Dual loop control for single phase PWM inverter for distributed generation

Kalavalli, C.; Meenalochini, P; Selvaprasanth, P.; Haq, Safa

doi:10.1016/j.matpr.2020.10.116

Cited by 10 publications

(1 citation statement)

References 14 publications

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“…The state quantities in the mathematical model of three-phase grid-connected VSG are all AC quantities, and there is a strong coupling between variables, so VACDCL is commonly used to decouple them [25]- [26]. However, when VACDCL is used as the underlying control strategy, the controller actually indirectly modulates the feedback signal and cannot adjust the given AC voltage and current signal without static difference [28], [29]. Because the PI parameters in VACDCL are mostly selected by empirical method [34], the PI parameters optimized by intelligent algorithm also have the problem of complicated calculation [35].…”

Section: Introductionmentioning

confidence: 99%

Nonlinear Adaptive Disturbance Rejection Control Strategy Based on VSG for Photovoltaic-Storage Grid-Connected Inverter

Kong,

Zhang,

Zhuolin

et al. 2023

IEEE Access

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In this paper, a nonlinear adaptive disturbance rejection control (NADRC) strategy is designed to overcome the limitations of the traditional virtual synchronous generator (VSG) control method in photovoltaic (PV) grid-connected energy storage systems. This strategy utilizes exact feedback linearization and linear optimal control theory to establish a nonlinear adaptive disturbance rejection control law based on the virtual synchronous generator. It achieves zero static error control and noise adaptive stabilization of the AC link in a multiple-input multiple-output system. Compared with the simulation results of the grid-connected inverter voltage and current double closed-loop (VACDCL) strategy, the nonlinear adaptive disturbance rejection control effectively mitigates the fluctuations in load current caused by the photovoltaic energy storage module. It ensures power tracking under variable power conditions and outperforms traditional PI dual-loop control in terms of dynamic and static regulation performance as well as grid-connected current quality. Furthermore, this strategy's anti-disturbance adaptive link can quickly respond to system disturbances like frequency drift, voltage oscillations, and load current variations, thereby improving system performance.

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Section: Introductionmentioning

confidence: 99%

Nonlinear Adaptive Disturbance Rejection Control Strategy Based on VSG for Photovoltaic-Storage Grid-Connected Inverter

Kong,

Zhang,

Zhuolin

et al. 2023

IEEE Access

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Design of a Univariate Dual‐Loop Voltage System Based on the Multisampling Method

Yu,

Li,

Niu

et al. 2024

Circuit Theory & Apps

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This study presents an innovative control framework designed for voltage source inverters (VSIs) equipped with LC output filters. The objective of this control framework is to reduce delay and suppress aliasing effects by employing multisampling techniques and implementing repetitive filtering methods. The multisampling approach can significantly reduce control delays, thereby enhancing both the bandwidth and stability margins of the system. The implementation of multisampling techniques for inverter voltage can enhance dynamic performance. However, it may introduce high‐frequency ripples in the control loop, resulting in low‐order aliasing harmonics and ultimately leading to output voltage distortion. To address this issue, a multiple notch filter with minimal phase delay is employed suppress aliasing. The optimal parameters of the system are determined by evaluating the filter specifications, filtering effectiveness, output voltage ripple, and overall system performance, while also considering the actual filtering requirements and circuit size. Its effectiveness and performance are carefully verified by experimental results.

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Performance Evaluation of Grid-Connected Photovoltaic System Using EHO-Tuned VPTIDF and DQC-Based SPWM

Patra

Rath

2022

Iran J Sci Technol Trans Electr Eng

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Dual loop control for single phase PWM inverter for distributed generation

Cited by 10 publications

References 14 publications

Nonlinear Adaptive Disturbance Rejection Control Strategy Based on VSG for Photovoltaic-Storage Grid-Connected Inverter

Nonlinear Adaptive Disturbance Rejection Control Strategy Based on VSG for Photovoltaic-Storage Grid-Connected Inverter

Design of a Univariate Dual‐Loop Voltage System Based on the Multisampling Method

Performance Evaluation of Grid-Connected Photovoltaic System Using EHO-Tuned VPTIDF and DQC-Based SPWM

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