Finite set model predictive control of grid connected split-source inverters

Borges, Juliano de Azevedo; Grigoletto, Felipe Bovolini

doi:10.1109/cobep.2017.8257297

Cited by 25 publications

(14 citation statements)

References 19 publications

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“…9 obtained with the same ac output voltage and current amplitudes, and parameters from Table 1, but with different power factors. The figure shows that as power factor becomes more inductive, minimum lower bound of the references from (12) becomes bigger and further away from zero. They are hence less prone to over-modulation.…”

Section: Modulating Range Variationsmentioning

confidence: 99%

“…is the equivalent capacitance in the system, and φ is the power factor angle measured with reference to the fundamental load voltage according to (6). As for differential m diff (t) in (12), it provides the fundamental ac output of the MSSI. At times, it may include an additional third harmonic term, whose purpose is to nullify third harmonic voltage modulated to the ac output from the second-order oscillating dclink voltage.…”

Section: Second-order Power Distribution and Modulating Expressionsmentioning

confidence: 99%

“…Modulating references from (12) depend on system parameters, which in practice, will vary. Therefore, instead of relying on (12), the references should be generated autonomously using a closed control scheme to avoid inaccuracy introduced by changing conditions. Overall block diagram of the adopted control scheme is given in Fig.…”

Section: Control Schemesmentioning

confidence: 99%

“…The inner PR loop, tuned to double fundamental frequency, will then regulate dc component of the source current i dc to track i dc_ref , while eliminating its second-order ripple. Output of the inner loop will eventually be a sum of D dc and m t needed for forming the two modulating references in (12). However, including the low-pass filter immediately after measuring v c in Fig.…”

Section: Control Schemesmentioning

confidence: 99%

“…Other topological extensions in [10,11] have targeted at higher voltage gains while using the same boost duty ratio. Even with the same SSI topology, the authors of [4,12] have proposed modulation and model predictive control for improving its performance. These studies have however not addressed the second-order ripples experienced by a single-phase SSI (and all other single-phase inverters).…”

Section: Introductionmentioning

confidence: 99%

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Modified split‐source inverter with single‐phase dual power decoupling

Yin

Xin

Ding

et al. 2020

IET Power Electronics

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Split-source inverter (SSI) is a topology developed for flexibly stepping up and down its ac output voltage using only a standard inverter bridge. However, when configured as a single-phase inverter, it is still burdened by common second-order ripples. This study, therefore, proposes a modified SSI (MSSI) that can perform dual power decoupling. Unlike existing schemes, dual power decoupling makes use of both dc-and ac-side capacitors for diverting second-order ripples away from the dc source, which may be solar or other types of sources that do not work well with sizable ripples. Dual power decoupling, however, requires careful topological changes, before its effective realisation can be achieved with only a standard inverter bridge and a very small overall capacitance. Design of this capacitance and its comparison with passive decoupling have then been analysed, before testing the MSSI in experiments. Results obtained have verified the MSSI as an enhanced single-phase inverter with both buck and boost abilities while using no extra switches.

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Section: Modulating Range Variationsmentioning

confidence: 99%

Section: Second-order Power Distribution and Modulating Expressionsmentioning

confidence: 99%

Section: Control Schemesmentioning

confidence: 99%

Section: Control Schemesmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Modified split‐source inverter with single‐phase dual power decoupling

Yin

Xin

Ding

et al. 2020

IET Power Electronics

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Simplified three‐phase split‐source inverter for PV system application controlled via model‐predictive control

Elthokaby,

Abdelsalam,

Abdel‐Rahim

et al. 2023

Circuit Theory & Apps

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SummaryIn this paper, for standalone and grid‐connected PV systems, a three‐phase simplified split‐source inverter (SSI) is proposed and controlled using a model‐predictive control (MPC). The maximum power point tracking (MPPT) approach used is an incremental conductance method based on a PI controller for both systems. The standalone system is composed of PV modules, a three‐phase SSI, and a bidirectional power DC–DC converter that connects a battery bank and a DC‐side capacitor. The output AC voltages of SSI are controlled using MPC. The bidirectional power DC–DC converter regulates the DC‐link voltage (DCLV). The grid‐connected system consists of PV modules, a three‐phase SSI, and an AC‐side L‐filter. The DC‐link PI controller generates reference currents for the MPC algorithm. The MPC uses these reference currents to adjust and deliver the PV power to the grid while regulating the DCLV. The PI controllers' parameters are selected for both systems using the Harris Hawks optimization method. Both PV systems simulation results show that under various operating conditions, they have succeeded in fixing a DCLV and producing a high‐quality AC output voltage and current at low THD. Experimental results for the three‐phase standalone PV system used to verify the system's performance.

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