Pulse width modulation; Turbines; Voltage control; H-infinity control; nonlinear system; three-phase inverter;

fLanguage

English

Publisher

ieee

Conference_Titel

MECHATRONIKA, 2011 14th International Symposium

Conference_Location

Trencianske Teplice

Print_ISBN

978-1-61284-821-1

Type

conf

DOI

10.1109/MECHATRON.2011.5961081

Filename

5961081