Analysis and control of a reduced switch hybrid active power filter

Luo, Zhaoxu; Su, Mei; Sun, Yang; Zhang, Wei; Lin, Zhili

doi:10.1049/iet-pel.2015.0027

Cited by 24 publications

(13 citation statements)

References 21 publications

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“…In addition, their switching and conduction losses are added to the total system losses, and if an appropriate switching algorithm is not selected, it may greatly reduce the overall efficiency. Various APFs have been introduced so far, with different applications depending on how they are controlled and connected to the network [24][25][26][27][28][29]. A new type of compensator that uses both APFs and PPFs to improve performance is called hybrid APF, which has received much more attention than the conventional ones [30].…”

Section: Hybrid Active Power Filter Conceptmentioning

confidence: 99%

A Novel Control Strategy to Active Power Filter with Load Voltage Support Considering Current Harmonic Compensation

Jafrodi¹,

Ghanbari

Mahmoudian

et al. 2020

Applied Sciences

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This paper outlines some modifications to conventional active power filters (APFs) to compensate for the non-linearity of the load current. Since the APFs inject the required non-linearity of the load harmonic current to make the current source sinusoidal, a combination of passive power filters (PPFs) and APFs in series connection are more effective rather than individual usages. The proposed control approach based on sliding mode control (SMC) with a suitable sliding surface selection being applied to the proposed hybrid APF to increase the flexibility and reduce the complexity of the controller. An outstanding tracking process based on the reference current in the rotating dq frame is tested and guarantees the rapid convergence exponentially. An extra control loop is provided for DC link voltage regulation to minimize the DC ripples and control the APF three-phase output voltage levels. The presented solution provides an effective and straightforward load voltage support, maintaining an excellent dynamic performance in load changing and current compensation. The experimental results represent the authenticity of the proposed hybrid APF performance through several different tests, implying a feasible control approach for active filtering systems.

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Section: Hybrid Active Power Filter Conceptmentioning

confidence: 99%

A Novel Control Strategy to Active Power Filter with Load Voltage Support Considering Current Harmonic Compensation

Jafrodi¹,

Ghanbari

Mahmoudian

et al. 2020

Applied Sciences

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show abstract

“…Some researchers are interested in virtual hybrid APFs, that is an APF between an AC and DC micro-grid [107]. To research finding novel control strategies to improve the performance of hybrid filters has always been popular for researchers [108][109][110][111][112][113].…”

Section: Hybrid Active Power Filtersmentioning

confidence: 99%

An overview of power quality enhancement techniques applied to distributed generation in electrical distribution networks

Naderi

Hosseini

Zadeh

et al. 2018

Renewable and Sustainable Energy Reviews

127

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-It is obvious that power quality is an important characteristic of today's distribution power systems as loadsbecome more sensitive on the other hand nonlinear loads are increasing in the electrical distribution system. Considering the distributed nature of harmonic loads, the need for distributed power quality improvement (PQI) is inevitable. From years ago, researchers have been working on various kinds of filters and devices to enhance the overall power quality of power system, but today the nature of distribution system has been changed and power electronic based DGs play an important role in distribution grids. In this paper, a thorough survey is done on power quality enhancement devices with emphasis on ancillary services of multi-functional DGs. A literature review is also done on microgrids concept, testbeds and related control methods. Although there were some applications of DGs for PQI improvement these applications were not defined multi-functional DGs. Various control methods are studied and categorized regarding different viewpoints in the literature. Finally, a couple of thorough comparisons are done between the available techniques considering the nature, capabilities, advantages and implementation costs.

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“…Comparing (15) with the traditional internal model given by (9), it can be found that the delay time of 6k + 1 internal model is reduced to T 0 /6, which means a much faster dynamic response. What is more, it should be noted that the 6k + 1 internal model is expressed using the complex-vector notation, as it contains the complex coefficient e j π 3 .…”

Section: Internal Model Of 6k + 1 Repetitive Controllermentioning

confidence: 99%

“…Among the various viable hybrid active filter topologies, parallel hybrid active filters present a cost-effective solution for harmonic filtering and reactive power compensation of high power nonlinear industrial loads, due to the small rating of the active filter (2%-3%) of the load KVA rating [6]. Thus, they have attracted increasing attention [7][8][9][10][11].…”

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

Self Cite

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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.

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Analysis and control of a reduced switch hybrid active power filter

Cited by 24 publications

References 21 publications

A Novel Control Strategy to Active Power Filter with Load Voltage Support Considering Current Harmonic Compensation

A Novel Control Strategy to Active Power Filter with Load Voltage Support Considering Current Harmonic Compensation

An overview of power quality enhancement techniques applied to distributed generation in electrical distribution networks

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

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