Enhanced power quality control strategy for single-phase inverters in distributed generation systems

Bojoi, Radu; Limongi, Leonardo Rodrigues; Roiu,; Tenconi,

doi:10.1109/isie.2010.5637010

Cited by 74 publications

(118 citation statements)

References 16 publications

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“…En [17] se presenta un inversor monofásico para sistemas de generación distribuida que requieren características de calidad de energía (armónicos y compensación de potencia reactiva) para el funcionamiento conectado a la red.…”

Section: Influencia De Los Armónicos En Los Sistemas Eléctricosunclassified

Aspectos técnicos y normativos para el monitoreo y medición de armónicos

Rojas

Trujillo

Matta

2014

Ing.

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<p>En este artículo se presenta un análisis acerca de los parámetros requeridos para un adecuado proceso de monitoreo y medición de armónicos presentes en las redes de energía eléctrica, para estudios de calidad de potencia. Inicialmente se introducen conceptos básicos de los armónicos presentes en las redes de energía eléctrica, posteriormente se mencionan las normas y recomendaciones de regulación para la calidad de energía eléctrica en el marco colombiano. Seguido a esto se presentan algunos parámetros importantes que deben ser tenidos en cuenta para una adecuada adquisición y tratamiento de las señales de tensión y corriente tanto a frecuencia fundamental como a frecuencias armónicas, donde se hace énfasis en puntos como: medición de armónicos, determinación del punto de acople o conexión común (PCC), correcta ubicación de los sensores y registradores, equipos de medición de calidad de potencia, frecuencia de muestreo, intervalos de observación, transductores, medición de armónicos de tensión, medición de armónicos de corriente y condiciones del sistema durante la medición..</p>

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Section: Influencia De Los Armónicos En Los Sistemas Eléctricosunclassified

Aspectos técnicos y normativos para el monitoreo y medición de armónicos

Rojas

Trujillo

Matta

2014

Ing.

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“…In (4), N is the number of samples in one fundamental period which is defined as the ratio of the sampling frequency and the fundamental output frequency. As a result, the RC has three main components that need to be determined, i.e., the filter Q(z), the phase lead term z k , and the RC controller gain K r .…”

Section: A Structure Of Repetitive Controllermentioning

confidence: 99%

“…Fig. 5 shows the Bode diagram of the traditional PI-RC given in (4). In this case, the fundamental frequency is selected to be 50 Hz.…”

Section: A Structure Of Repetitive Controllermentioning

confidence: 99%

“…It is well-known that three-phase nonlinear loads produce only (6n±1)th (n=1, 2, 3…) harmonic components and the (6n±1)th harmonics become 6nth harmonics in the d-q frame. Therefore, to compensate the harmonics in three-phase systems, it is sufficient to take into account only the 6nth (n=1, 2, 3…) harmonics instead of every (odd and even) harmonic as considered in (4). As a result, the transfer function of the proposed RC, which considers only 6nth (n=1, 2, 3…) harmonics in the d-q frame, can be described as follows:…”

Section: B Proposed Repetitive Controllermentioning

confidence: 99%

“…Recently, a large number of renewable energy sources have been integrated into power distribution systems in the form of distributed generation (DG) [1]. Most DG systems have been developed to operate in the grid-connected mode with various operational functions such as power control, harmonic current mitigation, and reactive power compensation [2]- [4]. In addition, the stand-alone (isolated) operation should also be considered in order to exploit the full potential of DG systems.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Advanced Repetitive Controller to Improve the Voltage Characteristics of Distributed Generation with Nonlinear Loads

Trinh¹,

Lee²

2013

Journal of Power Electronics

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This paper presents an enhanced control strategy which consists of a proportional-integral controller and a repetitive controller (RC) for improving the voltage performance of distributed generation (DG) under nonlinear load conditions. The proposed voltage controller is able to maintain a sinusoidal voltage at the point of common coupling (PCC) of the DG regardless of the harmonic voltage drop in the system impedance due to nonlinear load currents. In addition, by employing the delay time of the RC at one-sixth of the fundamental period, the proposed RC can overcome the slow response drawback of the traditional PI-RC. The proposed control strategy is analyzed and the design of the RC is presented in detail. The feasibility of the proposed control strategy is verified through simulation and experimental results.

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Multifunctional Capabilities of Grid Connected Distributed Generation System with Non‐Linear Loads

Singh

2015

Asian Journal of Control

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This paper deals with the integration of distribution energy resource (DER) connected to a three‐phase grid connected system feeding a variety of loads. The DER is controlled to provide power quality improvement capabilities viz. power factor correction, harmonic reduction, voltage regulation, and load balancing, and it is realized as a voltage source converter (VSC). The developed controller is based on Synchronous Reference Frame (SRF) Theory and an energy based controller that also includes additional features viz. filtration of fundamental voltage extracted from the polluted utility grid voltages. This new controller, realized as an energy controller, is implemented over the square of the DC link voltage of the DER. The control algorithm has been tested for several power quality improvement features and works well for power factor correction, voltage regulation, harmonic reduction, and operation under unbalanced load conditions. Extensive simulation and hardware results are demonstrated on a prototype developed in the laboratory.

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Enhanced power quality control strategy for single-phase inverters in distributed generation systems

Cited by 74 publications

References 16 publications

Aspectos técnicos y normativos para el monitoreo y medición de armónicos

Aspectos técnicos y normativos para el monitoreo y medición de armónicos

Advanced Repetitive Controller to Improve the Voltage Characteristics of Distributed Generation with Nonlinear Loads

Multifunctional Capabilities of Grid Connected Distributed Generation System with Non‐Linear Loads

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