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Arthur Rosa
Graduate Program in Electrical Engineering, Federal University of Minas Gerais, Av. Antônio Carlos, 6627, Belo Horizonte 31.270-901, MG, Brazil

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Journal article
Published: 06 October 2018 in Electronics
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In this work, a new real-time Simulation method is designed for nonlinear control techniques applied to power converters. We propose two different implementations: in the first one (Single Hardware in The Loop: SHIL), both model and control laws are inserted in the same Digital Signal Processor (DSP), and in the second approach (Double Hardware in The Loop: DHIL), the equations are loaded in different embedded systems. With this methodology, linear and nonlinear control techniques can be designed and compared in a quick and cheap real-time realization of the proposed systems, ideal for both students and engineers who are interested in learning and validating converters performance. The methodology can be applied to buck, boost, buck-boost, flyback, SEPIC and 3-phase AC-DC boost converters showing that the new and high performance embedded systems can evaluate distinct nonlinear controllers. The approach is done using matlab-simulink over commodity Texas Instruments Digital Signal Processors (TI-DSPs). The main purpose is to demonstrate the feasibility of proposed real-time implementations without using expensive HIL systems such as Opal-RT and Typhoon-HL.

ACS Style

Arthur H. R. Rosa; Matheus B. E. Silva; Marcos F. C. Campos; Renato A. S. Santana; Welbert A. Rodrigues; Lenin M. F. Morais; Seleme I. Seleme Jr.. SHIL and DHIL Simulations of Nonlinear Control Methods Applied for Power Converters Using Embedded Systems. Electronics 2018, 7, 241 .

AMA Style

Arthur H. R. Rosa, Matheus B. E. Silva, Marcos F. C. Campos, Renato A. S. Santana, Welbert A. Rodrigues, Lenin M. F. Morais, Seleme I. Seleme Jr.. SHIL and DHIL Simulations of Nonlinear Control Methods Applied for Power Converters Using Embedded Systems. Electronics. 2018; 7 (10):241.

Chicago/Turabian Style

Arthur H. R. Rosa; Matheus B. E. Silva; Marcos F. C. Campos; Renato A. S. Santana; Welbert A. Rodrigues; Lenin M. F. Morais; Seleme I. Seleme Jr.. 2018. "SHIL and DHIL Simulations of Nonlinear Control Methods Applied for Power Converters Using Embedded Systems." Electronics 7, no. 10: 241.

Journal article
Published: 10 July 2018 in Energies
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Solid State Transformers (SST) are attracting considerable attention due to their great application potential in future smart grids. It is an essential technology capable of promoting the modernization of the electric power distribution system and it is considered a key element for interfacing future microgrid systems to medium voltage utility grids, allowing plug-and-play integration with multiple renewable energy sources, storage devices and DC power systems. Its main advantages in relation to conventional transformers are substantial reduction of volume and weight, fault isolation capability, voltage regulation, harmonic filtering, reactive power compensation and power factor correction. A three-stage modular cascaded topology has been considered as an adequate candidate for the SST implementation, consisting of multiple power modules with input series and output parallel connection. The modular structure presents many advantages, e.g., redundancy, flexibility, lower current harmonic content and voltage stress on the power switches, however component tolerances and mismatches between modules can lead to DC link voltage imbalance and unequal power sharing that can damage the solid state transformer. This paper proposes a decentralized strategy based on adaptive droop control capable of promoting voltage and power balance among modules of a modular cascaded SST, without relying on a communication network. The behavior of the proposed strategy is assessed through a MATLAB/Simulink simulation model of an 100 kVA SST and shows that power and voltage balance are attained through inner power distribution of the SST modules, being transparent to elements connected to the transformer input and output ports. Besides that, real-time simulation results are presented to validate the proposed control strategies. The performance of embedded algorithms is evaluated by the implementation of the SST in a real-time simulation hardware, using a Digital Signal Processor (DSP) and high level programming.

ACS Style

Welbert A. Rodrigues; Thiago R. Oliveira; Lenin M. F. Morais; Arthur H. R. Rosa. Voltage and Power Balance Strategy without Communication for a Modular Solid State Transformer Based on Adaptive Droop Control. Energies 2018, 11, 1802 .

