Electrical Engineer (1983), Master (1986) and Doctor (1991) in Electrical Eng. at the University of Campinas, Brazil. From 1988 to 1991 he was head of the power electronics group of the Brazilian Synchrotron Laboratory. He completed post-doctoral studies at the University of Padova (1993/1994 and 2015) and at the Third University of Rome (2003), both in Italy. He was president of the Brazilian Association of Power Electronics - SOBRAEP and member of several boards of this entity. He was the coordinator of the Power Electronics and Electric Machines Committee of the Brazilian Automation Society, SBA (two administrations) and was elected member of the Superior Council of this Society for two terms. He was a member of the IEEE Power Electronics Society administrative committee for 4 years. He has been an associate editor of Transactions on Power Electronics (IEEE) since 2003. He was editor of "Eletrônica de Potência", the scientific publication of SOBRAEP and Advances in Power Electronics (Hindawi Publ. Co.). He is a Full Professor at the School of Electrical and Computer Engineering (FFEC) at Unicamp, where he works from 1984. He coordinated the Electrical Engineering course from 2007 to 2011 and is the director of FEEC between 2011 and 2015. Member of the following entities: SOBRAEP, SBA , ABENGE, SBPC, IEEE (Senior Member)
To get high dijdt at pulsed magnets a high-voltage power supply is necessary. A 5OOW, 25kV, paral... more To get high dijdt at pulsed magnets a high-voltage power supply is necessary. A 5OOW, 25kV, parallel-loaded resonant converter has been built in order to feed the LNLS ring kicker magnets. The resonant technique is an interesting option because it significantly reduces the EMI levels and the circuit losses. The use of high frequency permits reduction of the transformer and filter sizes. The tank components are the transformer leakage inductance and winding capacitance. The switching frequency is 2OkHz, limited by the tank circuit characteristic. The load is an LC Pulse-Forming Network, which is discharged on the load by a thyratron tube. The current pulse rise and fall times are about 100 ns and the flat top is 200 ns, at 800 A.
2018 IEEE 19th Workshop on Control and Modeling for Power Electronics (COMPEL), 2018
Considering a scenario of high penetration of voltage source inverters in distribution grids, on ... more Considering a scenario of high penetration of voltage source inverters in distribution grids, on which the number of conductors is variable, this paper proposes a current control approach for three- or four-leg inverters based on the generalized symmetrical components decomposition of non-sinusoidal signals. The approach is an alternative to $d-q$ and $\alpha-\beta$ transformation-based approaches and allows to model and design the control system directly in the $abc$ frame. Simulation results of three- and four-leg inverters operating as multifunctional interfaces of distributed energy resources are presented, as well as comparative results of the proposed approach and other $abc$ frame-based approaches to control four-leg inverters.
In this work a model of the oscillator with inductive coupling of the gates operating at ultralow... more In this work a model of the oscillator with inductive coupling of the gates operating at ultralow voltage is presented and experimentally verified. The topology needs a bias voltage at the gates, and we propose a circuit called starting block to generate this voltage from the supply. Theoretical behavior is compared with experimental results, showing good agreement. The circuit, which behaves as astable multivibrator, could work with a power supply as low as 50 mV using the starting block and deliver 560 gW from a supply of 100 mV. The oscillator is able to be used in the energy harvesting process from low voltage sources for autonomous systems like medical implants and sensor networks.
2015 IEEE 24th International Symposium on Industrial Electronics (ISIE), 2015
This paper proposes a linear algorithm to optimize the compensation of reactive power, harmonic d... more This paper proposes a linear algorithm to optimize the compensation of reactive power, harmonic distortion and unbalanced load applied to distributed electronic power processors, for example, active power filters and/or photovoltaic grid-connected inverters, especially when their power capacity is limited. The optimized compensation consists in achieve, in terms of power quality, the best performance indices, defined at the source side and inside of a feasible region. It improves the power quality at the point of common coupling and enables full exploitation of electronic power processors, increasing their efficiency. The optimized compensation is based on the orthogonal current decomposition (Conservative Power Theory) and on the linear programming (Simplex algorithm). The steady state and dynamic behaviors have been analyzed by theoretical and simulation results. Finally, experimental results are shown to validate the proposed optimized compensation approach.
