Comparative analysis of PI and PR based Current Controllers for Grid Connected Photovoltaic Micro-inverters

Hlali, Mounir; Bahri, Imen; Belloumi, Hamed; Kourda, Ferid

doi:10.1109/irec.2019.8754522

Cited by 4 publications

(4 citation statements)

References 9 publications

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“…The addition of a secondary level of Proportional Resonant (PR) controllers along with the primary droop controllers has been proven superior in the grid-connected mode in terms of steady-state tracking error and disturbance rejection. Comparative analysis of the performance of resonant controllers and optimised PI controllers has provided enhanced performance (Hlali et al 2019;Nair et al 2023). The general limitation of these approaches is the requirement of complex control loops which require careful tuning in terms of stability and system parameter limits (Jiang et al 2020;Roselyn et al 2020).…”

Section: Research Articlementioning

confidence: 99%

Virtual oscillator with delayed feedback for transient mitigation in inverter-based islanded microgrids

Salim,

Babu,

Krishna

2024

Int. J. Renew. Energy Dev.

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In recent years, the conventional control schemes for renewable energy-based inverter-dominated microgrids have been expeditiously replaced by Virtual Oscillator-based Control (VOC). The method of VOC ensures fast synchronisation and efficient load-sharing capabilities in inverter-based renewable energy systems. This work evaluates the effectiveness of VOC-based inverters in mitigating the transient dynamics of power system parameters like voltage, frequency and current under different types of switching events involving active and reactive load combinations. Further, to enhance the control efficiency of VOC under such load-switching scenarios a modified form of VOC is proposed utilizing the ability of the feedback mechanism to strengthen the state space trajectory of dynamical systems. In the proposed method, the control oscillator of conventional VOC driven by the inverter current is modified by providing a feedback signal in the form of an integral function of the error between the drive oscillator and the trajectory of the inverter output. The efficiencies of different forms of feedback are quantified in terms of percentage deviation in power system parameters as well as THD. The proposed feedback strategy can improve the control performance by bringing down the voltage deviation from 57 % in conventional VOC to around 4%. Likewise, the frequency deviation is brought down to 0.14% from 19.26 %. These advantages are achieved without any significant adverse impact on the THD. The proposed approach can be utilized in multi-inverter-based systems serving sensitive loads in microgrids.

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Section: Research Articlementioning

confidence: 99%

Virtual oscillator with delayed feedback for transient mitigation in inverter-based islanded microgrids

Salim,

Babu,

Krishna

2024

Int. J. Renew. Energy Dev.

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“…Populiariausi valdikliai naudojami tinklo mikroinverterio išėjimo srovei sekti, yra proporcinis integralinis (PI) (Kamil 2019;Hlali et al 2019) proporcinis integralinis diferencialinis (PID) (Yongjun et al 2017;Chang-liang et al 2014) ir proporcinis rezonansinis (PR) (Zhang et al 2014;Shen et al 2010) valdikliai. Tačiau gali būti naudojami ir sudėtingesni prognozuojantieji (angl.…”

Section: Fotovoltinių Mikroinverterių Srovės Valdymo Sistemosunclassified

“…The aim of such a control system is to control the microinverter switches so that the shape of the output current of the microinverter would reproduces the shape and phase of the reference sinusoidal signal (Rajeev et al 2018;Motta et al 2016;Bayhan et al 2019;Zha et al 2017). The most popular controllers used for the microinverter output current control are proportional-integral (PI) (Kamil 2019;Hlali et al 2019) and proportional-integral-differential (PID) (Yongjun et al 2017;Changliang et al 2014). The popularity of these well-known controllers is due to the easy implementation and well-developed controller parameters tuning techniques.…”

Section: Fig S12 Two Stages Microinvertermentioning

confidence: 99%

Energetiškai efektyvaus fotovoltinio mikroinverterio kūrimas

Bielskis¹

2020

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Disertacija rengta 2014-2020 metais Valstybiniame mokslinių tyrimų institute Fizinių ir technologijos mokslų centre. Vadovas prof. dr. Algirdas BAŠKYS (Valstybinis mokslinių tyrimų institutas Fizinių ir technologijos mokslų centras, elektros ir elektronikos inžinerija -T 001). Vilniaus Gedimino technikos universiteto elektros iš elektronikos inžinerijos mokslo krypties disertacijos gynimo taryba: Pirmininkas prof. dr. Dalius NAVAKAUSKAS (Vilniaus Gedimino technikos universitetas, elektros ir elektronikos inžinerija -T 001). Nariai: doc. dr. Saulius GUDŽIUS (Kauno technologijos universitetas, elektros ir elektronikos inžinerija -T 001), prof. dr. Jurij NOVICKIJ (Vilniaus Gedimino technikos universitetas, elektros ir elektronikos inžinerija -T 001), dr. Iouliia SKLIAROVA (Aveiro universitetas, Portugalija, elektros ir elektronikos inžinerija -T 001), dr. Česlovas ŠIMKEVIČIUS (Valstybinis mokslinių tyrimų institutas Fizinių ir technologijos mokslų centras, elektros ir elektronikos inžinerija -T 001). Disertacija bus ginama viešame Elektros ir elektronikos inžinerijos mokslo krypties disertacijos gynimo tarybos posėdyje 2020 m. rugsėjo 28 d. 10 val. Vilniaus Gedimino technikos universiteto senato posėdžių salėje.

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“…The most popular controllers used for tracking of the grid-connected inverter output current are proportional-integral (PI) [19][20][21][22][23][24][25], proportional-integral-derivative (PID) [3,21,26,27], and proportional-resonant (PR) [2,15,21,[28][29][30][31][32] controllers. However, more sophisticated predictive current controllers can be used as well [4,33,34].…”

Section: Introductionmentioning

confidence: 99%

Controller for the Grid-Connected Microinverter Output Current Tracking

2020

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The modification of the proportional–integral (PI) controller with the variable proportional constant for tracking of the grid-connected photovoltaic microinverter output current has been proposed. The obtained results show that in the case when the proportional constant of the PI controller varies in time according to the appropriate law, the microinverter output current sinus shape distortions decrease as compared to the case when the ordinary PI controller is used. The operation of the microinverter with the proposed controller was investigated for the cases when the electrical grid voltage sinus shape is not distorted and when it is distorted by the higher harmonics.

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Comparative analysis of PI and PR based Current Controllers for Grid Connected Photovoltaic Micro-inverters

Cited by 4 publications

References 9 publications

Virtual oscillator with delayed feedback for transient mitigation in inverter-based islanded microgrids

Virtual oscillator with delayed feedback for transient mitigation in inverter-based islanded microgrids

Energetiškai efektyvaus fotovoltinio mikroinverterio kūrimas

Controller for the Grid-Connected Microinverter Output Current Tracking

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