Power Control of a Three-phase Grid-connected Inverter using a PI Controller under Unbalanced Conditions

Alathamneh, Mohammad; Ghanayem, Haneen; Nelms, R.M.

doi:10.1109/southeastcon48659.2022.9764097

Cited by 9 publications

(5 citation statements)

References 16 publications

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“…K p and K i are the proportional and the integral gins, respectively. To find the gains of the PI controllers, the Ziegler-Nichols (ZN) method is used for tuning them [39,40]. A flowchart for the ZN method is presented in Figure 3.…”

Section: Controllers Designmentioning

confidence: 99%

PMSM Field-Oriented Control with Independent Speed and Flux Controllers for Continuous Operation under Open-Circuit Fault at Light Load Conditions

Ghanayem,

Alathamneh,

Nelms

2024

Energies

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Presented in this article is a permanent magnet synchronous motor (PMSM) control under open-circuit fault (OCF) operation using field-oriented control (FOC) with independent speed and flux controllers. The independent control allows the motor to operate efficiently under varying conditions. A simplified control approach is employed to control the PMSM under the OCF situation; the actual flux and torque of the PMSM are directly measured by the stator currents, eliminating the need for estimators or phase-locked-loop (PLL) systems. Matlab/Simulink is employed for the simulation, while hardware experiments are conducted using a dSPACE DS1104. The simulation and the hardware results demonstrate the control method’s effectiveness in maintaining continuous motor operation during OCF, its robustness against OCF conditions, and its ability to adapt under varying conditions, including speed, flux, and load torque change.

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Section: Controllers Designmentioning

confidence: 99%

PMSM Field-Oriented Control with Independent Speed and Flux Controllers for Continuous Operation under Open-Circuit Fault at Light Load Conditions

Ghanayem,

Alathamneh,

Nelms

2024

Energies

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“…The speed and flux controllers are both based on the PI controller and are designed using the Ziegler-Nichol's (ZN) method in [36,37]. The transfer function of the PI-controller is described by Equation ( 15), whereas the adjustment of the PI-gains is achieved by satisfying Equations ( 16) and (17).…”

Section: Speed/flux Control Designmentioning

confidence: 99%

Decoupled Speed and Flux Control of a Three-Phase Permanent Magnet Synchronous Motor under an Open-Circuit Fault Using a PR Current Controller

2023

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Presented in this article is a method for decoupling the speed and flux control of a three-phase permanent magnet synchronous motor (PMSM) during an open-circuit fault (OCF) using a current controller based on proportional resonant (PR) control techniques. The suggested control approach is relatively simple to implement and maintains good motor operation during the open circuit. PMSM performance under pre-fault, OCF, and post-fault conditions were investigated using Matlab/Simulink and an experimental setup based on a dSPACE DS1104. The conducted investigations provide strong evidence supporting the efficacy and resilience of the suggested control approach during OCF conditions.

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“…Power ripple and current harmonics at the photovoltaic (PV) inverter's output are amplified in the presence of negative sequence voltage due to the grid's instabilities. Among the most difficult parts of controlling PV inverters are the computations of the current reference and current control structure [1], [2]. PV inverter current reference may be calculated using several different methods, each of which is optimized for a specific goal, such as instantaneous real and reactive power regulation.…”

Section: Introductionmentioning

confidence: 99%

Comparative Analysis of Three-Phase PV Grid Connected Inverter Current Control Schemes in Unbalanced Grid Conditions

et al. 2023

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Recently, the regulation of photovoltaic inverters, effectively under imbalanced voltages on the grid, has been crucial for the operation of grid-connected solar systems. In this regard, determining the output current reference is an integral aspect of managing a solar inverter with an unbalanced voltage. Based on evaluations of Instantaneous Active-reactive Control (IARC), Positive Negative Sequence Control (PNSC), Balanced Positive Sequence Control (BPSC), and Average Active-reactive Control (AARC), this paper proposes a novel variablecurrent-t-reference calculation method for minimizing power fluctuations and current harmonics. The controller is employed to regulate both constructive and destructive sequences inside a static framework, therefore enhancing dynamic performance and facilitating the selection of suitable controls in the presence of significant network defects. This study also suggests comparing the four MPPT methodologies examined (fuzzy logic, current only, Incremental Conductance, and Perturb & Observe) to maximize energy output. The simulation results efficiently validate the suggested computation approach that is presented in the current reference.INDEX TERMS Grid-connected PV system; output current reference; Dual controller; current harmonics; MPPT Techniques; and DC-DC Converter.

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Power Control of a Three-phase Grid-connected Inverter using a PI Controller under Unbalanced Conditions

Cited by 9 publications

References 16 publications

PMSM Field-Oriented Control with Independent Speed and Flux Controllers for Continuous Operation under Open-Circuit Fault at Light Load Conditions

PMSM Field-Oriented Control with Independent Speed and Flux Controllers for Continuous Operation under Open-Circuit Fault at Light Load Conditions

Decoupled Speed and Flux Control of a Three-Phase Permanent Magnet Synchronous Motor under an Open-Circuit Fault Using a PR Current Controller

Comparative Analysis of Three-Phase PV Grid Connected Inverter Current Control Schemes in Unbalanced Grid Conditions

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