2016 17th International Conference on Harmonics and Quality of Power (ICHQP), 2016
The static var compensators (SVC) are still in use in both transmission and distribution grids, d... more The static var compensators (SVC) are still in use in both transmission and distribution grids, due to their reduced costs and high reliability. Especially in distribution grids, on which the voltage harmonic distortion limits are less restrictive, it may cause a considerable harmonic distortion impact when operating under non sinusoidal voltage conditions. Therefore, this paper describes a harmonic analysis methodology for the SVC, considering non-ideal source voltages, in order to determine harmonic power terms that may be used to design and also control harmonic power filters. Application examples are presented and the operation of an experimental SVC prototype is also analysed.
2015 Clemson University Power Systems Conference (PSC), 2015
The main goal of this paper is to design and analyze a bidirectional floating interleaved DC-DC b... more The main goal of this paper is to design and analyze a bidirectional floating interleaved DC-DC buck-boost converter applied to a residential photovoltaic (PV) power system with energy storage. The floating interleaved bidirectional converter produces a higher DC voltage gain compared to conventional converters, reducing the required number of series connections for the PV and battery modules. This paper provides a smallsignal model of this bidirectional DC-DC converter, and describes control strategies for the DC-DC and DC-AC converters applied in a typical residential PV power system. The papers shows a transitional control strategy from gridconnected to islanded operating modes, as well as the back connection with the boost/buck operating modes for the bidirectional DC-DC converter. The paper describes the DC link management and voltage control where the regulation techniques are demonstrated by analysis and simulation results showing a complete system operation. Experimental results validate the proposed inverter control scheme.
1 : Cuk and SEPIC converters operating in Discontinuous Current Mode (DCM), used as Power Factor ... more 1 : Cuk and SEPIC converters operating in Discontinuous Current Mode (DCM), used as Power Factor Preregulators (PFP), present some advantages over other topologies: sinusoidal current shaping using constant frequency and duty-cycle, low input current harmonic content, low input filter requirements, isolation between line and load, etc. The main drawbacks are the voltage and current stresses that devices are submitted to. In this paper, an auxiliary circuit is proposed which limits the overvoltage on the main switch and allows its zero-voltage turn off. Zero-current turn on is provided by the DCM operation. In this way switch commutations are soft, thus improving efficiency and reducing RF noise. Design criteria and experimental results are reported.
2016 17th International Conference on Harmonics and Quality of Power (ICHQP), 2016
This article analyses the use of the Power-Based Control in meshed low-voltage microgrids. It is ... more This article analyses the use of the Power-Based Control in meshed low-voltage microgrids. It is shown that the results in terms of power flow and voltage regulation are even better than for radial feeders. The PBC is able to proportionally coordinate the inverters spread in the grid, controlling its active and reactive power, considering the converter capability and the needs of the grid, determined by the central controller. The results consider a real meshed distribution network, with typical demand and local photovoltaic generation profiles.
Abstract– The ,electrical characteristics of an ,isolated induction generator based system are im... more Abstract– The ,electrical characteristics of an ,isolated induction generator based system are improved ,through the association,with ,a PWM ,voltage-source inverter. The electronic converter allows to achieve,a better system behavior in many aspects: voltage regulation, frequency stabilization and
ABSTRACT Electrical Power Quality has become a major focus in the last decades as a consequence o... more ABSTRACT Electrical Power Quality has become a major focus in the last decades as a consequence of the increment in the production cost of energy, in its cost to the consumer, as well as the change in nature of the electrical charges. The raising complexity of the electric installations tackles us with new problems and methodologies for its analysis. In the present work we developed a simulation model using the Alternative Transient Program (ATP-EMTP), based on the results obtained from field measurements in a low voltage residential distribution grid. The simulated results were then compared with the field measurements. Both approaches produced similar results, validating the model. Therefore, this model effectively reproduces the real linear and non-linear loads of the residential distribution grid and so is suitable to be used in future studies. Our data demonstrates that the installation of capacitors for the reactive compensation improves the voltage profile and reduces the current flow, throughout the distribution grid; reducing the losses in the transformer, as well as in the whole grid. Thus, it is an efficient and interesting solution to employ. Yet, it may lead to the amplification of the current and voltage harmonics distortion. Hence, each situation should be analyzed carefully, mainly taking into consideration the type of non-linear loads present in the distribution grid.