AMA Style

Welbert A. Rodrigues, Thiago R. Oliveira, Lenin M. F. Morais, Arthur H. R. Rosa. Voltage and Power Balance Strategy without Communication for a Modular Solid State Transformer Based on Adaptive Droop Control. Energies. 2018; 11 (7):1802.

Chicago/Turabian Style

Welbert A. Rodrigues; Thiago R. Oliveira; Lenin M. F. Morais; Arthur H. R. Rosa. 2018. "Voltage and Power Balance Strategy without Communication for a Modular Solid State Transformer Based on Adaptive Droop Control." Energies 11, no. 7: 1802.

Journal article
Published: 09 March 2018 in Energies
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In this paper, we propose adaptive nonlinear controllers for the Single-Ended Primary Inductance Converter (SEPIC). We also consider four distinct situations: AC-DC, DC-DC, Continuous Conduction Mode (CCM) and Discontinuous Conduction Mode (DCM). A comparative analysis between classic linear and nonlinear approaches to regulate the control loop is made. Three adaptive nonlinear control laws are designed: Feedback Linearization Control (FLC), Passivity-Based Control (PBC) and Interconnection and Damping Assignment Passivity-Based Control (IDAPBC). In order to compare the performance of these control techniques, numerical simulations were made in Software and Hardware in the Loop (HIL) for nominal conditions and operation disturbances. We recommend adaptive controllers for the two different situations: Adaptive Passivity-Based Feedback Linearization Control (APBFLC) for the PFC (Power Factor Correction) AC-DC system and IDAPBC-BB (IDAPBC Based on Boost converter) for the regulator DC-DC system.

ACS Style

Arthur H. R. Rosa; Thiago M. De Souza; Lenin M. F. Morais; Jr. Seleme I. Seleme. Adaptive and Nonlinear Control Techniques Applied to SEPIC Converter in DC-DC, PFC, CCM and DCM Modes Using HIL Simulation. Energies 2018, 11, 602 .

AMA Style

Arthur H. R. Rosa, Thiago M. De Souza, Lenin M. F. Morais, Jr. Seleme I. Seleme. Adaptive and Nonlinear Control Techniques Applied to SEPIC Converter in DC-DC, PFC, CCM and DCM Modes Using HIL Simulation. Energies. 2018; 11 (3):602.

Chicago/Turabian Style

Arthur H. R. Rosa; Thiago M. De Souza; Lenin M. F. Morais; Jr. Seleme I. Seleme. 2018. "Adaptive and Nonlinear Control Techniques Applied to SEPIC Converter in DC-DC, PFC, CCM and DCM Modes Using HIL Simulation." Energies 11, no. 3: 602.

Conference paper
Published: 01 November 2012 in 2012 10th IEEE/IAS International Conference on Industry Applications
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In the context that involves low and medium powers, boost-type converters have high performance and is therefore strongly recommended to work in regulated sources. However, without adequate control such converters eventually provide high levels of THD (Total Harmonic Distortion) and low power factor (pf). In this way, different authors validated the passivity-based control (PBC) applied to static converters. However, through these studies it was observed that the quality of results is associated with the input signal voltage. Thus, the insertion of the PLL (Phase-Locked Loop) is justified by the poor quality of networks in general. That is usually the power supply voltages are not purely sinusoidal and have very harmonic content. Thus, lower THD levels can be obtained by adding the PLL for imposing a sinusoidal reference signal to the input voltage.

ACS Style

Arthur H. R. Rosa; Seleme I. S. Junior; Lenin M. F. Morais; Porfírio C. Cortizo. Passivity-based control of boost converters using PLL. 2012 10th IEEE/IAS International Conference on Industry Applications 2012, 1 -6.

AMA Style

Arthur H. R. Rosa, Seleme I. S. Junior, Lenin M. F. Morais, Porfírio C. Cortizo. Passivity-based control of boost converters using PLL. 2012 10th IEEE/IAS International Conference on Industry Applications. 2012; ():1-6.

Chicago/Turabian Style

Arthur H. R. Rosa; Seleme I. S. Junior; Lenin M. F. Morais; Porfírio C. Cortizo. 2012. "Passivity-based control of boost converters using PLL." 2012 10th IEEE/IAS International Conference on Industry Applications , no. : 1-6.