Design of a Four-Branch LCL-Type Grid-Connecting Interface for a Three-Phase, Four-Leg Active Power Filter

Cao, Wu; Liu, Kangli; Ji, Yongchao; Wang, Yigang; Zhao, Jianfeng

doi:10.3390/en8031606

Cited by 15 publications

(10 citation statements)

References 16 publications

(36 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Table 2 lists each component used for the proposed SAPF. The detailed calculations for determining the values of the dc link capacitor, dc/dc boost inductor and filtering inductor was based on [53,54]. Specifically, for the dc link capacitor, a bigger value is needed for minimizing the ripple voltage [52,55].…”

Section: Simulation Resultsmentioning

confidence: 99%

Fundamental Active Current Adaptive Linear Neural Networks for Photovoltaic Shunt Active Power Filters

et al. 2016

View full text Add to dashboard Cite

This paper presents improvement of a harmonics extraction algorithm, known as the fundamental active current (FAC) adaptive linear element (ADALINE) neural network with the integration of photovoltaic (PV) to shunt active power filters (SAPFs) as active current source. Active PV injection in SAPFs should reduce dependency on grid supply current to supply the system. In addition, with a better and faster harmonics extraction algorithm, the SAPF should perform well, especially under dynamic PV and load conditions. The role of the actual injection current from SAPF after connecting PVs will be evaluated, and the better effect of using FAC ADALINE will be confirmed. The proposed SAPF was simulated and evaluated in MATLAB/Simulink first. Then, an experimental laboratory prototype was also developed to be tested with a PV simulator (CHROMA 62100H-600S), and the algorithm was implemented using a TMS320F28335 Digital Signal Processor (DSP). From simulation and experimental results, significant improvements in terms of total harmonic distortion (THD), time response and reduction of source power from grid have successfully been verified and achieved.

show abstract

Section: Simulation Resultsmentioning

confidence: 99%

Fundamental Active Current Adaptive Linear Neural Networks for Photovoltaic Shunt Active Power Filters

et al. 2016

View full text Add to dashboard Cite

show abstract

“…Their compensation characteristics are strongly influenced by supply impedance and they are highly susceptible to series and parallel resonances with the supply and load impedance. The APFs, which are based on power electronics, can overcome the above drawbacks of PPFs [3,4]. Additionally, APFs are more flexible and efficient compared with PPFs.…”

Section: Introductionmentioning

confidence: 99%

A Repetitive Control Scheme Aimed at Compensating the 6k + 1 Harmonics for a Three-Phase Hybrid Active Filter

Luo

Yang

et al. 2016

Energies

View full text Add to dashboard Cite

Abstract:The traditional repetitive controller has relatively worse stability and poor transient performance because it generates infinite gain at all the integer multiples of the fundamental frequency, and its control action is postponed by one fundamental period (T 0 ). To improve these disadvantages, many repetitive controllers with reduced delay time have been proposed, which can selectively compensate the odd harmonics or 6k ± 1 harmonics with delay time reduced to T 0 /2 and T 0 /3, respectively. To further study in this area, this paper proposes an improved repetitive scheme implemented in a stationary reference frame, which only compensates the 6k + 1 harmonics (e.g., −5, +7, −11, +13) in three-phase systems and reduces the time delay to T 0 /6. Thus compared with the earlier reduced delay time repetitive controllers, the robustness and transient performance is further improved, the waste of control effort is reduced, and the possibility of amplifying and even injecting any harmonic noises into the system is avoided to a great extent. Moreover, the proposed repetitive scheme is used in the control of a three-phase hybrid active power filter. The experimental results validate the effectiveness of the proposed repetitive control scheme.

show abstract

“…Most research works on SAPF adopt a general two-level voltage source inverter (VSI) topology [12][13][14]. However, multilevel inverters which have been reported to be superior to conventional two-level inverters [15][16][17] in term of output voltage quality (less harmonic distortions), are acknowledged as better alternative.…”

Section: Introductionmentioning

confidence: 99%

A Refined Self-Tuning Filter-Based Instantaneous Power Theory Algorithm for Indirect Current Controlled Three-Level Inverter-Based Shunt Active Power Filters under Non-sinusoidal Source Voltage Conditions

et al. 2017

View full text Add to dashboard Cite

Abstract:In this paper, a refined reference current generation algorithm based on instantaneous power (pq) theory is proposed, for operation of an indirect current controlled (ICC) three-level neutral-point diode clamped (NPC) inverter-based shunt active power filter (SAPF) under non-sinusoidal source voltage conditions. SAPF is recognized as one of the most effective solutions to current harmonics due to its flexibility in dealing with various power system conditions. As for its controller, pq theory has widely been applied to generate the desired reference current due to its simple implementation features. However, the conventional dependency on self-tuning filter (STF) in generating reference current has significantly limited mitigation performance of SAPF. Besides, the conventional STF-based pq theory algorithm is still considered to possess needless features which increase computational complexity. Furthermore, the conventional algorithm is mostly designed to suit operation of direct current controlled (DCC) SAPF which is incapable of handling switching ripples problems, thereby leading to inefficient mitigation performance. Therefore, three main improvements are performed which include replacement of STF with mathematical-based fundamental real power identifier, removal of redundant features, and generation of sinusoidal reference current. To validate effectiveness and feasibility of the proposed algorithm, simulation work in MATLAB-Simulink and laboratory test utilizing a TMS320F28335 digital signal processor (DSP) are performed. Both simulation and experimental findings demonstrate superiority of the proposed algorithm over the conventional algorithm.

show abstract

Design of a Four-Branch LCL-Type Grid-Connecting Interface for a Three-Phase, Four-Leg Active Power Filter

Cited by 15 publications

References 16 publications

Fundamental Active Current Adaptive Linear Neural Networks for Photovoltaic Shunt Active Power Filters

Fundamental Active Current Adaptive Linear Neural Networks for Photovoltaic Shunt Active Power Filters

A Repetitive Control Scheme Aimed at Compensating the 6k + 1 Harmonics for a Three-Phase Hybrid Active Filter

A Refined Self-Tuning Filter-Based Instantaneous Power Theory Algorithm for Indirect Current Controlled Three-Level Inverter-Based Shunt Active Power Filters under Non-sinusoidal Source Voltage Conditions

Contact Info

Product

Resources

About