IEEE 1547 Series of Standards: Interconnection Issues

Basso, T.; DeBlasio, R.

doi:10.1109/tpel.2004.834000

Cited by 263 publications

(111 citation statements)

References 1 publication

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“…The optimal selection of the low-pass filter parameter is to set [T] = diag [1] in the frequency range in which disturbance is expected. The bandwidth of the DOb should be as high as possible, so the disturbance error can converge to zero in a wide range of frequencies.…”

Section: First-order Low-pass Filter Disturbance Observermentioning

confidence: 99%

“…In addition to the performance and reliability of the system under power electronic circuits in normal conditions, stability and grid support under grid faults are crucial due to restrictive grid code requirements [1,2]. Moreover, stability and reliability of the grid-connected inverter (GCI) under grid voltage faults must be considered for microgrid applications [3][4][5][6][7][8] with battery storage systems [9,10].…”

Section: Introductionmentioning

confidence: 99%

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Control Strategy for a Grid-Connected Inverter under Unbalanced Network Conditions—A Disturbance Observer-Based Decoupled Current Approach

et al. 2017

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This paper proposes a new approach on the novel current control strategy for grid-tied voltage-source inverters (VSIs) with circumstances of asymmetrical voltage conditions. A standard grid-connected inverter (GCI) allows the degree of freedom to integrate the renewable energy system to enhance the penetration of total utility power. However, restrictive grid codes require that renewable sources connected to the grid must support stability of the grid under grid faults. Conventional synchronously rotating frame dq current controllers are insufficient under grid faults due to the low bandwidth of proportional-integral (PI) controllers. Hence, this work proposes a proportional current controller with a first-order low-pass filter disturbance observer (DOb). The proposed controller establishes independent control on positive, as well as negative, sequence current components under asymmetrical grid voltage conditions. The approach is independent of parametric component values, as it estimates nonlinear feed-forward terms with the low-pass filter DOb. A numerical simulation model of the overall power system was implemented in a MATLAB/Simulink (2014B, MathWorks, Natick, MA, USA). Further, particular results show that double-frequency active power oscillations are suppressed by injecting appropriate negative-sequence currents. Moreover, a set of simulation results provided in the article matches the developed theoretical background for its feasibility.

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Section: First-order Low-pass Filter Disturbance Observermentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Control Strategy for a Grid-Connected Inverter under Unbalanced Network Conditions—A Disturbance Observer-Based Decoupled Current Approach

et al. 2017

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“…Preserving a good PQ is significant for the reliability of the loads. Thus, many PQ standards are recommended such as IEC61727, IEEE1547, IEEE519-1992, and EN61000-3-2 [12][13][14].…”

Section: Voltage Source Inverter Qualitymentioning

confidence: 99%

Performance Evaluation of Two-Level Photovoltaic Voltage Source Inverter Considering SPWM and SVM Switching Controller

Mutlag¹

2017

IJERA

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The switching control schemesincluding sinusoidal pulsewidth modulation (SPWM) and space vector modulation (SVM) are very important for the efficiency and accuracyof the voltage source inverter (VSI). Therefore, this paper presents a performance evaluation of a two-level VSI for the photovoltaic (PV) system based on adopted switching controllers namely, SPWM and SVM switching methods. The evaluation procedure and accuracy are demonstrated and investigated using simulations conducted for a 1.5 kW inverter in a MATLAB/Simulink environment. Two types of loads are utilized to assess the performance of the VSI which are resistive (R) load and resistive and inductive (RL) load. Total harmonic distortion (THD) is used for the comparison of the SPWM and the SVM. Results show that the SVM performs better compared with the SPWM in terms of THD rate. The THDs for SVM based system are found to be 0.02% and 0.08% for the R and RL, respectively; whereas the THDsfor SPWM controller are found to be 0.43% and 0.51% for the R and RL, respectively. Furthermore, mean square error (MSE) is also consideredas a statistical indicator. The MSE indicates that the SVM switching controller technique have superior outcomes compared with the SPWM switching controller technique and thus increases the efficiency of the whole system.

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“…the two loop system G p (s) ) to be stable. Since direct feedback of the output grid current of an LCL filter on its own is inherently unstable, it is necessary to have another feedback loop of the capacitor current or the current in the main inductor 1 L [16] to stabilize the system. The transfer function relating the output current 2 I to the reference current ref I (assuming the PWM block is a unity gain block) can be shown to be,…”

Section: Proposed Control Schemementioning

confidence: 99%

“…They convert DC from photovoltaic generators, batteries, fuel cells or variable frequency AC from wind and marine turbine into 50/60 Hz AC power. The output current of the converter should meet the total harmonic distortion (THD) standards in the presence of grid harmonics [1,2]. This is commonly achieved using active feedback control of the current injected into the grid.…”

Section: Introductionmentioning

confidence: 99%

Robust repetitive feedback control of a three-phase grid connected inverter

Jamil¹,

Sharkh²,

Abusara³

et al. 2010

5th IET International Conference on Power Electronics, Machines and Drives (PEMD 2010)

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This paper discusses the design of a repetitive feedback controller for a grid-connected two-level three-phase voltagesource inverter connected between a DC source and the grid through an LCL filter. The controller incorporates a classical two loop feedback of the output current and the capacitor current in addition to a repetitive feedback loop. The results show that the proposed technique improves the steady state error and the total harmonic distortion of output current in presence of utility harmonics.

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IEEE 1547 Series of Standards: Interconnection Issues

Cited by 263 publications

References 1 publication

Control Strategy for a Grid-Connected Inverter under Unbalanced Network Conditions—A Disturbance Observer-Based Decoupled Current Approach

Control Strategy for a Grid-Connected Inverter under Unbalanced Network Conditions—A Disturbance Observer-Based Decoupled Current Approach

Performance Evaluation of Two-Level Photovoltaic Voltage Source Inverter Considering SPWM and SVM Switching Controller

Robust repetitive feedback control of a three-phase grid connected inverter

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