High-Performance Grid Simulator Using Parallel Structure Fractional Repetitive Control

In this paper, a high-performance grid simulator based on a parallel structure fractional repetitive control scheme is employed to emulate various operation scenarios of power grids for testing power products. In this paper, a simple fractional repetitive control scheme is proposed for grid simulato...

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Bibliographic Details
Published in:IEEE transactions on power electronics 2016-03, Vol.31 (3), p.2669-2679
Main Authors: Liu, Tianqi, Wang, Danwei, Zhou, Keliang
Format: Article
Language:English
Subjects:
Accuracy
Control systems
Controllers
Criteria
Delay
Delays
fractional repetitive control
Frequencies
Frequency control
Generators
Grid simulator
Harmonic analysis
Harmonics
Inverters
power perturbations
Pulse width modulation
PWM inverters
Repetitive control
Repetitive controllers
Simulation
Simulators
Tracking
tracking accuracy
Transient responses
Voltage fluctuations
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Summary:In this paper, a high-performance grid simulator based on a parallel structure fractional repetitive control scheme is employed to emulate various operation scenarios of power grids for testing power products. In this paper, a simple fractional repetitive control scheme is proposed for grid simulators to achieve high-accuracy tracking performance. Using parallel branches, the proposed repetitive controller can flexibly select the interested harmonics for compensation, and independently, tune the convergency rate at selective harmonic frequencies. Compared with the conventional repetitive control, the proposed control scheme achieves faster transient response. Moreover, the number of delay units required in the proposed repetitive controller is reduced to at least half of that in a conventional repetitive controller. Design process and stability criteria are presented in details. A set of experimental results is provided to verify the effectiveness of the proposed approach.
ISSN:0885-8993
1941-0107
DOI:10.1109/TPEL.2015.2441732