Journal ArticleDOI
A wireless controller to enhance dynamic performance of parallel inverters in distributed generation systems
TLDR
In this paper, a novel control strategy for parallel inverters of distributed generation units in an AC distribution system is presented, based on the droop control method, using only locally measurable feedback signals.Abstract:
This paper presents a novel control strategy for parallel inverters of distributed generation units in an AC distribution system. The proposed control technique, based on the droop control method, uses only locally measurable feedback signals. This method is usually applied to achieve good active and reactive power sharing when communication between the inverters is difficult due to its physical location. However, the conventional voltage and frequency droop methods of achieving load sharing have a slow and oscillating transient response. Moreover, there is no possibility to modify the transient response without the loss of power sharing precision or output-voltage and frequency accuracy. In this work, a great improvement in transient response is achieved by introducing power derivative-integral terms into a conventional droop scheme. Hence, better controllability of the system is obtained and, consequently, correct transient performance can be achieved. In addition, an instantaneous current control loop is also included in the novel controller to ensure correct sharing of harmonic components when supplying nonlinear loads. Simulation and experimental results are presented to prove the validity of this approach, which shows excellent performance as opposed to the conventional one.read more
Citations
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Journal ArticleDOI
Cooperative Control of Active Power Filters in Power Systems without Mutual Communication
TL;DR: In this article, the controller parameters of the APFs implemented into a multibus industrial power system for harmonic voltage mitigation are calculated under the condition that the demanded THD factors at the buses where the APF are placed will be obtained.
Posted Content
State Space Modeling of Inverter Based Microgrids Considering Distributed Secondary Voltage Control
TL;DR: In this article, a comprehensive state space modeling of voltage source inverters, networks and loads is studied, where a distributed control algorithm only requiring a sparse communication between neighboring distributed generators (DGs) is used.
Proceedings ArticleDOI
Frequency control using real-time pricing for isolated power systems
TL;DR: A technique of frequency and voltage control by using demand-response and battery control for isolated power systems, which includes wind generators is described and the H∞ control method installed in batteries is adopted as improvement over the conventional Droop control method.
Journal ArticleDOI
A new implementation of PID-type fuzzy controller for a battery grid-supporting inverter in an autonomous distributed variable-speed wind turbine
Ferdian Ronilaya,Hajime Miyauchi +1 more
TL;DR: In this paper, a proportional integral-derivative (PID)-type fuzzy controller was proposed for a battery grid-supporting inverter to regulate the frequency and voltage of an autonomous distributed variable-speed wind turbine (VSWT).
Proceedings ArticleDOI
Performance improvement of the droop control for single-phase inverters
Gustavo M. S. Azevedo,Marcelo C. Cavalcanti,Francisco A. S. Neves,Pedro Rodriguez,Joan Rocabert +4 more
TL;DR: In this paper, a method that uses a virtual quadrature reference frame to calculate the average power components injected by single-phase inverters is presented, which improves the dynamic response of the power sharing control, as well as eliminates the double frequency oscillation over the voltage and frequency synthesized by the inverter in steady state.
References
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Journal ArticleDOI
Control of parallel connected inverters in stand-alone AC supply systems
TL;DR: In this article, a control scheme for parallel-connected inverters in a standalone AC supply system is presented, which uses feedback of only those variables that can be measured locally at the inverter and does not need communication of control signals between the inverters.
Book
Power Systems Analysis
TL;DR: In this article, the authors present a model of a single machine-infinite bus (SIB) with three-phase transformer connections for the purpose of detecting faults in a generator.
Journal ArticleDOI
Parallel operation of voltage source inverters
T. Kawabata,S. Higashino +1 more
TL;DR: In this paper, the authors discuss the problem of parallel operating systems of voltage source inverters with other inverters or with the utility source and propose several methods for protection against failure.
Journal ArticleDOI
Sharing of nonlinear load in parallel connected three-phase converters
TL;DR: In this article, a new control method is presented which enables equal sharing of linear and nonlinear loads in three-phase power converters connected in parallel, without communication between the converters.
Proceedings ArticleDOI
Parallel operation of single phase inverter modules with no control interconnections
TL;DR: In this article, the authors developed a control technique for operating two or more single phase inverter modules in parallel with no auxiliary interconnections, using frequency, fundamental voltage, and harmonic voltage droop to allow independent inverters to share the load in proportion to their capacities.