ABSTRACT As energias renováveis e não poluentes vêm desempenhando um papel cada vez mais importan... more ABSTRACT As energias renováveis e não poluentes vêm desempenhando um papel cada vez mais importante dentro dos sistemas energéticos. Sua inserção no sistema elétrico está relacionada, principalmente, às reocupações no âmbito energético e ambiental. Dentre as quais se destaca o contínuo aumento da demanda energética. Em um cenário em que a penetração de geradores fotovoltaicos cresce consideravelmente, a instalação de tal dispositivo deve ser detalhadamente estudada. Quando instalado em grande quantidade no sistema de distribuição, alguns impactos técnicos podem sofrer alterações, como: aumento do perfil de tensão devido, principalmente, à baixa relação X/R das linhas de distribuição; desbalanço de potência devido ao uso de geradores monofásico em sistema trifásico; aumento das perdas técnicas devido à modificação do fluxo de corrente. Estas considerações exemplificam a importância de uma análise detalhada sobre os impactos técnicos causados pela acentuada penetração dos sistemas de geração distribuída para determinar sua capacidade de instalação ou sua não instalação no sistema elétrico. Palavras chaves—Fotovoltaico, Geração distribuída, Impactos técnicos, Injeção de reativos, Perfil de tensão. I. INTRODUÇÃO s energias renováveis e não poluentes vêm desempenhando um papel cada vez mais importante dentro dos sistemas energéticos. Sua inserção no sistema elétrico está relacionada, principalmente, às preocupações no âmbito energético e ambiental. Dentre as quais se destacam: o contínuo aumento da demanda energética [1,2,3]; os sistemas de transmissão sobrecarregados e as dificuldades em se construir novas linhas; o efeito estufa e o aquecimento global. Estas duas últimas são consequências diretas da queima de combustíveis fósseis como o carvão mineral e os derivados do petróleo. Os sistemas de geração distribuída despertam grande interesse, pois, podem utilizar diversos tipos de fontes primárias de energia, inclusive, as denominadas renováveis e não poluentes. A multiplicidade de fontes primárias pode agregar um maior grau de flexibilidade ao sistema energético, que passa a contar com várias formas de geração, muitas das quais são complementares, como por exemplo: hidráulica e eólica ou solar e eólica. Outra característica interessante dos sistemas de geração fotovoltaicos é a possibilidade de serem instalados rapidamente e próximo aos consumidores, sejam indústrias ou comércios e residências. A relativa facilidade para a instalação pode atenuar as necessidades imediatas dos governos em realizar investimentos onerosos no sistema energético e, a proximidade com os consumidores, tende a diminuir as perdas decorrentes da transmissão e da distribuição da energia. A energia fotovoltaica se destaca das outras fontes renováveis e não poluentes, principalmente, pelo fato de poder ser instalada rapidamente em zonas densamente urbanizadas, além de ser silenciosa, exigir mínima manutenção e ocupar um espaço físico ocioso, o telhado. A principal desvantagem dos sistemas fotovoltaicos é a baixa eficiência dos módulos comerciais de silício cristalino, que atualmente está em torno de 12% a 15%. Além do elevado custo financeiro para a instalação do sistema, devido ao preço dos módulos e dos conversores eletrônicos de potência [4]. No Brasil, a utilização da energia solar é possível praticamente em todo o território nacional, apresentando ótimas taxas de radiação solar o ano todo [5]. Em um cenário em que a instalação de geradores fotovoltaicos cresce consideravelmente, a penetração de tal dispositivo deve ser melhor detalhada. Quando instalado em grande quantidade no sistema de distribuição, alguns impactos técnicos podem sofrer alterações, como: (1) aumento do perfil de tensão devido, principalmente, à baixa relação X/R das linhas de distribuição; (2) desbalanço de potência devido ao uso de geradores monofásico em sistema trifásico; (3) aumento do aumento das perdas técnicas devido a modificação do fluxo de corrente; etc. Estas considerações exemplificam a importância de uma análise detalhada sobre os impactos técnicos causados pela acentuada penetração dos sistemas de geração distribuída para determinar sua capacidade de instalação ou sua não instalação no sistema elétrico [6,7]. Normas e regulamentações dedicadas à conexão de sistemas dispersos à rede elétrica ainda são muito recentes no Brasil [8,9]. No entanto, algumas organizações técnicas mundiais como o "Institute of Electrical and Electronics Engineers" (IEEE), "International Electrotechinal Commission" (IEC), "German Commission for Electrical, Electronic & Information Technologies" (DKE-VDE) e "Comitato Elettrotecnico Italiano" (CEI) elaboraram normas e relatórios específicos dedicadas a esse assunto, que regem os projetos nos países afiliados às mesmas. Apesar disso, as normas não são definitivas e estão em constante evolução. Dentre os documentos mais indicados e utilizados atualmente no mundo pode-se citar: • IEEE…
2012 Ieee International Energy Conference and Exhibition, Sep 1, 2012
ABSTRACT This paper presents a shunt connected power electronics converter, interfacing a wind ge... more ABSTRACT This paper presents a shunt connected power electronics converter, interfacing a wind generator with a squirrel cage induction generator directly connected to the grid. The converter is able to regulate voltage, mitigate harmonics and control the power flow at the point of common coupling (PCC). The system is modelled and simulated in order to verify the control strategy response to fast power generation variations, typical of low-power wind system.
