Journal ArticleDOI
Frequency domain analysis of three phase linear current regulators
D.N. Zmood,Donald Grahame Holmes,Gerwich Bode +2 more
- Vol. 37, Iss: 2, pp 601-610
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TLDR
In this article, a technique for interpreting the stationary/rotating frame transformations as modulation processes in the Laplace domain is presented, which moves the control function from one part of the frequency spectrum to another.Abstract:
Stationary frame linear PI current regulators are conventionally regarded as unsatisfactory for AC systems because they cannot eliminate steady state errors. Consequently, synchronous frame regulators are perceived to be superior, since they achieve zero steady state error by acting on DC signals in a rotating frame of reference. However, a synchronous frame regulator is more complex, and requires in particular a way of transforming a measured stationary frame AC current (or error) to rotating frame DC quantities, and transforming the resultant control action back to the stationary frame for implementation. This paper presents a technique for interpreting the stationary/rotating frame transformations as modulation processes in the Laplace domain which move the control function from one part of the frequency spectrum to another. The technique is used to compare stationary and synchronous frame PI regulators on a common basis to better understand the advantages of a synchronous frame regulator, and then to develop a new form of stationary frame resonant regulator which achieves zero steady state error without requiring the complex transformations of a synchronous frame regulator. The performance of this new regulator is evaluated and found to be equivalent to that of the synchronous frame PI regulator.read more
Citations
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Journal ArticleDOI
dq -Frame Impedance Modeling of Three-Phase Grid-Tied Voltage Source Converters Equipped With Advanced PLLs
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Sensorless Digital Control of Grid Connected Three Phase Converters for Renewable Sources
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Proceedings ArticleDOI
Current Control of a Voltage Source Inverter Connected to the Grid via LCL Filter
TL;DR: In this paper, a simple current control scheme based on the combination of deadbeat and PI control was proposed for a three-phase voltage source inverter connected to the grid via an LCL filter.
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Dissipativity-based adaptive and robust control of UPS
TL;DR: This paper derives a dissipativity-based controller using a frequency-domain representation of system dynamics, which turns out to have the proportional-plus-integral-type structure on rotating-frame variables, but with a special design of gain matrices.
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Development of Robust Current 2-DOF Controllers for a Permanent Magnet Synchronous Motor Drive With Reaction Wheel Load
Ming-Chang Chou,Chang-Ming Liaw +1 more
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References
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Journal ArticleDOI
Current control techniques for three-phase voltage-source PWM converters: a survey
TL;DR: Current control techniques for three-phase voltage-source pulsewidth modulated converters, including bang-bang (hysteresis, delta modulation) controllers and predictive controllers with on-line optimization are reviewed.
Book
Vector Control and Dynamics of AC Drives
Donald W. Novotny,Thomas A. Lipo +1 more
TL;DR: In this article, the authors present a d-q model for solid state power converters and present a complex vector analysis of induction machines and synchronous machines with respect to vector control and field orientation.
Journal ArticleDOI
Model-based current control of AC machines using the internal model control method
Lennart Harnefors,Hans-Peter Nee +1 more
TL;DR: In this article, the internal model control (IMC) method is introduced and applied to AC machine current control, and it is shown that IMC is able to outperform PI control with and without decoupling with respect to dq variable interaction in the presence of parameter deviations.
Journal ArticleDOI
A New Synchronous Current Regulator and an Analysis of Current-Regulated PWM Inverters
TL;DR: In this article, a detailed model for the stationary and synchronous sine-triangle current regulators is presented, and the results demonstrate the limitations of the two most often used current regulators and the robustness of the synchronous current regulator.
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