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Author

C. Lott

Bio: C. Lott is an academic researcher. The author has contributed to research in topics: Voltage source & Harmonics. The author has an hindex of 1, co-authored 2 publications receiving 17 citations.

Papers
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Proceedings ArticleDOI
05 Sep 1994
TL;DR: In this article, a simple control method of voltage source active filters which compensate simultaneously the harmonics and reactive power absorbed by nonlinear loads is described, based on the principle that the active component of load currents can be estimated by a PI regulator which controls the capacitor voltage of the active filter.
Abstract: This paper describes a simple control method of voltage source active filters which compensate simultaneously the harmonics and reactive power absorbed by nonlinear loads. The calculation of active filter current references is based on the principle that the active component of load currents can be estimated by a PI regulator which controls the capacitor voltage of the active filter. By choosing appropriate parameters for the PI regulator, satisfactory static and dynamic performances can be obtained. The theoretical study is firstly confirmed by numerical simulation of a three-phase active filter-rectifier system and then by experimentation through a single-phase low-power model. >

16 citations

Journal ArticleDOI
TL;DR: A new approach of PWM control based on a modelisation of the active power filter decoupling reactor based on the calculation of the instantaneous power described by Akagi, Nabae and Atoh (1986).

1 citations


Cited by
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Journal ArticleDOI
TL;DR: This paper presents a comprehensive review of active filter configurations, control strategies, selection of components, other related economic and technical considerations, and their selection for specific applications.
Abstract: Active filtering of electric power has now become a mature technology for harmonic and reactive power compensation in two-wire (single phase), three-wire (three phase without neutral), and four-wire (three phase with neutral) AC power networks with nonlinear loads. This paper presents a comprehensive review of active filter (AF) configurations, control strategies, selection of components, other related economic and technical considerations, and their selection for specific applications. It is aimed at providing a broad perspective on the status of AF technology to researchers and application engineers dealing with power quality issues. A list of more than 200 research publications on the subject is also appended for a quick reference.

2,311 citations

Proceedings ArticleDOI
08 Dec 2004
TL;DR: The obtained results show the fuzzy logic controller is performing much better than the PI controller over a wide operating range.
Abstract: This paper presents and compares the performance of two control techniques namely fuzzy logic FL and proportional integral PI applied to a voltage source inverter operating as an active power filter. The controllers permit to compensate harmonics and reactive power generated by the non-linear load simultaneously. This work is performed in order to make an accurate comparison of fuzzy logic controller and classical control technique such as PI controller. The fuzzy logic controller implemented uses Sugeno method, and is optimized by using adaptive neuro fuzzy inference system ANFIS. Steady state and transient performance are compared for different methods. The obtained results show the fuzzy logic controller is performing much better than the PI controller over a wide operating range.

44 citations

Proceedings ArticleDOI
10 Jun 2009
TL;DR: Simulation results under different operating conditions demonstrate that the proposed control scheme can successfully cancel harmonic current and compensate reactive power at the point of common coupling.
Abstract: To address power quality problems in industrial power systems, a new control scheme for three-phase active power filter is proposed. The control scheme includes two functional modules such as a current harmonic cancellation module and a reactive power compensation module. The current harmonic cancellation module is based on a multiple adaptive feed-forward cancellation algorithm for selective current harmonic identification. The reactive power compensation module utilizes the measured voltage and the estimated fundamental current to calculate reactive power. After the above information has been calculated, the corrective current reference signals can be generated for the active filter. In this way, the two control functions are integrated together so that one active filter can accomplish two functions simultaneously. Simulation results under different operating conditions demonstrate that the proposed control scheme can successfully cancel harmonic current and compensate reactive power at the point of common coupling.

22 citations

Proceedings ArticleDOI
12 Sep 2004
TL;DR: The objective of this paper is to design a fuzzy controller using a Sugeno method, then optimizing it using an adaptive neuro-fuzzy inference system (ANFIS) and thereafter compare the simulation results with a proportional integral controller (PI).
Abstract: This work presents a comparative study of two indirect current control techniques based on proportional integral (PI) controller and on a fuzzy logic controller applied to a voltage source inverter operating as an active power filter. The performance of the fuzzy controller depends on the choice of membership function and the inference of fuzzy rules that does not require an accurate mathematical model of power converter. The objective of this paper is to design a fuzzy controller using a Sugeno method, then optimizing it using an adaptive neuro-fuzzy inference system (ANFIS) and thereafter compare the simulation results with a proportional integral controller (PI). The output of these controllers is used to calculate the peak supply current. Simulation results are presented using Matlab. It is demonstrated that the fuzzy logic controller improves the performance of the active filter.

11 citations

Proceedings ArticleDOI
18 Oct 2008
TL;DR: An improved direct adaptive fuzzy controller for single-phase active power filter (SAPF) that not only has better dynamic performance and similar filtering performance compared with conversational fuzzy controller, but also has robustness under filter parameters variation.
Abstract: This paper presents an improved direct adaptive fuzzy controller (IDAFC) for single-phase active power filter (SAPF). Although fuzzy control has many successful applications in improvement of power quality, many fuzzy control strategies have no systematic stability analysis and controller design. Systematic stability analysis is performed in the design of proposed IDAFC. Firstly, the principle of SAPF is introduced. Then, based on the fuzzy basis functions and Lyapunov stability, the design of IDAFC is proposed. Finally, simulations show that IDAFC not only has better dynamic performance and similar filtering performance compared with conversational fuzzy controller, but also has robustness under filter parameters variation.

9 citations