To get high dijdt at pulsed magnets a high-voltage power supply is necessary. A 5OOW, 25kV, paral... more To get high dijdt at pulsed magnets a high-voltage power supply is necessary. A 5OOW, 25kV, parallel-loaded resonant converter has been built in order to feed the LNLS ring kicker magnets. The resonant technique is an interesting option because it significantly reduces the EMI levels and the circuit losses. The use of high frequency permits reduction of the transformer and filter sizes. The tank components are the transformer leakage inductance and winding capacitance. The switching frequency is 2OkHz, limited by the tank circuit characteristic. The load is an LC Pulse-Forming Network, which is discharged on the load by a thyratron tube. The current pulse rise and fall times are about 100 ns and the flat top is 200 ns, at 800 A.
2018 IEEE 19th Workshop on Control and Modeling for Power Electronics (COMPEL), 2018
Considering a scenario of high penetration of voltage source inverters in distribution grids, on ... more Considering a scenario of high penetration of voltage source inverters in distribution grids, on which the number of conductors is variable, this paper proposes a current control approach for three- or four-leg inverters based on the generalized symmetrical components decomposition of non-sinusoidal signals. The approach is an alternative to $d-q$ and $\alpha-\beta$ transformation-based approaches and allows to model and design the control system directly in the $abc$ frame. Simulation results of three- and four-leg inverters operating as multifunctional interfaces of distributed energy resources are presented, as well as comparative results of the proposed approach and other $abc$ frame-based approaches to control four-leg inverters.
In this work a model of the oscillator with inductive coupling of the gates operating at ultralow... more In this work a model of the oscillator with inductive coupling of the gates operating at ultralow voltage is presented and experimentally verified. The topology needs a bias voltage at the gates, and we propose a circuit called starting block to generate this voltage from the supply. Theoretical behavior is compared with experimental results, showing good agreement. The circuit, which behaves as astable multivibrator, could work with a power supply as low as 50 mV using the starting block and deliver 560 gW from a supply of 100 mV. The oscillator is able to be used in the energy harvesting process from low voltage sources for autonomous systems like medical implants and sensor networks.
2015 IEEE 24th International Symposium on Industrial Electronics (ISIE), 2015
This paper proposes a linear algorithm to optimize the compensation of reactive power, harmonic d... more This paper proposes a linear algorithm to optimize the compensation of reactive power, harmonic distortion and unbalanced load applied to distributed electronic power processors, for example, active power filters and/or photovoltaic grid-connected inverters, especially when their power capacity is limited. The optimized compensation consists in achieve, in terms of power quality, the best performance indices, defined at the source side and inside of a feasible region. It improves the power quality at the point of common coupling and enables full exploitation of electronic power processors, increasing their efficiency. The optimized compensation is based on the orthogonal current decomposition (Conservative Power Theory) and on the linear programming (Simplex algorithm). The steady state and dynamic behaviors have been analyzed by theoretical and simulation results. Finally, experimental results are shown to validate the proposed optimized compensation approach.
2016 17th International Conference on Harmonics and Quality of Power (ICHQP), 2016
The static var compensators (SVC) are still in use in both transmission and distribution grids, d... more The static var compensators (SVC) are still in use in both transmission and distribution grids, due to their reduced costs and high reliability. Especially in distribution grids, on which the voltage harmonic distortion limits are less restrictive, it may cause a considerable harmonic distortion impact when operating under non sinusoidal voltage conditions. Therefore, this paper describes a harmonic analysis methodology for the SVC, considering non-ideal source voltages, in order to determine harmonic power terms that may be used to design and also control harmonic power filters. Application examples are presented and the operation of an experimental SVC prototype is also analysed.
