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Power optimizer

About: Power optimizer is a research topic. Over the lifetime, 10525 publications have been published within this topic receiving 199245 citations.


Papers
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Journal ArticleDOI
TL;DR: In this article, the interest in distributed maximum power point tracking increases along with increasing deployment of photovoltaic generators and the constant pressure to reduce the cost of PV generated power points.
Abstract: The interest in distributed maximum power point tracking increases along with increasing deployment of photovoltaic generators and the constant pressure to reduce the cost of photovoltaic generated...

64 citations

Journal ArticleDOI
TL;DR: In this article, a fuzzy logic based maximum power point taking control is proposed to track permanently the optimum point through an adequate tuning of a boost converter regardless the solar irradiance variations; whereas, on the grid side, a model predictive direct power control is applied, to ensure both supplying a part of the load demand with the extracted photovoltaic power, and a compensation of undesirable harmonic contents of the grid current, under a unity power factor operation.

64 citations

Journal ArticleDOI
TL;DR: In this paper, an application of sliding mode control strategy is applied to track maximum power of photovoltaic cells, which is simple and robust to irradiance and temperature variations.

64 citations

Proceedings ArticleDOI
Z. Chen1, E. Spooner
21 Sep 1998
TL;DR: In this article, the most promising types of power converter applicable to the task of interfacing variable-voltage DC energy sources to the grid are compared and the optimal power transfer, reactive power/voltage regulation and harmonic minimisation are addressed.
Abstract: Two of the most promising types of power converter applicable to the task of interfacing variable-voltage DC energy sources to the grid are compared. The converters studied are first a DC/DC power converter with a current-controlled voltage source inverter and, secondly, the line-commutated SCR with an active compensator for reduction of harmonic current and reactive power demand. The comparison is drawn with particular reference to use with variable-speed permanent-magnet wind turbine generators. The optimal power transfer, reactive power/voltage regulation and harmonic minimisation are addressed. Experimental results from laboratory models are presented alongside simulation results, which are in good agreement, to demonstrate the power control and harmonic performance of these systems. Power losses and semiconductor costs are also discussed.

64 citations

Journal ArticleDOI
TL;DR: In this paper, the authors proposed a smoothing controller to suppress the power fluctuation from doubly-fed induction generator (DFIG)-based wind farm, which consists of three main functionality components: risk assessment model, wind turbine rotor speed optimizer, and rotor speed upper limiter.
Abstract: Wind power fluctuation raises the security concern of grid frequency deviation, especially for an isolated power system. Thus, better control methodology needs to be developed to smooth the fluctuation without excessive spillage. Based on an actual industrial power system, this paper proposes a smoothing controller to suppress the power fluctuation from doubly-fed induction generator (DFIG)-based wind farm. This controller consists of three main functionality components: risk assessment model, wind turbine rotor speed optimizer, and rotor speed upper limiter. In order to avoid unnecessary energy loss, this paper designs a risk assessment model of grid frequency deviation, which is capable of locally estimating the maximum grid frequency deviation risk of the next dispatch cycle. A wind turbine speed optimizer then uses the estimated frequency deviation risk to search for the optimal power curve with reduced output so that a trade-off between fluctuation smoothing and energy loss is achieved. Subsequently, the controller limits the maximum rotor speed to shift down the power curve of wind power plant based on the optimal wind turbine rotor speed. Therefore, the power fluctuation is smoothed along with the down-regulated power curve. A numerical case study demonstrates the effectiveness and economy of this smoothing controller for the studied isolated system.

64 citations


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Performance
Metrics
No. of papers in the topic in previous years
YearPapers
202363
2022144
202112
202017
201924
201850