Novel proportional-integral-resonant current controller for three phase PWM converters

Stojić, Djordje; Milinković, Milan; Veinović, Slavko; Klasnić, Ilija

doi:10.1109/efea.2016.7748788

Cited by 6 publications

(7 citation statements)

References 6 publications

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“…In the real solutions, a controller with limited amplification for resonant frequency is used. In the scientific literature there are also examples of the modified structures of the regulator which aim to improve its operation in unstable power supply conditions.. [1][2][3] Control systems may be based on microprocessor systems or faster programmable logic devices (e.g. FPGA or CPLD).…”

Section: Introductionmentioning

confidence: 99%

Implementation of the Proportional Resonant controller in the FPGA system

Nowak¹

2019

ELECTROTECHNICAL REVIEW

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The article presents the process of discretization and implementation of the Proportional Resonant controller in a digital programmable system of FPGA type. The synthesis of the regulator in a continuous version is presented and on its basis the discretization has been carried out. The digital form of the regulator has been implemented into the FPGA system. The device has been simulated in real time and this paper presents some of the results of this research. Its aim was to evaluate the operation of the regulator in a digital form, prior to the implementation into a real device. The article is a continuation of the research aimed at the implementation of the regulator in the real device. Streszczenie. W artykule przedstawiono proces dyskretyzacji i implementacji regulatora P+R w cyfrowym układzie programowalnym typu FPGA. Zaprezentowano syntezę regulatora w wersji ciągłej i na jej podstawie przeprowadzono dyskretyzację. Cyfrowa postać regulatora została zaimplementowana do układu FPGA. Przeprowadzona została symulacja urządzenia w czasie rzeczywistym a niniejsza praca prezentuje niektóre wyniki tych badań. Jej celem była ocena pracy regulatora w cyfrowej postaci, przed implementacją do rzeczywistego urządzenia. Artykuł jest kontynuacją badań zmierzających do uruchomienia regulatora w rzeczywistym urządzeniu. (Realizacja regulatora Proporcjonalno-Rezonansowego w układzie FPGA)

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Section: Introductionmentioning

confidence: 99%

Implementation of the Proportional Resonant controller in the FPGA system

Nowak¹

2019

ELECTROTECHNICAL REVIEW

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“…The integral term in this controller is used to regulate the dc current component [29]. Hence, if the proposed measurement technique is used as shown in Fig.…”

Section: Pv Inverter Control Scheme In Grid-tied Mode With the Pmentioning

confidence: 99%

“…The first one is based on a proportional-integral (PI) current controller in the synchronous reference frame [25], [26], while the second one is based on a proportional-resonant (PR) or a proportional-integral-resonant (PIR) current controller in the stationary reference frame [27]- [29]. In this paper, a single loop PIR current controller is used, whose block diagram is shown in Fig.…”

Section: Pv Inverter Control Scheme In Grid-tied Mode With the Pmentioning

confidence: 99%

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Coupled-Inductor-Based DC Current Measurement Technique for Transformerless Grid-Tied Inverters

Abdelhakim

Mattavelli

Yang

et al. 2018

IEEE Trans. Power Electron.

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Grid-tied photovoltaic (PV) inverters must fulfill several requirements, including high efficiency and reduced cost and complexity of the overall system. Hence, transformerless operation is advantageous in order to achieve the prior requirements. Meanwhile, such operation results in several demerits, like the dc current component injection into the grid. This component should be effectively mitigated in order to avoid some impacts, like the saturation of the transformers in the distribution network. On the other hand, limiting this component up to few milliamperes is seen to be a challenging issue due to the various measurement errors.Accordingly, different blocking and measurement techniques have been proposed and studied to overcome this issue, where some demerits are seen behind each technique like the implementation complexity, the common mode voltage problems, and the high filter requirements. Moreover, none of them measures the dc component directly, but predicts its value using different approaches.Hence, this letter proposes a new technique to measure this dc current component with high accuracy using a coupled-inductor combined with a small range hall effect current sensor in order to achieve the lowest possible cost with the highest possible accuracy. The proposed technique is introduced, analyzed, and tested experimentally to verify its principle of operation. Also experimental measurement of the dc current component using a 5 kVA transformerless grid-tied voltage source inverter (VSI) is introduced with and without the proposed technique in order to validate its operation.

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“…Proportional integral resonant (Stojić et al 2016) controllers and proportional resonant (PR) controllers (Ramesh and Mandava 2015;Kumar et al 2018) have been introduced to amend the accomplishment of MG operation. These controllers achieve very less steady-state error.…”

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confidence: 99%

Negative Imaginary Theory-Based Proportional Resonant Controller for Voltage Control of Three-Phase Islanded Microgrid

Haque

Islam

Hasan

et al. 2020

J Control Autom Electr Syst

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This paper demonstrates the design of robust proportional resonant (PR) controller using negative imaginary (NI) theorem for voltage control of three-phase islanded microgrid (MG) application. While operating MG as the islanded mode, different types of random and unknown load dynamics affect the MG. These loads eventually deteriorate the proper execution of MG-inducing disturbances in voltage and current. Therefore, to improve the performance of the three-phase MG, a simple, second-order controller is designed with the combination of NI theory and PR (NI-PR) controller. This controller is capable of providing higher level of damping as well as excellent stability properties. The stability and effectiveness of this controller are examined through imposing uncertainties, in terms of several load dynamics as well as different fault conditions. The comparison with respect to linear quadratic regulator and model predictive controller also ascertains the robustness of the designed controller. The NI-PR controller and the system are simulated in MATLAB/SIMULINK platform. Keywords Islanded microgrid • Negative imaginary theory • Second-order controller • Voltage control • Robust performance 1 Introduction Keeping the pace with progressive advanced facilities, demand for energy is rising lavishly. But due to the environmental protection, depletion of fossil fuel and sustainable development resulted in critical need for a cleaner energy technology (Bouchebbat and Gherbi 2017; Islam et al. 2020c). Hence, renewable energy sources are playing a vital role in today's power system applications. Some popular renewable energy sources are wind energy, photovoltaic (PV) system, biomass, wave energy, hydro-power, etc. (Coelho et al. 2018). Renewable energy sources-based distributed generators (DGs) are mainly small-scale power generation

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Novel proportional-integral-resonant current controller for three phase PWM converters

Cited by 6 publications

References 6 publications

Implementation of the Proportional Resonant controller in the FPGA system

Implementation of the Proportional Resonant controller in the FPGA system

Coupled-Inductor-Based DC Current Measurement Technique for Transformerless Grid-Tied Inverters

Negative Imaginary Theory-Based Proportional Resonant Controller for Voltage Control of Three-Phase Islanded Microgrid

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