Design of Robust Higher-Order Repetitive Controller Using Phase Lead Compensator

Jamil, Mohsin; Waris, Asim; Gilani, Syed Omer; Khawaja, Bilal A.; Khan, Muhammad Nasir; Raza, Ali

doi:10.1109/access.2020.2973168

Cited by 25 publications

(19 citation statements)

References 26 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…For the sake of overcoming system uncertainties, a higher-order repetitive approach is developed to regulate a two-level grid-connected inverter. This design structure encompassing the phase lead compensator shows the simplification and provides the tracking response of zero-phase error, but the tracking behavior in the transience is not satisfactory [47]. An unsophisticated deadbeat control with the use of a current observer has been presented for hybrid energy storage systems.…”

Section: Results and Analysismentioning

confidence: 99%

High-Performance Pure Sine Wave Inverter with Robust Intelligent Sliding Mode Maximum Power Point Tracking for Photovoltaic Applications

Chang

2020

Micromachines

View full text Add to dashboard Cite

Photovoltaic (PV) power generation has been extensively used as a result of the limited petrochemical resources and the rise of environmental awareness. Nevertheless, PV arrays have a widespread range of voltage changes in a variety of solar radiation, load, and temperature circumstances, so a maximum power point tracking (MPPT) method must be applied to get maximum power from PV systems. Sliding mode control (SMC) is effectively used in PV power generation due to its robustness, design simplicity, and superior interference suppression. When the PV array is subject to large parameter changes/highly uncertain conditions, the SMC leads to degraded steady-state performance, poor transient tracking speed, and unwanted flutter. Therefore, this paper proposes a robust intelligent sliding mode MPPT-based high-performance pure sine wave inverter for PV applications. The robust SMC is designed through fast sliding regime, which provides fixed time convergence and a non-singularity that allows better response in steady-state and transience. To avoid the flutter caused by system unmodeled dynamics, an enhanced cuckoo optimization algorithm (ECOA) with automatically adjustable step factor and detection probability is used to search control parameters of the robust sliding mode, thus finding global optimal solutions. The coalescence of both robust SMC and ECOA can control the converter to obtain MPPT with faster convergence rate and without untimely trapping at local optimal solutions. Then the pure sine wave inverter with robust intelligent sliding mode MPPT of the PV system delivers a high-quality and stable sinusoidal wave voltage to the load. The efficacy of the proposed method is validated on a MPPT pure sine wave inverter system by using numerical simulations and experiments. The results show that the output of the proposed PV system can improve steady-state performance and transient tracking speed.

show abstract

Section: Results and Analysismentioning

confidence: 99%

High-Performance Pure Sine Wave Inverter with Robust Intelligent Sliding Mode Maximum Power Point Tracking for Photovoltaic Applications

Chang

2020

Micromachines

View full text Add to dashboard Cite

show abstract

“…Fractional-order repetitive control (FORC) [10]- [17] and higher-order repetitive control (HORC) [18], [19] can be used to solve the frequency variation problem. However, HORC is usually used in slight frequency variation scenarios, and FORC can not only deal with slight frequency variations, but also be suitable for a wide range of frequency variations.…”

Section: Introductionmentioning

confidence: 99%

Fractional-Order New Generation of nk ± m-Order Harmonic Repetitive Control for PWM Converters

Wang

Zhou

et al. 2020

IEEE Access

View full text Add to dashboard Cite

In this paper, a fractional-order new generation of nk±m-order harmonic repetitive controller (FO-NG-nk±m RC), composed of a proposed new generation of nk±m RC (NG-nk±m RC) and a Taylor Series expansion based fractional delay (FD) filter using Lagrange interpolation with Farrow structure, is proposed. Compared with conventional nk±m RC, NG-nk±m RC has more advantages while achieving the same performance as the conventional nk±m RC. Different FD approximation algorithms are compared for the first time from the perspective of controller computational burden. The inner relationship between Taylor Series expansion method and Farrow structure FD filter is explained, detailed mathematical derivation is provided, and a complete set of FD filter design methods is formed. When the fundamental frequency is not constant, the performance of nk±m RC to track or eliminate any specific nk±m-order harmonics will be seriously degraded. However, without changing the sampling rate, the proposed FO-NG-nk±m RC can be used to improve the frequency adaptive performance. What's more, FO-NG-nk±m RC provides a unified framework for integer/fractional-order nk±m RCs. Experimental results of FO-NG-nk±m RC controlled three-phase PWM inverter system show the effectiveness and advantages of the proposed FO-NG-nk±m RC scheme.

show abstract

“…With the development of the power electronics network, the role of the PV source in all domestic and few commercial sectors has been extended. Renewable energy, such as the PV network, is linked to the grid in a number of ways [6][7][8][9][10]. When surplus power returns to the grid and is purchased from the grid when there is a power deficit through a net metering system, excess power is pumped into the electricity grid when PV generates more than the required demand.…”

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

“…If the AC output voltage from the interconnecting inverter has higher levels, the grid current injected contains less harmonic content. Multilevel and interleaved inverters can deliver enhanced waveform efficiency, smaller filter sizes, lower electromagnetic induction and lower harmonic distortion [6][7][8], which is ensured by power conditioning units. The power conditioning unit is the heart of PV grid-connected systems.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Investigation of Photovoltaic Grid System under Non-Uniform Irradiance Conditions

2020

Self Cite

View full text Add to dashboard Cite

Photovoltaic (PV) systems have recently been recognized as a leading way in the production of renewable electricity. Due to the unpredictable changes in environmental patterns, the amount of solar irradiation and cell operating temperature affect the power generated by the PV system. This paper, therefore, discusses the grid-integrated PV system to extract maximum power from the PV array to supply load requirements and the supply surplus power to the AC grid. The primary design is to have maximum power point tracking (MPPT) of the non-uniformly irradiated PV array, conversion efficiency maximization, and grid synchronization. This paper investigates various MPPT control algorithms using incremental conductance method, which effectively increased the performance and reduced error, hence helped to extract solar array’s power more efficiently. Additionally, other issues of PV grid-connected system such as network stability, power quality, and grid synchronization functions were implemented. The control of the voltage source converter is designed in such a way that PV power generated is synchronous to the grid. This paper also includes a comparative analysis of two MPPT techniques such as incremental conductance (INC) and perturb-and-observe (P&O). Extensive simulation of various controllers has been conducted to achieve enhanced efficient power extraction, grid synchronization and minimal performance loss due to dynamic tracking errors, particularly under fast-changing irradiation in Matlab/Simulink. The overall results favour INC algorithm and meet the required standards.

show abstract

Design of Robust Higher-Order Repetitive Controller Using Phase Lead Compensator

Cited by 25 publications

References 26 publications

High-Performance Pure Sine Wave Inverter with Robust Intelligent Sliding Mode Maximum Power Point Tracking for Photovoltaic Applications

High-Performance Pure Sine Wave Inverter with Robust Intelligent Sliding Mode Maximum Power Point Tracking for Photovoltaic Applications

Fractional-Order New Generation of nk ± m-Order Harmonic Repetitive Control for PWM Converters

Investigation of Photovoltaic Grid System under Non-Uniform Irradiance Conditions

Contact Info

Product

Resources

About