A D-Q Frame Controller for a Full-Bridge Single Phase Inverter Used in Small Distributed Power Generation Systems

Roshan, A.; Burgos, Rolando; Baisden, Andrew C.; Wang, Fred; Boroyevich, Dushan

doi:10.1109/apex.2007.357582

Cited by 156 publications

(71 citation statements)

References 14 publications

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“…Diferentemente de [7], em que o controle do inversor foi desenvolvido baseado em um sistema de coordenadas rotacionais "dq" [11,24], neste trabalho a estratégia de controle foi baseado em coordenadas naturais "abc", com resultados interessantes como são apresentado adiante.…”

Section: E Descrição Do Sistemaunclassified

Proposta De Metodologia Para O Gerenciamento Automático De Sistemas Fotovoltaicos De Geração Distribuída

Brandão¹,

Marafão²,

Farret³

et al. 2013

Eletrônica de Potência

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1Resumo -O objetivo principal deste artigo é propor uma metodologia de gerenciamento automático para um sistema fotovoltaico de geração distribuída. A metodologia apresentada é baseada em um conjunto de premissas de operação, bem como informações relativas ao preço de comercialização da energia em uma dada rede, ou ainda, preferências definidas pelos usuários do sistema. Algumas características do sistema proposto são: (i) capacidade de fornecer energia ativa e/ou reativa para cargas locais e vizinhas; (ii) armazenar energia em um banco de baterias; (iii) priorizar cargas; (iv) atuar conectado ou isolado da rede principal e, (v) operar como filtro ativo de potência. Por fim, algumas das possibilidades de operação do sistema serão discutidas e validadas por meio de resultados de simulação e experimental. Palavras-Chave AUTOMATIC MANAGEMENT METHODOLOGY FOR PHOTOVOLTAIC DISTRIBUTED GENERATION SYSTEMSAbstract -The main goal of this paper is to propose a proper methodology for automatic management of a photovoltaic distributed generation system. Such methodology is based on a group of operational premises, as well as energy price in a particular installation and user-driven preferences. Most features of the proposed system are based on the capability of: (i) supplying active and/or reactive power to local loads, (ii) storing energy on a battery bank (iii) selecting loads to be turned on or off; (iv) operating in islanded or connected modes and, (v) acting as active power filter. Finally, some of the proposed operation conditions will be discussed and validated by means of simulation and experimental results. . Espera-se que tais resoluções incentivem a instalação de fontes renováveis de pequeno porte, o que pode impulsionar a penetração de geradores distribuídos na matriz energética nacional; a implantação de tecnologias inteligentes e dispositivos avançados de medição e, a divulgação de informações, em tempo real, sobre os preços da energia ativa e reativa. Tais avanços poderão permitir, no futuro, que os consumidores controlem sua geração e/ou demanda de maneira otimizada [1]. KeywordsÉ neste cenário que este artigo propõe e discute uma metodologia para o gerenciamento automático de um sistema de geração distribuída por conversão fotovoltaica, capaz de realizar a interface entre módulos fotovoltaicos e banco de baterias, com a rede elétrica de distribuição.O termo gerenciamento automático do sistema de geração distribuída é definido neste trabalho como a capacidade multifuncional do sistema para: fornecer energia às cargas locais e cargas vizinhas até o limite nominal do inversor; armazenar energia em um banco de baterias; funcionar como filtro ativo paralelo na ausência de irradiação solar e, possibilitar ao consumidor a opção de controle baseado em informações dos preços das energias obtidas da concessionária (em tempo real ou de forma pré-definida), por meio de dispositivos de medição inteligentes. É importante destacar que o objetivo deste artigo não é o de discutir quem disponibilizará e, como se dará, a tran...