2015 Clemson University Power Systems Conference (PSC), 2015
The main goal of this paper is to design and analyze a bidirectional floating interleaved DC-DC b... more The main goal of this paper is to design and analyze a bidirectional floating interleaved DC-DC buck-boost converter applied to a residential photovoltaic (PV) power system with energy storage. The floating interleaved bidirectional converter produces a higher DC voltage gain compared to conventional converters, reducing the required number of series connections for the PV and battery modules. This paper provides a smallsignal model of this bidirectional DC-DC converter, and describes control strategies for the DC-DC and DC-AC converters applied in a typical residential PV power system. The papers shows a transitional control strategy from gridconnected to islanded operating modes, as well as the back connection with the boost/buck operating modes for the bidirectional DC-DC converter. The paper describes the DC link management and voltage control where the regulation techniques are demonstrated by analysis and simulation results showing a complete system operation. Experimental results validate the proposed inverter control scheme.
1 : Cuk and SEPIC converters operating in Discontinuous Current Mode (DCM), used as Power Factor ... more 1 : Cuk and SEPIC converters operating in Discontinuous Current Mode (DCM), used as Power Factor Preregulators (PFP), present some advantages over other topologies: sinusoidal current shaping using constant frequency and duty-cycle, low input current harmonic content, low input filter requirements, isolation between line and load, etc. The main drawbacks are the voltage and current stresses that devices are submitted to. In this paper, an auxiliary circuit is proposed which limits the overvoltage on the main switch and allows its zero-voltage turn off. Zero-current turn on is provided by the DCM operation. In this way switch commutations are soft, thus improving efficiency and reducing RF noise. Design criteria and experimental results are reported.
2016 17th International Conference on Harmonics and Quality of Power (ICHQP), 2016
This article analyses the use of the Power-Based Control in meshed low-voltage microgrids. It is ... more This article analyses the use of the Power-Based Control in meshed low-voltage microgrids. It is shown that the results in terms of power flow and voltage regulation are even better than for radial feeders. The PBC is able to proportionally coordinate the inverters spread in the grid, controlling its active and reactive power, considering the converter capability and the needs of the grid, determined by the central controller. The results consider a real meshed distribution network, with typical demand and local photovoltaic generation profiles.
Abstract– The ,electrical characteristics of an ,isolated induction generator based system are im... more Abstract– The ,electrical characteristics of an ,isolated induction generator based system are improved ,through the association,with ,a PWM ,voltage-source inverter. The electronic converter allows to achieve,a better system behavior in many aspects: voltage regulation, frequency stabilization and
ABSTRACT Electrical Power Quality has become a major focus in the last decades as a consequence o... more ABSTRACT Electrical Power Quality has become a major focus in the last decades as a consequence of the increment in the production cost of energy, in its cost to the consumer, as well as the change in nature of the electrical charges. The raising complexity of the electric installations tackles us with new problems and methodologies for its analysis. In the present work we developed a simulation model using the Alternative Transient Program (ATP-EMTP), based on the results obtained from field measurements in a low voltage residential distribution grid. The simulated results were then compared with the field measurements. Both approaches produced similar results, validating the model. Therefore, this model effectively reproduces the real linear and non-linear loads of the residential distribution grid and so is suitable to be used in future studies. Our data demonstrates that the installation of capacitors for the reactive compensation improves the voltage profile and reduces the current flow, throughout the distribution grid; reducing the losses in the transformer, as well as in the whole grid. Thus, it is an efficient and interesting solution to employ. Yet, it may lead to the amplification of the current and voltage harmonics distortion. Hence, each situation should be analyzed carefully, mainly taking into consideration the type of non-linear loads present in the distribution grid.
