Power Flow Control of a Single Distributed Generation Unit

This research addresses power flow control problem of a grid-connected inverter in distributed generation applications. A real and reactive power control solution is proposed on the basis of an existing voltage control strategy developed for island operations. The power control solution takes advant...

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Bibliographic Details
Published in:IEEE transactions on power electronics 2008-01, Vol.23 (1), p.343-352
Main Authors: Min Dai, Marwali, M.N., Jin-Woo Jung, Keyhani, A.
Format: Article
Language:English
Subjects:
Algorithm design and analysis
Algorithms
Applied sciences
Circuit properties
Circuits of signal characteristics conditioning (including delay circuits)
Control algorithms
Distributed control
Distributed generation (DG)
Electric potential
Electric power
Electric, optical and optoelectronic circuits
Electrical engineering. Electrical power engineering
Electrical machines
Electronic circuits
Electronic equipment and fabrication. Passive components, printed wiring boards, connectics
Electronics
Exact sciences and technology
Feedforward
Flow control
Harmonics
Inverters
Load flow control
Newton-Raphson method
Parameter estimation
Power control
power conversion
Power electronics, power supplies
Power flow
Power system harmonics
Reactive power control
Real time
Real time systems
Regulation and control
Simulation
Voltage
Voltage control
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Summary:This research addresses power flow control problem of a grid-connected inverter in distributed generation applications. A real and reactive power control solution is proposed on the basis of an existing voltage control strategy developed for island operations. The power control solution takes advantage of a newly designed system parameter identification method and a nonlinear feedforward algorithm, both of which are based on Newton-Raphson iteration method and implemented in real time. The proposed power control solution also performs grid-line current conditioning and yields harmonic free grid-line current. A phase locked loop based algorithm is developed as a part of the solution to handle possible harmonic distorted grid-line voltage and maintain harmonic free line current. The effectiveness of the proposed techniques is demonstrated by both simulation and experimental results.
ISSN:0885-8993
1941-0107
DOI:10.1109/TPEL.2007.911815