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Section: E Descrição Do Sistemaunclassified

Proposta De Metodologia Para O Gerenciamento Automático De Sistemas Fotovoltaicos De Geração Distribuída

Brandão¹,

Marafão²,

Farret³

et al. 2013

Eletrônica de Potência

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“…In this paper, plant modeling based on the synchronous rotating frame, which is commonly used to model the plant in a single-phase full-bridge inverter [14], is performed as shown in Equations (30) and (31).…”

Section: Plant Modeling Considering Unipolar Sinusoidal Pwm (Spwm) Inmentioning

confidence: 99%

“…One of the advantages in analyzing the inverter system in a synchronous rotating frame is that steady-state operator quantities have constant values under balanced conditions [14]. However, if there are unbalanced conditions such as the system or other harmonics, the three-phase current becomes unbalanced and contains all three sequence components.…”

mentioning

confidence: 99%

Analysis, Design and Implementation of Droop-Controlled Parallel-Inverters Using Dynamic Phasor Model and SOGI-FLL in Microgrid Applications

Kim¹,

Kum²,

Park³

et al. 2018

Energies

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Abstract:The droop control strategy is widely used in islanded microgrids to control power flows according to the load condition, with the absence of a critical communication line, interfacing distributed energy sources to provide for the active and reactive power demand of loads. In this case, the system modeling for both steady-state and transient time is one of the key issues of a droop-controlled system for an inverter-based microgrid (MG). With the rapid development of microgrids, it is essential to identify the system stability and optimize the control parameters, taking into account the network and control dynamics caused by multiple tasks such as electric signal filtering, network synchronization, and so on. Therefore, in order to improve model accuracy and determine control coefficients, this paper analyzes and extends a dynamic phasor-based model to the droop-controlled parallel-inverters, considering network and control dynamics such as a low-pass filter, a second-order generalized integrator frequency-locked-loop (SOGI-FLL), and a system operating sequence. Moreover, discussed in this paper are both the design approaches for and the implementation of a droop-controlled parallel-inverter, which enables the system to be stable and reliable. To demonstrate the effectiveness and validity of this paper, PSIM simulation was performed and two parallel-inverters were combined as the proposed design procedure for the 4-kVA prototypes.

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“…Although simple to implement, some disadvantages have been associated with the PR control, the mains being exponentially decaying response to step changes, and great sensitivity and possibility of instability to the phase shift of sensed signals [15]. The synchronous reference frame proportional-integral (SRFPI) control is also proposed in [16][17][18]. In the SRFPI control, electrical signals are all transformed to the synchronous reference frame, where quantities are dc and, as a consequence the zero steady-state error is ensured by using a conventional PI regulator.…”

Section: Introductionmentioning

confidence: 99%

A simplified control strategy for single-phase UPS inverters

Monfared¹

2014

Bulletin of the Polish Academy of Sciences Technical Sciences

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Abstract. Though there are many strategies to control single-phase uninterruptible power supply (UPS) inverters, they suffer from some drawbacks, the main being complexity. This paper proposes a simple dual-loop controller for the single-phase UPS inverter with the LC filter. The suggested control scheme uses the capacitor current as the feedback signal in the inner current loop. No fictitious phase generation or reference frame transformations are required, and simple proportional gains are employed as both voltage and current regulators. A feedforward of the derivative of the output voltage is also proposed, which significantly improves the performance of the closed loop control system. Then, based on the model of the inverter with the proposed control strategy, a simple and systematic design procedure is presented. Finally, the theoretical achievements are supported by extensive simulations.

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A D-Q Frame Controller for a Full-Bridge Single Phase Inverter Used in Small Distributed Power Generation Systems

Cited by 156 publications

References 14 publications

Proposta De Metodologia Para O Gerenciamento Automático De Sistemas Fotovoltaicos De Geração Distribuída

Proposta De Metodologia Para O Gerenciamento Automático De Sistemas Fotovoltaicos De Geração Distribuída

Analysis, Design and Implementation of Droop-Controlled Parallel-Inverters Using Dynamic Phasor Model and SOGI-FLL in Microgrid Applications

A simplified control strategy for single-phase UPS inverters

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