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Robust Current Controller Design for...

Chhabra, Mohit.

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Robust Current Controller Design for a Grid Connected Three Phase Inverter.

Record Type:	Electronic resources : Monograph/item
Title/Author:	Robust Current Controller Design for a Grid Connected Three Phase Inverter./
Author:	Chhabra, Mohit.
Description:	125 p.
Notes:	Source: Dissertation Abstracts International, Volume: 75-09(E), Section: B.
Contained By:	Dissertation Abstracts International75-09B(E).
Subject:	Engineering, Electronics and Electrical. -
Online resource:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3621311
ISBN:	9781303923456

Robust Current Controller Design for a Grid Connected Three Phase Inverter.
Chhabra, Mohit.

Robust Current Controller Design for a Grid Connected Three Phase Inverter. - 125 p.

Source: Dissertation Abstracts International, Volume: 75-09(E), Section: B.

Thesis (Ph.D.)--University of Colorado at Boulder, 2014.

This item must not be sold to any third party vendors.

In this thesis a robust current control strategy is proposed for a grid connected three phase inverter. Current controllers based on proportional-integral (PI) control may not always offer the superior tracking performance and harmonic rejection ability of robust controllers. Robust control design offers the ability to design a controller that is robust to modeled uncertainties in the plant. A typical inverter may experience fluctuations in its input DC voltage due to uncertainties in the DC power source. In the case of a solar-inverter, large fluctuations in the input DC voltage typically occur due to (i) varying irradiance levels and (ii) phase and ground faults. An inverter is usually designed to disconnect from service in case its DC voltage strays outside a pre-defined operating range. With a current controller that's robust with respect to fluctuations in the input DC voltage, the inverter's operating range could be widened, giving the user more flexibility when designing their system.

ISBN: 9781303923456Subjects--Topical Terms:

626636
Engineering, Electronics and Electrical.

Robust Current Controller Design for a Grid Connected Three Phase Inverter.
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020 $a 9781303923456
035 $a (MiAaPQ)AAI3621311
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100 1 $a Chhabra, Mohit. $3 3169995
245 1 0 $a Robust Current Controller Design for a Grid Connected Three Phase Inverter.
300 $a 125 p.
500 $a Source: Dissertation Abstracts International, Volume: 75-09(E), Section: B.
500 $a Adviser: Frank Barnes.
502 $a Thesis (Ph.D.)--University of Colorado at Boulder, 2014.
506 $a This item must not be sold to any third party vendors.
506 $a This item must not be added to any third party search indexes.
520 $a In this thesis a robust current control strategy is proposed for a grid connected three phase inverter. Current controllers based on proportional-integral (PI) control may not always offer the superior tracking performance and harmonic rejection ability of robust controllers. Robust control design offers the ability to design a controller that is robust to modeled uncertainties in the plant. A typical inverter may experience fluctuations in its input DC voltage due to uncertainties in the DC power source. In the case of a solar-inverter, large fluctuations in the input DC voltage typically occur due to (i) varying irradiance levels and (ii) phase and ground faults. An inverter is usually designed to disconnect from service in case its DC voltage strays outside a pre-defined operating range. With a current controller that's robust with respect to fluctuations in the input DC voltage, the inverter's operating range could be widened, giving the user more flexibility when designing their system.
520 $a A common step in the PI based current controller operation is the transformation of three phase signals to their direct-quadrature equivalent. With the use of the repetitive control strategy, the transformation step is no longer required. The repetitive control strategy is chosen because it can reject a large number of harmonics simultaneously, while providing a clean sinusoidal current waveform to the grid, even in the presence of grid load and/or voltage distortions. The repetitive control strategy is implemented via the internal model principle. Mu-synthesis based control is chosen to attain robust reference tracking in the presence of plant uncertainties. Uncertainty in the inverter input DC voltage is considered and expressed as a static uncertainty. By applying mu-synthesis principles, a feedback controller that simultaneously achieves robust stability and robust tracking performance is obtained.
590 $a School code: 0051.
650 4 $a Engineering, Electronics and Electrical. $3 626636
650 4 $a Engineering, Computer. $3 1669061
650 4 $a Engineering, General. $3 1020744
690 $a 0544
690 $a 0464
690 $a 0537
710 2 $a University of Colorado at Boulder. $b Electrical Engineering. $3 1025672
773 0 $t Dissertation Abstracts International $g 75-09B(E).
790 $a 0051
791 $a Ph.D.
792 $a 2014
793 $a English
856 4 0 $u http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3621311