A Multitasking Control Algorithm for Grid-Connected Inverters in Distributed Generation Applications Using Adaptive Noise Cancellation Filters

Chilipi, Rajasekharareddy; Sayari, Naji Al; Beig, Abdul R.; Hosani, Khalifa Al

doi:10.1109/tec.2015.2510662

Cited by 67 publications

(36 citation statements)

References 38 publications

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“…As can be seen from the closed-loop system model in (9), the converter output current is co-determined by the desired fundamental current i * o,1 , the grid voltage v g , the non-linear load current i ld1 and the transfer functions G 1 (s), G 3 (s) and G 5 (s). Equations (11), (13), and (15) indicate that in order to achieve zero-error fundamental reference tracking and zero-error fundamental disturbance (from the load and the grid) rejection, it is of vital importance to have c 1 (s)| s=j2π f g → ∞ and a finite value of c 2 (s)| s=j2π f g . Figure 3 shows the magnitude response of G 1 (s), G 3 (s) and G 5 (s) when the resonance filters are applied for voltage support, namely, by the substitution of (7) and (8) into (11), (13) and (15).…”

Section: Fundamental Converter Output Current Regulationmentioning

confidence: 99%

“…In other words, when the grid frequency matches with the estimated one by f g =f g , zero-error fundamental reference tracking and zero-error fundamental disturbance rejection is possible. Moreover, the transfer function of G 1 (s) in (11)…”

Section: Fundamental Converter Output Current Regulationmentioning

confidence: 99%

“…The second category is devoted to absorbing harmonics caused by polluting loads by acting as an active power filter (APF) [5]. The last category intends to sink harmonics introduced by local loads in addition to (bidirectionally) exchanging active power with the grid [9][10][11][12][13][14][15][16]. The case considered in this paper belongs to the last category: compensation of harmonics introduced by the non-linear loads in addition to active power regulation.…”

Section: Introductionmentioning

confidence: 99%

“…To achieve these two objectives in a shunt converter, traditionally control strategies require an additional measurement of the grid current [9] or the non-linear load current [10][11][12] for harmonic content detection and identification. Consequentially, the identified harmonic content is used for the reference formulation of the shunt converter output current.…”

Section: Introductionmentioning

confidence: 99%

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Voltage Harmonic Suppression by Means of Grid-Connected Converters Using only Local Measurements

Roes

Hendrix

et al. 2018

Energies

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A single-phase grid-connected converter is considered in this paper in the presence of harmonic problems introduced non-linear loads. In order to compensate the harmonics caused by the loads, a local voltage support scheme is proposed. This is an added feature because its implementation is in parallel with a conventional current control method. Distinctively, the measurements of the grid or load current are not needed since the scheme is based on only local measurements. On top of a fundamental part for desired power injection, the converter output current comprises a harmonic part for compensation. Thus, the grid current harmonic distortion is minimized and the enhancement of the local voltage quality is achieved. A comprehensive model analysis indicates that the proposed strategy can help to attenuate harmonics of the local voltage without compromising on the quality of the fundamental current injection. Experimental results validate the effectiveness of the proposed control scheme. Moreover, the impact of grid frequency estimation error on the control strategy’s performance is quantified theoretically and experimentally.

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Section: Fundamental Converter Output Current Regulationmentioning

confidence: 99%

Section: Fundamental Converter Output Current Regulationmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Voltage Harmonic Suppression by Means of Grid-Connected Converters Using only Local Measurements

Roes

Hendrix

et al. 2018

Energies

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“…The technology of DG system has been developed rapidly [6,7]. A lot of research results show that the DG inverter has the power quality control ability [8,9], such as being used to compensate load harmonic current [10,11]. For harmonic current compensation, the output harmonic current control performance directly affects the harmonic current compensation effect of DG inverter.…”

Section: Introductionmentioning

confidence: 99%

Modeling and Enhanced Error-Free Current Control Strategy for Inverter with Virtual Resistor Damping

et al. 2018

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In microgrid, the grid-connected inverter current with the LCL (inductor-capacitor-inductor) output filter is amplified at certain frequencies. Using virtual resistor damping method can help suppress the amplification. By choosing an appropriate virtual resistor value, the model of the inverter current control loop is simplified as a 2 nd -order lowpass filter. Based on such simplified model, this paper proposes a design method of reference current compensation controller, which does not require decomposition of harmonic components. With the reference compensation, the inverter output current control precision is improved obviously. The simulation and experimental results verify the accuracy of the inverter simplified model and effectiveness of the reference compensation design method.

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A new configuration of grid‐connected photovoltaic‐based multifunctional power converter for single‐phase system

Dongre

Mishra

Majji

2022

Circuit Theory & Apps

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Summary The paper presents a new configuration of a grid‐connected converter centering on the needs of voltage‐sensitive nonlinear loads with source current compensation and photovoltaic (PV) power injection capability. The presented system consists of a six‐switch converter, which gives dual single‐phase output. The first output is connected in shunt near the source end to inject PV‐generated power along with the supply of load current harmonics and reactive power. The second output forms a series connection near the load end to protect the voltage‐sensitive nonlinear load from supply‐side voltage variations such as sags and harmonics. The system operation is validated through MATLAB simulation and real‐time simulation using Opal‐RT (OP4510) under different dynamic conditions such as variations in supply voltage, variation in solar irradiance, and load variation which is typically encountered in a modern distribution network. The performance of the proposed multifunctional converter is found to be satisfactory in all operating conditions by meeting the desired PV power injections along with the compensation of sensitive nonlinear load terminal voltage and source current harmonic issues within the standard allowable limit specified by IEEE.

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A Multitasking Control Algorithm for Grid-Connected Inverters in Distributed Generation Applications Using Adaptive Noise Cancellation Filters

Cited by 67 publications

References 38 publications

Voltage Harmonic Suppression by Means of Grid-Connected Converters Using only Local Measurements

Voltage Harmonic Suppression by Means of Grid-Connected Converters Using only Local Measurements

Modeling and Enhanced Error-Free Current Control Strategy for Inverter with Virtual Resistor Damping

A new configuration of grid‐connected photovoltaic‐based multifunctional power converter for single‐phase system

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