ABSTRACT As energias renováveis e não poluentes vêm desempenhando um papel cada vez mais importan... more ABSTRACT As energias renováveis e não poluentes vêm desempenhando um papel cada vez mais importante dentro dos sistemas energéticos. Sua inserção no sistema elétrico está relacionada, principalmente, às reocupações no âmbito energético e ambiental. Dentre as quais se destaca o contínuo aumento da demanda energética. Em um cenário em que a penetração de geradores fotovoltaicos cresce consideravelmente, a instalação de tal dispositivo deve ser detalhadamente estudada. Quando instalado em grande quantidade no sistema de distribuição, alguns impactos técnicos podem sofrer alterações, como: aumento do perfil de tensão devido, principalmente, à baixa relação X/R das linhas de distribuição; desbalanço de potência devido ao uso de geradores monofásico em sistema trifásico; aumento das perdas técnicas devido à modificação do fluxo de corrente. Estas considerações exemplificam a importância de uma análise detalhada sobre os impactos técnicos causados pela acentuada penetração dos sistemas de geração distribuída para determinar sua capacidade de instalação ou sua não instalação no sistema elétrico. Palavras chaves—Fotovoltaico, Geração distribuída, Impactos técnicos, Injeção de reativos, Perfil de tensão. I. INTRODUÇÃO s energias renováveis e não poluentes vêm desempenhando um papel cada vez mais importante dentro dos sistemas energéticos. Sua inserção no sistema elétrico está relacionada, principalmente, às preocupações no âmbito energético e ambiental. Dentre as quais se destacam: o contínuo aumento da demanda energética [1,2,3]; os sistemas de transmissão sobrecarregados e as dificuldades em se construir novas linhas; o efeito estufa e o aquecimento global. Estas duas últimas são consequências diretas da queima de combustíveis fósseis como o carvão mineral e os derivados do petróleo. Os sistemas de geração distribuída despertam grande interesse, pois, podem utilizar diversos tipos de fontes primárias de energia, inclusive, as denominadas renováveis e não poluentes. A multiplicidade de fontes primárias pode agregar um maior grau de flexibilidade ao sistema energético, que passa a contar com várias formas de geração, muitas das quais são complementares, como por exemplo: hidráulica e eólica ou solar e eólica. Outra característica interessante dos sistemas de geração fotovoltaicos é a possibilidade de serem instalados rapidamente e próximo aos consumidores, sejam indústrias ou comércios e residências. A relativa facilidade para a instalação pode atenuar as necessidades imediatas dos governos em realizar investimentos onerosos no sistema energético e, a proximidade com os consumidores, tende a diminuir as perdas decorrentes da transmissão e da distribuição da energia. A energia fotovoltaica se destaca das outras fontes renováveis e não poluentes, principalmente, pelo fato de poder ser instalada rapidamente em zonas densamente urbanizadas, além de ser silenciosa, exigir mínima manutenção e ocupar um espaço físico ocioso, o telhado. A principal desvantagem dos sistemas fotovoltaicos é a baixa eficiência dos módulos comerciais de silício cristalino, que atualmente está em torno de 12% a 15%. Além do elevado custo financeiro para a instalação do sistema, devido ao preço dos módulos e dos conversores eletrônicos de potência [4]. No Brasil, a utilização da energia solar é possível praticamente em todo o território nacional, apresentando ótimas taxas de radiação solar o ano todo [5]. Em um cenário em que a instalação de geradores fotovoltaicos cresce consideravelmente, a penetração de tal dispositivo deve ser melhor detalhada. Quando instalado em grande quantidade no sistema de distribuição, alguns impactos técnicos podem sofrer alterações, como: (1) aumento do perfil de tensão devido, principalmente, à baixa relação X/R das linhas de distribuição; (2) desbalanço de potência devido ao uso de geradores monofásico em sistema trifásico; (3) aumento do aumento das perdas técnicas devido a modificação do fluxo de corrente; etc. Estas considerações exemplificam a importância de uma análise detalhada sobre os impactos técnicos causados pela acentuada penetração dos sistemas de geração distribuída para determinar sua capacidade de instalação ou sua não instalação no sistema elétrico [6,7]. Normas e regulamentações dedicadas à conexão de sistemas dispersos à rede elétrica ainda são muito recentes no Brasil [8,9]. No entanto, algumas organizações técnicas mundiais como o "Institute of Electrical and Electronics Engineers" (IEEE), "International Electrotechinal Commission" (IEC), "German Commission for Electrical, Electronic & Information Technologies" (DKE-VDE) e "Comitato Elettrotecnico Italiano" (CEI) elaboraram normas e relatórios específicos dedicadas a esse assunto, que regem os projetos nos países afiliados às mesmas. Apesar disso, as normas não são definitivas e estão em constante evolução. Dentre os documentos mais indicados e utilizados atualmente no mundo pode-se citar: • IEEE…
2012 Ieee International Energy Conference and Exhibition, Sep 1, 2012
ABSTRACT This paper presents a shunt connected power electronics converter, interfacing a wind ge... more ABSTRACT This paper presents a shunt connected power electronics converter, interfacing a wind generator with a squirrel cage induction generator directly connected to the grid. The converter is able to regulate voltage, mitigate harmonics and control the power flow at the point of common coupling (PCC). The system is modelled and simulated in order to verify the control strategy response to fast power generation variations, typical of low-power wind system.
Uploads