Internal Dynamics Stabilization of Single-Phase Power Converters With Lyapunov-Based Automatic-Power-Decoupling Control

Single-phase power converters with the active pulsating-power-buffering (PPB) function are essentially highly coupled and nonlinear systems. Advanced control techniques are needed for this emerging class of converters to achieve fast transient response and large-signal stability. Existing control so...

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Bibliographic Details
Published in:IEEE transactions on power electronics 2020-02, Vol.35 (2), p.2160-2169
Main Authors: Yuan, Huawei, Li, Sinan, Tan, Siew-Chong, Hui, S. Y. Ron
Format: Article
Language:English
Subjects:
active power decoupling
Automatic control
Avalanche photodiodes
Bridge circuits
Circuit stability
Control stability
Control systems
Decoupling
Energy conversion
Feedback linearization
internal dynamics stabilization
Linear control
Lyapunov-based control
Mathematical model
Nonlinear control
Nonlinear systems
Power conversion
Power converters
Single-phase power conversion
Stability analysis
Stabilization
Steady-state
Topology
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Description
Summary:Single-phase power converters with the active pulsating-power-buffering (PPB) function are essentially highly coupled and nonlinear systems. Advanced control techniques are needed for this emerging class of converters to achieve fast transient response and large-signal stability. Existing control solutions are based on either 1) linear control techniques that are operating-point specific or 2) nonlinear control techniques that are generally topology-dependent. The proposed work is an evolved generalized feedback-linearization (FBL) control approach that incorporates the direct Lyapunov control method. The proposed control provides good stabilization of the internal dynamics of the system (which is unviable with FBL control) while still retaining all the best features of FBL control. A kind of single-phase power conversion system with active PPB is described. It is shown that FBL control naturally destabilizes the system and that the proposed control can globally stabilize the system under various operating conditions while yielding fast dynamics.
ISSN:0885-8993
1941-0107
DOI:10.1109/TPEL.2019.2921416